File: disa-stig-rhel8-v2r2-xccdf-scap.xml

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scap-security-guide 0.1.76-1
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file content (26079 lines) | stat: -rw-r--r-- 2,275,865 bytes parent folder | download 
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        <cpe:platform id="xccdf_mil.disa.stig_platform_LinuxGnome">
          <cpe:title>Gnome-shell Package</cpe:title>
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        <cpe:platform id="xccdf_mil.disa.stig_platform_RHEL_8-1_or_Lower">
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        <cpe:platform id="xccdf_mil.disa.stig_platform_LinuxUEFI">
          <cpe:title>Linux UEFI Boot</cpe:title>
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            <cpe:check-fact-ref system="http://oval.mitre.org/XMLSchema/oval-definitions-5" href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" id-ref="oval:mil.disa.stig.linux:def:100006" />
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        </cpe:platform>
        <cpe:platform id="xccdf_mil.disa.stig_platform_LinuxTFTP">
          <cpe:title>Linux with TFTP installed</cpe:title>
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            <cpe:check-fact-ref system="http://oval.mitre.org/XMLSchema/oval-definitions-5" href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" id-ref="oval:mil.disa.stig.defs:def:25795200" />
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        <cpe:platform id="xccdf_mil.disa.stig_platform_LinuxPostfix">
          <cpe:title>Linux with postfix installed</cpe:title>
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            <cpe:check-fact-ref system="http://oval.mitre.org/XMLSchema/oval-definitions-5" href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" id-ref="oval:mil.disa.stig.defs:def:25795100" />
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        <cpe:platform id="xccdf_mil.disa.stig_platform_LinuxAutofs">
          <cpe:title>Linux with autofs installed</cpe:title>
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            <cpe:check-fact-ref system="http://oval.mitre.org/XMLSchema/oval-definitions-5" href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" id-ref="oval:mil.disa.stig.defs:def:25784900" />
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      <xccdf:metadata>
        <dc:creator>DISA</dc:creator>
        <dc:publisher>DISA</dc:publisher>
        <dc:contributor>DISA</dc:contributor>
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        <xccdf:select idref="xccdf_mil.disa.stig_rule_SV-230495r1017278_rule" selected="false" />
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      </xccdf:Profile>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230221">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230221r1017040_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010000</xccdf:version>
          <xccdf:title>RHEL 8 must be a vendor-supported release.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;An operating system release is considered "supported" if the vendor continues to provide security patches for the product. With an unsupported release, it will not be possible to resolve security issues discovered in the system software.

Red Hat offers the Extended Update Support (EUS) add-on to a Red Hat Enterprise Linux subscription, for a fee, for those customers who wish to standardize on a specific minor release for an extended period. The RHEL 8 minor releases eligible for EUS are 8.1, 8.2, 8.4, 8.6, and 8.8. Each RHEL 8 EUS stream is available for 24 months from the availability of the minor release. RHEL 8.10 will be the final minor release overall. For more details on the Red Hat Enterprise Linux Life Cycle  visit https://access.redhat.com/support/policy/updates/errata/.
Note: The life-cycle time spans and dates are subject to adjustment.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32865r567410_fix">Upgrade to a supported version of RHEL 8.</xccdf:fixtext>
          <xccdf:fix id="F-32865r567410_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230221" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230223">
        <xccdf:title>SRG-OS-000033-GPOS-00014</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230223r1017042_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010020</xccdf:version>
          <xccdf:title>RHEL 8 must implement NIST FIPS-validated cryptography for the following: To provision digital signatures, to generate cryptographic hashes, and to protect data requiring data-at-rest protections in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The operating system must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.

RHEL 8 utilizes GRUB 2 as the default bootloader. Note that GRUB 2 command-line parameters are defined in the "kernelopts" variable of the /boot/grub2/grubenv file for all kernel boot entries. The command "fips-mode-setup" modifies the "kernelopts" variable, which in turn updates all kernel boot entries. 

The fips=1 kernel option needs to be added to the kernel command line during system installation so that key generation is done with FIPS-approved algorithms and continuous monitoring tests in place. Users must also ensure the system has plenty of entropy during the installation process by moving the mouse around, or if no mouse is available, ensuring that many keystrokes are typed. The recommended amount of keystrokes is 256 and more. Less than 256 keystrokes may generate a nonunique key.

Satisfies: SRG-OS-000033-GPOS-00014, SRG-OS-000125-GPOS-00065, SRG-OS-000396-GPOS-00176, SRG-OS-000423-GPOS-00187, SRG-OS-000478-GPOS-00223&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000068</xccdf:ident>
          <xccdf:fixtext fixref="F-32867r928584_fix">Configure the operating system to implement DOD-approved encryption by following the steps below:

To enable strict FIPS compliance, the fips=1 kernel option needs to be added to the kernel boot parameters during system installation so key generation is done with FIPS-approved algorithms and continuous monitoring tests in place.

Enable FIPS mode after installation (not strict FIPS-compliant) with the following command:

     $ sudo fips-mode-setup --enable

Reboot the system for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-32867r928584_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230223" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230228">
        <xccdf:title>SRG-OS-000032-GPOS-00013</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230228r1017047_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010070</xccdf:version>
          <xccdf:title>All RHEL 8 remote access methods must be monitored.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access management difficult at best.

Remote access is access to DOD nonpublic information systems by an authorized user (or an information system) communicating through an external, nonorganization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.

Automated monitoring of remote access sessions allows organizations to detect cyber attacks and ensure ongoing compliance with remote access policies by auditing connection activities of remote access capabilities, such as Remote Desktop Protocol (RDP), on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000067</xccdf:ident>
          <xccdf:fixtext fixref="F-32872r567431_fix">Configure RHEL 8 to monitor all remote access methods by installing rsyslog with the following command:

$ sudo yum install rsyslog

Then add or update the following lines to the "/etc/rsyslog.conf" file:

auth.*;authpriv.*;daemon.* /var/log/secure

The "rsyslog" service must be restarted for the changes to take effect. To restart the "rsyslog" service, run the following command:

$ sudo systemctl restart rsyslog.service</xccdf:fixtext>
          <xccdf:fix id="F-32872r567431_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230228" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230231">
        <xccdf:title>SRG-OS-000073-GPOS-00041</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230231r1017050_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010110</xccdf:version>
          <xccdf:title>RHEL 8 must encrypt all stored passwords with a FIPS 140-2 approved cryptographic hashing algorithm.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.

Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000196</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004062</xccdf:ident>
          <xccdf:fixtext fixref="F-32875r567440_fix">Configure RHEL 8 to encrypt all stored passwords. 

Edit/Modify the following line in the "/etc/login.defs" file and set "[ENCRYPT_METHOD]" to SHA512.

ENCRYPT_METHOD SHA512</xccdf:fixtext>
          <xccdf:fix id="F-32875r567440_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230231" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230232">
        <xccdf:title>SRG-OS-000073-GPOS-00041</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230232r1017051_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010120</xccdf:version>
          <xccdf:title>RHEL 8 must employ FIPS 140-2 approved cryptographic hashing algorithms for all stored passwords.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The system must use a strong hashing algorithm to store the password.

Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000196</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004062</xccdf:ident>
          <xccdf:fixtext fixref="F-32876r567443_fix">Lock all interactive user accounts not using SHA-512 hashing until the passwords can be regenerated with SHA-512.</xccdf:fixtext>
          <xccdf:fix id="F-32876r567443_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230232" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230233">
        <xccdf:title>SRG-OS-000073-GPOS-00041</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230233r1044790_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010130</xccdf:version>
          <xccdf:title>The RHEL 8 shadow password suite must be configured to use a sufficient number of hashing rounds.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The system must use a strong hashing algorithm to store the password. The system must use a sufficient number of hashing rounds to ensure the required level of entropy.

Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000196</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004062</xccdf:ident>
          <xccdf:fixtext fixref="F-32877r1044789_fix">Configure RHEL 8 to encrypt all stored passwords with a strong cryptographic hash.

Edit/modify the following line in the "/etc/login.defs" file and set "SHA_CRYPT_MIN_ROUNDS" to a value no lower than "100000":

SHA_CRYPT_MIN_ROUNDS 100000</xccdf:fixtext>
          <xccdf:fix id="F-32877r1044789_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230233" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230234">
        <xccdf:title>SRG-OS-000080-GPOS-00048</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230234r1017053_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010140</xccdf:version>
          <xccdf:title>RHEL 8 operating systems booted with United Extensible Firmware Interface (UEFI) must require authentication upon booting into single-user mode and maintenance.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes single-user or maintenance mode is granted privileged access to all files on the system. GRUB 2 is the default boot loader for RHEL 8 and is designed to require a password to boot into single-user mode or make modifications to the boot menu.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxUEFI" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000213</xccdf:ident>
          <xccdf:fixtext fixref="F-32878r743921_fix">Configure the system to require a grub bootloader password for the grub superusers account with the grub2-setpassword command, which creates/overwrites the /boot/efi/EFI/redhat/user.cfg file.

Generate an encrypted grub2 password for the grub superusers account with the following command:

$ sudo grub2-setpassword
Enter password:
Confirm password:</xccdf:fixtext>
          <xccdf:fix id="F-32878r743921_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230234" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230235">
        <xccdf:title>SRG-OS-000080-GPOS-00048</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230235r1017054_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010150</xccdf:version>
          <xccdf:title>RHEL 8 operating systems booted with a BIOS must require authentication upon booting into single-user and maintenance modes.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes single-user or maintenance mode is granted privileged access to all files on the system. GRUB 2 is the default boot loader for RHEL 8 and is designed to require a password to boot into single-user mode or make modifications to the boot menu.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxBIOS" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000213</xccdf:ident>
          <xccdf:fixtext fixref="F-32879r743924_fix">Configure the system to require a grub bootloader password for the grub superusers account with the grub2-setpassword command, which creates/overwrites the /boot/grub2/user.cfg file.

Generate an encrypted grub2 password for the grub superusers account with the following command:

$ sudo grub2-setpassword
Enter password:
Confirm password:</xccdf:fixtext>
          <xccdf:fix id="F-32879r743924_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230235" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230236">
        <xccdf:title>SRG-OS-000080-GPOS-00048</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230236r1017055_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010151</xccdf:version>
          <xccdf:title>RHEL 8 operating systems must require authentication upon booting into rescue mode.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If the system does not require valid root authentication before it boots into emergency or rescue mode, anyone who invokes emergency or rescue mode is granted privileged access to all files on the system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000213</xccdf:ident>
          <xccdf:fixtext fixref="F-32880r743927_fix">Configure the system to require authentication upon booting into rescue mode by adding the following line to the "/usr/lib/systemd/system/rescue.service" file.

ExecStart=-/usr/lib/systemd/systemd-sulogin-shell rescue</xccdf:fixtext>
          <xccdf:fix id="F-32880r743927_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230236" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230237">
        <xccdf:title>SRG-OS-000120-GPOS-00061</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230237r1017056_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010160</xccdf:version>
          <xccdf:title>The RHEL 8 pam_unix.so module must be configured in the password-auth file to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules. 

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000803</xccdf:ident>
          <xccdf:fixtext fixref="F-32881r809275_fix">Configure RHEL 8 to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.

Edit/modify the following line in the "/etc/pam.d/password-auth" file to include the sha512 option for pam_unix.so:

password sufficient pam_unix.so sha512</xccdf:fixtext>
          <xccdf:fix id="F-32881r809275_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230237" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230238">
        <xccdf:title>SRG-OS-000120-GPOS-00061</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230238r1017057_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010161</xccdf:version>
          <xccdf:title>RHEL 8 must prevent system daemons from using Kerberos for authentication.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules.

The key derivation function (KDF) in Kerberos is not FIPS compatible.  Ensuring the system does not have any keytab files present prevents system daemons from using Kerberos for authentication.  A keytab is a file containing pairs of Kerberos principals and encrypted keys.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_Linux_Not_krb5wks_1-17" />
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_Linux_Not_krb5svr_1-17" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000803</xccdf:ident>
          <xccdf:fixtext fixref="F-32882r567461_fix">Configure RHEL 8 to prevent system daemons from using Kerberos for authentication.

Remove any files with the .keytab extension from the operating system.</xccdf:fixtext>
          <xccdf:fix id="F-32882r567461_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230238" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230239">
        <xccdf:title>SRG-OS-000120-GPOS-00061</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230239r1017058_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010162</xccdf:version>
          <xccdf:title>The krb5-workstation package must not be installed on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules.

Currently, Kerberos does not utilize FIPS 140-2 cryptography.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_Linux_Not_krb5wks_1-17" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000803</xccdf:ident>
          <xccdf:fixtext fixref="F-32883r567464_fix">Document the krb5-workstation package with the ISSO as an operational requirement or remove it from the system with the following command:

$ sudo yum remove krb5-workstation</xccdf:fixtext>
          <xccdf:fix id="F-32883r567464_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230239" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230240">
        <xccdf:title>SRG-OS-000134-GPOS-00068</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230240r1017059_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010170</xccdf:version>
          <xccdf:title>RHEL 8 must use a Linux Security Module configured to enforce limits on system services.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters.

This requirement applies to operating systems performing security function verification/testing and/or systems and environments that require this functionality.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001084</xccdf:ident>
          <xccdf:fixtext fixref="F-32884r567467_fix">Configure the operating system to verify correct operation of all security functions.

Set the "SELinux" status and the "Enforcing" mode by modifying the "/etc/selinux/config" file to have the following line:

SELINUX=enforcing

A reboot is required for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-32884r567467_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230240" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230241">
        <xccdf:title>SRG-OS-000134-GPOS-00068</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230241r1017060_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010171</xccdf:version>
          <xccdf:title>RHEL 8 must have policycoreutils package installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters.

Policycoreutils contains the policy core utilities that are required for basic operation of an SELinux-enabled system. These utilities include load_policy to load SELinux policies, setfile to label filesystems, newrole to switch roles, and run_init to run /etc/init.d scripts in the proper context.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001084</xccdf:ident>
          <xccdf:fixtext fixref="F-32885r567470_fix">Configure the operating system to have the policycoreutils package installed with the following command:

$ sudo yum install policycoreutils</xccdf:fixtext>
          <xccdf:fix id="F-32885r567470_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230241" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230244">
        <xccdf:title>SRG-OS-000163-GPOS-00072</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230244r1017062_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010200</xccdf:version>
          <xccdf:title>RHEL 8 must be configured so that all network connections associated with SSH traffic terminate after becoming unresponsive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminating an idle SSH session will also free up resources committed by the managed network element.

Terminating network connections associated with communications sessions includes, for example, deallocating associated TCP/IP address/port pairs at the operating system level and deallocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean the operating system terminates all sessions or network access; it only ends the unresponsive session and releases the resources associated with that session.

RHEL 8 uses /etc/ssh/sshd_config for configurations of OpenSSH. Within the sshd_config, the product of the values of "ClientAliveInterval" and "ClientAliveCountMax" is used to establish the inactivity threshold. The "ClientAliveInterval" is a timeout interval in seconds after which if no data has been received from the client, sshd will send a message through the encrypted channel to request a response from the client. The "ClientAliveCountMax" is the number of client alive messages that may be sent without sshd receiving any messages back from the client. If this threshold is met, sshd will disconnect the client. For more information on these settings and others, refer to the sshd_config man pages.

Satisfies: SRG-OS-000163-GPOS-00072, SRG-OS-000126-GPOS-00066, SRG-OS-000279-GPOS-00109&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001133</xccdf:ident>
          <xccdf:fixtext fixref="F-32888r917866_fix">Note: This setting must be applied in conjunction with RHEL-08-010201 to function correctly.

Configure the SSH server to terminate a user session automatically after the SSH client has become unresponsive.

Modify or append the following lines in the "/etc/ssh/sshd_config" file:

     ClientAliveCountMax 1

For the changes to take effect, the SSH daemon must be restarted:

     $ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32888r917866_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230244" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230245">
        <xccdf:title>SRG-OS-000206-GPOS-00084</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230245r1017063_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010210</xccdf:version>
          <xccdf:title>The RHEL 8 /var/log/messages file must have mode 0640 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001314</xccdf:ident>
          <xccdf:fixtext fixref="F-32889r567482_fix">Change the permissions of the file "/var/log/messages" to "0640" by running the following command:

$ sudo chmod 0640 /var/log/messages</xccdf:fixtext>
          <xccdf:fix id="F-32889r567482_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230245" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230246">
        <xccdf:title>SRG-OS-000206-GPOS-00084</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230246r1017064_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010220</xccdf:version>
          <xccdf:title>The RHEL 8 /var/log/messages file must be owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001314</xccdf:ident>
          <xccdf:fixtext fixref="F-32890r567485_fix">Change the owner of the file /var/log/messages to root by running the following command:

$ sudo chown root /var/log/messages</xccdf:fixtext>
          <xccdf:fix id="F-32890r567485_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230246" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230247">
        <xccdf:title>SRG-OS-000206-GPOS-00084</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230247r1017065_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010230</xccdf:version>
          <xccdf:title>The RHEL 8 /var/log/messages file must be group-owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001314</xccdf:ident>
          <xccdf:fixtext fixref="F-32891r567488_fix">Change the group of the file "/var/log/messages" to "root" by running the following command:

$ sudo chgrp root /var/log/messages</xccdf:fixtext>
          <xccdf:fix id="F-32891r567488_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230247" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230248">
        <xccdf:title>SRG-OS-000206-GPOS-00084</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230248r1017066_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010240</xccdf:version>
          <xccdf:title>The RHEL 8 /var/log directory must have mode 0755 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001314</xccdf:ident>
          <xccdf:fixtext fixref="F-32892r567491_fix">Change the permissions of the directory "/var/log" to "0755" by running the following command:

$ sudo chmod 0755 /var/log</xccdf:fixtext>
          <xccdf:fix id="F-32892r567491_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230248" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230249">
        <xccdf:title>SRG-OS-000206-GPOS-00084</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230249r1017067_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010250</xccdf:version>
          <xccdf:title>The RHEL 8 /var/log directory must be owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001314</xccdf:ident>
          <xccdf:fixtext fixref="F-32893r567494_fix">Change the owner of the directory /var/log to root by running the following command:

$ sudo chown root /var/log</xccdf:fixtext>
          <xccdf:fix id="F-32893r567494_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230249" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230250">
        <xccdf:title>SRG-OS-000206-GPOS-00084</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230250r1017068_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010260</xccdf:version>
          <xccdf:title>The RHEL 8 /var/log directory must be group-owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001314</xccdf:ident>
          <xccdf:fixtext fixref="F-32894r567497_fix">Change the group of the directory "/var/log" to "root" by running the following command:

$ sudo chgrp root /var/log</xccdf:fixtext>
          <xccdf:fix id="F-32894r567497_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230250" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230253">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230253r1044799_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010292</xccdf:version>
          <xccdf:title>RHEL 8 must ensure the SSH server uses strong entropy.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The most important characteristic of a random number generator is its randomness, namely its ability to deliver random numbers that are impossible to predict. Entropy in computer security is associated with the unpredictability of a source of randomness. The random source with high entropy tends to achieve a uniform distribution of random values. Random number generators are one of the most important building blocks of cryptosystems.

The SSH implementation in RHEL 8 uses the OPENSSL library, which does not use high-entropy sources by default. By using the SSH_USE_STRONG_RNG environment variable the OPENSSL random generator is reseeded from /dev/random. This setting is not recommended on computers without the hardware random generator because insufficient entropy causes the connection to be blocked until enough entropy is available.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-2_or_Higher" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32897r1044798_fix">Configure the operating system SSH server to use strong entropy.

Add or modify the following line in the "/etc/sysconfig/sshd" file.

SSH_USE_STRONG_RNG=32

The SSH service must be restarted for changes to take effect.

Restart the SSH Daemon with the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32897r1044798_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230253" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230255">
        <xccdf:title>SRG-OS-000250-GPOS-00093</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230255r1017075_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010294</xccdf:version>
          <xccdf:title>The RHEL 8 operating system must implement DoD-approved TLS encryption in the OpenSSL package.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without cryptographic integrity protections, information can be altered by unauthorized users without detection.

Remote access (e.g., RDP) is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.

Cryptographic mechanisms used for protecting the integrity of information include, for example, signed hash functions using asymmetric cryptography enabling distribution of the public key to verify the hash information while maintaining the confidentiality of the secret key used to generate the hash.

RHEL 8 incorporates system-wide crypto policies by default.  The employed algorithms can be viewed in the /etc/crypto-policies/back-ends/openssl.config file.

Satisfies: SRG-OS-000250-GPOS-00093, SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174, SRG-OS-000125-GPOS-00065&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001453</xccdf:ident>
          <xccdf:fixtext fixref="F-32899r1017074_fix">Configure the RHEL 8 OpenSSL library to use only DoD-approved TLS encryption by editing the following line in the "/etc/crypto-policies/back-ends/opensslcnf.config" file:

For versions prior to crypto-policies-20210617-1.gitc776d3e.el8.noarch:
MinProtocol = TLSv1.2

For version crypto-policies-20210617-1.gitc776d3e.el8.noarch and newer:
TLS.MinProtocol = TLSv1.2
DTLS.MinProtocol = DTLSv1.2
A reboot is required for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-32899r1017074_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230255" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230257">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230257r1017077_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010300</xccdf:version>
          <xccdf:title>RHEL 8 system commands must have mode 755 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-32901r792861_fix">Configure the system commands to be protected from unauthorized access.

Run the following command, replacing "[FILE]" with any system command with a mode more permissive than "755".

$ sudo chmod 755 [FILE]</xccdf:fixtext>
          <xccdf:fix id="F-32901r792861_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230257" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230258">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230258r1017078_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010310</xccdf:version>
          <xccdf:title>RHEL 8 system commands must be owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-32902r567521_fix">Configure the system commands to be protected from unauthorized access.

Run the following command, replacing "[FILE]" with any system command file not owned by "root".

$ sudo chown root [FILE]</xccdf:fixtext>
          <xccdf:fix id="F-32902r567521_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230258" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230259">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230259r1017079_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010320</xccdf:version>
          <xccdf:title>RHEL 8 system commands must be group-owned by root or a system account.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-32903r567524_fix">Configure the system commands to be protected from unauthorized access.

Run the following command, replacing "[FILE]" with any system command file not group-owned by "root" or a required system account.

$ sudo chgrp root [FILE]</xccdf:fixtext>
          <xccdf:fix id="F-32903r567524_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230259" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230260">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230260r1017080_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010330</xccdf:version>
          <xccdf:title>RHEL 8 library files must have mode 755 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-32904r792866_fix">Configure the library files to be protected from unauthorized access. Run the following command, replacing "[FILE]" with any library file with a mode more permissive than 755.

$ sudo chmod 755 [FILE]</xccdf:fixtext>
          <xccdf:fix id="F-32904r792866_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230260" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230261">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230261r1017081_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010340</xccdf:version>
          <xccdf:title>RHEL 8 library files must be owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-32905r567530_fix">Configure the system-wide shared library files (/lib, /lib64, /usr/lib and /usr/lib64) to be protected from unauthorized access.

Run the following command, replacing "[FILE]" with any library file not owned by "root".

$ sudo chown root [FILE]</xccdf:fixtext>
          <xccdf:fix id="F-32905r567530_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230261" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230262">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230262r1017082_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010350</xccdf:version>
          <xccdf:title>RHEL 8 library files must be group-owned by root or a system account.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-32906r567533_fix">Configure the system-wide shared library files (/lib, /lib64, /usr/lib and /usr/lib64) to be protected from unauthorized access.

Run the following command, replacing "[FILE]" with any library file not group-owned by "root".

$ sudo chgrp root [FILE]</xccdf:fixtext>
          <xccdf:fix id="F-32906r567533_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230262" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230264">
        <xccdf:title>SRG-OS-000366-GPOS-00153</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230264r1017377_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010370</xccdf:version>
          <xccdf:title>RHEL 8 must prevent the installation of software, patches, service packs, device drivers, or operating system components from a repository without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has been provided by a trusted vendor.

Accordingly, patches, service packs, device drivers, or operating system components must be signed with a certificate recognized and approved by the organization.

Verifying the authenticity of the software prior to installation validates the integrity of the patch or upgrade received from a vendor. This verifies the software has not been tampered with and that it has been provided by a trusted vendor. Self-signed certificates are disallowed by this requirement. The operating system should not have to verify the software again. This requirement does not mandate DoD certificates for this purpose; however, the certificate used to verify the software must be from an approved CA.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001749</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-003992</xccdf:ident>
          <xccdf:fixtext fixref="F-32908r880710_fix">Configure the operating system to verify the signature of packages from a repository prior to install by setting the following option in the "/etc/yum.repos.d/[your_repo_name].repo" file:

     gpgcheck=1</xccdf:fixtext>
          <xccdf:fix id="F-32908r880710_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230264" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230265">
        <xccdf:title>SRG-OS-000366-GPOS-00153</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230265r1017378_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010371</xccdf:version>
          <xccdf:title>RHEL 8 must prevent the installation of software, patches, service packs, device drivers, or operating system components of local packages without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has been provided by a trusted vendor.

Accordingly, patches, service packs, device drivers, or operating system components must be signed with a certificate recognized and approved by the organization.

Verifying the authenticity of the software prior to installation validates the integrity of the patch or upgrade received from a vendor. This verifies the software has not been tampered with and that it has been provided by a trusted vendor. Self-signed certificates are disallowed by this requirement. The operating system should not have to verify the software again. This requirement does not mandate DoD certificates for this purpose; however, the certificate used to verify the software must be from an approved CA.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001749</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-003992</xccdf:ident>
          <xccdf:fixtext fixref="F-32909r567542_fix">Configure the operating system to remove all software components after updated versions have been installed.

Set the "localpkg_gpgcheck" option to "True" in the "/etc/dnf/dnf.conf" file:

localpkg_gpgcheck=True</xccdf:fixtext>
          <xccdf:fix id="F-32909r567542_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230265" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230266">
        <xccdf:title>SRG-OS-000366-GPOS-00153</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230266r1017084_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010372</xccdf:version>
          <xccdf:title>RHEL 8 must prevent the loading of a new kernel for later execution.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has been provided by a trusted vendor.

Disabling kexec_load prevents an unsigned kernel image (that could be a windows kernel or modified vulnerable kernel) from being loaded. Kexec can be used subvert the entire secureboot process and should be avoided at all costs especially since it can load unsigned kernel images.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001749</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-003992</xccdf:ident>
          <xccdf:fixtext fixref="F-32910r858747_fix">Configure the operating system to disable kernel image loading.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

kernel.kexec_load_disabled = 1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-32910r858747_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230266" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230267">
        <xccdf:title>SRG-OS-000312-GPOS-00122</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230267r1017085_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010373</xccdf:version>
          <xccdf:title>RHEL 8 must enable kernel parameters to enforce discretionary access control on symlinks.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which mode (e.g., read or write). Ownership is usually acquired as a consequence of creating the object or via specified ownership assignment. DAC allows the owner to determine who will have access to objects they control. An example of DAC includes user-controlled file permissions.

When discretionary access control policies are implemented, subjects are not constrained with regard to what actions they can take with information for which they have already been granted access. Thus, subjects that have been granted access to information are not prevented from passing (i.e., the subjects have the discretion to pass) the information to other subjects or objects. A subject that is constrained in its operation by Mandatory Access Control policies is still able to operate under the less rigorous constraints of this requirement. Thus, while Mandatory Access Control imposes constraints preventing a subject from passing information to another subject operating at a different sensitivity level, this requirement permits the subject to pass the information to any subject at the same sensitivity level. The policy is bounded by the information system boundary. Once the information is passed outside the control of the information system, additional means may be required to ensure the constraints remain in effect. While the older, more traditional definitions of discretionary access control require identity-based access control, that limitation is not required for this use of discretionary access control.

By enabling the fs.protected_symlinks kernel parameter, symbolic links are permitted to be followed only when outside a sticky world-writable directory, or when the UID of the link and follower match, or when the directory owner matches the symlink's owner. Disallowing such symlinks helps mitigate vulnerabilities based on insecure file system accessed by privileged programs, avoiding an exploitation vector exploiting unsafe use of open() or creat().

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf

Satisfies: SRG-OS-000312-GPOS-00122, SRG-OS-000312-GPOS-00123, SRG-OS-000312-GPOS-00124, SRG-OS-000324-GPOS-00125&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002165</xccdf:ident>
          <xccdf:fixtext fixref="F-32911r858750_fix">Configure the operating system to enable DAC on symlinks.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

fs.protected_symlinks = 1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-32911r858750_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230267" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230268">
        <xccdf:title>SRG-OS-000312-GPOS-00122</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230268r1017086_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010374</xccdf:version>
          <xccdf:title>RHEL 8 must enable kernel parameters to enforce discretionary access control on hardlinks.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which mode (e.g., read or write). Ownership is usually acquired as a consequence of creating the object or via specified ownership assignment. DAC allows the owner to determine who will have access to objects they control. An example of DAC includes user-controlled file permissions.

When discretionary access control policies are implemented, subjects are not constrained with regard to what actions they can take with information for which they have already been granted access. Thus, subjects that have been granted access to information are not prevented from passing (i.e., the subjects have the discretion to pass) the information to other subjects or objects. A subject that is constrained in its operation by Mandatory Access Control policies is still able to operate under the less rigorous constraints of this requirement. Thus, while Mandatory Access Control imposes constraints preventing a subject from passing information to another subject operating at a different sensitivity level, this requirement permits the subject to pass the information to any subject at the same sensitivity level. The policy is bounded by the information system boundary. Once the information is passed outside the control of the information system, additional means may be required to ensure the constraints remain in effect. While the older, more traditional definitions of discretionary access control require identity-based access control, that limitation is not required for this use of discretionary access control.

By enabling the fs.protected_hardlinks kernel parameter, users can no longer create soft or hard links to files they do not own. Disallowing such hardlinks mitigate vulnerabilities based on insecure file system accessed by privileged programs, avoiding an exploitation vector exploiting unsafe use of open() or creat().

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf

Satisfies: SRG-OS-000312-GPOS-00122, SRG-OS-000312-GPOS-00123, SRG-OS-000312-GPOS-00124, SRG-OS-000324-GPOS-00125&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002165</xccdf:ident>
          <xccdf:fixtext fixref="F-32912r858753_fix">Configure the operating system to enable DAC on hardlinks.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

fs.protected_hardlinks = 1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-32912r858753_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230268" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230269">
        <xccdf:title>SRG-OS-000138-GPOS-00069</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230269r1017087_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010375</xccdf:version>
          <xccdf:title>RHEL 8 must restrict access to the kernel message buffer.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of processes acting on behalf of prior users/roles) from being available to any current users/roles (or current processes) that obtain access to shared system resources (e.g., registers, main memory, hard disks) after those resources have been released back to information systems. The control of information in shared resources is also commonly referred to as object reuse and residual information protection.

This requirement generally applies to the design of an information technology product, but it can also apply to the configuration of particular information system components that are, or use, such products. This can be verified by acceptance/validation processes in DoD or other government agencies.

There may be shared resources with configurable protections (e.g., files in storage) that may be assessed on specific information system components.

Restricting access to the kernel message buffer limits access to only root. This prevents attackers from gaining additional system information as a non-privileged user.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001090</xccdf:ident>
          <xccdf:fixtext fixref="F-32913r858755_fix">Configure the operating system to restrict access to the kernel message buffer.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

kernel.dmesg_restrict = 1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-32913r858755_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230269" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230270">
        <xccdf:title>SRG-OS-000138-GPOS-00069</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230270r1017088_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010376</xccdf:version>
          <xccdf:title>RHEL 8 must prevent kernel profiling by unprivileged users.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of processes acting on behalf of prior users/roles) from being available to any current users/roles (or current processes) that obtain access to shared system resources (e.g., registers, main memory, hard disks) after those resources have been released back to information systems. The control of information in shared resources is also commonly referred to as object reuse and residual information protection.

This requirement generally applies to the design of an information technology product, but it can also apply to the configuration of particular information system components that are, or use, such products. This can be verified by acceptance/validation processes in DoD or other government agencies.

There may be shared resources with configurable protections (e.g., files in storage) that may be assessed on specific information system components.

Setting the kernel.perf_event_paranoid kernel parameter to "2" prevents attackers from gaining additional system information as a non-privileged user.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001090</xccdf:ident>
          <xccdf:fixtext fixref="F-32914r858757_fix">Configure the operating system to prevent kernel profiling by unprivileged users.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

kernel.perf_event_paranoid = 2

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-32914r858757_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230270" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230271">
        <xccdf:title>SRG-OS-000373-GPOS-00156</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230271r1050789_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010380</xccdf:version>
          <xccdf:title>RHEL 8 must require users to provide a password for privilege escalation.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without reauthentication, users may access resources or perform tasks for which they do not have authorization.

When operating systems provide the capability to escalate a functional capability, it is critical the user reauthenticate.

Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002038</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004895</xccdf:ident>
          <xccdf:fixtext fixref="F-32915r854025_fix">Remove any occurrence of "NOPASSWD" found in "/etc/sudoers" file or files in the "/etc/sudoers.d" directory.</xccdf:fixtext>
          <xccdf:fix id="F-32915r854025_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230271" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230272">
        <xccdf:title>SRG-OS-000373-GPOS-00156</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230272r1050789_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010381</xccdf:version>
          <xccdf:title>RHEL 8 must require users to reauthenticate for privilege escalation.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without reauthentication, users may access resources or perform tasks for which they do not have authorization.

When operating systems provide the capability to escalate a functional capability, it is critical the user reauthenticate.

Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002038</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004895</xccdf:ident>
          <xccdf:fixtext fixref="F-32916r567563_fix">Remove any occurrence of "!authenticate" found in "/etc/sudoers" file or files in the "/etc/sudoers.d" directory.</xccdf:fixtext>
          <xccdf:fix id="F-32916r567563_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230272" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230273">
        <xccdf:title>SRG-OS-000375-GPOS-00160</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230273r1017381_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010390</xccdf:version>
          <xccdf:title>RHEL 8 must have the packages required for multifactor authentication installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Using an authentication device, such as a DoD Common Access Card (CAC) or token that is separate from the information system, ensures that even if the information system is compromised, credentials stored on the authentication device will not be affected.

Multifactor solutions that require devices separate from information systems gaining access include, for example, hardware tokens providing time-based or challenge-response authenticators and smart cards such as the U.S. Government Personal Identity Verification (PIV) card and the DoD CAC.

A privileged account is defined as an information system account with authorizations of a privileged user.

Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.

This requirement only applies to components where this is specific to the function of the device or has the concept of an organizational user (e.g., VPN, proxy capability). This does not apply to authentication for the purpose of configuring the device itself (management).&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001948</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004046</xccdf:ident>
          <xccdf:fixtext fixref="F-32917r743942_fix">Configure the operating system to implement multifactor authentication by installing the required package with the following command:

$ sudo yum install openssl-pkcs11</xccdf:fixtext>
          <xccdf:fix id="F-32917r743942_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230273" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230277">
        <xccdf:title>SRG-OS-000134-GPOS-00068</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230277r1017090_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010421</xccdf:version>
          <xccdf:title>RHEL 8 must clear the page allocator to prevent use-after-free attacks.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address space layout randomization. Data execution prevention safeguards can be either hardware-enforced or software-enforced with hardware providing the greater strength of mechanism.

Poisoning writes an arbitrary value to freed pages, so any modification or reference to that page after being freed or before being initialized will be detected and prevented. This prevents many types of use-after-free vulnerabilities at little performance cost. Also prevents leak of data and detection of corrupted memory.

Satisfies: SRG-OS-000134-GPOS-00068, SRG-OS-000433-GPOS-00192&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001084</xccdf:ident>
          <xccdf:fixtext fixref="F-32921r567578_fix">Configure RHEL 8 to enable page poisoning with the following commands:

$ sudo grubby --update-kernel=ALL --args="page_poison=1"

Add or modify the following line in "/etc/default/grub" to ensure the configuration survives kernel updates:

GRUB_CMDLINE_LINUX="page_poison=1"</xccdf:fixtext>
          <xccdf:fix id="F-32921r567578_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230277" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230278">
        <xccdf:title>SRG-OS-000134-GPOS-00068</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230278r1017091_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010422</xccdf:version>
          <xccdf:title>RHEL 8 must disable virtual syscalls.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Syscalls are special routines in the Linux kernel, which userspace applications ask to do privileged tasks.  Invoking a system call is an expensive operation because the processor must interrupt the currently executing task and switch context to kernel mode and then back to userspace after the system call completes.  Virtual Syscalls map into user space a page that contains some variables and the implementation of some system calls.  This allows the system calls to be executed in userspace to alleviate the context switching expense.

Virtual Syscalls provide an opportunity of attack for a user who has control of the return instruction pointer.  Disabling vsyscalls help to prevent return oriented programming (ROP) attacks via buffer overflows and overruns. If the system intends to run containers based on RHEL 6 components, then virtual syscalls will need enabled so the components function properly.

Satisfies: SRG-OS-000134-GPOS-00068, SRG-OS-000433-GPOS-00192&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001084</xccdf:ident>
          <xccdf:fixtext fixref="F-32922r743947_fix">Document the use of vsyscalls with the ISSO as an operational requirement or disable them with the following command:

$ sudo grubby --update-kernel=ALL --args="vsyscall=none"

Add or modify the following line in "/etc/default/grub" to ensure the configuration survives kernel updates:

GRUB_CMDLINE_LINUX="vsyscall=none"</xccdf:fixtext>
          <xccdf:fix id="F-32922r743947_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230278" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230279">
        <xccdf:title>SRG-OS-000134-GPOS-00068</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230279r1017092_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010423</xccdf:version>
          <xccdf:title>RHEL 8 must clear SLUB/SLAB objects to prevent use-after-free attacks.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Some adversaries launch attacks with the intent of executing code in nonexecutable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address space layout randomization. Data execution prevention safeguards can be either hardware-enforced or software-enforced with hardware providing the greater strength of mechanism.

Poisoning writes an arbitrary value to freed pages, so any modification or reference to that page after being freed or before being initialized will be detected and prevented. This prevents many types of use-after-free vulnerabilities at little performance cost. Also prevents leak of data and detection of corrupted memory.

SLAB objects are blocks of physically-contiguous memory.  SLUB is the unqueued SLAB allocator.

Satisfies: SRG-OS-000134-GPOS-00068, SRG-OS-000433-GPOS-00192&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001084</xccdf:ident>
          <xccdf:fixtext fixref="F-32923r567584_fix">Configure RHEL 8 to enable poisoning of SLUB/SLAB objects with the following commands:

$ sudo grubby --update-kernel=ALL --args="slub_debug=P"

Add or modify the following line in "/etc/default/grub" to ensure the configuration survives kernel updates:

GRUB_CMDLINE_LINUX="slub_debug=P"</xccdf:fixtext>
          <xccdf:fix id="F-32923r567584_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230279" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230280">
        <xccdf:title>SRG-OS-000433-GPOS-00193</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230280r1017093_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010430</xccdf:version>
          <xccdf:title>RHEL 8 must implement address space layout randomization (ASLR) to protect its memory from unauthorized code execution.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address space layout randomization. Data execution prevention safeguards can be either hardware-enforced or software-enforced with hardware providing the greater strength of mechanism.

Examples of attacks are buffer overflow attacks.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002824</xccdf:ident>
          <xccdf:fixtext fixref="F-32924r858766_fix">Configure the operating system to implement virtual address space randomization.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

kernel.randomize_va_space=2

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Issue the following command to make the changes take effect:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-32924r858766_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230280" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230281">
        <xccdf:title>SRG-OS-000437-GPOS-00194</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230281r958936_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010440</xccdf:version>
          <xccdf:title>YUM must remove all software components after updated versions have been installed on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some information technology products may remove older versions of software automatically from the information system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002617</xccdf:ident>
          <xccdf:fixtext fixref="F-32925r567590_fix">Configure the operating system to remove all software components after updated versions have been installed.

Set the "clean_requirements_on_remove" option to "True" in the "/etc/dnf/dnf.conf" file:

clean_requirements_on_remove=True</xccdf:fixtext>
          <xccdf:fix id="F-32925r567590_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230281" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230282">
        <xccdf:title>SRG-OS-000445-GPOS-00199</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230282r958944_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010450</xccdf:version>
          <xccdf:title>RHEL 8 must enable the SELinux targeted policy.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters.

This requirement applies to operating systems performing security function verification/testing and/or systems and environments that require this functionality.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002696</xccdf:ident>
          <xccdf:fixtext fixref="F-32926r567593_fix">Configure the operating system to verify correct operation of all security functions.

Set the "SELinuxtype" to the "targeted" policy by modifying the "/etc/selinux/config" file to have the following line:

SELINUXTYPE=targeted

A reboot is required for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-32926r567593_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230282" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230283">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230283r1017094_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010460</xccdf:version>
          <xccdf:title>There must be no shosts.equiv files on the RHEL 8 operating system.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The "shosts.equiv" files are used to configure host-based authentication for the system via SSH. Host-based authentication is not sufficient for preventing unauthorized access to the system, as it does not require interactive identification and authentication of a connection request, or for the use of two-factor authentication.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32927r567596_fix">Remove any found "shosts.equiv" files from the system.

$ sudo rm /etc/ssh/shosts.equiv</xccdf:fixtext>
          <xccdf:fix id="F-32927r567596_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230283" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230284">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230284r1017095_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010470</xccdf:version>
          <xccdf:title>There must be no .shosts files on the RHEL 8 operating system.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The ".shosts" files are used to configure host-based authentication for individual users or the system via SSH. Host-based authentication is not sufficient for preventing unauthorized access to the system, as it does not require interactive identification and authentication of a connection request, or for the use of two-factor authentication.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32928r567599_fix">Remove any found ".shosts" files from the system.

$ sudo rm /[path]/[to]/[file]/.shosts</xccdf:fixtext>
          <xccdf:fix id="F-32928r567599_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230284" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230286">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230286r1017097_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010480</xccdf:version>
          <xccdf:title>The RHEL 8 SSH public host key files must have mode 0644 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If a public host key file is modified by an unauthorized user, the SSH service may be compromised.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32930r567605_fix">Change the mode of public host key files under "/etc/ssh" to "0644" with the following command:

$ sudo chmod 0644 /etc/ssh/*key.pub

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32930r567605_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230286" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230287">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230287r1017098_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010490</xccdf:version>
          <xccdf:title>The RHEL 8 SSH private host key files must have mode 0640 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If an unauthorized user obtains the private SSH host key file, the host could be impersonated.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32931r880713_fix">Configure the mode of SSH private host key files under "/etc/ssh" to "0640" with the following command:

     $ sudo chmod 0640 /etc/ssh/ssh_host*key

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

     $ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32931r880713_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230287" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230288">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230288r1017099_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010500</xccdf:version>
          <xccdf:title>The RHEL 8 SSH daemon must perform strict mode checking of home directory configuration files.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If other users have access to modify user-specific SSH configuration files, they may be able to log on to the system as another user.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32932r567611_fix">Configure SSH to perform strict mode checking of home directory configuration files. Uncomment the "StrictModes" keyword in "/etc/ssh/sshd_config" and set the value to "yes":

StrictModes yes

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32932r567611_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230288" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230290">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230290r1017100_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010520</xccdf:version>
          <xccdf:title>The RHEL 8 SSH daemon must not allow authentication using known host’s authentication.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Configuring this setting for the SSH daemon provides additional assurance that remote logon via SSH will require a password, even in the event of misconfiguration elsewhere.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32934r567617_fix">Configure the SSH daemon to not allow authentication using known host’s authentication.

Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "yes":

IgnoreUserKnownHosts yes

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32934r567617_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230290" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230291">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230291r1017102_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010521</xccdf:version>
          <xccdf:title>The RHEL 8 SSH daemon must not allow Kerberos authentication, except to fulfill documented and validated mission requirements.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Configuring these settings for the SSH daemon provides additional assurance that remote logon via SSH will not use unused methods of authentication, even in the event of misconfiguration elsewhere.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32935r743956_fix">Configure the SSH daemon to not allow Kerberos authentication.

Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "no":

KerberosAuthentication no

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32935r743956_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230291" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230292">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230292r1017103_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010540</xccdf:version>
          <xccdf:title>RHEL 8 must use a separate file system for /var.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32936r567623_fix">Migrate the "/var" path onto a separate file system.</xccdf:fixtext>
          <xccdf:fix id="F-32936r567623_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230292" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230293">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230293r1017104_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010541</xccdf:version>
          <xccdf:title>RHEL 8 must use a separate file system for /var/log.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32937r567626_fix">Migrate the "/var/log" path onto a separate file system.</xccdf:fixtext>
          <xccdf:fix id="F-32937r567626_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230293" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230294">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230294r1017105_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010542</xccdf:version>
          <xccdf:title>RHEL 8 must use a separate file system for the system audit data path.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32938r567629_fix">Migrate the system audit data path onto a separate file system.</xccdf:fixtext>
          <xccdf:fix id="F-32938r567629_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230294" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230295">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230295r1017106_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010543</xccdf:version>
          <xccdf:title>A separate RHEL 8 filesystem must be used for the /tmp directory.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32939r567632_fix">Migrate the "/tmp" directory onto a separate file system/partition.</xccdf:fixtext>
          <xccdf:fix id="F-32939r567632_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230295" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230296">
        <xccdf:title>SRG-OS-000109-GPOS-00056</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230296r1017107_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010550</xccdf:version>
          <xccdf:title>RHEL 8 must not permit direct logons to the root account using remote access via SSH.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Even though the communications channel may be encrypted, an additional layer of security is gained by extending the policy of not logging on directly as root. In addition, logging on with a user-specific account provides individual accountability of actions performed on the system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000770</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004045</xccdf:ident>
          <xccdf:fixtext fixref="F-32940r567635_fix">Configure RHEL 8 to stop users from logging on remotely as the "root" user via SSH.

Edit the appropriate "/etc/ssh/sshd_config" file to uncomment or add the line for the "PermitRootLogin" keyword and set its value to "no":

PermitRootLogin no

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32940r567635_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230296" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230298">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230298r1017108_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010561</xccdf:version>
          <xccdf:title>The rsyslog service must be running in RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Configuring RHEL 8 to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across the DoD that reflects the most restrictive security posture consistent with operational requirements.

Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example: registry settings; account, file, directory permission settings; and settings for functions, ports, protocols, services, and remote connections.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32942r567641_fix">Start the auditd service, and enable the rsyslog service with the following commands:

$ sudo systemctl start rsyslog.service

$ sudo systemctl enable rsyslog.service</xccdf:fixtext>
          <xccdf:fix id="F-32942r567641_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230298" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230299">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230299r1017109_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010570</xccdf:version>
          <xccdf:title>RHEL 8 must prevent files with the setuid and setgid bit set from being executed on file systems that contain user home directories.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32943r567644_fix">Configure the "/etc/fstab" to use the "nosuid" option on file systems that contain user home directories for interactive users.</xccdf:fixtext>
          <xccdf:fix id="F-32943r567644_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230299" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230300">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230300r1017110_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010571</xccdf:version>
          <xccdf:title>RHEL 8 must prevent files with the setuid and setgid bit set from being executed on the /boot directory.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxBIOS" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32944r567647_fix">Configure the "/etc/fstab" to use the "nosuid" option on the /boot directory.</xccdf:fixtext>
          <xccdf:fix id="F-32944r567647_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230300" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230301">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230301r1017111_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010580</xccdf:version>
          <xccdf:title>RHEL 8 must prevent special devices on non-root local partitions.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.  The only legitimate location for device files is the /dev directory located on the root partition.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32945r567650_fix">Configure the "/etc/fstab" to use the "nodev" option on all non-root local partitions.</xccdf:fixtext>
          <xccdf:fix id="F-32945r567650_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230301" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230306">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230306r1017116_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010630</xccdf:version>
          <xccdf:title>RHEL 8 must prevent code from being executed on file systems that are imported via Network File System (NFS).</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The "noexec" mount option causes the system not to execute binary files. This option must be used for mounting any file system not containing approved binary as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32950r567665_fix">Configure the "/etc/fstab" to use the "noexec" option on file systems that are being imported via NFS.</xccdf:fixtext>
          <xccdf:fix id="F-32950r567665_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230306" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230307">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230307r1017117_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010640</xccdf:version>
          <xccdf:title>RHEL 8 must prevent special devices on file systems that are imported via Network File System (NFS).</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32951r567668_fix">Configure the "/etc/fstab" to use the "nodev" option on file systems that are being imported via NFS.</xccdf:fixtext>
          <xccdf:fix id="F-32951r567668_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230307" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230308">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230308r1017118_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010650</xccdf:version>
          <xccdf:title>RHEL 8 must prevent files with the setuid and setgid bit set from being executed on file systems that are imported via Network File System (NFS).</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32952r567671_fix">Configure the "/etc/fstab" to use the "nosuid" option on file systems that are being imported via NFS.</xccdf:fixtext>
          <xccdf:fix id="F-32952r567671_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230308" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230311">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230311r1017121_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010671</xccdf:version>
          <xccdf:title>RHEL 8 must disable the kernel.core_pattern.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32955r858768_fix">Configure RHEL 8 to disable storing core dumps.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

kernel.core_pattern = |/bin/false

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-32955r858768_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230311" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230312">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230312r1017122_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010672</xccdf:version>
          <xccdf:title>RHEL 8 must disable acquiring, saving, and processing core dumps.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.

When the kernel invokes systemd-coredumpt to handle a core dump, it runs in privileged mode, and will connect to the socket created by the systemd-coredump.socket unit. This, in turn,  will spawn an unprivileged systemd-coredump@.service instance to process the core dump.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32956r833307_fix">Configure the system to disable the systemd-coredump.socket with the following commands:

$ sudo systemctl disable --now systemd-coredump.socket

$ sudo systemctl mask systemd-coredump.socket

Created symlink /etc/systemd/system/systemd-coredump.socket -&gt; /dev/null

Reload the daemon for this change to take effect.

$ sudo systemctl daemon-reload</xccdf:fixtext>
          <xccdf:fix id="F-32956r833307_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230312" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230313">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230313r1017124_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010673</xccdf:version>
          <xccdf:title>RHEL 8 must disable core dumps for all users.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32957r1017123_fix">Configure the operating system to disable core dumps for all users.

Add the following line to the top of the /etc/security/limits.conf or in a ".conf" file defined in /etc/security/limits.d/:

* hard core 0</xccdf:fixtext>
          <xccdf:fix id="F-32957r1017123_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230313" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230314">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230314r1017125_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010674</xccdf:version>
          <xccdf:title>RHEL 8 must disable storing core dumps.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32958r567689_fix">Configure the operating system to disable storing core dumps for all users.

Add or modify the following line in /etc/systemd/coredump.conf:

Storage=none</xccdf:fixtext>
          <xccdf:fix id="F-32958r567689_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230314" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230315">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230315r1017126_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010675</xccdf:version>
          <xccdf:title>RHEL 8 must disable core dump backtraces.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32959r567692_fix">Configure the operating system to disable core dump backtraces.

Add or modify the following line in /etc/systemd/coredump.conf:

ProcessSizeMax=0</xccdf:fixtext>
          <xccdf:fix id="F-32959r567692_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230315" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230316">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230316r1044801_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010680</xccdf:version>
          <xccdf:title>For RHEL 8 systems using Domain Name Servers (DNS) resolution, at least two name servers must be configured.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;To provide availability for name resolution services, multiple redundant name servers are mandated. A failure in name resolution could lead to the failure of security functions requiring name resolution, which may include time synchronization, centralized authentication, and remote system logging.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32960r567695_fix">Configure the operating system to use two or more name servers for DNS resolution.

By default, "NetworkManager" on RHEL 8 dynamically updates the /etc/resolv.conf file with the DNS settings from active "NetworkManager" connection profiles. However, this feature can be disabled to allow manual configurations.

If manually configuring DNS, edit the "/etc/resolv.conf" file to uncomment or add the two or more "nameserver" option lines with the IP address of local authoritative name servers. If local host resolution is being performed, the "/etc/resolv.conf" file must be empty. An empty "/etc/resolv.conf" file can be created as follows:

$ sudo echo -n &gt; /etc/resolv.conf</xccdf:fixtext>
          <xccdf:fix id="F-32960r567695_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230316" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230320">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230320r1017131_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010720</xccdf:version>
          <xccdf:title>All RHEL 8 local interactive users must have a home directory assigned in the /etc/passwd file.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files they should own.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32964r567707_fix">Assign home directories to all local interactive users on RHEL 8 that currently do not have a home directory assigned.</xccdf:fixtext>
          <xccdf:fix id="F-32964r567707_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230320" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230321">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230321r1017132_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010730</xccdf:version>
          <xccdf:title>All RHEL 8 local interactive user home directories must have mode 0750 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Excessive permissions on local interactive user home directories may allow unauthorized access to user files by other users.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32965r567710_fix">Change the mode of interactive user’s home directories to "0750". To change the mode of a local interactive user’s home directory, use the following command:

Note: The example will be for the user "smithj".

$ sudo chmod 0750 /home/smithj</xccdf:fixtext>
          <xccdf:fix id="F-32965r567710_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230321" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230324">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230324r1017135_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010760</xccdf:version>
          <xccdf:title>All RHEL 8 local interactive user accounts must be assigned a home directory upon creation.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files they should own.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32968r567719_fix">Configure RHEL 8 to assign home directories to all new local interactive users by setting the "CREATE_HOME" parameter in "/etc/login.defs" to "yes" as follows.

CREATE_HOME yes</xccdf:fixtext>
          <xccdf:fix id="F-32968r567719_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230324" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230325">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230325r1017136_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010770</xccdf:version>
          <xccdf:title>All RHEL 8 local initialization files must have mode 0740 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Local initialization files are used to configure the user's shell environment upon logon. Malicious modification of these files could compromise accounts upon logon.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32969r917878_fix">Set the mode of the local initialization files to "0740" with the following command:

Note: The example will be for the smithj user, who has a home directory of "/home/smithj".

     $ sudo chmod 0740 /home/smithj/.&lt;INIT_FILE&gt;</xccdf:fixtext>
          <xccdf:fix id="F-32969r917878_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230325" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230328">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230328r1017139_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010800</xccdf:version>
          <xccdf:title>A separate RHEL 8 filesystem must be used for user home directories (such as /home or an equivalent).</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32972r902722_fix">Migrate the "/home" directory onto a separate file system.</xccdf:fixtext>
          <xccdf:fix id="F-32972r902722_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230328" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230329">
        <xccdf:title>SRG-OS-000480-GPOS-00229</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230329r1017140_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010820</xccdf:version>
          <xccdf:title>Unattended or automatic logon via the RHEL 8 graphical user interface must not be allowed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Failure to restrict system access to authenticated users negatively impacts operating system security.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxGnome" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32973r567734_fix">Configure the operating system to not allow an unattended or automatic logon to the system via a graphical user interface.

Add or edit the line for the "AutomaticLoginEnable" parameter in the [daemon] section of the "/etc/gdm/custom.conf" file to "false":

[daemon]
AutomaticLoginEnable=false</xccdf:fixtext>
          <xccdf:fix id="F-32973r567734_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230329" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230330">
        <xccdf:title>SRG-OS-000480-GPOS-00229</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230330r1017141_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010830</xccdf:version>
          <xccdf:title>RHEL 8 must not allow users to override SSH environment variables.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;SSH environment options potentially allow users to bypass access restriction in some configurations.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-32974r567737_fix">Configure RHEL 8 to allow the SSH daemon to not allow unattended or automatic logon to the system.

Add or edit the following line in the "/etc/ssh/sshd_config" file:

PermitUserEnvironment no

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-32974r567737_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230330" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230332">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230332r1017144_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020010</xccdf:version>
          <xccdf:title>RHEL 8 must automatically lock an account when three unsuccessful logon attempts occur.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-1_or_Lower" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32976r567743_fix">Configure the operating system to lock an account when three unsuccessful logon attempts occur.

Add/Modify the appropriate sections of the "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" files to match the following lines:

auth required pam_faillock.so preauth dir=/var/log/faillock silent audit deny=3 even_deny_root fail_interval=900 unlock_time=0
auth required pam_faillock.so authfail dir=/var/log/faillock unlock_time=0
account required pam_faillock.so

The "sssd" service must be restarted for the changes to take effect. To restart the "sssd" service, run the following command:

$ sudo systemctl restart sssd.service</xccdf:fixtext>
          <xccdf:fix id="F-32976r567743_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230332" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230333">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230333r1017145_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020011</xccdf:version>
          <xccdf:title>RHEL 8 must automatically lock an account when three unsuccessful logon attempts occur.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-2_or_Higher" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32977r743965_fix">Configure the operating system to lock an account when three unsuccessful logon attempts occur.

Add/Modify the "/etc/security/faillock.conf" file to match the following line:

deny = 3</xccdf:fixtext>
          <xccdf:fix id="F-32977r743965_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230333" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230334">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230334r1017146_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020012</xccdf:version>
          <xccdf:title>RHEL 8 must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-1_or_Lower" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32978r567749_fix">Configure the operating system to lock an account when three unsuccessful logon attempts occur in 15 minutes.

Add/Modify the appropriate sections of the "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" files to match the following lines:

auth required pam_faillock.so preauth dir=/var/log/faillock silent audit deny=3 even_deny_root fail_interval=900 unlock_time=0
auth required pam_faillock.so authfail dir=/var/log/faillock unlock_time=0
account required pam_faillock.so

The "sssd" service must be restarted for the changes to take effect. To restart the "sssd" service, run the following command:

$ sudo systemctl restart sssd.service</xccdf:fixtext>
          <xccdf:fix id="F-32978r567749_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230334" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230335">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230335r1017147_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020013</xccdf:version>
          <xccdf:title>RHEL 8 must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-2_or_Higher" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32979r743968_fix">Configure the operating system to lock an account when three unsuccessful logon attempts occur in 15 minutes.

Add/Modify the "/etc/security/faillock.conf" file to match the following line:

fail_interval = 900</xccdf:fixtext>
          <xccdf:fix id="F-32979r743968_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230335" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230336">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230336r1017148_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020014</xccdf:version>
          <xccdf:title>RHEL 8 must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-1_or_Lower" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32980r567755_fix">Configure the operating system to lock an account until released by an administrator when three unsuccessful logon attempts occur in 15 minutes.

Add/Modify the appropriate sections of the "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" files to match the following lines:

auth required pam_faillock.so preauth dir=/var/log/faillock silent audit deny=3 even_deny_root fail_interval=900 unlock_time=0
auth required pam_faillock.so authfail dir=/var/log/faillock unlock_time=0
account required pam_faillock.so

The "sssd" service must be restarted for the changes to take effect. To restart the "sssd" service, run the following command:

$ sudo systemctl restart sssd.service</xccdf:fixtext>
          <xccdf:fix id="F-32980r567755_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230336" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230337">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230337r1017149_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020015</xccdf:version>
          <xccdf:title>RHEL 8 must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-2_or_Higher" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32981r743971_fix">Configure the operating system to lock an account until released by an administrator when three unsuccessful logon attempts occur in 15 minutes.

Add/Modify the "/etc/security/faillock.conf" file to match the following line:

unlock_time = 0</xccdf:fixtext>
          <xccdf:fix id="F-32981r743971_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230337" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230340">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230340r1017152_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020018</xccdf:version>
          <xccdf:title>RHEL 8 must prevent system messages from being presented when three unsuccessful logon attempts occur.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-1_or_Lower" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32984r567767_fix">Configure the operating system to prevent informative messages from being presented at logon attempts.

Add/Modify the appropriate sections of the "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" files to match the following lines:

auth required pam_faillock.so preauth dir=/var/log/faillock silent audit deny=3 even_deny_root fail_interval=900 unlock_time=0
auth required pam_faillock.so authfail dir=/var/log/faillock unlock_time=0
account required pam_faillock.so

The "sssd" service must be restarted for the changes to take effect. To restart the "sssd" service, run the following command:

$ sudo systemctl restart sssd.service</xccdf:fixtext>
          <xccdf:fix id="F-32984r567767_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230340" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230341">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230341r1017153_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020019</xccdf:version>
          <xccdf:title>RHEL 8 must prevent system messages from being presented when three unsuccessful logon attempts occur.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-2_or_Higher" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32985r743977_fix">Configure the operating system to prevent informative messages from being presented at logon attempts.

Add/Modify the "/etc/security/faillock.conf" file to match the following line:

silent</xccdf:fixtext>
          <xccdf:fix id="F-32985r743977_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230341" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230342">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230342r1017154_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020020</xccdf:version>
          <xccdf:title>RHEL 8 must log user name information when unsuccessful logon attempts occur.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module. Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-1_or_Lower" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32986r567773_fix">Configure the operating system to log user name information when unsuccessful logon attempts occur.

Add/Modify the appropriate sections of the "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" files to match the following lines:

auth required pam_faillock.so preauth dir=/var/log/faillock silent audit deny=3 even_deny_root fail_interval=900 unlock_time=0
auth required pam_faillock.so authfail dir=/var/log/faillock unlock_time=0
account required pam_faillock.so

The "sssd" service must be restarted for the changes to take effect. To restart the "sssd" service, run the following command:

$ sudo systemctl restart sssd.service</xccdf:fixtext>
          <xccdf:fix id="F-32986r567773_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230342" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230343">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230343r1017155_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020021</xccdf:version>
          <xccdf:title>RHEL 8 must log user name information when unsuccessful logon attempts occur.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-2_or_Higher" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32987r743980_fix">Configure the operating system to log user name information when unsuccessful logon attempts occur.

Add/Modify the "/etc/security/faillock.conf" file to match the following line:

audit</xccdf:fixtext>
          <xccdf:fix id="F-32987r743980_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230343" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230344">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230344r1017156_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020022</xccdf:version>
          <xccdf:title>RHEL 8 must include root when automatically locking an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module. Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-1_or_Lower" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32988r567779_fix">Configure the operating system to include root when locking an account after three unsuccessful logon attempts occur in 15 minutes.

Add/Modify the appropriate sections of the "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" files to match the following lines:

auth required pam_faillock.so preauth dir=/var/log/faillock silent audit deny=3 even_deny_root fail_interval=900 unlock_time=0
auth required pam_faillock.so authfail dir=/var/log/faillock unlock_time=0
account required pam_faillock.so

The "sssd" service must be restarted for the changes to take effect. To restart the "sssd" service, run the following command:

$ sudo systemctl restart sssd.service</xccdf:fixtext>
          <xccdf:fix id="F-32988r567779_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230344" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230345">
        <xccdf:title>SRG-OS-000021-GPOS-00005</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230345r1017157_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020023</xccdf:version>
          <xccdf:title>RHEL 8 must include root when automatically locking an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-2_or_Higher" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000044</xccdf:ident>
          <xccdf:fixtext fixref="F-32989r743983_fix">Configure the operating system to include root when locking an account after three unsuccessful logon attempts occur in 15 minutes.

Add/Modify the "/etc/security/faillock.conf" file to match the following line:

even_deny_root</xccdf:fixtext>
          <xccdf:fix id="F-32989r743983_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230345" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230346">
        <xccdf:title>SRG-OS-000027-GPOS-00008</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230346r1017159_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-020024</xccdf:version>
          <xccdf:title>RHEL 8 must limit the number of concurrent sessions to ten for all accounts and/or account types.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Operating system management includes the ability to control the number of users and user sessions that utilize an operating system. Limiting the number of allowed users and sessions per user is helpful in reducing the risks related to DoS attacks.

This requirement addresses concurrent sessions for information system accounts and does not address concurrent sessions by single users via multiple system accounts. The maximum number of concurrent sessions should be defined based on mission needs and the operational environment for each system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000054</xccdf:ident>
          <xccdf:fixtext fixref="F-32990r1017158_fix">Configure the operating system to limit the number of concurrent sessions to "10" for all accounts and/or account types.

Add the following line to the top of the /etc/security/limits.conf or in a ".conf" file defined in /etc/security/limits.d/:

* hard maxlogins 10</xccdf:fixtext>
          <xccdf:fix id="F-32990r1017158_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230346" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230347">
        <xccdf:title>SRG-OS-000028-GPOS-00009</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230347r1017160_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020030</xccdf:version>
          <xccdf:title>RHEL 8 must enable a user session lock until that user re-establishes access using established identification and authentication procedures for graphical user sessions.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence.

The session lock is implemented at the point where session activity can be determined.

Regardless of where the session lock is determined and implemented, once invoked, the session lock must remain in place until the user reauthenticates. No other activity aside from reauthentication must unlock the system.

Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000030-GPOS-00011&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxGnome" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000056</xccdf:ident>
          <xccdf:fixtext fixref="F-32991r567788_fix">Configure the operating system to enable a user's session lock until that user re-establishes access using established identification and authentication procedures.

Create a database to contain the system-wide screensaver settings (if it does not already exist) with the following example:

$ sudo vi /etc/dconf/db/local.d/00-screensaver

Edit the "[org/gnome/desktop/screensaver]" section of the database file and add or update the following lines:

# Set this to true to lock the screen when the screensaver activates
lock-enabled=true

Update the system databases:

$ sudo dconf update</xccdf:fixtext>
          <xccdf:fix id="F-32991r567788_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230347" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230351">
        <xccdf:title>SRG-OS-000028-GPOS-00009</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230351r1017164_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020050</xccdf:version>
          <xccdf:title>RHEL 8 must be able to initiate directly a session lock for all connection types using smartcard when the smartcard is removed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence.

The session lock is implemented at the point where session activity can be determined. Rather than be forced to wait for a period of time to expire before the user session can be locked, RHEL 8 needs to provide users with the ability to manually invoke a session lock so users can secure their session if it is necessary to temporarily vacate the immediate physical vicinity.

Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000030-GPOS-00011&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxGnome" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000056</xccdf:ident>
          <xccdf:fixtext fixref="F-32995r792898_fix">Configure the operating system to enable a user's session lock until that user re-establishes access using established identification and authentication procedures.

Select/Create an authselect profile and incorporate the "with-smartcard-lock-on-removal" feature with the following example:

$ sudo authselect select sssd with-smartcard with-smartcard-lock-on-removal

Alternatively, the dconf settings can be edited in the /etc/dconf/db/* location.

Edit or add the "[org/gnome/settings-daemon/peripherals/smartcard]" section of the database file and add or update the following lines:

removal-action='lock-screen'

Update the system databases:

$ sudo dconf update</xccdf:fixtext>
          <xccdf:fix id="F-32995r792898_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230351" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230354">
        <xccdf:title>SRG-OS-000029-GPOS-00010</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230354r1017167_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020080</xccdf:version>
          <xccdf:title>RHEL 8 must prevent a user from overriding the session lock-delay setting for the graphical user interface.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature of the absence. Rather than relying on the user to manually lock their operating system session prior to vacating the vicinity, operating systems need to be able to identify when a user's session has idled and take action to initiate the session lock.

The session lock is implemented at the point where session activity can be determined and/or controlled.

Implementing session settings will have little value if a user is able to manipulate these settings from the defaults prescribed in the other requirements of this implementation guide.

Locking these settings from non-privileged users is crucial to maintaining a protected baseline.

Satisfies: SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012, SRG-OS-000480-GPOS-00227&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxGnome" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000057</xccdf:ident>
          <xccdf:fixtext fixref="F-32998r743989_fix">Configure the operating system to prevent a user from overriding settings for graphical user interfaces.

Create a database to contain the system-wide screensaver settings (if it does not already exist) with the following command: 

Note: The example below is using the database "local" for the system, so if the system is using another database in "/etc/dconf/profile/user", the file should be created under the appropriate subdirectory.

$ sudo touch /etc/dconf/db/local.d/locks/session

Add the following setting to prevent non-privileged users from modifying it:

/org/gnome/desktop/screensaver/lock-delay</xccdf:fixtext>
          <xccdf:fix id="F-32998r743989_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230354" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230356">
        <xccdf:title>SRG-OS-000069-GPOS-00037</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230356r982195_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020100</xccdf:version>
          <xccdf:title>RHEL 8 must ensure the password complexity module is enabled in the password-auth file.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. This is set in both:
/etc/pam.d/password-auth
/etc/pam.d/system-auth&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33000r902727_fix">Configure the operating system to use "pwquality" to enforce password complexity rules.

Add the following line to the "/etc/pam.d/password-auth" file (or modify the line to have the required value):

     password requisite pam_pwquality.so</xccdf:fixtext>
          <xccdf:fix id="F-33000r902727_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230356" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230357">
        <xccdf:title>SRG-OS-000069-GPOS-00037</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230357r1017169_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020110</xccdf:version>
          <xccdf:title>RHEL 8 must enforce password complexity by requiring that at least one uppercase character be used.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes pwquality as a mechanism to enforce password complexity. Note that in order to require uppercase characters, without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000192</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33001r858770_fix">Configure the operating system to enforce password complexity by requiring that at least one uppercase character be used by setting the "ucredit" option.

Add the following line to /etc/security/pwquality.conf (or modify the line to have the required value):

ucredit = -1

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33001r858770_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230357" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230358">
        <xccdf:title>SRG-OS-000070-GPOS-00038</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230358r1017170_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020120</xccdf:version>
          <xccdf:title>RHEL 8 must enforce password complexity by requiring that at least one lower-case character be used.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes pwquality as a mechanism to enforce password complexity. Note that in order to require lower-case characters without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000193</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33002r858772_fix">Configure the operating system to enforce password complexity by requiring that at least one lower-case character be used by setting the "lcredit" option.

Add the following line to /etc/security/pwquality.conf (or modify the line to have the required value):

lcredit = -1

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33002r858772_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230358" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230359">
        <xccdf:title>SRG-OS-000071-GPOS-00039</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230359r1017171_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020130</xccdf:version>
          <xccdf:title>RHEL 8 must enforce password complexity by requiring that at least one numeric character be used.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. Note that in order to require numeric characters, without degrading the minlen value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000194</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33003r858774_fix">Configure the operating system to enforce password complexity by requiring that at least one numeric character be used by setting the "dcredit" option.

Add the following line to /etc/security/pwquality.conf (or modify the line to have the required value):

dcredit = -1

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33003r858774_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230359" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230360">
        <xccdf:title>SRG-OS-000072-GPOS-00040</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230360r1017172_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020140</xccdf:version>
          <xccdf:title>RHEL 8 must require the maximum number of repeating characters of the same character class be limited to four when passwords are changed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. The "maxclassrepeat" option sets the maximum number of allowed same consecutive characters in the same class in the new password.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000195</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33004r858776_fix">Configure the operating system to require the change of the number of repeating characters of the same character class when passwords are changed by setting the "maxclassrepeat" option.

Add the following line to "/etc/security/pwquality.conf" conf (or modify the line to have the required value):

maxclassrepeat = 4

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33004r858776_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230360" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230361">
        <xccdf:title>SRG-OS-000072-GPOS-00040</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230361r1017173_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020150</xccdf:version>
          <xccdf:title>RHEL 8 must require the maximum number of repeating characters be limited to three when passwords are changed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. The "maxrepeat" option sets the maximum number of allowed same consecutive characters in a new password.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000195</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33005r858778_fix">Configure the operating system to require the change of the number of repeating consecutive characters when passwords are changed by setting the "maxrepeat" option.

Add the following line to "/etc/security/pwquality.conf conf" (or modify the line to have the required value):

maxrepeat = 3

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33005r858778_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230361" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230362">
        <xccdf:title>SRG-OS-000072-GPOS-00040</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230362r1017174_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020160</xccdf:version>
          <xccdf:title>RHEL 8 must require the change of at least four character classes when passwords are changed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. The "minclass" option sets the minimum number of required classes of characters for the new password (digits, uppercase, lowercase, others).&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000195</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33006r858780_fix">Configure the operating system to require the change of at least four character classes when passwords are changed by setting the "minclass" option.

Add the following line to "/etc/security/pwquality.conf conf" (or modify the line to have the required value):

minclass = 4

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33006r858780_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230362" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230363">
        <xccdf:title>SRG-OS-000072-GPOS-00040</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230363r1017175_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020170</xccdf:version>
          <xccdf:title>RHEL 8 must require the change of at least 8 characters when passwords are changed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. The "difok" option sets the number of characters in a password that must not be present in the old password.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000195</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33007r858782_fix">Configure the operating system to require the change of at least eight of the total number of characters when passwords are changed by setting the "difok" option.

Add the following line to "/etc/security/pwquality.conf" (or modify the line to have the required value):

difok = 8

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33007r858782_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230363" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230364">
        <xccdf:title>SRG-OS-000075-GPOS-00043</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230364r1017176_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020180</xccdf:version>
          <xccdf:title>RHEL 8 passwords must have a 24 hours/1 day minimum password lifetime restriction in /etc/shadow.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000198</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33008r567839_fix">Configure non-compliant accounts to enforce a 24 hours/1 day minimum password lifetime:

$ sudo chage -m 1 [user]</xccdf:fixtext>
          <xccdf:fix id="F-33008r567839_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230364" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230365">
        <xccdf:title>SRG-OS-000075-GPOS-00043</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230365r1017177_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020190</xccdf:version>
          <xccdf:title>RHEL 8 passwords for new users or password changes must have a 24 hours/1 day minimum password lifetime restriction in /etc/login.defs.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000198</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33009r567842_fix">Configure the operating system to enforce 24 hours/1 day as the minimum password lifetime.

Add the following line in "/etc/login.defs" (or modify the line to have the required value):

PASS_MIN_DAYS 1</xccdf:fixtext>
          <xccdf:fix id="F-33009r567842_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230365" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230366">
        <xccdf:title>SRG-OS-000076-GPOS-00044</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230366r1038967_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020200</xccdf:version>
          <xccdf:title>RHEL 8 user account passwords must have a 60-day maximum password lifetime restriction.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If RHEL 8 does not limit the lifetime of passwords and force users to change their passwords, there is the risk that RHEL 8 passwords could be compromised.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000199</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33010r567845_fix">Configure RHEL 8 to enforce a 60-day maximum password lifetime.

Add, or modify the following line in the "/etc/login.defs" file:

PASS_MAX_DAYS 60</xccdf:fixtext>
          <xccdf:fix id="F-33010r567845_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230366" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230367">
        <xccdf:title>SRG-OS-000076-GPOS-00044</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230367r1038967_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020210</xccdf:version>
          <xccdf:title>RHEL 8 user account passwords must be configured so that existing passwords are restricted to a 60-day maximum lifetime.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If RHEL 8 does not limit the lifetime of passwords and force users to change their passwords, there is the risk that RHEL 8 passwords could be compromised.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000199</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33011r567848_fix">Configure non-compliant accounts to enforce a 60-day maximum password lifetime restriction.

$ sudo chage -M 60 [user]</xccdf:fixtext>
          <xccdf:fix id="F-33011r567848_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230367" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230369">
        <xccdf:title>SRG-OS-000078-GPOS-00046</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230369r1017181_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020230</xccdf:version>
          <xccdf:title>RHEL 8 passwords must have a minimum of 15 characters.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised.

Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password. Use of more characters in a password helps to increase exponentially the time and/or resources required to compromise the password.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. Configurations are set in the "etc/security/pwquality.conf" file.

The "minlen", sometimes noted as minimum length, acts as a "score" of complexity based on the credit components of the "pwquality" module. By setting the credit components to a negative value, not only will those components be required, they will not count towards the total "score" of "minlen". This will enable "minlen" to require a 15-character minimum.

The DoD minimum password requirement is 15 characters.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000205</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33013r858784_fix">Configure operating system to enforce a minimum 15-character password length.

Add the following line to "/etc/security/pwquality.conf" (or modify the line to have the required value):

minlen = 15

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33013r858784_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230369" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230370">
        <xccdf:title>SRG-OS-000078-GPOS-00046</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230370r1017182_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020231</xccdf:version>
          <xccdf:title>RHEL 8 passwords for new users must have a minimum of 15 characters.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised.

Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password. Use of more characters in a password helps to increase exponentially the time and/or resources required to compromise the password.

The DoD minimum password requirement is 15 characters.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000205</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33014r567857_fix">Configure operating system to enforce a minimum 15-character password length for new user accounts.

Add, or modify the following line in the "/etc/login.defs" file:

PASS_MIN_LEN 15</xccdf:fixtext>
          <xccdf:fix id="F-33014r567857_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230370" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230371">
        <xccdf:title>SRG-OS-000104-GPOS-00051</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230371r1017183_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020240</xccdf:version>
          <xccdf:title>RHEL 8 duplicate User IDs (UIDs) must not exist for interactive users.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;To ensure accountability and prevent unauthenticated access, interactive users must be identified and authenticated to prevent potential misuse and compromise of the system.

Interactive users include organizational employees or individuals the organization deems to have equivalent status of employees (e.g., contractors). Interactive users (and processes acting on behalf of users) must be uniquely identified and authenticated to all accesses, except for the following:

1) Accesses explicitly identified and documented by the organization. Organizations document specific user actions that can be performed on the information system without identification or authentication; and

2) Accesses that occur through authorized use of group authenticators without individual authentication. Organizations may require unique identification of individuals in group accounts (e.g., shared privilege accounts) or for detailed accountability of individual activity.

Satisfies: SRG-OS-000104-GPOS-00051, SRG-OS-000121-GPOS-00062, SRG-OS-000042-GPOS-00020&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000764</xccdf:ident>
          <xccdf:fixtext fixref="F-33015r567860_fix">Edit the file "/etc/passwd" and provide each interactive user account that has a duplicate User ID (UID) with a unique UID.</xccdf:fixtext>
          <xccdf:fix id="F-33015r567860_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230371" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230373">
        <xccdf:title>SRG-OS-000118-GPOS-00060</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230373r1017185_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020260</xccdf:version>
          <xccdf:title>RHEL 8 account identifiers (individuals, groups, roles, and devices) must be disabled after 35 days of inactivity.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potentially obtain undetected access to the system. Owners of inactive accounts will not notice if unauthorized access to their user account has been obtained.

RHEL 8 needs to track periods of inactivity and disable application identifiers after 35 days of inactivity.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000795</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-003627</xccdf:ident>
          <xccdf:fixtext fixref="F-33017r567866_fix">Configure RHEL 8 to disable account identifiers after 35 days of inactivity after the password expiration. 

Run the following command to change the configuration for useradd:

$ sudo useradd -D -f 35

DoD recommendation is 35 days, but a lower value is acceptable. The value "-1" will disable this feature, and "0" will disable the account immediately after the password expires.</xccdf:fixtext>
          <xccdf:fix id="F-33017r567866_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230373" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230375">
        <xccdf:title>SRG-OS-000266-GPOS-00101</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230375r1017187_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020280</xccdf:version>
          <xccdf:title>All RHEL 8 passwords must contain at least one special character.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. Note that to require special characters without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001619</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004066</xccdf:ident>
          <xccdf:fixtext fixref="F-33019r858786_fix">Configure the operating system to enforce password complexity by requiring that at least one special character be used by setting the "ocredit" option.

Add the following line to /etc/security/pwquality.conf (or modify the line to have the required value):

ocredit = -1

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33019r858786_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230375" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230376">
        <xccdf:title>SRG-OS-000383-GPOS-00166</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230376r958828_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020290</xccdf:version>
          <xccdf:title>RHEL 8 must prohibit the use of cached authentications after one day.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If cached authentication information is out-of-date, the validity of the authentication information may be questionable.

RHEL 8 includes multiple options for configuring authentication, but this requirement will be focus on the System Security Services Daemon (SSSD). By default sssd does not cache credentials.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002007</xccdf:ident>
          <xccdf:fixtext fixref="F-33020r942947_fix">Configure the SSSD to prohibit the use of cached authentications after one day.

Add or change the following line in "/etc/sssd/sssd.conf" just below the line "[pam]".

     offline_credentials_expiration = 1</xccdf:fixtext>
          <xccdf:fix id="F-33020r942947_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230376" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230377">
        <xccdf:title>SRG-OS-000480-GPOS-00225</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230377r1017188_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020300</xccdf:version>
          <xccdf:title>RHEL 8 must prevent the use of dictionary words for passwords.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 allows the user to select passwords based on dictionary words, this increases the chances of password compromise by increasing the opportunity for successful guesses, and brute-force attacks.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33021r858788_fix">Configure RHEL 8 to prevent the use of dictionary words for passwords.

Add or update the following line in the "/etc/security/pwquality.conf" file or a configuration file in the /etc/pwquality.conf.d/ directory to contain the "dictcheck" parameter:

dictcheck=1

Remove any configurations that conflict with the above value.</xccdf:fixtext>
          <xccdf:fix id="F-33021r858788_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230377" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230378">
        <xccdf:title>SRG-OS-000480-GPOS-00226</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230378r1017189_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020310</xccdf:version>
          <xccdf:title>RHEL 8 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Configuring the operating system to implement organization-wide security implementation guides and security checklists verifies compliance with federal standards and establishes a common security baseline across the DoD that reflects the most restrictive security posture consistent with operational requirements.

Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example, registry settings; account, file, and directory permission settings; and settings for functions, ports, protocols, services, and remote connections.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33022r567881_fix">Configure the operating system to enforce a delay of at least four seconds between logon prompts following a failed console logon attempt.

Modify the "/etc/login.defs" file to set the "FAIL_DELAY" parameter to "4" or greater:

FAIL_DELAY 4</xccdf:fixtext>
          <xccdf:fix id="F-33022r567881_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230378" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230380">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230380r1017191_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-020330</xccdf:version>
          <xccdf:title>RHEL 8 must not allow accounts configured with blank or null passwords.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords should never be used in operational environments.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33024r743992_fix">Edit the following line in "etc/ssh/sshd_config" to prevent logons with empty passwords.

PermitEmptyPasswords no

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-33024r743992_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230380" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230381">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230381r991589_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-020340</xccdf:version>
          <xccdf:title>RHEL 8 must display the date and time of the last successful account logon upon logon.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Providing users with feedback on when account accesses last occurred facilitates user recognition and reporting of unauthorized account use.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000052</xccdf:ident>
          <xccdf:fixtext fixref="F-33025r567890_fix">Configure the operating system to provide users with feedback on when account accesses last occurred by setting the required configuration options in "/etc/pam.d/postlogin". 

Add the following line to the top of "/etc/pam.d/postlogin":

session required pam_lastlog.so showfailed</xccdf:fixtext>
          <xccdf:fix id="F-33025r567890_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230381" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230382">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230382r991589_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020350</xccdf:version>
          <xccdf:title>RHEL 8 must display the date and time of the last successful account logon upon an SSH logon.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Providing users with feedback on when account accesses via SSH last occurred facilitates user recognition and reporting of unauthorized account use.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000052</xccdf:ident>
          <xccdf:fixtext fixref="F-33026r567893_fix">Configure SSH to provide users with feedback on when account accesses last occurred by setting the required configuration options in "/etc/pam.d/sshd" or in the "sshd_config" file used by the system ("/etc/ssh/sshd_config" will be used in the example) (this file may be named differently or be in a different location if using a version of SSH that is provided by a third-party vendor).

Modify the "PrintLastLog" line in "/etc/ssh/sshd_config" to match the following:

PrintLastLog yes

The SSH service must be restarted for changes to "sshd_config" to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33026r567893_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230382" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230383">
        <xccdf:title>SRG-OS-000480-GPOS-00228</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230383r1017192_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020351</xccdf:version>
          <xccdf:title>RHEL 8 must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Setting the most restrictive default permissions ensures that when new accounts are created, they do not have unnecessary access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33027r567896_fix">Configure the operating system to define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

Add or edit the line for the "UMASK" parameter in "/etc/login.defs" file to "077":

UMASK 077</xccdf:fixtext>
          <xccdf:fix id="F-33027r567896_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230383" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230386">
        <xccdf:title>SRG-OS-000326-GPOS-00126</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230386r958730_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030000</xccdf:version>
          <xccdf:title>The RHEL 8 audit system must be configured to audit the execution of privileged functions and prevent all software from executing at higher privilege levels than users executing the software.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts on organizations. Auditing the use of privileged functions is one way to detect such misuse and identify the risk from insider threats and the advanced persistent threat.

Satisfies: SRG-OS-000326-GPOS-00126, SRG-OS-000327-GPOS-00127&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002233</xccdf:ident>
          <xccdf:fixtext fixref="F-33030r567905_fix">Configure RHEL 8 to audit the execution of the "execve" system call.

Add or update the following file system rules to "/etc/audit/rules.d/audit.rules":

-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k execpriv 
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k execpriv

-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k execpriv 
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k execpriv 

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33030r567905_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230386" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230388">
        <xccdf:title>SRG-OS-000046-GPOS-00022</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230388r1017196_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030020</xccdf:version>
          <xccdf:title>The RHEL 8 System Administrator (SA) and Information System Security Officer (ISSO) (at a minimum) must be alerted of an audit processing failure event.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability, and system operation may be adversely affected.

Audit processing failures include software/hardware errors, failures in the audit capturing mechanisms, and audit storage capacity being reached or exceeded.

This requirement applies to each audit data storage repository (i.e., distinct information system component where audit records are stored), the centralized audit storage capacity of organizations (i.e., all audit data storage repositories combined), or both.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000139</xccdf:ident>
          <xccdf:fixtext fixref="F-33032r567911_fix">Configure "auditd" service to notify the SA and ISSO in the event of an audit processing failure. 

Edit the following line in "/etc/audit/auditd.conf" to ensure that administrators are notified via email for those situations:

action_mail_acct = root</xccdf:fixtext>
          <xccdf:fix id="F-33032r567911_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230388" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230389">
        <xccdf:title>SRG-OS-000046-GPOS-00022</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230389r1017197_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030030</xccdf:version>
          <xccdf:title>The RHEL 8 Information System Security Officer (ISSO) and System Administrator (SA) (at a minimum) must have mail aliases to be notified of an audit processing failure.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability, and system operation may be adversely affected.

Audit processing failures include software/hardware errors, failures in the audit capturing mechanisms, and audit storage capacity being reached or exceeded.

This requirement applies to each audit data storage repository (i.e., distinct information system component where audit records are stored), the centralized audit storage capacity of organizations (i.e., all audit data storage repositories combined), or both.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000139</xccdf:ident>
          <xccdf:fixtext fixref="F-33033r567914_fix">Configure RHEL 8 to notify administrators in the event of an audit processing failure.

Add/update the following line in "/etc/aliases":

postmaster: root</xccdf:fixtext>
          <xccdf:fix id="F-33033r567914_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230389" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230390">
        <xccdf:title>SRG-OS-000047-GPOS-00023</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230390r1038966_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030040</xccdf:version>
          <xccdf:title>The RHEL 8 System must take appropriate action when an audit processing failure occurs.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability, and system operation may be adversely affected.

Audit processing failures include software/hardware errors, failures in the audit capturing mechanisms, and audit storage capacity being reached or exceeded.

This requirement applies to each audit data storage repository (i.e., distinct information system component where audit records are stored), the centralized audit storage capacity of organizations (i.e., all audit data storage repositories combined), or both.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000140</xccdf:ident>
          <xccdf:fixtext fixref="F-33034r567917_fix">Configure RHEL 8 to shut down by default upon audit failure (unless availability is an overriding concern).

Add or update the following line (depending on configuration "disk_error_action" can be set to "SYSLOG" or "SINGLE" depending on configuration) in "/etc/audit/auditd.conf" file:

disk_error_action = HALT

If availability has been determined to be more important, and this decision is documented with the ISSO, configure the operating system to notify system administration staff and ISSO staff in the event of an audit processing failure by setting the "disk_error_action" to "SYSLOG".</xccdf:fixtext>
          <xccdf:fix id="F-33034r567917_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230390" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230392">
        <xccdf:title>SRG-OS-000047-GPOS-00023</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230392r1038966_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030060</xccdf:version>
          <xccdf:title>The RHEL 8 audit system must take appropriate action when the audit storage volume is full.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is critical that when RHEL 8 is at risk of failing to process audit logs as required, it takes action to mitigate the failure. Audit processing failures include software/hardware errors; failures in the audit capturing mechanisms; and audit storage capacity being reached or exceeded. Responses to audit failure depend upon the nature of the failure mode.

When availability is an overriding concern, other approved actions in response to an audit failure are as follows: 

1) If the failure was caused by the lack of audit record storage capacity, RHEL 8 must continue generating audit records if possible (automatically restarting the audit service if necessary) and overwriting the oldest audit records in a first-in-first-out manner.

2) If audit records are sent to a centralized collection server and communication with this server is lost or the server fails, RHEL 8 must queue audit records locally until communication is restored or until the audit records are retrieved manually. Upon restoration of the connection to the centralized collection server, action should be taken to synchronize the local audit data with the collection server.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000140</xccdf:ident>
          <xccdf:fixtext fixref="F-33036r567923_fix">Configure RHEL 8 to shut down by default upon audit failure (unless availability is an overriding concern).

Add or update the following line (depending on configuration "disk_full_action" can be set to "SYSLOG" or "SINGLE" depending on configuration) in "/etc/audit/auditd.conf" file:

disk_full_action = HALT

If availability has been determined to be more important, and this decision is documented with the ISSO, configure the operating system to notify system administration staff and ISSO staff in the event of an audit processing failure by setting the "disk_full_action" to "SYSLOG".</xccdf:fixtext>
          <xccdf:fix id="F-33036r567923_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230392" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230393">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230393r1017200_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030061</xccdf:version>
          <xccdf:title>The RHEL 8 audit system must audit local events.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33037r567926_fix">Configure RHEL 8 to audit local events on the system.

Add or update the following line in "/etc/audit/auditd.conf" file:

local_events = yes</xccdf:fixtext>
          <xccdf:fix id="F-33037r567926_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230393" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230394">
        <xccdf:title>SRG-OS-000342-GPOS-00133</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230394r958754_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030062</xccdf:version>
          <xccdf:title>RHEL 8 must label all off-loaded audit logs before sending them to the central log server.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.

Enriched logging is needed to determine who, what, and when events occur on a system.  Without this, determining root cause of an event will be much more difficult.

When audit logs are not labeled before they are sent to a central log server, the audit data will not be able to be analyzed and tied back to the correct system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001851</xccdf:ident>
          <xccdf:fixtext fixref="F-33038r567929_fix">Edit the /etc/audit/auditd.conf file and add or update the "name_format" option:

name_format = hostname

The audit daemon must be restarted for changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33038r567929_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230394" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230395">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230395r1017201_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-030063</xccdf:version>
          <xccdf:title>RHEL 8 must resolve audit information before writing to disk.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.

Enriched logging aids in making sense of who, what, and when events occur on a system.  Without this, determining root cause of an event will be much more difficult.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33039r567932_fix">Edit the /etc/audit/auditd.conf file and add or update the "log_format" option:

log_format = ENRICHED

The audit daemon must be restarted for changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33039r567932_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230395" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230396">
        <xccdf:title>SRG-OS-000057-GPOS-00027</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230396r1017202_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030070</xccdf:version>
          <xccdf:title>RHEL 8 audit logs must have a mode of 0600 or less permissive to prevent unauthorized read access.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029, SRG-OS-000206-GPOS-00084&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000162</xccdf:ident>
          <xccdf:fixtext fixref="F-33040r902732_fix">Configure the audit log to be protected from unauthorized read access by setting the correct permissive mode with the following command: 
 
$ sudo chmod 0600 /var/log/audit/audit.log</xccdf:fixtext>
          <xccdf:fix id="F-33040r902732_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230396" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230397">
        <xccdf:title>SRG-OS-000057-GPOS-00027</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230397r1017203_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030080</xccdf:version>
          <xccdf:title>RHEL 8 audit logs must be owned by root to prevent unauthorized read access.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029, SRG-OS-000206-GPOS-00084&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000162</xccdf:ident>
          <xccdf:fixtext fixref="F-33041r567938_fix">Configure the audit log to be protected from unauthorized read access, by setting the correct owner as "root" with the following command:

$ sudo chown root [audit_log_file]

Replace "[audit_log_file]" to the correct audit log path, by default this location is "/var/log/audit/audit.log".</xccdf:fixtext>
          <xccdf:fix id="F-33041r567938_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230397" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230398">
        <xccdf:title>SRG-OS-000057-GPOS-00027</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230398r1017204_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030090</xccdf:version>
          <xccdf:title>RHEL 8 audit logs must be group-owned by root to prevent unauthorized read access.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 activity.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000162</xccdf:ident>
          <xccdf:fixtext fixref="F-33042r567941_fix">Configure the audit log to be owned by root by configuring the log group in the /etc/audit/auditd.conf file:

log_group = root</xccdf:fixtext>
          <xccdf:fix id="F-33042r567941_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230398" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230399">
        <xccdf:title>SRG-OS-000057-GPOS-00027</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230399r1017205_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030100</xccdf:version>
          <xccdf:title>RHEL 8 audit log directory must be owned by root to prevent unauthorized read access.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 activity.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000162</xccdf:ident>
          <xccdf:fixtext fixref="F-33043r567944_fix">Configure the audit log to be protected from unauthorized read access, by setting the correct owner as "root" with the following command:

$ sudo chown root [audit_log_directory]

Replace "[audit_log_directory]" with the correct audit log directory path, by default this location is usually "/var/log/audit".</xccdf:fixtext>
          <xccdf:fix id="F-33043r567944_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230399" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230400">
        <xccdf:title>SRG-OS-000057-GPOS-00027</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230400r1017206_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030110</xccdf:version>
          <xccdf:title>RHEL 8 audit log directory must be group-owned by root to prevent unauthorized read access.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 activity.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000162</xccdf:ident>
          <xccdf:fixtext fixref="F-33044r567947_fix">Configure the audit log to be protected from unauthorized read access by setting the correct group-owner as "root" with the following command:

$ sudo chgrp root [audit_log_directory]

Replace "[audit_log_directory]" with the correct audit log directory path, by default this location is usually "/var/log/audit".</xccdf:fixtext>
          <xccdf:fix id="F-33044r567947_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230400" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230401">
        <xccdf:title>SRG-OS-000057-GPOS-00027</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230401r1017207_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030120</xccdf:version>
          <xccdf:title>RHEL 8 audit log directory must have a mode of 0700 or less permissive to prevent unauthorized read access.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 system activity.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000162</xccdf:ident>
          <xccdf:fixtext fixref="F-33045r567950_fix">Configure the audit log directory to be protected from unauthorized read access by setting the correct permissive mode with the following command:

$ sudo chmod 0700 [audit_log_directory]

Replace "[audit_log_directory]" to the correct audit log directory path, by default this location is "/var/log/audit".</xccdf:fixtext>
          <xccdf:fix id="F-33045r567950_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230401" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230402">
        <xccdf:title>SRG-OS-000057-GPOS-00027</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230402r1017208_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030121</xccdf:version>
          <xccdf:title>RHEL 8 audit system must protect auditing rules from unauthorized change.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 system activity.

In immutable mode, unauthorized users cannot execute changes to the audit system to potentially hide malicious activity and then put the audit rules back.  A system reboot would be noticeable and a system administrator could then investigate the unauthorized changes.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000162</xccdf:ident>
          <xccdf:fixtext fixref="F-33046r567953_fix">Configure the audit system to set the audit rules to be immutable by adding the following line to "/etc/audit/rules.d/audit.rules"

-e 2

Note: Once set, the system must be rebooted for auditing to be changed.  It is recommended to add this option as the last step in securing the system.</xccdf:fixtext>
          <xccdf:fix id="F-33046r567953_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230402" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230403">
        <xccdf:title>SRG-OS-000057-GPOS-00027</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230403r1017209_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030122</xccdf:version>
          <xccdf:title>RHEL 8 audit system must protect logon UIDs from unauthorized change.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 system activity.

In immutable mode, unauthorized users cannot execute changes to the audit system to potentially hide malicious activity and then put the audit rules back.  A system reboot would be noticeable and a system administrator could then investigate the unauthorized changes.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000162</xccdf:ident>
          <xccdf:fixtext fixref="F-33047r567956_fix">Configure the audit system to set the logon UIDs to be immutable by adding the following line to "/etc/audit/rules.d/audit.rules"

--loginuid-immutable</xccdf:fixtext>
          <xccdf:fix id="F-33047r567956_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230403" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230404">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230404r1017210_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030130</xccdf:version>
          <xccdf:title>RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33048r567959_fix">Configure RHEL 8 to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/shadow".

Add or update the following file system rule to "/etc/audit/rules.d/audit.rules":

-w /etc/shadow -p wa -k identity

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33048r567959_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230404" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230405">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230405r1017211_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030140</xccdf:version>
          <xccdf:title>RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/security/opasswd.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, SRG-OS-000476-GPOS-00221&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33049r567962_fix">Configure RHEL 8 to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/security/opasswd".

Add or update the following file system rule to "/etc/audit/rules.d/audit.rules":

-w /etc/security/opasswd -p wa -k identity

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33049r567962_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230405" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230406">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230406r1017212_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030150</xccdf:version>
          <xccdf:title>RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/passwd.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33050r567965_fix">Configure RHEL 8 to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/passwd".

Add or update the following file system rule to "/etc/audit/rules.d/audit.rules":

-w /etc/passwd -p wa -k identity

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33050r567965_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230406" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230407">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230407r1017213_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030160</xccdf:version>
          <xccdf:title>RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/gshadow.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33051r567968_fix">Configure RHEL 8 to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/gshadow".

Add or update the following file system rule to "/etc/audit/rules.d/audit.rules":

-w /etc/gshadow -p wa -k identity

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33051r567968_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230407" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230408">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230408r1017214_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030170</xccdf:version>
          <xccdf:title>RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/group.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, CCI-002884, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33052r567971_fix">Configure RHEL 8 to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/group".

Add or update the following file system rule to "/etc/audit/rules.d/audit.rules":

-w /etc/group -p wa -k identity

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33052r567971_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230408" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230409">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230409r1017215_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030171</xccdf:version>
          <xccdf:title>RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/sudoers.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, CCI-002884, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33053r567974_fix">Configure RHEL 8 to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/sudoers".

Add or update the following file system rule to "/etc/audit/rules.d/audit.rules":

-w /etc/sudoers -p wa -k identity

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33053r567974_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230409" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230410">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230410r1017216_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030172</xccdf:version>
          <xccdf:title>RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/sudoers.d/.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, CCI-002884, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33054r567977_fix">Configure RHEL 8 to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/sudoers.d/".

Add or update the following file system rule to "/etc/audit/rules.d/audit.rules":

-w /etc/sudoers.d/ -p wa -k identity

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33054r567977_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230410" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230411">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230411r1017217_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030180</xccdf:version>
          <xccdf:title>The RHEL 8 audit package must be installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.

Associating event types with detected events in RHEL 8 audit logs provides a means of investigating an attack, recognizing resource utilization or capacity thresholds, or identifying an improperly configured RHEL 8 system.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000038-GPOS-00016, SRG-OS-000039-GPOS-00017, SRG-OS-000040-GPOS-00018, SRG-OS-000041-GPOS-00019, SRG-OS-000042-GPOS-00021, SRG-OS-000051-GPOS-00024, SRG-OS-000054-GPOS-00025, SRG-OS-000122-GPOS-00063, SRG-OS-000254-GPOS-00095, SRG-OS-000255-GPOS-00096, SRG-OS-000337-GPOS-00129, SRG-OS-000348-GPOS-00136, SRG-OS-000349-GPOS-00137, SRG-OS-000350-GPOS-00138, SRG-OS-000351-GPOS-00139, SRG-OS-000352-GPOS-00140, SRG-OS-000353-GPOS-00141, SRG-OS-000354-GPOS-00142, SRG-OS-000358-GPOS-00145, SRG-OS-000365-GPOS-00152, SRG-OS-000392-GPOS-00172, SRG-OS-000475-GPOS-00220&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33055r646880_fix">Configure the audit service to produce audit records containing the information needed to establish when (date and time) an event occurred.

Install the audit service (if the audit service is not already installed) with the following command:

$ sudo yum install audit</xccdf:fixtext>
          <xccdf:fix id="F-33055r646880_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230411" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230412">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230412r1017218_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030190</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the su command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "su" command allows a user to run commands with a substitute user and group ID.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000064-GPOS-0003, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000466-GPOS-00210&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33056r567983_fix">Configure RHEL 8 to generate audit records when successful/unsuccessful attempts to use the "su" command occur by adding or updating the following rule in "/etc/audit/rules.d/audit.rules":

-a always,exit -F path=/usr/bin/su -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-priv_change

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33056r567983_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230412" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230413">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230413r1017219_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030200</xccdf:version>
          <xccdf:title>The RHEL 8 audit system must be configured to audit any usage of the setxattr, fsetxattr, lsetxattr, removexattr, fremovexattr, and lremovexattr system calls.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). 

"Setxattr" is a system call used to set an extended attribute value.
"Fsetxattr" is a system call used to set an extended attribute value. This is used to set extended attributes on a file.
"Lsetxattr" is a system call used to set an extended attribute value. This is used to set extended attributes on a symbolic link.
"Removexattr" is a system call that removes extended attributes.
"Fremovexattr" is a system call that removes extended attributes. This is used for removal of extended attributes from a file.
"Lremovexattr" is a system call that removes extended attributes. This is used for removal of extended attributes from symbolic links.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. The performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000458-GPOS-00203, SRG-OS-000462-GPOS-00206, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212, SRG-OS-000471-GPOS-00215, SRG-OS-000474-GPOS-00219, SRG-OS-000466-GPOS-00210&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33057r809294_fix">Configure RHEL 8 to audit the execution of the "setxattr", "fsetxattr", "lsetxattr", "removexattr", "fremovexattr", and "lremovexattr" system calls by adding or updating the following lines to "/etc/audit/rules.d/audit.rules":

-a always,exit -F arch=b32 -S setxattr,fsetxattr,lsetxattr,removexattr,fremovexattr,lremovexattr -F auid&gt;=1000 -F auid!=unset -k perm_mod
-a always,exit -F arch=b64 -S setxattr,fsetxattr,lsetxattr,removexattr,fremovexattr,lremovexattr -F auid&gt;=1000 -F auid!=unset -k perm_mod

-a always,exit -F arch=b32 -S setxattr,fsetxattr,lsetxattr,removexattr,fremovexattr,lremovexattr -F auid=0 -k perm_mod
-a always,exit -F arch=b64 -S setxattr,fsetxattr,lsetxattr,removexattr,fremovexattr,lremovexattr -F auid=0 -k perm_mod

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33057r809294_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230413" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230418">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230418r1017220_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030250</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the chage command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chage" command is used to change or view user password expiry information.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000468-GPOS-00212, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33062r568001_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "chage" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/chage -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-chage

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33062r568001_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230418" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230419">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230419r1017221_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030260</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the chcon command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chcon" command is used to change file SELinux security context.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000468-GPOS-00212, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33063r568004_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "chcon" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/chcon -F perm=x -F auid&gt;=1000 -F auid!=unset -k perm_mod

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33063r568004_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230419" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230421">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230421r1017222_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030280</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the ssh-agent in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "ssh-agent" is a program to hold private keys used for public key authentication.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33065r568010_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "ssh-agent" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/ssh-agent -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-ssh

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33065r568010_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230421" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230422">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230422r1017223_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030290</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the passwd command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "passwd" command is used to change passwords for user accounts.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33066r568013_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "passwd" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/passwd -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-passwd

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33066r568013_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230422" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230423">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230423r1017224_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030300</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the mount command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "mount" command is used to mount a filesystem.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33067r568016_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "mount" command by adding or updating the following rules in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/mount -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-mount

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33067r568016_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230423" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230424">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230424r1017225_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030301</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the umount command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "umount" command is used to unmount a filesystem.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33068r568019_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "umount" command by adding or updating the following rules in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/umount -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-mount

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33068r568019_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230424" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230425">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230425r1017226_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030302</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the mount syscall in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "mount" syscall is used to mount a filesystem.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33069r568022_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "mount" syscall by adding or updating the following rules in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F arch=b32 -S mount -F auid&gt;=1000 -F auid!=unset -k privileged-mount
-a always,exit -F arch=b64 -S mount -F auid&gt;=1000 -F auid!=unset -k privileged-mount

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33069r568022_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230425" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230426">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230426r1017227_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030310</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the unix_update in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. "Unix_update" is a helper program for the "pam_unix" module that updates the password for a given user. It is not intended to be run directly from the command line and logs a security violation if done so.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33070r568025_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "unix_update" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/unix_update -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33070r568025_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230426" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230427">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230427r1017228_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030311</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of postdrop in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "postdrop" command creates a file in the maildrop directory and copies its standard input to the file.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33071r568028_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "postdrop" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/postdrop -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33071r568028_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230427" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230428">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230428r1017229_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030312</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of postqueue in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "postqueue" command implements the Postfix user interface for queue management.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33072r568031_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "postqueue" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/postqueue -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33072r568031_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230428" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230429">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230429r1017230_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030313</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of semanage in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "semanage" command is used to configure certain elements of SELinux policy without requiring modification to or recompilation from policy sources.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33073r568034_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "semanage" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/semanage -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33073r568034_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230429" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230430">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230430r1017231_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030314</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of setfiles in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "setfiles" command is primarily used to initialize the security context fields (extended attributes) on one or more filesystems (or parts of them).  Usually it is initially run as part of the SELinux installation process (a step commonly known as labeling).

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33074r568037_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "setfiles" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/setfiles -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33074r568037_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230430" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230431">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230431r1017232_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030315</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of userhelper in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "userhelper" command is not intended to be run interactively.  "Userhelper" provides a basic interface to change a user's password, gecos information, and shell.  The main difference between this program and its traditional equivalents (passwd, chfn, chsh) is that prompts are written to standard out to make it easy for a graphical user interface wrapper to interface to it as a child process.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33075r568040_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "userhelper" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/userhelper -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33075r568040_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230431" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230432">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230432r1017233_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030316</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of setsebool in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "setsebool" command sets the current state of a particular SELinux boolean or a list of booleans to a given value.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33076r568043_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "setsebool" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/setsebool -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33076r568043_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230432" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230433">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230433r1017234_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030317</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of unix_chkpwd in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "unix_chkpwd" command is a helper program for the pam_unix module that verifies the password of the current user.  It also checks password and account expiration dates in shadow.  It is not intended to be run directly from the command line and logs a security violation if done so.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33077r568046_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "unix_chkpwd" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/unix_chkpwd -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33077r568046_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230433" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230434">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230434r1017235_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030320</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the ssh-keysign in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "ssh-keysign" program is an SSH helper program for host-based authentication.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33078r744001_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "ssh-keysign" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/libexec/openssh/ssh-keysign -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-ssh

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33078r744001_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230434" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230435">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230435r1017236_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030330</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the setfacl command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "setfacl" command is used to set file access control lists.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33079r568052_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "setfacl" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/setfacl -F perm=x -F auid&gt;=1000 -F auid!=unset -k perm_mod

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33079r568052_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230435" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230436">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230436r1017237_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030340</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the pam_timestamp_check command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "pam_timestamp_check" command is used to check if the default timestamp is valid.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33080r568055_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "pam_timestamp_check" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/pam_timestamp_check -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-pam_timestamp_check

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33080r568055_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230436" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230437">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230437r1017238_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030350</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the newgrp command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "newgrp" command is used to change the current group ID during a login session.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33081r568058_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "newgrp" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/newgrp -F perm=x -F auid&gt;=1000 -F auid!=unset -k priv_cmd

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33081r568058_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230437" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230438">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230438r1017241_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030360</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the init_module and finit_module system calls in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "init_module" and "finit_module" system calls are used to load a kernel module.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. The performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33082r1017240_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "init_module" and "finit_module" system calls by adding or updating the following rules in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F arch=b32 -S init_module,finit_module -F auid&gt;=1000 -F auid!=unset -k module_chng
-a always,exit -F arch=b64 -S init_module,finit_module -F auid&gt;=1000 -F auid!=unset -k module_chng

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33082r1017240_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230438" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230439">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230439r1017243_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030361</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the rename, unlink, rmdir, renameat, and unlinkat system calls in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "rename" system call will rename the specified files by replacing the first occurrence of expression in their name by replacement.

The "unlink" system call deletes a name from the filesystem. If that name was the last link to a file and no processes have the file open, the file is deleted and the space it was using is made available for reuse.
The "rmdir" system call removes empty directories.
The "renameat" system call renames a file, moving it between directories if required.
The "unlinkat" system call operates in exactly the same way as either "unlink" or "rmdir" except for the differences described in the manual page.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. Performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33083r809301_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "rename", "unlink", "rmdir", "renameat", and "unlinkat" system calls by adding or updating the following rules in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F arch=b32 -S rename,unlink,rmdir,renameat,unlinkat -F auid&gt;=1000 -F auid!=unset -k delete
-a always,exit -F arch=b64 -S rename,unlink,rmdir,renameat,unlinkat -F auid&gt;=1000 -F auid!=unset -k delete

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33083r809301_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230439" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230444">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230444r1017244_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030370</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the gpasswd command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "gpasswd" command is used to administer /etc/group and /etc/gshadow. Every group can have administrators, members and a password.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33088r568079_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "gpasswd" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/gpasswd -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-gpasswd

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33088r568079_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230444" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230446">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230446r1017245_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030390</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the delete_module command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "delete_module" command is used to unload a kernel module.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33090r568085_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "delete_module" command by adding or updating the following rules in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F arch=b32 -S delete_module -F auid&gt;=1000 -F auid!=unset -k module_chng
-a always,exit -F arch=b64 -S delete_module -F auid&gt;=1000 -F auid!=unset -k module_chng

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33090r568085_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230446" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230447">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230447r1017246_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030400</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the crontab command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "crontab" command is used to maintain crontab files for individual users. Crontab is the program used to install, remove, or list the tables used to drive the cron daemon. This is similar to the task scheduler used in other operating systems.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33091r568088_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "crontab" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/crontab -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-crontab

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33091r568088_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230447" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230448">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230448r1017247_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030410</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the chsh command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chsh" command is used to change the login shell.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33092r568091_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "chsh" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/chsh -F perm=x -F auid&gt;=1000 -F auid!=unset -k priv_cmd

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33092r568091_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230448" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230449">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230449r1017249_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030420</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the truncate, ftruncate, creat, open, openat, and open_by_handle_at system calls in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "truncate" and "ftruncate" functions are used to truncate a file to a specified length. 

The "creat" system call is used to open and possibly create a file or device.
The "open" system call opens a file specified by a pathname. If the specified file does not exist, it may optionally be created by "open".
The "openat" system call opens a file specified by a relative pathname.
The "name_to_handle_at" and "open_by_handle_at" system calls split the functionality of "openat" into two parts: "name_to_handle_at" returns an opaque handle that corresponds to a specified file; "open_by_handle_at" opens the file corresponding to a handle returned by a previous call to "name_to_handle_at" and returns an open file descriptor.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. The performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000064-GPOS-00033&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33093r809304_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "truncate", "ftruncate", "creat", "open", "openat", and "open_by_handle_at" system calls by adding or updating the following rules in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F arch=b32 -S truncate,ftruncate,creat,open,openat,open_by_handle_at -F exit=-EPERM -F auid&gt;=1000 -F auid!=unset -k perm_access
-a always,exit -F arch=b64 -S truncate,ftruncate,creat,open,openat,open_by_handle_at -F exit=-EPERM -F auid&gt;=1000 -F auid!=unset -k perm_access

-a always,exit -F arch=b32 -S truncate,ftruncate,creat,open,openat,open_by_handle_at -F exit=-EACCES -F auid&gt;=1000 -F auid!=unset -k perm_access
-a always,exit -F arch=b64 -S truncate,ftruncate,creat,open,openat,open_by_handle_at -F exit=-EACCES -F auid&gt;=1000 -F auid!=unset -k perm_access

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33093r809304_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230449" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230455">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230455r1017251_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030480</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the chown, fchown, fchownat, and lchown system calls in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chown" command is used to change file owner and group.

The "fchown" system call is used to change the ownership of a file referred to by the open file descriptor.
The "fchownat" system call is used to change ownership of a file relative to a directory file descriptor.
The "lchown" system call is used to change the ownership of the file specified by a path, which does not dereference symbolic links.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. The performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000064-GPOS-00033, SRG-OS-000466-GPOS-00210&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33099r809307_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "chown", "fchown", "fchownat", and "lchown" system calls by adding or updating the following line to "/etc/audit/rules.d/audit.rules":

-a always,exit -F arch=b32 -S chown,fchown,fchownat,lchown -F auid&gt;=1000 -F auid!=unset -k perm_mod
-a always,exit -F arch=b64 -S chown,fchown,fchownat,lchown -F auid&gt;=1000 -F auid!=unset -k perm_mod

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33099r809307_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230455" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230456">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230456r1017253_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030490</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the chmod, fchmod, and fchmodat system calls in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chmod" system call changes the file mode bits of each given file according to mode, which can be either a symbolic representation of changes to make, or an octal number representing the bit pattern for the new mode bits.

The "fchmod" system call is used to change permissions of a file.
The "fchmodat" system call is used to change permissions of a file relative to a directory file descriptor.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. Performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000064-GPOS-00033, SRG-OS-000466-GPOS-00210&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33100r809310_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "chmod", "fchmod", and "fchmodat" syscalls by adding or updating the following line to "/etc/audit/rules.d/audit.rules": 

-a always,exit -F arch=b32 -S chmod,fchmod,fchmodat -F auid&gt;=1000 -F auid!=unset -k perm_mod
-a always,exit -F arch=b64 -S chmod,fchmod,fchmodat -F auid&gt;=1000 -F auid!=unset -k perm_mod

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33100r809310_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230456" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230462">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230462r1017254_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030550</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the sudo command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "sudo" command allows a permitted user to execute a command as the superuser or another user, as specified by the security policy.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000466-GPOS-00210&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33106r568133_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "sudo" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/sudo -F perm=x -F auid&gt;=1000 -F auid!=unset -k priv_cmd

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33106r568133_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230462" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230463">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230463r1017255_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030560</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the usermod command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "usermod" command modifies the system account files to reflect the changes that are specified on the command line.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000466-GPOS-00210&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33107r568136_fix">Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "usermod" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/usermod -F perm=x -F auid&gt;=1000 -F auid!=unset -k privileged-usermod

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33107r568136_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230463" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230464">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230464r1017256_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030570</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the chacl command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chacl" command is used to change the access control list of a file or directory.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000466-GPOS-00210&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33108r568139_fix">Configure the audit system to generate an audit event for any successful/unsuccessful use of the "chacl" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/chacl -F perm=x -F auid&gt;=1000 -F auid!=unset -k perm_mod

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33108r568139_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230464" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230465">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230465r1017257_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030580</xccdf:version>
          <xccdf:title>Successful/unsuccessful uses of the kmod command in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "kmod" command is used to control Linux Kernel modules.

The list of audited events is the set of events for which audits are to be generated. This set of events is typically a subset of the list of all events for which the system is capable of generating audit records.

DoD has defined the list of events for which RHEL 8 will provide an audit record generation capability as the following:

1) Successful and unsuccessful attempts to access, modify, or delete privileges, security objects, security levels, or categories of information (e.g., classification levels);

2) Access actions, such as successful and unsuccessful logon attempts, privileged activities or other system-level access, starting and ending time for user access to the system, concurrent logons from different workstations, successful and unsuccessful accesses to objects, all program initiations, and all direct access to the information system;

3) All account creations, modifications, disabling, and terminations; and 

4) All kernel module load, unload, and restart actions.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000471-GPOS-00216, SRG-OS-000477-GPOS-00222&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33109r568142_fix">Configure RHEL 8 to audit the execution of the module management program "kmod" by adding or updating the following line to "/etc/audit/rules.d/audit.rules":

-a always,exit -F path=/usr/bin/kmod -F perm=x -F auid&gt;=1000 -F auid!=unset -k modules

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33109r568142_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230465" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230467">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230467r1017259_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030600</xccdf:version>
          <xccdf:title>Successful/unsuccessful modifications to the lastlog file in RHEL 8 must generate an audit record.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

The list of audited events is the set of events for which audits are to be generated. This set of events is typically a subset of the list of all events for which the system is capable of generating audit records.

DoD has defined the list of events for which RHEL 8 will provide an audit record generation capability as the following:

1) Successful and unsuccessful attempts to access, modify, or delete privileges, security objects, security levels, or categories of information (e.g., classification levels);

2) Access actions, such as successful and unsuccessful logon attempts, privileged activities or other system-level access, starting and ending time for user access to the system, concurrent logons from different workstations, successful and unsuccessful accesses to objects, all program initiations, and all direct access to the information system;

3) All account creations, modifications, disabling, and terminations; and 

4) All kernel module load, unload, and restart actions.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000473-GPOS-00218&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33111r568148_fix">Configure the audit system to generate an audit event for any successful/unsuccessful modifications to the "lastlog" file by adding or updating the following rules in the "/etc/audit/rules.d/audit.rules" file:

-w /var/log/lastlog -p wa -k logins

The audit daemon must be restarted for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33111r568148_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230467" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230468">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230468r1017260_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-030601</xccdf:version>
          <xccdf:title>RHEL 8 must enable auditing of processes that start prior to the audit daemon.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

If auditing is enabled late in the startup process, the actions of some startup processes may not be audited. Some audit systems also maintain state information only available if auditing is enabled before a given process is created.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

The list of audited events is the set of events for which audits are to be generated. This set of events is typically a subset of the list of all events for which the system is capable of generating audit records.

DoD has defined the list of events for which RHEL 8 will provide an audit record generation capability as the following:

1) Successful and unsuccessful attempts to access, modify, or delete privileges, security objects, security levels, or categories of information (e.g., classification levels);

2) Access actions, such as successful and unsuccessful logon attempts, privileged activities or other system-level access, starting and ending time for user access to the system, concurrent logons from different workstations, successful and unsuccessful accesses to objects, all program initiations, and all direct access to the information system;

3) All account creations, modifications, disabling, and terminations; and 

4) All kernel module load, unload, and restart actions.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000473-GPOS-00218&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-33112r568151_fix">Configure RHEL 8 to audit processes that start prior to the audit daemon with the following command:

$ sudo grubby --update-kernel=ALL --args="audit=1"

Add or modify the following line in "/etc/default/grub" to ensure the configuration survives kernel updates:

GRUB_CMDLINE_LINUX="audit=1"</xccdf:fixtext>
          <xccdf:fix id="F-33112r568151_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230468" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230469">
        <xccdf:title>SRG-OS-000341-GPOS-00132</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230469r958752_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-030602</xccdf:version>
          <xccdf:title>RHEL 8 must allocate an audit_backlog_limit of sufficient size to capture processes that start prior to the audit daemon.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

If auditing is enabled late in the startup process, the actions of some startup processes may not be audited. Some audit systems also maintain state information only available if auditing is enabled before a given process is created.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Allocating an audit_backlog_limit of sufficient size is critical in maintaining a stable boot process.  With an insufficient limit allocated, the system is susceptible to boot failures and crashes.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001849</xccdf:ident>
          <xccdf:fixtext fixref="F-33113r568154_fix">Configure RHEL 8 to allocate sufficient audit_backlog_limit to capture processes that start prior to the audit daemon with the following command:

$ sudo grubby --update-kernel=ALL --args="audit_backlog_limit=8192"

Add or modify the following line in "/etc/default/grub" to ensure the configuration survives kernel updates:

GRUB_CMDLINE_LINUX="audit_backlog_limit=8192"</xccdf:fixtext>
          <xccdf:fix id="F-33113r568154_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230469" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230471">
        <xccdf:title>SRG-OS-000063-GPOS-00032</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230471r1017262_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030610</xccdf:version>
          <xccdf:title>RHEL 8 must allow only the Information System Security Manager (ISSM) (or individuals or roles appointed by the ISSM) to select which auditable events are to be audited.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without the capability to restrict the roles and individuals that can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming the audit log. Misconfigured audits may also make it more difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000171</xccdf:ident>
          <xccdf:fixtext fixref="F-33115r568160_fix">Configure the files in directory "/etc/audit/rules.d/" and the "/etc/audit/auditd.conf" file to have a mode of "0640" with the following commands:

$ sudo chmod 0640 /etc/audit/rules.d/audit.rules
$ sudo chmod 0640 /etc/audit/rules.d/[customrulesfile].rules
$ sudo chmod 0640 /etc/audit/auditd.conf</xccdf:fixtext>
          <xccdf:fix id="F-33115r568160_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230471" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230472">
        <xccdf:title>SRG-OS-000256-GPOS-00097</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230472r1017263_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030620</xccdf:version>
          <xccdf:title>RHEL 8 audit tools must have a mode of 0755 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information.

RHEL 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user enjoys, to make access decisions regarding the access to audit tools.

Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001493</xccdf:ident>
          <xccdf:fixtext fixref="F-33116r568163_fix">Configure the audit tools to be protected from unauthorized access by setting the correct permissive mode using the following command:

$ sudo chmod 0755 [audit_tool]

Replace "[audit_tool]" with the audit tool that does not have the correct permissive mode.</xccdf:fixtext>
          <xccdf:fix id="F-33116r568163_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230472" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230473">
        <xccdf:title>SRG-OS-000256-GPOS-00097</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230473r1017264_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030630</xccdf:version>
          <xccdf:title>RHEL 8 audit tools must be owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information.

RHEL 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user enjoys, to make access decisions regarding the access to audit tools.

Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.

Satisfies: SRG-OS-000256-GPOS-00097, SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001493</xccdf:ident>
          <xccdf:fixtext fixref="F-33117r568166_fix">Configure the audit tools to be owned by "root", by running the following command:

$ sudo chown root [audit_tool]

Replace "[audit_tool]" with each audit tool not owned by "root".</xccdf:fixtext>
          <xccdf:fix id="F-33117r568166_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230473" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230474">
        <xccdf:title>SRG-OS-000256-GPOS-00097</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230474r1017265_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030640</xccdf:version>
          <xccdf:title>RHEL 8 audit tools must be group-owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information.

RHEL 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user enjoys, to make access decisions regarding the access to audit tools.

Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.

Satisfies: SRG-OS-000256-GPOS-00097, SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001493</xccdf:ident>
          <xccdf:fixtext fixref="F-33118r568169_fix">Configure the audit tools to be group-owned by "root", by running the following command:

$ sudo chgrp root [audit_tool]

Replace "[audit_tool]" with each audit tool not group-owned by "root".</xccdf:fixtext>
          <xccdf:fix id="F-33118r568169_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230474" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230477">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230477r1017267_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030670</xccdf:version>
          <xccdf:title>RHEL 8 must have the packages required for offloading audit logs installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration.

Off-loading is a common process in information systems with limited audit storage capacity.

RHEL 8 installation media provides "rsyslogd".  "rsyslogd" is a system utility providing support for message logging.  Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging.  Couple this utility with "gnutls" (which is a secure communications library implementing the SSL, TLS and DTLS protocols), and you have a method to securely encrypt and off-load auditing.

Rsyslog provides three ways to forward message: the traditional UDP transport, which is extremely lossy but standard; the plain TCP based transport, which loses messages only during certain situations but is widely available; and the RELP transport, which does not lose messages but is currently available only as part of the rsyslogd 3.15.0 and above.
Examples of each configuration:
UDP *.* @remotesystemname
TCP *.* @@remotesystemname
RELP *.* :omrelp:remotesystemname:2514
Note that a port number was given as there is no standard port for RELP.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33121r568178_fix">Configure the operating system to offload audit logs by installing the required packages with the following command:

$ sudo yum install rsyslog</xccdf:fixtext>
          <xccdf:fix id="F-33121r568178_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230477" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230478">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230478r1017268_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030680</xccdf:version>
          <xccdf:title>RHEL 8 must have the packages required for encrypting offloaded audit logs installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration.

Off-loading is a common process in information systems with limited audit storage capacity.

RHEL 8 installation media provides "rsyslogd".  "rsyslogd" is a system utility providing support for message logging.  Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging.  Couple this utility with "rsyslog-gnutls" (which is a secure communications library implementing the SSL, TLS and DTLS protocols), and you have a method to securely encrypt and off-load auditing.

Rsyslog provides three ways to forward message: the traditional UDP transport, which is extremely lossy but standard; the plain TCP based transport, which loses messages only during certain situations but is widely available; and the RELP transport, which does not lose messages but is currently available only as part of the rsyslogd 3.15.0 and above.
Examples of each configuration:
UDP *.* @remotesystemname
TCP *.* @@remotesystemname
RELP *.* :omrelp:remotesystemname:2514
Note that a port number was given as there is no standard port for RELP.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33122r744010_fix">Configure the operating system to encrypt offloaded audit logs by installing the required packages with the following command:

$ sudo yum install rsyslog-gnutls</xccdf:fixtext>
          <xccdf:fix id="F-33122r744010_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230478" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230480">
        <xccdf:title>SRG-OS-000342-GPOS-00133</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230480r958754_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030700</xccdf:version>
          <xccdf:title>RHEL 8 must take appropriate action when the internal event queue is full.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration.

Off-loading is a common process in information systems with limited audit storage capacity.

RHEL 8 installation media provides "rsyslogd".  "rsyslogd" is a system utility providing support for message logging.  Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging.  Couple this utility with "gnutls" (which is a secure communications library implementing the SSL, TLS and DTLS protocols), and you have a method to securely encrypt and off-load auditing.

Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001851</xccdf:ident>
          <xccdf:fixtext fixref="F-33124r568187_fix">Edit the /etc/audit/auditd.conf file and add or update the "overflow_action" option:

overflow_action = syslog

The audit daemon must be restarted for changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33124r568187_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230480" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230482">
        <xccdf:title>SRG-OS-000342-GPOS-00133</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230482r958754_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030720</xccdf:version>
          <xccdf:title>RHEL 8 must authenticate the remote logging server for off-loading audit logs.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration.

Off-loading is a common process in information systems with limited audit storage capacity.

RHEL 8 installation media provides "rsyslogd".  "rsyslogd" is a system utility providing support for message logging.  Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging.  Couple this utility with "gnutls" (which is a secure communications library implementing the SSL, TLS and DTLS protocols), and you have a method to securely encrypt and off-load auditing.

"Rsyslog" supported authentication modes include:
anon - anonymous authentication
x509/fingerprint - certificate fingerprint authentication
x509/certvalid - certificate validation only
x509/name - certificate validation and subject name authentication.

Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001851</xccdf:ident>
          <xccdf:fixtext fixref="F-33126r568193_fix">Configure the operating system to authenticate the remote logging server for off-loading audit logs by setting the following option in "/etc/rsyslog.conf" or "/etc/rsyslog.d/[customfile].conf":

$ActionSendStreamDriverAuthMode x509/name</xccdf:fixtext>
          <xccdf:fix id="F-33126r568193_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230482" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230483">
        <xccdf:title>SRG-OS-000343-GPOS-00134</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230483r971542_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030730</xccdf:version>
          <xccdf:title>RHEL 8 must take action when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If security personnel are not notified immediately when storage volume reaches 75 percent utilization, they are unable to plan for audit record storage capacity expansion.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001855</xccdf:ident>
          <xccdf:fixtext fixref="F-33127r744013_fix">Configure the operating system to initiate an action to notify the SA and ISSO (at a minimum) when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity by adding/modifying the following line in the /etc/audit/auditd.conf file.

space_left = 25%

Note: Option names and values in the auditd.conf file are case insensitive.</xccdf:fixtext>
          <xccdf:fix id="F-33127r744013_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230483" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230485">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230485r1017269_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-030741</xccdf:version>
          <xccdf:title>RHEL 8 must disable the chrony daemon from acting as a server.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Sources outside the configured acceptable allowance (drift) may be inaccurate.

Minimizing the exposure of the server functionality of the chrony daemon diminishes the attack surface.

RHEL 8 utilizes the "timedatectl" command to view the status of the "systemd-timesyncd.service". The "timedatectl" status will display the local time, UTC, and the offset from UTC.

Note that USNO offers authenticated NTP service to DOD and U.S. Government agencies operating on the NIPR and SIPR networks. Visit https://www.usno.navy.mil/USNO/time/ntp/DOD-customers for more information.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33129r1014805_fix">Configure the operating system to disable the chrony daemon from acting as a server by adding or modifying the following line in the "/etc/chrony.conf" file:

port 0</xccdf:fixtext>
          <xccdf:fix id="F-33129r1014805_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230485" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230486">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230486r1017270_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-030742</xccdf:version>
          <xccdf:title>RHEL 8 must disable network management of the chrony daemon.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Sources outside the configured acceptable allowance (drift) may be inaccurate.

Not exposing the management interface of the chrony daemon on the network diminishes the attack space.

RHEL 8 utilizes the "timedatectl" command to view the status of the "systemd-timesyncd.service". The "timedatectl" status will display the local time, UTC, and the offset from UTC.

Note that USNO offers authenticated NTP service to DOD and U.S. Government agencies operating on the NIPR and SIPR networks. Visit https://www.usno.navy.mil/USNO/time/ntp/DOD-customers for more information.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33130r1014808_fix">Configure the operating system disable network management of the chrony daemon by adding or modifying the following line in the "/etc/chrony.conf" file.

cmdport 0</xccdf:fixtext>
          <xccdf:fix id="F-33130r1014808_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230486" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230487">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230487r1017271_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-040000</xccdf:version>
          <xccdf:title>RHEL 8 must not have the telnet-server package installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

Examples of non-essential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission, but which cannot be disabled.

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.

The telnet service provides an unencrypted remote access service that does not provide for the confidentiality and integrity of user passwords or the remote session.

If a privileged user were to log on using this service, the privileged user password could be compromised.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33131r568208_fix">Configure the operating system to disable non-essential capabilities by removing the telnet-server package from the system with the following command:

$ sudo yum remove telnet-server</xccdf:fixtext>
          <xccdf:fix id="F-33131r568208_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230487" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230488">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230488r1017272_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040001</xccdf:version>
          <xccdf:title>RHEL 8 must not have any automated bug reporting tools installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

Examples of non-essential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission, but which cannot be disabled.

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33132r568211_fix">Configure the operating system to disable non-essential capabilities by removing automated bug reporting packages from the system with the following command:

$ sudo yum remove abrt*</xccdf:fixtext>
          <xccdf:fix id="F-33132r568211_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230488" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230489">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230489r1017273_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040002</xccdf:version>
          <xccdf:title>RHEL 8 must not have the sendmail package installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

Examples of non-essential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission, but which cannot be disabled.

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33133r568214_fix">Configure the operating system to disable non-essential capabilities by removing the sendmail package from the system with the following command:

$ sudo yum remove sendmail</xccdf:fixtext>
          <xccdf:fix id="F-33133r568214_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230489" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230491">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230491r1017274_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-040004</xccdf:version>
          <xccdf:title>RHEL 8 must enable mitigations against processor-based vulnerabilities.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

Examples of non-essential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission, but which cannot be disabled.

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.

Kernel page-table isolation is a kernel feature that mitigates the Meltdown security vulnerability and hardens the kernel against attempts to bypass kernel address space layout randomization (KASLR).&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33135r568220_fix">Configure RHEL 8 to enable kernel page-table isolation with the following command:

$ sudo grubby --update-kernel=ALL --args="pti=on"

Add or modify the following line in "/etc/default/grub" to ensure the configuration survives kernel updates:

GRUB_CMDLINE_LINUX="pti=on"</xccdf:fixtext>
          <xccdf:fix id="F-33135r568220_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230491" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230492">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230492r1017275_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-040010</xccdf:version>
          <xccdf:title>RHEL 8 must not have the rsh-server package installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

The rsh-server service provides an unencrypted remote access service that does not provide for the confidentiality and integrity of user passwords or the remote session and has very weak authentication.

If a privileged user were to log on using this service, the privileged user password could be compromised.

Satisfies: SRG-OS-000095-GPOS-00049, SRG-OS-000074-GPOS-00042&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33136r568223_fix">Configure the operating system to disable non-essential capabilities by removing the rsh-server package from the system with the following command:

$ sudo yum remove rsh-server</xccdf:fixtext>
          <xccdf:fix id="F-33136r568223_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230492" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230494">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230494r1017277_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-040021</xccdf:version>
          <xccdf:title>RHEL 8 must disable the asynchronous transfer mode (ATM) protocol.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Failing to disconnect unused protocols can result in a system compromise.

The Asynchronous Transfer Mode (ATM) is a protocol operating on network, data link, and physical layers, based on virtual circuits and virtual paths. Disabling ATM protects the system against exploitation of any laws in its implementation.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33138r942917_fix">Configure the operating system to disable the ability to use the ATM protocol kernel module.

Add or update the following lines in the file "/etc/modprobe.d/blacklist.conf":

     install atm /bin/false
     blacklist atm

Reboot the system for the settings to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33138r942917_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230494" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230495">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230495r1017278_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-040022</xccdf:version>
          <xccdf:title>RHEL 8 must disable the controller area network (CAN) protocol.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Failing to disconnect unused protocols can result in a system compromise.

The Controller Area Network (CAN) is a serial communications protocol, which was initially developed for automotive and is now also used in marine, industrial, and medical applications. Disabling CAN protects the system against exploitation of any flaws in its implementation.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33139r942920_fix">Configure the operating system to disable the ability to use the CAN protocol kernel module.

Add or update the following lines in the file "/etc/modprobe.d/blacklist.conf":

     install can /bin/false
     blacklist can

Reboot the system for the settings to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33139r942920_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230495" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230496">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230496r1017279_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-040023</xccdf:version>
          <xccdf:title>RHEL 8 must disable the stream control transmission protocol (SCTP).</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Failing to disconnect unused protocols can result in a system compromise.

The Stream Control Transmission Protocol (SCTP) is a transport layer protocol, designed to support the idea of message-oriented communication, with several streams of messages within one connection. Disabling SCTP protects the system against exploitation of any flaws in its implementation.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33140r942923_fix">Configure the operating system to disable the ability to use the SCTP kernel module.

Add or update the following lines in the file "/etc/modprobe.d/blacklist.conf":

     install sctp /bin/false
     blacklist sctp

Reboot the system for the settings to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33140r942923_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230496" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230497">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230497r1017280_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-040024</xccdf:version>
          <xccdf:title>RHEL 8 must disable the transparent inter-process communication (TIPC) protocol.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Failing to disconnect unused protocols can result in a system compromise.

The Transparent Inter-Process Communication (TIPC) protocol is designed to provide communications between nodes in a cluster. Disabling TIPC protects the system against exploitation of any flaws in its implementation.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33141r942926_fix">Configure the operating system to disable the ability to use the TIPC protocol kernel module.

Add or update the following lines in the file "/etc/modprobe.d/blacklist.conf":

     install tipc /bin/false
     blacklist tipc

Reboot the system for the settings to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33141r942926_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230497" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230498">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230498r1017281_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-040025</xccdf:version>
          <xccdf:title>RHEL 8 must disable mounting of cramfs.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Removing support for unneeded filesystem types reduces the local attack surface of the server.

Compressed ROM/RAM file system (or cramfs) is a read-only file system designed for simplicity and space-efficiency.  It is mainly used in embedded and small-footprint systems.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33142r942929_fix">Configure the operating system to disable the ability to use the cramfs kernel module.

Add or update the following lines in the file "/etc/modprobe.d/blacklist.conf":

     install cramfs /bin/false
     blacklist cramfs

Reboot the system for the settings to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33142r942929_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230498" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230499">
        <xccdf:title>SRG-OS-000095-GPOS-00049</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230499r1017282_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-040026</xccdf:version>
          <xccdf:title>RHEL 8 must disable IEEE 1394 (FireWire) Support.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The IEEE 1394 (FireWire) is a serial bus standard for high-speed real-time communication. Disabling FireWire protects the system against exploitation of any flaws in its implementation.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33143r942932_fix">Configure the operating system to disable the ability to use the firewire-core kernel module.

Add or update the following lines in the file "/etc/modprobe.d/blacklist.conf":

     install firewire-core /bin/false
     blacklist firewire-core

Reboot the system for the settings to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33143r942932_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230499" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230502">
        <xccdf:title>SRG-OS-000114-GPOS-00059</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230502r1017284_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040070</xccdf:version>
          <xccdf:title>The RHEL 8 file system automounter must be disabled unless required.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Automatically mounting file systems permits easy introduction of unknown devices, thereby facilitating malicious activity.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxAutofs" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000778</xccdf:ident>
          <xccdf:fixtext fixref="F-33146r568253_fix">Configure the operating system to disable the ability to automount devices.

Turn off the automount service with the following commands:

$ sudo systemctl stop autofs
$ sudo systemctl disable autofs

If "autofs" is required for Network File System (NFS), it must be documented with the ISSO.</xccdf:fixtext>
          <xccdf:fix id="F-33146r568253_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230502" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230503">
        <xccdf:title>SRG-OS-000114-GPOS-00059</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230503r1017285_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040080</xccdf:version>
          <xccdf:title>RHEL 8 must be configured to disable USB mass storage.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;USB mass storage permits easy introduction of unknown devices, thereby facilitating malicious activity.

Satisfies: SRG-OS-000114-GPOS-00059, SRG-OS-000378-GPOS-00163&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000778</xccdf:ident>
          <xccdf:fixtext fixref="F-33147r942935_fix">Configure the operating system to disable the ability to use the USB Storage kernel module and the ability to use USB mass storage devices.

Add or update the following lines in the file "/etc/modprobe.d/blacklist.conf":

     install usb-storage /bin/false
     blacklist usb-storage

Reboot the system for the settings to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33147r942935_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230503" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230505">
        <xccdf:title>SRG-OS-000297-GPOS-00115</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230505r958672_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040100</xccdf:version>
          <xccdf:title>A firewall must be installed on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;"Firewalld" provides an easy and effective way to block/limit remote access to the system via ports, services, and protocols.

Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access management difficult at best.

Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.

RHEL 8 functionality (e.g., RDP) must be capable of taking enforcement action if the audit reveals unauthorized activity. Automated control of remote access sessions allows organizations to ensure ongoing compliance with remote access policies by enforcing connection rules of remote access applications on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002314</xccdf:ident>
          <xccdf:fixtext fixref="F-33149r744019_fix">Install "firewalld" with the following command:

$ sudo yum install firewalld.noarch</xccdf:fixtext>
          <xccdf:fix id="F-33149r744019_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230505" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230507">
        <xccdf:title>SRG-OS-000300-GPOS-00118</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230507r1017287_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040111</xccdf:version>
          <xccdf:title>RHEL 8 Bluetooth must be disabled.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without protection of communications with wireless peripherals, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read, altered, or used to compromise the RHEL 8 operating system.

This requirement applies to wireless peripheral technologies (e.g., wireless mice, keyboards, displays, etc.) used with RHEL 8 systems. Wireless peripherals (e.g., Wi-Fi/Bluetooth/IR Keyboards, Mice, and Pointing Devices and Near Field Communications [NFC]) present a unique challenge by creating an open, unsecured port on a computer. Wireless peripherals must meet DoD requirements for wireless data transmission and be approved for use by the Authorizing Official (AO). Even though some wireless peripherals, such as mice and pointing devices, do not ordinarily carry information that need to be protected, modification of communications with these wireless peripherals may be used to compromise the RHEL 8 operating system. Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification.

Protecting the confidentiality and integrity of communications with wireless peripherals can be accomplished by physical means (e.g., employing physical barriers to wireless radio frequencies) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa. If the wireless peripheral is only passing telemetry data, encryption of the data may not be required.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001443</xccdf:ident>
          <xccdf:fixtext fixref="F-33151r942938_fix">Configure the operating system to disable the Bluetooth adapter when not in use.

Build or modify the "/etc/modprobe.d/bluetooth.conf" file with the following line:

     install bluetooth /bin/false

Disable the ability to use the Bluetooth kernel module. 
 
     $ sudo vi /etc/modprobe.d/blacklist.conf 
 
Add or update the line: 
 
     blacklist bluetooth

Reboot the system for the settings to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33151r942938_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230507" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230508">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230508r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040120</xccdf:version>
          <xccdf:title>RHEL 8 must mount /dev/shm with the nodev option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33152r568271_fix">Configure the system so that /dev/shm is mounted with the "nodev" option by adding /modifying the /etc/fstab with the following line:

tmpfs /dev/shm tmpfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33152r568271_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230508" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230509">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230509r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040121</xccdf:version>
          <xccdf:title>RHEL 8 must mount /dev/shm with the nosuid option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.
The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.
The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33153r568274_fix">Configure the system so that /dev/shm is mounted with the  "nosuid" option by adding /modifying the /etc/fstab with the following line:

tmpfs /dev/shm tmpfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33153r568274_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230509" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230510">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230510r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040122</xccdf:version>
          <xccdf:title>RHEL 8 must mount /dev/shm with the noexec option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33154r568277_fix">Configure the system so that /dev/shm is mounted with the "noexec" option by adding /modifying the /etc/fstab with the following line:

tmpfs /dev/shm tmpfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33154r568277_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230510" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230511">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230511r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040123</xccdf:version>
          <xccdf:title>RHEL 8 must mount /tmp with the nodev option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33155r568280_fix">Configure the system so that /tmp is mounted with the "nodev" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-tmp /tmp xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33155r568280_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230511" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230512">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230512r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040124</xccdf:version>
          <xccdf:title>RHEL 8 must mount /tmp with the nosuid option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.
The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.
The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33156r568283_fix">Configure the system so that /tmp is mounted with the "nosuid" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-tmp /tmp xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33156r568283_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230512" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230513">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230513r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040125</xccdf:version>
          <xccdf:title>RHEL 8 must mount /tmp with the noexec option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33157r568286_fix">Configure the system so that /tmp is mounted with the "noexec" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-tmp /tmp xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33157r568286_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230513" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230514">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230514r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040126</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/log with the nodev option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33158r568289_fix">Configure the system so that /var/log is mounted with the "nodev" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-log /var/log xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33158r568289_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230514" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230515">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230515r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040127</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/log with the nosuid option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33159r568292_fix">Configure the system so that /var/log is mounted with the "nosuid" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-log /var/log xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33159r568292_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230515" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230516">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230516r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040128</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/log with the noexec option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33160r568295_fix">Configure the system so that /var/log is mounted with the "noexec" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-log /var/log xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33160r568295_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230516" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230517">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230517r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040129</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/log/audit with the nodev option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33161r568298_fix">Configure the system so that /var/log/audit is mounted with the "nodev" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-log-audit /var/log/audit xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33161r568298_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230517" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230518">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230518r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040130</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/log/audit with the nosuid option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33162r568301_fix">Configure the system so that /var/log/audit is mounted with the "nosuid" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-log-audit /var/log/audit xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33162r568301_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230518" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230519">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230519r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040131</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/log/audit with the noexec option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33163r568304_fix">Configure the system so that /var/log/audit is mounted with the "noexec" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-log-audit /var/log/audit xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33163r568304_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230519" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230520">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230520r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040132</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/tmp with the nodev option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33164r792926_fix">Configure the system so that /var/tmp is mounted with the "nodev" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-tmp /var/tmp xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33164r792926_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230520" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230521">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230521r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040133</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/tmp with the nosuid option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33165r792929_fix">Configure the system so that /var/tmp is mounted with the "nosuid" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-tmp /var/tmp xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33165r792929_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230521" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230522">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230522r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040134</xccdf:version>
          <xccdf:title>RHEL 8 must mount /var/tmp with the noexec option.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33166r792932_fix">Configure the system so that /var/tmp is mounted with the "noexec" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-tmp /var/tmp xfs defaults,nodev,nosuid,noexec 0 0</xccdf:fixtext>
          <xccdf:fix id="F-33166r792932_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230522" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230523">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230523r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040135</xccdf:version>
          <xccdf:title>The RHEL 8 fapolicy module must be installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

Utilizing a whitelist provides a configuration management method for allowing the execution of only authorized software. Using only authorized software decreases risk by limiting the number of potential vulnerabilities. Verification of whitelisted software occurs prior to execution or at system startup.

User home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sharing of information with an SA through shared resources.

RHEL 8 ships with many optional packages. One such package is a file access policy daemon called "fapolicyd". "fapolicyd" is a userspace daemon that determines access rights to files based on attributes of the process and file. It can be used to either blacklist or whitelist processes or file access.

Proceed with caution with enforcing the use of this daemon. Improper configuration may render the system non-functional. The "fapolicyd" API is not namespace aware and can cause issues when launching or running containers.

Satisfies: SRG-OS-000368-GPOS-00154, SRG-OS-000370-GPOS-00155, SRG-OS-000480-GPOS-00232&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-33167r744022_fix">Install "fapolicyd" with the following command:

$ sudo yum install fapolicyd.x86_64</xccdf:fixtext>
          <xccdf:fix id="F-33167r744022_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230523" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230525">
        <xccdf:title>SRG-OS-000420-GPOS-00186</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230525r958902_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040150</xccdf:version>
          <xccdf:title>A firewall must be able to protect against or limit the effects of Denial of Service (DoS) attacks by ensuring RHEL 8 can implement rate-limiting measures on impacted network interfaces.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity.

This requirement addresses the configuration of RHEL 8 to mitigate the impact of DoS attacks that have occurred or are ongoing on system availability. For each system, known and potential DoS attacks must be identified and solutions for each type implemented. A variety of technologies exists to limit or, in some cases, eliminate the effects of DoS attacks (e.g., limiting processes or establishing memory partitions). Employing increased capacity and bandwidth, combined with service redundancy, may reduce the susceptibility to some DoS attacks.

Since version 0.6.0, "firewalld" has incorporated "nftables" as its backend support. Utilizing the limit statement in "nftables" can help to mitigate DoS attacks.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002385</xccdf:ident>
          <xccdf:fixtext fixref="F-33169r902734_fix">Configure "nftables" to be the default "firewallbackend" for "firewalld" by adding or editing the following line in "/etc/firewalld/firewalld.conf":

FirewallBackend=nftables

Establish rate-limiting rules based on organization-defined types of DoS attacks on impacted network interfaces.</xccdf:fixtext>
          <xccdf:fix id="F-33169r902734_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230525" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230526">
        <xccdf:title>SRG-OS-000423-GPOS-00187</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230526r958908_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040160</xccdf:version>
          <xccdf:title>All RHEL 8 networked systems must have and implement SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. 

This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. 

Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa.

Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00190&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002418</xccdf:ident>
          <xccdf:fixtext fixref="F-33170r744031_fix">Configure the SSH service to automatically start after reboot with the following command:

$ sudo systemctl enable sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-33170r744031_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230526" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230527">
        <xccdf:title>SRG-OS-000033-GPOS-00014</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230527r1017288_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040161</xccdf:version>
          <xccdf:title>RHEL 8 must force a frequent session key renegotiation for SSH connections to the server.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. 

This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. 

Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa.

Session key regeneration limits the chances of a session key becoming compromised.

Satisfies: SRG-OS-000033-GPOS-00014, SRG-OS-000420-GPOS-00186, SRG-OS-000424-GPOS-00188&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000068</xccdf:ident>
          <xccdf:fixtext fixref="F-33171r568328_fix">Configure the system to force a frequent session key renegotiation for SSH connections to the server by add or modifying the following line in the "/etc/ssh/sshd_config" file:

RekeyLimit 1G 1h

Restart the SSH daemon for the settings to take effect.

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-33171r568328_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230527" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230529">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230529r1017289_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-040170</xccdf:version>
          <xccdf:title>The x86 Ctrl-Alt-Delete key sequence must be disabled on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;A locally logged-on user, who presses Ctrl-Alt-Delete when at the console, can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In a graphical user environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33173r833337_fix">Configure the system to disable the Ctrl-Alt-Delete sequence for the command line with the following commands:

$ sudo systemctl disable ctrl-alt-del.target

$ sudo systemctl mask ctrl-alt-del.target

Created symlink /etc/systemd/system/ctrl-alt-del.target -&gt; /dev/null

Reload the daemon for this change to take effect.

$ sudo systemctl daemon-reload</xccdf:fixtext>
          <xccdf:fix id="F-33173r833337_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230529" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230530">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230530r1017290_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-040171</xccdf:version>
          <xccdf:title>The x86 Ctrl-Alt-Delete key sequence in RHEL 8 must be disabled if a graphical user interface is installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;A locally logged-on user, who presses Ctrl-Alt-Delete, when at the console, can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In a graphical user environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxGnome" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33174r568337_fix">Configure the system to disable the Ctrl-Alt-Delete sequence when using a graphical user interface by creating or editing the /etc/dconf/db/local.d/00-disable-CAD file.

Add the setting to disable the Ctrl-Alt-Delete sequence for a graphical user interface:

[org/gnome/settings-daemon/plugins/media-keys]
logout=''

Note: The value above is set to two single quotations.

Then update the dconf settings:

$ sudo dconf update</xccdf:fixtext>
          <xccdf:fix id="F-33174r568337_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230530" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230531">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230531r1017292_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-040172</xccdf:version>
          <xccdf:title>The systemd Ctrl-Alt-Delete burst key sequence in RHEL 8 must be disabled.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;A locally logged-on user who presses Ctrl-Alt-Delete when at the console can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In a graphical user environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33175r1017291_fix">Configure the system to disable the CtrlAltDelBurstAction by added or modifying the following line in the "/etc/systemd/system.conf" configuration file:

CtrlAltDelBurstAction=none

Reload the daemon for this change to take effect.

$ sudo systemctl daemon-reload</xccdf:fixtext>
          <xccdf:fix id="F-33175r1017291_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230531" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230532">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230532r1017294_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040180</xccdf:version>
          <xccdf:title>The debug-shell systemd service must be disabled on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The debug-shell requires no authentication and provides root privileges to anyone who has physical access to the machine.  While this feature is disabled by default, masking it adds an additional layer of assurance that it will not be enabled via a dependency in systemd.  This also prevents attackers with physical access from trivially bypassing security on the machine through valid troubleshooting configurations and gaining root access when the system is rebooted.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33176r1017293_fix">Configure the system to mask the debug-shell systemd service with the following command:

$ sudo systemctl mask debug-shell.service

Created symlink /etc/systemd/system/debug-shell.service -&gt; /dev/null

Reload the daemon to take effect.

$ sudo systemctl daemon-reload</xccdf:fixtext>
          <xccdf:fix id="F-33176r1017293_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230532" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230533">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230533r1017295_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-040190</xccdf:version>
          <xccdf:title>The Trivial File Transfer Protocol (TFTP) server package must not be installed if not required for RHEL 8 operational support.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If TFTP is required for operational support (such as the transmission of router configurations) its use must be documented with the Information System Security Officer (ISSO), restricted to only authorized personnel, and have access control rules established.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33177r568346_fix">Remove the TFTP package from the system with the following command:

$ sudo yum remove tftp-server</xccdf:fixtext>
          <xccdf:fix id="F-33177r568346_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230533" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230534">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230534r1017296_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-040200</xccdf:version>
          <xccdf:title>The root account must be the only account having unrestricted access to the RHEL 8 system.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If an account other than root also has a User Identifier (UID) of "0", it has root authority, giving that account unrestricted access to the entire operating system. Multiple accounts with a UID of "0" afford an opportunity for potential intruders to guess a password for a privileged account.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33178r568349_fix">Change the UID of any account on the system, other than root, that has a UID of "0". 

If the account is associated with system commands or applications, the UID should be changed to one greater than "0" but less than "1000". Otherwise, assign a UID of greater than "1000" that has not already been assigned.</xccdf:fixtext>
          <xccdf:fix id="F-33178r568349_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230534" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230535">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230535r1017297_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040210</xccdf:version>
          <xccdf:title>RHEL 8 must prevent IPv6 Internet Control Message Protocol (ICMP) redirect messages from being accepted.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxIPv6enabled" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33179r858792_fix">Configure RHEL 8 to prevent IPv6 ICMP redirect messages from being accepted.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv6.conf.default.accept_redirects = 0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33179r858792_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230535" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230536">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230536r1017298_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040220</xccdf:version>
          <xccdf:title>RHEL 8 must not send Internet Control Message Protocol (ICMP) redirects.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages contain information from the system's route table, possibly revealing portions of the network topology.

There are notable differences between Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). There is only a directive to disable sending of IPv4 redirected packets. Refer to RFC4294 for an explanation of "IPv6 Node Requirements", which resulted in this difference between IPv4 and IPv6.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33180r858794_fix">Configure RHEL 8 to not allow interfaces to perform IPv4 ICMP redirects.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv4.conf.all.send_redirects=0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33180r858794_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230536" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230537">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230537r1017299_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040230</xccdf:version>
          <xccdf:title>RHEL 8 must not respond to Internet Control Message Protocol (ICMP) echoes sent to a broadcast address.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Responding to broadcast ICMP echoes facilitates network mapping and provides a vector for amplification attacks.

There are notable differences between Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). IPv6 does not implement the same method of broadcast as IPv4. Instead, IPv6 uses multicast addressing to the all-hosts multicast group. Refer to RFC4294 for an explanation of "IPv6 Node Requirements", which resulted in this difference between IPv4 and IPv6.
The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33181r858796_fix">Configure RHEL 8 to not respond to IPv4 ICMP echoes sent to a broadcast address.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv4.icmp_echo_ignore_broadcasts=1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33181r858796_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230537" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230538">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230538r1017300_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040240</xccdf:version>
          <xccdf:title>RHEL 8 must not forward IPv6 source-routed packets.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when forwarding is enabled and the system is functioning as a router.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxIPv6enabled" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33182r858800_fix">Configure RHEL 8 to not forward IPv6 source-routed packets.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv6.conf.all.accept_source_route=0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33182r858800_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230538" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230539">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230539r1017301_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040250</xccdf:version>
          <xccdf:title>RHEL 8 must not forward IPv6 source-routed packets by default.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when forwarding is enabled and the system is functioning as a router.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxIPv6enabled" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33183r858805_fix">Configure RHEL 8 to not forward IPv6 source-routed packets by default.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv6.conf.default.accept_source_route=0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33183r858805_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230539" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230540">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230540r1017302_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040260</xccdf:version>
          <xccdf:title>RHEL 8 must not enable IPv6 packet forwarding unless the system is a router.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unnecessarily transmitted across the network.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxIPv6enabled" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33184r858809_fix">Configure RHEL 8 to not allow IPv6 packet forwarding, unless the system is a router.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv6.conf.all.forwarding=0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33184r858809_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230540" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230541">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230541r1017303_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040261</xccdf:version>
          <xccdf:title>RHEL 8 must not accept router advertisements on all IPv6 interfaces.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unnecessarily transmitted across the network.

An illicit router advertisement message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxIPv6enabled" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33185r858811_fix">Configure RHEL 8 to not accept router advertisements on all IPv6 interfaces unless the system is a router.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv6.conf.all.accept_ra=0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33185r858811_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230541" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230542">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230542r1017304_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040262</xccdf:version>
          <xccdf:title>RHEL 8 must not accept router advertisements on all IPv6 interfaces by default.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unnecessarily transmitted across the network.

An illicit router advertisement message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxIPv6enabled" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33186r858813_fix">Configure RHEL 8 to not accept router advertisements on all IPv6 interfaces by default unless the system is a router.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv6.conf.default.accept_ra=0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33186r858813_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230542" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230543">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230543r1017305_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040270</xccdf:version>
          <xccdf:title>RHEL 8 must not allow interfaces to perform Internet Control Message Protocol (ICMP) redirects by default.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages contain information from the system's route table, possibly revealing portions of the network topology.

There are notable differences between Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). There is only a directive to disable sending of IPv4 redirected packets. Refer to RFC4294 for an explanation of "IPv6 Node Requirements", which resulted in this difference between IPv4 and IPv6.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33187r858815_fix">Configure RHEL 8 to not allow interfaces to perform Internet Protocol version 4 (IPv4) ICMP redirects by default.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv4.conf.default.send_redirects = 0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33187r858815_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230543" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230544">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230544r1017306_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040280</xccdf:version>
          <xccdf:title>RHEL 8 must ignore IPv6 Internet Control Message Protocol (ICMP) redirect messages.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxIPv6enabled" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33188r858819_fix">Configure RHEL 8 to ignore IPv6 ICMP redirect messages.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv6.conf.all.accept_redirects = 0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33188r858819_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230544" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230545">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230545r1017307_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040281</xccdf:version>
          <xccdf:title>RHEL 8 must disable access to network bpf syscall from unprivileged processes.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33189r858821_fix">Configure RHEL 8 to prevent privilege escalation thru the kernel by disabling access to the bpf syscall by adding the following line to a file, in the "/etc/sysctl.d" directory:

kernel.unprivileged_bpf_disabled = 1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33189r858821_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230545" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230546">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230546r1017308_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040282</xccdf:version>
          <xccdf:title>RHEL 8 must restrict usage of ptrace to descendant  processes.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33190r858823_fix">Configure RHEL 8 to restrict usage of ptrace to descendant processes by adding the following line to a file, in the "/etc/sysctl.d" directory:

kernel.yama.ptrace_scope = 1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33190r858823_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230546" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230547">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230547r1017309_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040283</xccdf:version>
          <xccdf:title>RHEL 8 must restrict exposed kernel pointer addresses access.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33191r858825_fix">Configure RHEL 8 to restrict exposed kernel pointer addresses access by adding the following line to a file, in the "/etc/sysctl.d" directory:

kernel.kptr_restrict = 1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33191r858825_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230547" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230548">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230548r1017310_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040284</xccdf:version>
          <xccdf:title>RHEL 8 must disable the use of user namespaces.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33192r1014817_fix">Configure RHEL 8 to disable the use of user namespaces by adding the following line to a file, in the "/etc/sysctl.d" directory:

user.max_user_namespaces = 0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33192r1014817_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230548" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230549">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230549r1017311_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040285</xccdf:version>
          <xccdf:title>RHEL 8 must use reverse path filtering on all IPv4 interfaces.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33193r858829_fix">Configure RHEL 8 to use reverse path filtering on all IPv4 interfaces by adding the following line to a file, in the "/etc/sysctl.d" directory:

net.ipv4.conf.all.rp_filter = 1

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-33193r858829_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230549" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230550">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230550r1017312_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040290</xccdf:version>
          <xccdf:title>RHEL 8 must be configured to prevent unrestricted mail relaying.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If unrestricted mail relaying is permitted, unauthorized senders could use this host as a mail relay for the purpose of sending spam or other unauthorized activity.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxPostfix" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33194r568397_fix">If "postfix" is installed, modify the "/etc/postfix/main.cf" file to restrict client connections to the local network with the following command:

$ sudo postconf -e 'smtpd_client_restrictions = permit_mynetworks,reject'</xccdf:fixtext>
          <xccdf:fix id="F-33194r568397_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230550" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230553">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230553r1017315_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040320</xccdf:version>
          <xccdf:title>The graphical display manager must not be installed on RHEL 8 unless approved.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Internet services that are not required for system or application processes must not be active to decrease the attack surface of the system. Graphical display managers have a long history of security vulnerabilities and must not be used, unless approved and documented.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33197r809323_fix">Document the requirement for a graphical user interface with the ISSO or reinstall the operating system without the graphical user interface. If reinstallation is not feasible, then continue with the following procedure:

Open an SSH session and enter the following commands:

$ sudo yum remove xorg-x11-server-Xorg xorg-x11-server-common xorg-x11-server-utils xorg-x11-server-Xwayland

A reboot is required for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-33197r809323_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230553" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230554">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230554r1017316_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040330</xccdf:version>
          <xccdf:title>RHEL 8 network interfaces must not be in promiscuous mode.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Network interfaces in promiscuous mode allow for the capture of all network traffic visible to the system. If unauthorized individuals can access these applications, it may allow them to collect information such as logon IDs, passwords, and key exchanges between systems.

If the system is being used to perform a network troubleshooting function, the use of these tools must be documented with the Information System Security Officer (ISSO) and restricted to only authorized personnel.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33198r568409_fix">Configure network interfaces to turn off promiscuous mode unless approved by the ISSO and documented.

Set the promiscuous mode of an interface to off with the following command:

$ sudo ip link set dev &lt;devicename&gt; multicast off promisc off</xccdf:fixtext>
          <xccdf:fix id="F-33198r568409_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230554" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230555">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230555r1017317_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040340</xccdf:version>
          <xccdf:title>RHEL 8 remote X connections for interactive users must be disabled unless to fulfill documented and validated mission requirements.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The security risk of using X11 forwarding is that the client's X11 display server may be exposed to attack when the SSH client requests forwarding.  A system administrator may have a stance in which they want to protect clients that may expose themselves to attack by unwittingly requesting X11 forwarding, which can warrant a "no" setting.

X11 forwarding should be enabled with caution. Users with the ability to bypass file permissions on the remote host (for the user's X11 authorization database) can access the local X11 display through the forwarded connection. An attacker may then be able to perform activities such as keystroke monitoring if the ForwardX11Trusted option is also enabled.

If X11 services are not required for the system's intended function, they should be disabled or restricted as appropriate to the system’s needs.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33199r568412_fix">Edit the "/etc/ssh/sshd_config" file to uncomment or add the line for the "X11Forwarding" keyword and set its value to "no" (this file may be named differently or be in a different location if using a version of SSH that is provided by a third-party vendor):

X11Forwarding no

The SSH service must be restarted for changes to take effect:

$ sudo systemctl restart sshd</xccdf:fixtext>
          <xccdf:fix id="F-33199r568412_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230555" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230556">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230556r1017318_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040341</xccdf:version>
          <xccdf:title>The RHEL 8 SSH daemon must prevent remote hosts from connecting to the proxy display.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;When X11 forwarding is enabled, there may be additional exposure to the server and client displays if the sshd proxy display is configured to listen on the wildcard address.  By default, sshd binds the forwarding server to the loopback address and sets the hostname part of the DIPSLAY environment variable to localhost.  This prevents remote hosts from connecting to the proxy display.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33200r568415_fix">Configure the SSH daemon to prevent remote hosts from connecting to the proxy display.

Edit the "/etc/ssh/sshd_config" file to uncomment or add the line for the "X11UseLocalhost" keyword and set its value to "yes" (this file may be named differently or be in a different location if using a version of SSH that is provided by a third-party vendor):

X11UseLocalhost yes</xccdf:fixtext>
          <xccdf:fix id="F-33200r568415_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230556" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230557">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230557r1017319_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040350</xccdf:version>
          <xccdf:title>If the Trivial File Transfer Protocol (TFTP) server is required, the RHEL 8 TFTP daemon must be configured to operate in secure mode.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Restricting TFTP to a specific directory prevents remote users from copying, transferring, or overwriting system files.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxTFTP" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33201r568418_fix">Configure the TFTP daemon to operate in secure mode by adding the following line to "/etc/xinetd.d/tftp" (or modify the line to have the required value):

server_args = -s /var/lib/tftpboot</xccdf:fixtext>
          <xccdf:fix id="F-33201r568418_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230557" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230558">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230558r1017320_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-040360</xccdf:version>
          <xccdf:title>A File Transfer Protocol (FTP) server package must not be installed unless mission essential on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The FTP service provides an unencrypted remote access that does not provide for the confidentiality and integrity of user passwords or the remote session. If a privileged user were to log on using this service, the privileged user password could be compromised. SSH or other encrypted file transfer methods must be used in place of this service.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33202r568421_fix">Document the FTP server package with the ISSO as an operational requirement or remove it from the system with the following command:

$ sudo yum remove vsftpd</xccdf:fixtext>
          <xccdf:fix id="F-33202r568421_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230558" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230559">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230559r1014820_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040370</xccdf:version>
          <xccdf:title>The gssproxy package must not be installed unless mission essential on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

The gssproxy package is a proxy for GSS API credential handling and could expose secrets on some networks. It is not needed for normal function of the OS.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000381</xccdf:ident>
          <xccdf:fixtext fixref="F-33203r568424_fix">Document the gssproxy package with the ISSO as an operational requirement or remove it from the system with the following command:

$ sudo yum remove gssproxy</xccdf:fixtext>
          <xccdf:fix id="F-33203r568424_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230559" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230560">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230560r1017321_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040380</xccdf:version>
          <xccdf:title>The iprutils package must not be installed unless mission essential on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

The iprutils package provides a suite of utilities to manage and configure SCSI devices supported by the ipr SCSI storage device driver.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33204r568427_fix">Document the iprutils package with the ISSO as an operational requirement or remove it from the system with the following command:

$ sudo yum remove iprutils</xccdf:fixtext>
          <xccdf:fix id="F-33204r568427_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230560" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-230561">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-230561r1017322_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040390</xccdf:version>
          <xccdf:title>The tuned package must not be installed unless mission essential on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

The tuned package contains a daemon that tunes the system settings dynamically. It does so by monitoring the usage of several system components periodically. Based on that information, components will then be put into lower or higher power savings modes to adapt to the current usage. The tuned package is not needed for normal OS operations.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-33205r568430_fix">Document the tuned package with the ISSO as an operational requirement or remove it from the system with the following command:

$ sudo yum remove tuned</xccdf:fixtext>
          <xccdf:fix id="F-33205r568430_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:230561" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-237640">
        <xccdf:title>SRG-OS-000120-GPOS-00061</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-237640r1017323_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010163</xccdf:version>
          <xccdf:title>The krb5-server package must not be installed on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules.

Currently, Kerberos does not utilize FIPS 140-2 cryptography.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_Linux_Not_krb5svr_1-17" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000803</xccdf:ident>
          <xccdf:fixtext fixref="F-40822r646889_fix">Document the krb5-server package with the ISSO as an operational requirement or remove it from the system with the following command:

$ sudo yum remove krb5-server</xccdf:fixtext>
          <xccdf:fix id="F-40822r646889_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:237640" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-237641">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-237641r1017324_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010382</xccdf:version>
          <xccdf:title>RHEL 8 must restrict privilege elevation to authorized personnel.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The sudo command allows a user to execute programs with elevated (administrator) privileges. It prompts the user for their password and confirms your request to execute a command by checking a file, called sudoers. If the "sudoers" file is not configured correctly, any user defined on the system can initiate privileged actions on the target system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-40823r646892_fix">Remove the following entries from the sudoers file:
ALL     ALL=(ALL) ALL
ALL     ALL=(ALL:ALL) ALL</xccdf:fixtext>
          <xccdf:fix id="F-40823r646892_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:237641" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-237642">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-237642r991589_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010383</xccdf:version>
          <xccdf:title>RHEL 8 must use the invoking user's password for privilege escalation when using "sudo".</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The sudoers security policy requires that users authenticate themselves before they can use sudo. When sudoers requires authentication, it validates the invoking user's credentials. If the rootpw, targetpw, or runaspw flags are defined and not disabled, by default the operating system will prompt the invoking user for the "root" user password. 
For more information on each of the listed configurations, reference the sudoers(5) manual page.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002227</xccdf:ident>
          <xccdf:fixtext fixref="F-40824r880726_fix">Define the following in the Defaults section of the /etc/sudoers file or a configuration file in the /etc/sudoers.d/ directory:
     Defaults !targetpw
     Defaults !rootpw
     Defaults !runaspw

Remove any configurations that conflict with the above from the following locations: 
     /etc/sudoers
     /etc/sudoers.d/</xccdf:fixtext>
          <xccdf:fix id="F-40824r880726_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:237642" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-237643">
        <xccdf:title>SRG-OS-000373-GPOS-00156</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-237643r1050789_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010384</xccdf:version>
          <xccdf:title>RHEL 8 must require re-authentication when using the "sudo" command.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without re-authentication, users may access resources or perform tasks for which they do not have authorization. 

When operating systems provide the capability to escalate a functional capability, it is critical the organization requires the user to re-authenticate when using the "sudo" command.

If the value is set to an integer less than 0, the user's time stamp will not expire and the user will not have to re-authenticate for privileged actions until the user's session is terminated.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002038</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004895</xccdf:ident>
          <xccdf:fixtext fixref="F-40825r858763_fix">Configure the "sudo" command to require re-authentication.
Edit the /etc/sudoers file:
$ sudo visudo

Add or modify the following line:
Defaults timestamp_timeout=[value]
Note: The "[value]" must be a number that is greater than or equal to "0".

Remove any duplicate or conflicting lines from /etc/sudoers and /etc/sudoers.d/ files.</xccdf:fixtext>
          <xccdf:fix id="F-40825r858763_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:237643" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244519">
        <xccdf:title>SRG-OS-000023-GPOS-00006</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244519r1017326_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010049</xccdf:version>
          <xccdf:title>RHEL 8 must display a banner before granting local or remote access to the system via a graphical user logon.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance.

System use notifications are required only for access via logon interfaces with human users and are not required when such human interfaces do not exist.

Satisfies: SRG-OS-000023-GPOS-00006, SRG-OS-000228-GPOS-00088&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxGnome" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000048</xccdf:ident>
          <xccdf:fixtext fixref="F-47751r743805_fix">Configure the operating system to display a banner before granting access to the system.

Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable.

Create a database to contain the system-wide graphical user logon settings (if it does not already exist) with the following command:

$ sudo touch /etc/dconf/db/local.d/01-banner-message

Add the following lines to the [org/gnome/login-screen] section of the "/etc/dconf/db/local.d/01-banner-message":

[org/gnome/login-screen]

banner-message-enable=true

Run the following command to update the database:

$ sudo dconf update</xccdf:fixtext>
          <xccdf:fix id="F-47751r743805_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244519" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244523">
        <xccdf:title>SRG-OS-000080-GPOS-00048</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244523r1017329_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010152</xccdf:version>
          <xccdf:title>RHEL 8 operating systems must require authentication upon booting into emergency mode.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If the system does not require valid root authentication before it boots into emergency or rescue mode, anyone who invokes emergency or rescue mode is granted privileged access to all files on the system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000213</xccdf:ident>
          <xccdf:fixtext fixref="F-47755r743817_fix">Configure the system to require authentication upon booting into emergency mode by adding the following line to the "/usr/lib/systemd/system/emergency.service" file.

ExecStart=-/usr/lib/systemd/systemd-sulogin-shell emergency</xccdf:fixtext>
          <xccdf:fix id="F-47755r743817_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244523" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244524">
        <xccdf:title>SRG-OS-000120-GPOS-00061</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244524r1017330_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010159</xccdf:version>
          <xccdf:title>The RHEL 8 pam_unix.so module must be configured in the system-auth file to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules. 

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000803</xccdf:ident>
          <xccdf:fixtext fixref="F-47756r809330_fix">Configure RHEL 8 to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.

Edit/modify the following line in the "/etc/pam.d/system-auth" file to include the sha512 option for pam_unix.so:

password sufficient pam_unix.so sha512</xccdf:fixtext>
          <xccdf:fix id="F-47756r809330_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244524" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244525">
        <xccdf:title>SRG-OS-000163-GPOS-00072</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244525r1017331_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010201</xccdf:version>
          <xccdf:title>RHEL 8 must be configured so that all network connections associated with SSH traffic are terminated after 10 minutes of becoming unresponsive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminating an idle SSH session will also free up resources committed by the managed network element.

Terminating network connections associated with communications sessions includes, for example, deallocating associated TCP/IP address/port pairs at the operating system level and deallocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean that the operating system terminates all sessions or network access; it only ends the unresponsive session and releases the resources associated with that session.

RHEL 8 uses /etc/ssh/sshd_config for configurations of OpenSSH. Within the sshd_config, the product of the values of "ClientAliveInterval" and "ClientAliveCountMax" is used to establish the inactivity threshold. The "ClientAliveInterval" is a timeout interval in seconds after which if no data has been received from the client, sshd will send a message through the encrypted channel to request a response from the client. The "ClientAliveCountMax" is the number of client alive messages that may be sent without sshd receiving any messages back from the client. If this threshold is met, sshd will disconnect the client. For more information on these settings and others, refer to the sshd_config man pages.

Satisfies: SRG-OS-000163-GPOS-00072, SRG-OS-000126-GPOS-00066, SRG-OS-000279-GPOS-00109&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001133</xccdf:ident>
          <xccdf:fixtext fixref="F-47757r917885_fix">Note: This setting must be applied in conjunction with RHEL-08-010200 to function correctly.

Configure the SSH server to terminate a user session automatically after the SSH client has been unresponsive for 10 minutes.

Modify or append the following lines in the "/etc/ssh/sshd_config" file:

     ClientAliveInterval 600

For the changes to take effect, the SSH daemon must be restarted.

     $ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-47757r917885_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244525" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244527">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244527r1017333_rule" severity="low" weight="10.0">
          <xccdf:version>RHEL-08-010472</xccdf:version>
          <xccdf:title>RHEL 8 must have the packages required to use the hardware random number generator entropy gatherer service.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The most important characteristic of a random number generator is its randomness, namely its ability to deliver random numbers that are impossible to predict.  Entropy in computer security is associated with the unpredictability of a source of randomness.  The random source with high entropy tends to achieve a uniform distribution of random values.  Random number generators are one of the most important building blocks of cryptosystems.  

The rngd service feeds random data from hardware device to kernel random device. Quality (non-predictable) random number generation is important for several security functions (i.e., ciphers).&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47759r743829_fix">Install the packages required to enabled the hardware random number generator entropy gatherer service with the following command:

$ sudo yum install rng-tools</xccdf:fixtext>
          <xccdf:fix id="F-47759r743829_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244527" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244528">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244528r1017335_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010522</xccdf:version>
          <xccdf:title>The RHEL 8 SSH daemon must not allow GSSAPI authentication, except to fulfill documented and validated mission requirements.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Configuring this setting for the SSH daemon provides additional assurance that remote logon via SSH will require a password, even in the event of misconfiguration elsewhere.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47760r743832_fix">Configure the SSH daemon to not allow GSSAPI authentication.

Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "no":

GSSAPIAuthentication no

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service</xccdf:fixtext>
          <xccdf:fix id="F-47760r743832_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244528" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244529">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244529r1017336_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010544</xccdf:version>
          <xccdf:title>RHEL 8 must use a separate file system for /var/tmp.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47761r743835_fix">Migrate the "/var/tmp" path onto a separate file system.</xccdf:fixtext>
          <xccdf:fix id="F-47761r743835_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244529" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244530">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244530r1017337_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010572</xccdf:version>
          <xccdf:title>RHEL 8 must prevent files with the setuid and setgid bit set from being executed on the /boot/efi directory.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxUEFI" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47762r743838_fix">Configure the "/etc/fstab" to use the "nosuid" option on the /boot/efi directory.</xccdf:fixtext>
          <xccdf:fix id="F-47762r743838_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244530" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244536">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244536r1017343_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020032</xccdf:version>
          <xccdf:title>RHEL 8 must disable the user list at logon for graphical user interfaces.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Leaving the user list enabled is a security risk since it allows anyone with physical access to the system to enumerate known user accounts without authenticated access to the system.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxGnome" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47768r743856_fix">Configure the operating system to disable the user list at logon for graphical user interfaces.

Create a database to contain the system-wide screensaver settings (if it does not already exist) with the following command: 
Note: The example below is using the database "local" for the system, so if the system is using another database in "/etc/dconf/profile/user", the file should be created under the appropriate subdirectory.

$ sudo touch /etc/dconf/db/local.d/02-login-screen

[org/gnome/login-screen]
disable-user-list=true

Update the system databases:
$ sudo dconf update</xccdf:fixtext>
          <xccdf:fix id="F-47768r743856_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244536" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244539">
        <xccdf:title>SRG-OS-000029-GPOS-00010</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244539r1017346_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020082</xccdf:version>
          <xccdf:title>RHEL 8 must prevent a user from overriding the screensaver lock-enabled setting for the graphical user interface.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature of the absence. Rather than relying on the user to manually lock their operating system session prior to vacating the vicinity, operating systems need to be able to identify when a user's session has idled and take action to initiate the session lock.

The session lock is implemented at the point where session activity can be determined and/or controlled.

Implementing session settings will have little value if a user is able to manipulate these settings from the defaults prescribed in the other requirements of this implementation guide.

Locking these settings from non-privileged users is crucial to maintaining a protected baseline.

Satisfies: SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012, SRG-OS-000480-GPOS-00227&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_LinuxGnome" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000057</xccdf:ident>
          <xccdf:fixtext fixref="F-47771r743865_fix">Configure the operating system to prevent a user from overriding settings for graphical user interfaces.

Create a database to contain the system-wide screensaver settings (if it does not already exist) with the following command: 

Note: The example below is using the database "local" for the system, so if the system is using another database in "/etc/dconf/profile/user", the file should be created under the appropriate subdirectory.

$ sudo touch /etc/dconf/db/local.d/locks/session

Add the following setting to prevent non-privileged users from modifying it:

/org/gnome/desktop/screensaver/lock-enabled</xccdf:fixtext>
          <xccdf:fix id="F-47771r743865_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244539" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244541">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244541r1017347_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-020332</xccdf:version>
          <xccdf:title>RHEL 8 must not allow blank or null passwords in the password-auth file.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords should never be used in operational environments.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47773r743871_fix">Remove any instances of the "nullok" option in the "/etc/pam.d/password-auth" file to prevent logons with empty passwords.

Note: Manual changes to the listed file may be overwritten by the "authselect" program.</xccdf:fixtext>
          <xccdf:fix id="F-47773r743871_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244541" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244542">
        <xccdf:title>SRG-OS-000062-GPOS-00031</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244542r1017348_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030181</xccdf:version>
          <xccdf:title>RHEL 8 audit records must contain information to establish what type of events occurred, the source of events, where events occurred, and the outcome of events.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.

Associating event types with detected events in RHEL 8 audit logs provides a means of investigating an attack, recognizing resource utilization or capacity thresholds, or identifying an improperly configured RHEL 8 system.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000038-GPOS-00016, SRG-OS-000039-GPOS-00017, SRG-OS-000040-GPOS-00018, SRG-OS-000041-GPOS-00019, SRG-OS-000042-GPOS-00021, SRG-OS-000051-GPOS-00024, SRG-OS-000054-GPOS-00025, SRG-OS-000122-GPOS-00063, SRG-OS-000254-GPOS-00095, SRG-OS-000255-GPOS-00096, SRG-OS-000337-GPOS-00129, SRG-OS-000348-GPOS-00136, SRG-OS-000349-GPOS-00137, SRG-OS-000350-GPOS-00138, SRG-OS-000351-GPOS-00139, SRG-OS-000352-GPOS-00140, SRG-OS-000353-GPOS-00141, SRG-OS-000354-GPOS-00142, SRG-OS-000358-GPOS-00145, SRG-OS-000365-GPOS-00152, SRG-OS-000392-GPOS-00172, SRG-OS-000475-GPOS-00220&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000169</xccdf:ident>
          <xccdf:fixtext fixref="F-47774r743874_fix">Configure the audit service to produce audit records containing the information needed to establish when (date and time) an event occurred with the following commands:

$ sudo systemctl enable auditd.service

$ sudo systemctl start auditd.service</xccdf:fixtext>
          <xccdf:fix id="F-47774r743874_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244542" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244543">
        <xccdf:title>SRG-OS-000343-GPOS-00134</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244543r971542_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-030731</xccdf:version>
          <xccdf:title>RHEL 8 must notify the System Administrator (SA) and Information System Security Officer (ISSO) (at a minimum) when allocated audit record storage volume 75 percent utilization.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If security personnel are not notified immediately when storage volume reaches 75 percent utilization, they are unable to plan for audit record storage capacity expansion.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001855</xccdf:ident>
          <xccdf:fixtext fixref="F-47775r743877_fix">Configure the operating system to initiate an action to notify the SA and ISSO (at a minimum) when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity by adding/modifying the following line in the /etc/audit/auditd.conf file.

space_left_action = email

Note: Option names and values in the auditd.conf file are case insensitive.</xccdf:fixtext>
          <xccdf:fix id="F-47775r743877_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244543" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244544">
        <xccdf:title>SRG-OS-000297-GPOS-00115</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244544r958672_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040101</xccdf:version>
          <xccdf:title>A firewall must be active on RHEL 8.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;"Firewalld" provides an easy and effective way to block/limit remote access to the system via ports, services, and protocols.

Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access management difficult at best.

Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.
RHEL 8 functionality (e.g., RDP) must be capable of taking enforcement action if the audit reveals unauthorized activity. Automated control of remote access sessions allows organizations to ensure ongoing compliance with remote access policies by enforcing connection rules of remote access applications on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002314</xccdf:ident>
          <xccdf:fixtext fixref="F-47776r743880_fix">Configure "firewalld" to protect the operating system with the following command:

$ sudo systemctl enable firewalld</xccdf:fixtext>
          <xccdf:fix id="F-47776r743880_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244544" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244545">
        <xccdf:title>SRG-OS-000368-GPOS-00154</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244545r958804_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040136</xccdf:version>
          <xccdf:title>The RHEL 8 fapolicy module must be enabled.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

Utilizing a whitelist provides a configuration management method for allowing the execution of only authorized software. Using only authorized software decreases risk by limiting the number of potential vulnerabilities. Verification of whitelisted software occurs prior to execution or at system startup.

User home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sharing of information with an SA through shared resources.

RHEL 8 ships with many optional packages. One such package is a file access policy daemon called "fapolicyd". "fapolicyd" is a userspace daemon that determines access rights to files based on attributes of the process and file. It can be used to either blacklist or whitelist processes or file access.

Proceed with caution with enforcing the use of this daemon. Improper configuration may render the system non-functional. The "fapolicyd" API is not namespace aware and can cause issues when launching or running containers.

Satisfies: SRG-OS-000368-GPOS-00154, SRG-OS-000370-GPOS-00155, SRG-OS-000480-GPOS-00232&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001764</xccdf:ident>
          <xccdf:fixtext fixref="F-47777r743883_fix">Enable "fapolicyd" using the following command:

$ sudo systemctl enable --now fapolicyd</xccdf:fixtext>
          <xccdf:fix id="F-47777r743883_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244545" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244547">
        <xccdf:title>SRG-OS-000378-GPOS-00163</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244547r1014811_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040139</xccdf:version>
          <xccdf:title>RHEL 8 must have the USBGuard installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity.
Peripherals include, but are not limited to, such devices as flash drives, external storage, and printers.
A new feature that RHEL 8 provides is the USBGuard software framework. The USBguard-daemon is the main component of the USBGuard software framework. It runs as a service in the background and enforces the USB device authorization policy for all USB devices. The policy is defined by a set of rules using a rule language described in the usbguard-rules.conf file. The policy and the authorization state of USB devices can be modified during runtime using the usbguard tool.

The System Administrator (SA) must work with the site Information System Security Officer (ISSO) to determine a list of authorized peripherals and establish rules within the USBGuard software framework to allow only authorized devices.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001958</xccdf:ident>
          <xccdf:fixtext fixref="F-47779r743889_fix">Install the USBGuard package with the following command:

$ sudo yum install usbguard.x86_64</xccdf:fixtext>
          <xccdf:fix id="F-47779r743889_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244547" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244548">
        <xccdf:title>SRG-OS-000378-GPOS-00163</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244548r1014815_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040141</xccdf:version>
          <xccdf:title>RHEL 8 must enable the USBGuard.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity.

Peripherals include, but are not limited to, such devices as flash drives, external storage, and printers.

A new feature that RHEL 8 provides is the USBGuard software framework. The USBguard-daemon is the main component of the USBGuard software framework. It runs as a service in the background and enforces the USB device authorization policy for all USB devices. The policy is defined by a set of rules using a rule language described in the usbguard-rules.conf file. The policy and the authorization state of USB devices can be modified during runtime using the usbguard tool.

The System Administrator (SA) must work with the site Information System Security Officer (ISSO) to determine a list of authorized peripherals and establish rules within the USBGuard software framework to allow only authorized devices.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001958</xccdf:ident>
          <xccdf:fixtext fixref="F-47780r743892_fix">Configure the operating system to enable the blocking of unauthorized peripherals with the following commands:

$ sudo systemctl enable usbguard.service

$ sudo systemctl start usbguard.service

Note: Enabling and starting usbguard without properly configuring it for an individual system will immediately prevent any access over a usb device such as a keyboard or mouse</xccdf:fixtext>
          <xccdf:fix id="F-47780r743892_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244548" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244549">
        <xccdf:title>SRG-OS-000423-GPOS-00187</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244549r958908_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040159</xccdf:version>
          <xccdf:title>All RHEL 8 networked systems must have SSH installed.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. 

This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. 

Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa.

Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00190&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002418</xccdf:ident>
          <xccdf:fixtext fixref="F-47781r743895_fix">Install SSH packages onto the host with the following command:

$ sudo yum install openssh-server.x86_64</xccdf:fixtext>
          <xccdf:fix id="F-47781r743895_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244549" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244550">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244550r1017350_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040209</xccdf:version>
          <xccdf:title>RHEL 8 must prevent IPv4 Internet Control Message Protocol (ICMP) redirect messages from being accepted.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47782r858790_fix">Configure RHEL 8 to prevent IPv4 ICMP redirect messages from being accepted.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv4.conf.default.accept_redirects = 0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-47782r858790_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244550" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244551">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244551r1017351_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040239</xccdf:version>
          <xccdf:title>RHEL 8 must not forward IPv4 source-routed packets.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when forwarding is enabled and the system is functioning as a router.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47783r858798_fix">Configure RHEL 8 to not forward IPv4 source-routed packets.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv4.conf.all.accept_source_route=0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-47783r858798_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244551" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244552">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244552r1017352_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040249</xccdf:version>
          <xccdf:title>RHEL 8 must not forward IPv4 source-routed packets by default.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when forwarding is enabled and the system is functioning as a router.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47784r858802_fix">Configure RHEL 8 to not forward IPv4 source-routed packets by default.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv4.conf.default.accept_source_route=0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-47784r858802_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244552" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244553">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244553r1017353_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040279</xccdf:version>
          <xccdf:title>RHEL 8 must ignore IPv4 Internet Control Message Protocol (ICMP) redirect messages.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47785r858817_fix">Configure RHEL 8 to ignore IPv4 ICMP redirect messages.

Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory:

net.ipv4.conf.all.accept_redirects = 0

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

Load settings from all system configuration files with the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-47785r858817_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244553" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-244554">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-244554r1017354_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040286</xccdf:version>
          <xccdf:title>RHEL 8 must enable hardening for the Berkeley Packet Filter Just-in-time compiler.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Enabling hardening for the Berkeley Packet Filter (BPF) Just-in-time (JIT) compiler aids in mitigating JIT spraying attacks. Setting the value to "2" enables JIT hardening for all users.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-47786r858831_fix">Configure RHEL 8 to enable hardening for the BPF JIT compiler by adding the following line to a file, in the "/etc/sysctl.d" directory:

net.core.bpf_jit_harden = 2

Remove any configurations that conflict with the above from the following locations: 
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf
/etc/sysctl.d/*.conf

The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system</xccdf:fixtext>
          <xccdf:fix id="F-47786r858831_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:244554" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251706">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251706r1017359_rule" severity="high" weight="10.0">
          <xccdf:version>RHEL-08-010121</xccdf:version>
          <xccdf:title>The RHEL 8 operating system must not have accounts configured with blank or null passwords.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords should never be used in operational environments.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-55097r809341_fix">Configure all accounts on the system to have a password or lock the account with the following commands:

Perform a password reset:
$ sudo passwd [username]
Lock an account:
$ sudo passwd -l [username]</xccdf:fixtext>
          <xccdf:fix id="F-55097r809341_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251706" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251707">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251707r1017360_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010331</xccdf:version>
          <xccdf:title>RHEL 8 library directories must have mode 755 or less permissive.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-55098r809344_fix">Configure the library directories to be protected from unauthorized access. Run the following command, replacing "[DIRECTORY]" with any library directory with a mode more permissive than 755.

$ sudo chmod 755 [DIRECTORY]</xccdf:fixtext>
          <xccdf:fix id="F-55098r809344_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251707" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251708">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251708r1017362_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010341</xccdf:version>
          <xccdf:title>RHEL 8 library directories must be owned by root.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-55099r809347_fix">Configure the system-wide shared library directories within (/lib, /lib64, /usr/lib and /usr/lib64) to be protected from unauthorized access.

Run the following command, replacing "[DIRECTORY]" with any library directory not owned by "root".

$ sudo chown root [DIRECTORY]</xccdf:fixtext>
          <xccdf:fix id="F-55099r809347_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251708" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251709">
        <xccdf:title>SRG-OS-000259-GPOS-00100</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251709r1017364_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010351</xccdf:version>
          <xccdf:title>RHEL 8 library directories must be group-owned by root or a system account.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001499</xccdf:ident>
          <xccdf:fixtext fixref="F-55100r809350_fix">Configure the system-wide shared library directories (/lib, /lib64, /usr/lib and /usr/lib64) to be protected from unauthorized access.

Run the following command, replacing "[DIRECTORY]" with any library directory not group-owned by "root".

$ sudo chgrp root [DIRECTORY]</xccdf:fixtext>
          <xccdf:fix id="F-55100r809350_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251709" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251712">
        <xccdf:title>SRG-OS-000373-GPOS-00156</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251712r1050789_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-010385</xccdf:version>
          <xccdf:title>The RHEL 8 operating system must not be configured to bypass password requirements for privilege escalation.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Without re-authentication, users may access resources or perform tasks for which they do not have authorization. 

When operating systems provide the capability to escalate a functional capability, it is critical the user re-authenticate.

Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-002038</xccdf:ident>
          <xccdf:ident system="http://cyber.mil/cci">CCI-004895</xccdf:ident>
          <xccdf:fixtext fixref="F-55103r854082_fix">Configure the operating system to require users to supply a password for privilege escalation.

Check the configuration of the "/etc/ pam.d/sudo" file with the following command:
$ sudo vi /etc/pam.d/sudo

Remove any occurrences of "pam_succeed_if" in the file.</xccdf:fixtext>
          <xccdf:fix id="F-55103r854082_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251712" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251713">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251713r1017366_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020101</xccdf:version>
          <xccdf:title>RHEL 8 must ensure the password complexity module is enabled in the system-auth file.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

RHEL 8 uses "pwquality" as a mechanism to enforce password complexity. This is set in both:
/etc/pam.d/password-auth
/etc/pam.d/system-auth&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-55104r902739_fix">Configure the operating system to use "pwquality" to enforce password complexity rules.

Add the following line to the "/etc/pam.d/system-auth" file (or modify the line to have the required value):

     password requisite pam_pwquality.so</xccdf:fixtext>
          <xccdf:fix id="F-55104r902739_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251713" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251714">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251714r1017367_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020102</xccdf:version>
          <xccdf:title>RHEL 8 systems below version 8.4 must ensure the password complexity module in the system-auth file is configured for three retries or less.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

RHEL 8 uses "pwquality" as a mechanism to enforce password complexity. This is set in both:
/etc/pam.d/password-auth
/etc/pam.d/system-auth

By limiting the number of attempts to meet the pwquality module complexity requirements before returning with an error, the system will audit abnormal attempts at password changes.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-3_or_Lower" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-55105r902742_fix">Configure the operating system to limit the "pwquality" retry option to 3.

Add the following line to the "/etc/pam.d/system-auth" file (or modify the line to have the required value):

     password requisite pam_pwquality.so retry=3</xccdf:fixtext>
          <xccdf:fix id="F-55105r902742_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251714" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251715">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251715r1017368_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020103</xccdf:version>
          <xccdf:title>RHEL 8 systems below version 8.4 must ensure the password complexity module in the password-auth file is configured for three retries or less.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

RHEL 8 uses "pwquality" as a mechanism to enforce password complexity. This is set in both:
/etc/pam.d/password-auth
/etc/pam.d/system-auth

By limiting the number of attempts to meet the pwquality module complexity requirements before returning with an error, the system will audit abnormal attempts at password changes.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:platform idref="#xccdf_mil.disa.stig_platform_RHEL_8-3_or_Lower" />
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-55106r902745_fix">Configure the operating system to limit the "pwquality" retry option to 3.

Add the following line to the "/etc/pam.d/password-auth" file (or modify the line to have the required value):

     password requisite pam_pwquality.so retry=3</xccdf:fixtext>
          <xccdf:fix id="F-55106r902745_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251715" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-251718">
        <xccdf:title>SRG-OS-000480-GPOS-00227</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-251718r1017371_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-040321</xccdf:version>
          <xccdf:title>The graphical display manager must not be the default target on RHEL 8 unless approved.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Internet services that are not required for system or application processes must not be active to decrease the attack surface of the system. Graphical display managers have a long history of security vulnerabilities and must not be used, unless approved and documented.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-000366</xccdf:ident>
          <xccdf:fixtext fixref="F-55109r809377_fix">Document the requirement for a graphical user interface with the ISSO or reinstall the operating system without the graphical user interface. If reinstallation is not feasible, then continue with the following procedure:

Open an SSH session and enter the following commands:

$ sudo systemctl set-default multi-user.target

A reboot is required for the changes to take effect.</xccdf:fixtext>
          <xccdf:fix id="F-55109r809377_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:251718" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
      <xccdf:Group id="xccdf_mil.disa.stig_group_V-257258">
        <xccdf:title>SRG-OS-000163-GPOS-00072</xccdf:title>
        <xccdf:description>&lt;GroupDescription&gt;&lt;/GroupDescription&gt;</xccdf:description>
        <xccdf:Rule id="xccdf_mil.disa.stig_rule_SV-257258r1017375_rule" severity="medium" weight="10.0">
          <xccdf:version>RHEL-08-020035</xccdf:version>
          <xccdf:title>RHEL 8.7 and higher must terminate idle user sessions.</xccdf:title>
          <xccdf:description>&lt;VulnDiscussion&gt;Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&lt;/FalsePositives&gt;&lt;FalseNegatives&gt;&lt;/FalseNegatives&gt;&lt;Documentable&gt;false&lt;/Documentable&gt;&lt;Mitigations&gt;&lt;/Mitigations&gt;&lt;SeverityOverrideGuidance&gt;&lt;/SeverityOverrideGuidance&gt;&lt;PotentialImpacts&gt;&lt;/PotentialImpacts&gt;&lt;ThirdPartyTools&gt;&lt;/ThirdPartyTools&gt;&lt;MitigationControl&gt;&lt;/MitigationControl&gt;&lt;Responsibility&gt;&lt;/Responsibility&gt;&lt;IAControls&gt;&lt;/IAControls&gt;</xccdf:description>
          <xccdf:reference>
            <dc:title>DPMS Target Red Hat Enterprise Linux 8</dc:title>
            <dc:publisher>DISA</dc:publisher>
            <dc:type>DPMS Target</dc:type>
            <dc:subject>Red Hat Enterprise Linux 8</dc:subject>
            <dc:identifier>2921</dc:identifier>
          </xccdf:reference>
          <xccdf:ident system="http://cyber.mil/cci">CCI-001133</xccdf:ident>
          <xccdf:fixtext fixref="F-60884r1014792_fix">Configure RHEL 8 to log out idle sessions after 10 minutes by editing the /etc/systemd/logind.conf file with the following line:

StopIdleSessionSec=600

The "logind" service must be restarted for the changes to take effect. To restart the "logind" service, run the following command:

$ sudo systemctl restart systemd-logind</xccdf:fixtext>
          <xccdf:fix id="F-60884r1014792_fix" />
          <xccdf:check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <xccdf:check-content-ref href="U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" name="oval:mil.disa.stig.rhel8os:def:257258" />
          </xccdf:check>
        </xccdf:Rule>
      </xccdf:Group>
    </xccdf:Benchmark>
  </component>
  <component id="scap_mil.disa.stig_comp_U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-oval.xml" timestamp="2025-01-02T15:58:37.421-05:00">
    <oval_definitions xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" xmlns:oval="http://oval.mitre.org/XMLSchema/oval-common-5">
      <generator>
        <oval:product_name>Security Content Tool 1.2.0</oval:product_name>
        <oval:schema_version>5.11</oval:schema_version>
        <oval:timestamp>2025-01-02T03:58:37</oval:timestamp>
      </generator>
      <definitions>
        <definition id="oval:mil.disa.stig.defs:def:230221" version="2" class="compliance">
          <metadata>
            <title>The operating system must be a vendor-supported release.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23022100" comment="The RHEL 8 minor version is supported." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230223" version="1" class="compliance">
          <metadata>
            <title>The operating system must implement NIST FIPS-validated cryptography for the following: to provision digital signatures, to generate cryptographic hashes, and to protect data requiring data-at-rest protections in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23022300" comment="/proc/sys/crypto/fips_enabled is set to 1" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23022301" comment="/boot/grub2/grubenv:kernelopts contains fips=1" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230228" version="1" class="compliance">
          <metadata>
            <title>All the operating system remote access methods must be monitored.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23022800" comment="/etc/rsyslog.conf: auth.* is configured to be logged" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23022801" comment="/etc/rsyslog.conf: authpriv.* is configured to be logged" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23022802" comment="/etc/rsyslog.conf: daemon.* is configured to be logged" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230231" version="1" class="compliance">
          <metadata>
            <title>The operating system must encrypt all stored passwords with a FIPS 140-2 approved cryptographic hashing algorithm.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023100" comment="/etc/login.defs:ENCRYPT_METHOD &gt;= SHA512" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230232" version="1" class="compliance">
          <metadata>
            <title>The operating system must employ FIPS 140-2 approved cryptographic hashing algorithms for all stored passwords.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023200" comment="No active password hash in /etc/shadow has a prefix other than '$6'." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230233" version="4" class="compliance">
          <metadata>
            <title>The operating system shadow password suite must be configured to use a sufficient number of hashing rounds.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023300" comment="/etc/login.defs: SHA_CRYPT_MIN_ROUNDS, if set, is set to 100000 or greater" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023301" comment="/etc/login.defs: SHA_CRYPT_MAX_ROUNDS, if set, is set to 100000 or greater" />
            <criteria operator="OR">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23023302" comment="/etc/login.defs: SHA_CRYPT_MIN_ROUNDS is set" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23023303" comment="/etc/login.defs: SHA_CRYPT_MAX_ROUNDS is set" />
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230234" version="2" class="compliance">
          <metadata>
            <title>Operating systems booted with United Extensible Firmware Interface (UEFI) implemented must require authentication upon booting into single-user mode and maintenance.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023400" comment="/boot/efi/EFI/redhat/grub.cfg:superusers exists and has a name." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023401" comment="/boot/efi/EFI/redhat/user.cfg:GRUB2_PASSWORD exists and has a PBKDF2/SHA512 password assigned." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230235" version="1" class="compliance">
          <metadata>
            <title>The operating system operating systems booted with a BIOS must require authentication upon booting into single-user and maintenance modes.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023500" comment="/boot/grub2/grub.cfg:superusers exists and has a name." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023501" comment="/boot/grub2/user.cfg:GRUB2_PASSWORD exists and has a PBKDF2/SHA512 password assigned." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230236" version="1" class="compliance">
          <metadata>
            <title>The operating system operating systems must require authentication upon booting into rescue mode.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023600" comment="/usr/lib/systemd/system/rescue.service:ExecStart is set to -/usr/lib/systemd/systemd-sulogin-shell rescue" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230237" version="1" class="compliance">
          <metadata>
            <title>The operating system pam_unix.so module must be configured in the password-auth file to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23023700" comment="/etc/pam.d/password-auth:password includes pam_unix.so sha512" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230238" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent system daemons from using Kerberos for authentication.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23023800" comment="/etc/*.keytab does not exist." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230239" version="2" class="compliance">
          <metadata>
            <title>The krb5-workstation package must not be installed on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23023900" comment="package krb5-workstation is not installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230240" version="3" class="compliance">
          <metadata>
            <title>The operating system must use a Linux Security Module configured to enforce limits on system services.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23024000" comment="selinux is active" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23024000" comment="selinux is enforcing" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23024001" comment="/etc/selinux/config:SELINUX=enforcing" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230241" version="1" class="compliance">
          <metadata>
            <title>The operating system must have policycoreutils package installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23024100" comment="package policycoreutils is installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230244" version="1" class="compliance">
          <metadata>
            <title>The operating system must be configured so that all network connections associated with SSH traffic are terminated at the end of the session or after 10 minutes of inactivity, except to fulfill documented and validated mission requirements.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23024400" comment="/etc/ssh/sshd_config:ClientAliveCountMax = 1" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230245" version="1" class="compliance">
          <metadata>
            <title>The operating system /var/log/messages file must have mode 0640 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23024500" comment="/var/log/messages file has mode 0640 or less permissive" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230246" version="1" class="compliance">
          <metadata>
            <title>The operating system /var/log/messages file must be owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23024600" comment="/var/log/messages file is owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230247" version="1" class="compliance">
          <metadata>
            <title>The operating system /var/log/messages file must be group-owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23024700" comment="/var/log/messages file is owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230248" version="1" class="compliance">
          <metadata>
            <title>The operating system /var/log directory must have mode 0755 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23024800" comment="/var/log directory has mode 0755 or less permissive." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230249" version="1" class="compliance">
          <metadata>
            <title>The operating system /var/log directory must be owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23024900" comment="/var/log directory is owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230250" version="1" class="compliance">
          <metadata>
            <title>The operating system /var/log directory must be group-owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23025000" comment="/var/log directory is group-owned by root." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230253" version="1" class="compliance">
          <metadata>
            <title>The operating system must ensure the SSH server uses strong entropy.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23025300" comment="/etc/sysconfig/sshd: SSH_USE_STRONG_RNG=32" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230255" version="1" class="compliance">
          <metadata>
            <title>The operating system operating system must implement DoD-approved TLS encryption in the OpenSSL package.</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <criteria operator="AND" comment="If crypto-policies is older than version 20210617, then MinProtocol = TLSv1.2 or TLSv1.3.">
              <criterion test_ref="oval:mil.disa.stig.linux:tst:23025500" negate="true" comment="The package crypto-policies is not version 20210617 or newer" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23025501" comment="/etc/crypto-policies/back-ends/opensslcnf.config: MinProtocol = TLSv1.2 or newer." />
            </criteria>
            <criteria operator="AND" comment="If crypto-policies is version 20210617 or newer, then TLS.MinProtocol = TLSv1.2 or TLSv1.3 and DTLS.MinProtocol = DLSv1.2 or DTLSv1.3">
              <criterion test_ref="oval:mil.disa.stig.linux:tst:23025500" comment="The package crypto-policies is version 20210617 or newer" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23025502" comment="/etc/crypto-policies/back-ends/opensslcnf.config: TLS.MinProtocol = TLSv1.2 or newer." />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23025503" comment="/etc/crypto-policies/back-ends/opensslcnf.config: DTLS.MinProtocol = DTLSv1.2 or newer." />
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230257" version="1" class="compliance">
          <metadata>
            <title>The operating system system commands must have mode 755 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23025700" comment="System command files have mode 755 or less permissive" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230258" version="2" class="compliance">
          <metadata>
            <title>The operating system system commands must be owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23025800" comment="System command files are owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230259" version="1" class="compliance">
          <metadata>
            <title>The operating system system commands must be group-owned by root or a system account.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23025900" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230260" version="2" class="compliance">
          <metadata>
            <title>The operating system library files must have mode 755 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23026003" />
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23026004" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230261" version="1" class="compliance">
          <metadata>
            <title>The operating system library files must be owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23026100" comment="The operating system library files are owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230262" version="2" class="compliance">
          <metadata>
            <title>The operating system library files must be group-owned by root or a system account.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23026200" comment="All system-wide library files must be group-owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230264" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent the installation of software, patches, service packs, device drivers, or operating system components from a repository without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23026400" comment="Every /etc/yum.repos.d/*.repo:[{reponame}] has a gpgcheck entry set to 1." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23026401" comment="No /etc/yum.repos.d/*.repo:[{reponame}] has a gpgcheck entry set to 0." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230265" version="2" class="compliance">
          <metadata>
            <title>The operating system must prevent the installation of software, patches, service packs, device drivers, or operating system components of local packages without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23026500" comment="/etc/dnf/dnf.conf: localpkg_gpgcheck is set to True, 1, or yes." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230266" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent the loading of a new kernel for later execution.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23026600" comment="kernel.kexec_load_disabled setting in kernel is 1" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23026601" comment="kernel.kexec_load_disabled setting in sysctl configuration files is set to 1, and nothing else" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230267" version="1" class="compliance">
          <metadata>
            <title>The operating system must enable kernel parameters to enforce discretionary access control on symlinks.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23026700" comment="fs.protected_symlinks setting in kernel is 1" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23026701" comment="fs.protected_symlinks setting in sysctl configuration files is set to 1, and nothing else, and there are no conflicting settings in other files" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230268" version="1" class="compliance">
          <metadata>
            <title>The operating system must enable kernel parameters to enforce discretionary access control on hardlinks.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23026800" comment="fs.protected_hardlinks setting in kernel is 1" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23026801" comment="fs.protected_hardlinks setting in sysctl configuration files is set to 1, and nothing else, and there are no conflicting settings in other files" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230269" version="2" class="compliance">
          <metadata>
            <title>The operating system must restrict access to the kernel message buffer.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23026900" comment="kernel.dmesg_restrict setting in kernel is 1" />
            <criteria operator="OR">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23026900" comment="kernel.dmesg_restrict setting in admin sysctl configuration files is set to 1" />
              <criteria operator="AND">
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23026901" comment="kernel.dmesg_restrict setting in admin sysctl configuration files is missing" />
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23026902" comment="kernel.dmesg_restrict setting in system sysctl configuration files is set to 1" />
              </criteria>
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230270" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent kernel profiling by unprivileged users.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23027000" comment="kernel.perf_event_paranoid setting in kernel is 2" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027001" comment="kernel.perf_event_paranoid setting in sysctl configuration files is set to 2, and nothing else, and there are no conflicting settings in other files" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230271" version="1" class="compliance">
          <metadata>
            <title>The operating system must require users to provide a password for privilege escalation.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027100" comment="'NOPASSWD' does not exist in /etc/sudoers" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027101" comment="'NOPASSWD' does not exist in /etc/sudoers.d" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230272" version="1" class="compliance">
          <metadata>
            <title>The operating system must require users to reauthenticate for privilege escalation.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027200" comment="'!authenticate' does not exist in /etc/sudoers" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027201" comment="'!authenticate' does not exist in /etc/sudoers.d" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230273" version="1" class="compliance">
          <metadata>
            <title>The operating system must have the packages required for multifactor authentication installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23027300" comment="package openssl-pkcs11 is installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230277" version="1" class="compliance">
          <metadata>
            <title>The operating system must clear the page allocator to prevent use-after-free attacks.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25779300" comment="BLS options contain page_poison=1" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25779301" comment="/etc/default/grub page_poison=1" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230278" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable virtual syscalls.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027800" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027801" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230279" version="1" class="compliance">
          <metadata>
            <title>The operating system must clear SLUB/SLAB objects to prevent use-after-free attacks.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027900" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23027901" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230280" version="1" class="compliance">
          <metadata>
            <title>The operating system must implement address space layout randomization (ASLR) to protect its memory from unauthorized code execution.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23028000" comment="kernel.randomize_va_space setting in kernel is 2" />
            <criteria operator="OR">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23028000" comment="kernel.randomize_va_space setting in admin sysctl configuration files is set to 2" />
              <criteria operator="AND">
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23028001" comment="kernel.randomize_va_space setting in admin sysctl configuration files is missing" />
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23028002" comment="kernel.randomize_va_space setting in system sysctl configuration files is set to 2" />
              </criteria>
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230281" version="1" class="compliance">
          <metadata>
            <title>YUM must remove all software components after updated versions have been installed on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23028100" comment="/etc/dnf/dnf.conf: clean_requirements_on_remove is set to True, 1 or yes" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230282" version="2" class="compliance">
          <metadata>
            <title>The operating system must enable the SELinux targeted policy.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23024000" comment="selinux is active" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23028200" comment="/etc/selinux/config: SELINUXTYPE=targeted" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230283" version="1" class="compliance">
          <metadata>
            <title>There must be no shosts.equiv files on the operating system operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23028300" comment="There must be no shosts.equiv files on the system." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230284" version="1" class="compliance">
          <metadata>
            <title>There must be no .shosts files on the operating system operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23028400" comment="There are no .shosts files on the system." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230286" version="1" class="compliance">
          <metadata>
            <title>The operating system SSH public host key files must have mode 0644 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23028600" comment="The SSH daemon public host key files have mode 0644 or less permissive" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230287" version="1" class="compliance">
          <metadata>
            <title>The operating system SSH private host key files must have mode 0640 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23028700" comment="SSH private key files mode 640 or less permissive" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230288" version="2" class="compliance">
          <metadata>
            <title>The operating system SSH daemon must perform strict mode checking of home directory configuration files.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23028800" comment="/etc/ssh/sshd_config or /etc/ssh/sshd_config.d/*:StrictModes == yes" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230290" version="1" class="compliance">
          <metadata>
            <title>The operating system SSH daemon must not allow authentication using known host’s authentication.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23029000" comment="/etc/ssh/sshd_config:IgnoreUserKnownHosts == yes" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230291" version="1" class="compliance">
          <metadata>
            <title>The operating system SSH daemon must not allow Kerberos authentication, except to fulfill documented and validated mission requirements.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23029100" comment="/etc/ssh/sshd_config:KerberosAuthentication == no" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230292" version="1" class="compliance">
          <metadata>
            <title>The operating system must use a separate file system for /var.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23029200" comment="There is a separate file system for /var" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23029201" comment="There is a separate file system configured for /var" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230293" version="1" class="compliance">
          <metadata>
            <title>The operating system must use a separate file system for /var/log.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23029300" comment="There is a separate file system for /var/log." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23029301" comment="There is a separate file system configured for /var/log." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230294" version="1" class="compliance">
          <metadata>
            <title>The operating system must use a separate file system for the system audit data path.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23029400" comment="There is a separate file system for audit data directory." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23029401" comment="There is a separate file system configured for audit data directory." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230295" version="2" class="compliance">
          <metadata>
            <title>A separate the operating system filesystem must be used for the /tmp directory.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23029500" comment="There is a separate file system for /tmp." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23029500" comment="There is a separate file system configured for /tmp." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230296" version="1" class="compliance">
          <metadata>
            <title>The operating system must not permit direct logons to the root account using remote access via SSH.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23029600" comment="/etc/ssh/sshd_config:PermitRootLogin == no" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230298" version="2" class="compliance">
          <metadata>
            <title>The rsyslog service must be running in the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23835301" comment="rsyslog is enabled" />
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25814200" comment="rsyslog is active" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230299" version="2" class="compliance">
          <metadata>
            <title>The operating system must prevent files with the setuid and setgid bit set from being executed on file systems that contain user home directories.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23029900" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230300" version="2" class="compliance">
          <metadata>
            <title>The operating system must prevent files with the setuid and setgid bit set from being executed on the /boot directory.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23030000" comment="/boot is mounted an configured with the nosuid option." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23030001" comment="If /boot is configured in /etc/fstab it is with the nosuid option." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230301" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent special devices on non-root local partitions.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23030100" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23030101" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230306" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent code from being executed on file systems that are imported via Network File System (NFS).</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23030600" comment="remote nfs filesystems in /etc/fstab have noexec" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23030601" comment="actual nfs mounts have noexec" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230311" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable the kernel.core_pattern.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23031100" comment="kernel.core_pattern setting in kernel is |/bin/false" />
            <criteria operator="OR">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23031100" comment="kernel.core_pattern setting in admin sysctl configuration files is set to |/bin/false" />
              <criteria operator="AND">
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23031101" comment="kernel.core_pattern setting in admin sysctl configuration files is missing" />
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23031102" comment="kernel.core_pattern setting in system sysctl configuration files is set to |/bin/false" />
              </criteria>
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230312" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable acquiring, saving, and processing core dumps.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23031200" comment="systemd-coredump.socket LoadState is masked if exists" />
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23031201" comment="systemd-coredump.socket UnitFileState is masked if exists" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230313" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable core dumps for all users.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23031300" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23031301" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230314" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable storing core dumps.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23031400" comment="/usr/systemd/coredump.conf:Storage is set to none." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230315" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable core dump backtraces.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23031500" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230316" version="2" class="compliance">
          <metadata>
            <title>For Systems using Domain Name Servers (DNS) resolution, at least two name servers must be configured.</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23031600" negate="true" comment="The system is not using DNS" />
            <criteria operator="AND">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23031600" comment="The system is using DNS" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23031602" comment="/etc/resolv.conf contains at least one nameserver entry" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23031601" comment="/etc/resolv.conf is configured with at least two name servers" />
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230324" version="1" class="compliance">
          <metadata>
            <title>All the operating system local interactive user accounts must be assigned a home directory upon creation.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23032400" comment="All local interactive user accounts are assigned a home directory upon creation" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230325" version="1" class="compliance">
          <metadata>
            <title>All the operating system local initialization files must have mode 0740 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23032500" />
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23032501" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230328" version="1" class="compliance">
          <metadata>
            <title>A separate operating system filesystem must be used for user home directories (such as /home or an equivalent).</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23032800" comment="A separate operating system filesystem is used for user home directories" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230329" version="1" class="compliance">
          <metadata>
            <title>Unattended or automatic logon via the operating system graphical user interface must not be allowed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23032900" comment="AutomaticLoginEnable is set to false" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230330" version="6" class="compliance">
          <metadata>
            <title>The operating system must not allow users to override SSH environment variables.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033000" comment="Check to see if PermitUserEnvironment is set to no in /etc/ssh/sshd_config and /etc/ssh/sshd_config.d/*.conf" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230332" version="3" class="compliance">
          <metadata>
            <title>The operating system must automatically lock an account when three unsuccessful logon attempts occur</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033200" comment="deny is set to 3 or less but not 0 in /etc/pam.d/system-auth" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033201" comment="deny is set to 3 or less but not 0 in /etc/pam.d/password-auth" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230333" version="1" class="compliance">
          <metadata>
            <title>The operating system must automatically lock an account when three unsuccessful logon attempts occur.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033300" comment="deny is set to 3 or less but not 0 in /etc/security/faillock.conf" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230334" version="3" class="compliance">
          <metadata>
            <title>Operating systems must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033400" comment="pam_faillock.so fail_interval &lt;= 900 and !=0 in system-auth" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033401" comment="pam_faillock.so fail_interval &lt;= 900 and !=0 in password-auth" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230335" version="2" class="compliance">
          <metadata>
            <title>The operating system must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033500" comment="/etc/security/faillock.conf:fail_interval &lt;=900 and !=0" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230336" version="2" class="compliance">
          <metadata>
            <title>The operating system must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033600" comment="pam_faillock.so preauth unlock_time value set to 0 in system-auth" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033601" comment="pam_faillock.so preauth unlock_time value set to 0 in password-auth" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033602" comment="pam_faillock.so authfail unlock_time value set to 0 in system-auth" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033603" comment="pam_faillock.so authfail unlock_time value set to 0 in password-auth" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230337" version="1" class="compliance">
          <metadata>
            <title>The operating system must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23033700" comment="unlock_time is set to 0 in /etc/security/faillock.conf" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230340" version="2" class="compliance">
          <metadata>
            <title>The operating system must prevent system messages from being presented when three unsuccessful logon attempts occur</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034000" comment="pam_faillock.so preauth silent is in system-auth" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034001" comment="pam_faillock.so preauth silent is in password-auth" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230341" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent system messages from being presented when three unsuccessful logon attempts occur.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034100" comment="silent is set in /etc/security/faillock.conf" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230342" version="2" class="compliance">
          <metadata>
            <title>The operating system must log user name information when unsuccessful logon attempts occur</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034200" comment="pam_faillock.so preauth audit is in system-auth" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034201" comment="pam_faillock.so preauth audit is in password-auth" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230343" version="1" class="compliance">
          <metadata>
            <title>The operating system must log user name information when unsuccessful logon attempts occur.</title>
            <description />
          </metadata>
          <criteria comment="/etc/security/faillock.conf has audit configured">
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034300" comment="audit is set in /etc/security/faillock.conf" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230344" version="2" class="compliance">
          <metadata>
            <title>The operating system must include root when automatically locking an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034400" comment="pam_faillock.so preauth even_deny_root is in system-auth" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034401" comment="pam_faillock.so preauth even_deny_root is in password-auth" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230345" version="1" class="compliance">
          <metadata>
            <title>The operating system must include root when automatically locking an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:230345" comment="check /etc/security/faillock.conf for the even_deny_root setting" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230346" version="1" class="compliance">
          <metadata>
            <title>The operating system must limit the number of concurrent sessions to ten for all accounts and/or account types.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034600" comment="limits.conf and limits.d/*.conf:maxlogins is set to 10 or less by default" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23034601" comment="limits.conf and limits.d/*.conf:maxlogins is set to 10 or less for non-default domains" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230351" version="1" class="compliance">
          <metadata>
            <title>The operating system must be able to initiate directly a session lock for all connection types using smartcard when the smartcard is removed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23035100" comment="/proc/sys/crypto/fips_enabled is set to 1" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230356" version="1" class="compliance">
          <metadata>
            <title>The operating system must ensure the password complexity module is enabled in the password-auth file.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23035600" comment="The pam_pwquality module is included in password-auth." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230357" version="1" class="compliance">
          <metadata>
            <title>The operating system must enforce password complexity by requiring that at least one uppercase character be used.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23035700" comment="at least one uppercase character is required" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230358" version="1" class="compliance">
          <metadata>
            <title>The operating system must enforce password complexity by requiring that at least one lower-case character be used.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23035800" comment="at least one lowercase character is required" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230359" version="1" class="compliance">
          <metadata>
            <title>The operating system must enforce password complexity by requiring that at least one numeric character be used.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23035900" comment="at least one numeric character is required" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230360" version="1" class="compliance">
          <metadata>
            <title>The operating system must require the maximum number of repeating characters of the same character class be limited to four when passwords are changed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23036000" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230361" version="1" class="compliance">
          <metadata>
            <title>The operating system must require the maximum number of repeating characters be limited to three when passwords are changed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23036100" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230362" version="1" class="compliance">
          <metadata>
            <title>The operating system must require the change of at least four character classes when passwords are changed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23036200" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230363" version="1" class="compliance">
          <metadata>
            <title>The operating system must require the change of at least 8 characters when passwords are changed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23036300" comment="at least 8 characters must change when passwords are changed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230364" version="1" class="compliance">
          <metadata>
            <title>The operating system passwords must have a 24 hours/1 day minimum password lifetime restriction in /etc/shadow.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23036400" comment="Root does not have a minimum password age of 0 or blank" />
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23036401" comment="Non-system users do not have a minimum password age of 0 or blank" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230365" version="1" class="compliance">
          <metadata>
            <title>The operating system passwords for new users or password changes must have a 24 hours/1 day minimum password lifetime restriction in /etc/login.defs.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23036500" comment="/etc/login.defs:PASS_MIN_DAYS &gt;= 1" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230366" version="1" class="compliance">
          <metadata>
            <title>The operating system user account passwords must have a 60-day maximum password lifetime restriction.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23036600" comment="0 -lt /etc/login.defs:PASS_MAX_DAYS -le 60" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230367" version="1" class="compliance">
          <metadata>
            <title>The operating system user account passwords must be configured so that existing passwords are restricted to a 60-day maximum lifetime.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23036700" comment="No password in /etc/shadow has a maximum password age of 0 or greater than 60" />
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23036701" comment="Root password in /etc/shadow does not have a maximum password age of 0 or greater than 60" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230369" version="1" class="compliance">
          <metadata>
            <title>The operating system passwords must have a minimum of 15 characters.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23036900" comment="passwords must have a minimum of 15 characters" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230370" version="1" class="compliance">
          <metadata>
            <title>The operating system passwords for new users must have a minimum of 15 characters.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23037000" comment="/etc/login.defs: PASS_MIN_LEN = 15 or greater" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230373" version="1" class="compliance">
          <metadata>
            <title>The operating system account identifiers (individuals, groups, roles, and devices) must be disabled after 35 days of inactivity.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23037300" comment="/etc/default/useradd: INACTIVE is set to 35 or less, but not -1" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230375" version="1" class="compliance">
          <metadata>
            <title>All the operating system passwords must contain at least one special character.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23037500" comment="Passwords contain at least one special character" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230376" version="2" class="compliance">
          <metadata>
            <title>The operating system must prohibit the use of cached authentications after one day.</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23037600" comment="/etc/sssd/sssd.conf:cache_credentials = true does not exist" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23037602" comment="/etc/sssd/sssd.conf:offline_credentials_expiration = 1" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230377" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent the use of dictionary words for passwords.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23037700" comment="passwords must not be dictionary words" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230378" version="1" class="compliance">
          <metadata>
            <title>The operating system must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23037800" comment="/etc/login.defs: FAIL_DELAY = 4 or greater" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230380" version="2" class="compliance">
          <metadata>
            <title>The operating system must not allow accounts configured with blank or null passwords.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038000" comment="The PermitEmptyPasswords option is not set to yes in /etc/ssh/sshd_config." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230381" version="3" class="compliance">
          <metadata>
            <title>The operating system must display the date and time of the last successful account logon upon logon.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038100" comment="pam_lastlog is configured to show last successful logon" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038101" comment="pam_lastlog is not used with the silent option" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230382" version="1" class="compliance">
          <metadata>
            <title>The operating system must display the date and time of the last successful account logon upon an SSH logon.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038200" comment="/etc/ssh/sshd_config:PrintLastLog == yes" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230383" version="1" class="compliance">
          <metadata>
            <title>The operating system must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038300" comment="/etc/login.defs:UMASK == 077" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230386" version="1" class="compliance">
          <metadata>
            <title>The operating system audit system must be configured to audit the execution of privileged functions and prevent all software from executing at higher privilege levels than users executing the software.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038600" comment="Audit 32-bit invocations of execve syscall comparing uids" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038601" comment="Audit 64-bit invocations of execve syscall comparing uids" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038602" comment="Audit 32-bit invocations of execve syscall comparing gids" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038603" comment="Audit 64-bit invocations of execve syscall comparing gids" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230388" version="1" class="compliance">
          <metadata>
            <title>The operating system System Administrator (SA) and Information System Security Officer (ISSO) (at a minimum) must be alerted of an audit processing failure event.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038800" comment="/etc/audit/auditd.conf: action_mail_acct = root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230389" version="1" class="compliance">
          <metadata>
            <title>The operating system Information System Security Officer (ISSO) and System Administrator (SA) (at a minimum) must have mail aliases to be notified of an audit processing failure.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23038900" comment="/etc/aliases contains 'postmaster: root'" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230390" version="1" class="compliance">
          <metadata>
            <title>The operating system System must take appropriate action when an audit processing failure occurs.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23039000" comment="/etc/audit/auditd.conf: disk_error_action = SYSLOG, SINGLE, or HALT" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230392" version="1" class="compliance">
          <metadata>
            <title>The operating system audit system must take appropriate action when the audit storage volume is full.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23039200" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230393" version="1" class="compliance">
          <metadata>
            <title>The operating system audit system must audit local events.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23039300" comment="/etc/audit/auditd.conf: local_events = yes" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230394" version="1" class="compliance">
          <metadata>
            <title>The operating system must label all off-loaded audit logs before sending them to the central log server.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23039400" comment="/etc/audit/auditd.conf: name_format = hostname, fqd or numeric" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230395" version="2" class="compliance">
          <metadata>
            <title>The operating system must resolve audit information before writing to disk.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23039500" comment="/etc/audit/auditd.conf: log_format = enriched" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230396" version="1" class="compliance">
          <metadata>
            <title>The operating system audit logs must have a mode of 0600 or less permissive to prevent unauthorized read access.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23039600" comment="Audit log is mode 0600 or less permissive" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230397" version="1" class="compliance">
          <metadata>
            <title>The operating system audit logs must be owned by root to prevent unauthorized read access.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23039700" comment="audit logs are owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230398" version="1" class="compliance">
          <metadata>
            <title>The operating system audit logs must be group-owned by root to prevent unauthorized read access.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23039800" comment="audit logs are group-owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230399" version="1" class="compliance">
          <metadata>
            <title>The operating system audit log directory must be owned by root to prevent unauthorized read access.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23039900" comment="audit log directories are owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230400" version="1" class="compliance">
          <metadata>
            <title>The operating system audit log directory must be group-owned by root to prevent unauthorized read access.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23040000" comment="audit log directories are group-owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230401" version="1" class="compliance">
          <metadata>
            <title>The operating system audit log directory must have a mode of 0700 or less permissive to prevent unauthorized read access.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23040100" comment="audit log directory has a mode of 0700 or less permissive" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230402" version="1" class="compliance">
          <metadata>
            <title>The operating system audit system must protect auditing rules from unauthorized change.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23040200" comment="/etc/audit/audit.rules: -e 2 option is present and is the last line in the file" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230403" version="1" class="compliance">
          <metadata>
            <title>The operating system audit system must protect logon UIDs from unauthorized change.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23040300" comment="/etc/audit/audit.rules: --loginuid-immutable option is present" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230404" version="1" class="compliance">
          <metadata>
            <title>The operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23040400" comment="Events resulting in modifications to /etc/shadow are audited" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230405" version="1" class="compliance">
          <metadata>
            <title>The operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/security/opasswd.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23040500" comment="Audit modifications to /etc/security/opasswd" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230406" version="1" class="compliance">
          <metadata>
            <title>The operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/passwd.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23040600" comment="Audit modifications to /etc/passwd" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230407" version="1" class="compliance">
          <metadata>
            <title>The operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/gshadow.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23040700" comment="Audit modifications to /etc/gshadow" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230408" version="1" class="compliance">
          <metadata>
            <title>The operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/group.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23040800" comment="Audit modifications to /etc/group" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230409" version="1" class="compliance">
          <metadata>
            <title>The operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/sudoers.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23040900" comment="Audit modifications to /etc/sudoers" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230410" version="1" class="compliance">
          <metadata>
            <title>The operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/sudoers.d/.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23041000" comment="Audit modifications to /etc/sudoers.d/" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230411" version="1" class="compliance">
          <metadata>
            <title>The operating system audit package must be installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23041100" comment="package audit is installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230412" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the su command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23041200" comment="Audit invocations of /usr/bin/su" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230413" version="1" class="compliance">
          <metadata>
            <title>The operating system audit system must be configured to audit any usage of the setxattr, fsetxattr, lsetxattr, removexattr, fremovexattr, and lremovexattr system calls.</title>
            <description />
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:253034" comment="Audit fsetxattr" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:253035" comment="Audit lsetxattr" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:253036" comment="Audit fremovexattr" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:253037" comment="Audit lremovexattr" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:253038" comment="Audit removexattr" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23041300" comment="Audit 32-bit invocations of setxattr syscall (auid&gt;=1000)" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23041301" comment="Audit 64-bit invocations of setxattr syscall (auid&gt;=1000)" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23041302" comment="Audit 32-bit invocations of setxattr syscall (auid=0)" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23041303" comment="Audit 64-bit invocations of setxattr syscall (auid=0)" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230418" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the chage command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23041800" comment="Audit invocations of /usr/bin/chage" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230419" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the chcon command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23041900" comment="Audit invocations of /usr/bin/chcon" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230421" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the ssh-agent in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042100" comment="Audit invocations of /usr/bin/ssh-agent" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230422" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the passwd command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042200" comment="Audit invocations of /usr/bin/passwd" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230423" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the mount command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042300" comment="Audit executions of /usr/bin/mount" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230424" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the umount command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042400" comment="Audit invocations of /usr/bin/umount" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230425" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the mount syscall in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042500" comment="Audit 32-bit invocations of mount syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042501" comment="Audit 64-bit invocations of mount syscall" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230426" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the unix_update in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042600" comment="Audit invocations of /usr/sbin/unix_update" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230427" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of postdrop in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042700" comment="Audit invocations of /usr/sbin/postdrop" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230428" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of postqueue in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042800" comment="Audit invocations of /usr/sbin/postqueue" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230429" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of semanage in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23042900" comment="Audit invocations of /usr/sbin/semanage" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230430" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of setfiles in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043000" comment="Audit invocations of /usr/sbin/setfiles" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230431" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of userhelper in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043100" comment="Audit invocations of /usr/sbin/userhelper" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230432" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of setsebool in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043200" comment="Audit invocations of /usr/sbin/setsebool" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230433" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of unix_chkpwd in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043300" comment="Audit invocations of /usr/sbin/unix_chkpwd" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230434" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the ssh-keysign in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043400" comment="Audit invocations of /usr/libexec/openssh/ssh-keysign" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230435" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the setfacl command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043500" comment="Audit invocations of /usr/bin/setfacl" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230436" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the pam_timestamp_check command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043600" comment="Audit invocations of /usr/sbin/pam_timestamp_check" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230437" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the newgrp command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043700" comment="Audit invocations of /usr/bin/newgrp" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230438" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the init_module and finit_module system calls in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043800" comment="Audit 32-bit invocations of init_module syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043801" comment="Audit 64-bit invocations of init_module syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043802" comment="Audit 32-bit invocations of finit_module syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23043803" comment="Audit 64-bit invocations of finit_module syscall" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230439" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the rename, unlink, rmdir, renameat, and unlinkat system calls in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:252997" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:252998" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:252999" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:253000" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:253001" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230444" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the gpasswd command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044400" comment="Audit invocations of /usr/bin/gpasswd" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230446" version="2" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the delete_module command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044600" comment="Audit 32-bit invocations of delete_module syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044601" comment="Audit 64-bit invocations of delete_module syscall" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230447" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the crontab command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044700" comment="Audit invocations of /usr/bin/crontab" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230448" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the chsh command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044800" comment="Audit invocations of /usr/bin/chsh" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230449" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the truncate, ftruncate, creat, open, openat, and open_by_handle_at system calls in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044900" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044901" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044902" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044903" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044904" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044905" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044906" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044907" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044908" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044909" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044910" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044911" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044912" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044913" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044914" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044915" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044916" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044917" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044918" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044919" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044920" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044921" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044922" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23044923" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230455" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the chown, fchown, fchownat, and lchown system calls in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045500" comment="Audit 32-bit invocations of chown syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045501" comment="Audit 64-bit invocations of chown syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045502" comment="Audit 32-bit invocations of lchown syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045503" comment="Audit 64-bit invocations of lchown syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045504" comment="Audit 32-bit invocations of fchownat syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045505" comment="Audit 64-bit invocations of fchownat syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045506" comment="Audit 32-bit invocations of fchown syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045507" comment="Audit 64-bit invocations of fchown syscall" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230456" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the chmod, fchmod, and fchmodat system calls in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045600" comment="Audit 32-bit invocations of chmod syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045601" comment="Audit 64-bit invocations of chmod syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045602" comment="Audit 32-bit invocations of fchmod syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045603" comment="Audit 64-bit invocations of fchmod syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045604" comment="Audit 32-bit invocations of fchmodat syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23045605" comment="Audit 64-bit invocations of fchmodat syscall" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230462" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the sudo command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046200" comment="Invocations of /usr/bin/sudo are audited" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230463" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the usermod command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046300" comment="Audit invocations of /usr/sbin/usermod" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230464" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the chacl command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046400" comment="Audit invocations of /usr/bin/chacl" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230465" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the kmod command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046500" comment="Audit invocations of /usr/bin/kmod" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230467" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful modifications to the lastlog file in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046700" comment="Audit modifications to /var/log/lastlog" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230468" version="1" class="compliance">
          <metadata>
            <title>The operating system must enable auditing of processes that start prior to the audit daemon.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046800" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046801" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230469" version="1" class="compliance">
          <metadata>
            <title>The operating system must allocate an audit_backlog_limit of sufficient size to capture processes that start prior to the audit daemon.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046900" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23046901" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230471" version="1" class="compliance">
          <metadata>
            <title>The operating system must allow only the Information System Security Manager (ISSM) (or individuals or roles appointed by the ISSM) to select which auditable events are to be audited.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23047100" comment="/etc/audit/auditd.conf has mode 0640 or less permissive" />
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23047101" comment=".rules files in /etc/audit/rules.d have mode 0640 or less permissive" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230472" version="1" class="compliance">
          <metadata>
            <title>The operating system audit tools must have a mode of 0755 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23047200" comment="audit tools have a mode of 0755 or less permissive." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230473" version="1" class="compliance">
          <metadata>
            <title>The operating system audit tools must be owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23047300" comment="audit tools are owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230474" version="1" class="compliance">
          <metadata>
            <title>The operating system audit tools must be group-owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23047400" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230477" version="1" class="compliance">
          <metadata>
            <title>The operating system must have the packages required for offloading audit logs installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23047700" comment="The rsyslog package is installed." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230478" version="1" class="compliance">
          <metadata>
            <title>The operating system must have the packages required for encrypting offloaded audit logs installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23047800" comment="package rsyslog-gnutls is installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230480" version="1" class="compliance">
          <metadata>
            <title>The operating system must take appropriate action when the internal event queue is full.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23048000" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230483" version="1" class="compliance">
          <metadata>
            <title>The operating system must take action when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23048300" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230485" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable the chrony daemon from acting as a server.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23048500" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230486" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable network management of the chrony daemon.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23048600" comment="/etc/chrony.conf: cmdport option is set to 0" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230487" version="1" class="compliance">
          <metadata>
            <title>The operating system must not have the telnet-server package installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23048700" comment="package telnet-server is not installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230488" version="1" class="compliance">
          <metadata>
            <title>The operating system must not have any automated bug reporting tools installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23048800" comment="The package abrt and any related packages are NOT installed." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230489" version="1" class="compliance">
          <metadata>
            <title>The operating system must not have the sendmail package installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23048900" comment="package sendmail is not installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230491" version="1" class="compliance">
          <metadata>
            <title>The operating system must enable mitigations against processor-based vulnerabilities.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049100" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049101" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230492" version="1" class="compliance">
          <metadata>
            <title>The operating system must not have the rsh-server package installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23049200" comment="The rsh-server package is absent." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230494" version="2" class="compliance">
          <metadata>
            <title>The operating system must disable the asynchronous transfer mode (ATM) protocol.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049400" comment="/etc/modprobe.d contains a file that contains 'install atm /bin/false'" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049401" comment="/etc/modprobe.d contains a file that contains 'blacklist atm'" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230495" version="2" class="compliance">
          <metadata>
            <title>The operating system must disable the controller area network (CAN) protocol.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049500" comment="/etc/modprobe.d contains a file that contains 'install can /bin/false'" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049501" comment="/etc/modprobe.d contains a file that contains 'blacklist can'" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230496" version="2" class="compliance">
          <metadata>
            <title>The operating system must disable the stream control transmission protocol (SCTP).</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049600" comment="/etc/modprobe.d contains a file that contains 'install sctp /bin/false'" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049601" comment="/etc/modprobe.d contains a file that contains 'blacklist sctp'" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230497" version="2" class="compliance">
          <metadata>
            <title>The operating system must disable the transparent inter-process communication (TIPC) protocol.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049700" comment="/etc/modprobe.d contains a file that contains 'install tipc /bin/false'" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049701" comment="/etc/modprobe.d contains a file that contains 'blacklist tipc'" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230498" version="3" class="compliance">
          <metadata>
            <title>The operating system must disable mounting of cramfs.</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <criteria>
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23049800" comment="/etc/modprobe.d contains a file that contains 'install cramfs /bin/false'" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23049801" comment="/etc/modprobe.d contains a file that contains 'blacklist cramfs'" />
            </criteria>
            <criteria>
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23049802" comment="/etc/modprobe.conf contains 'install cramfs /bin/false'" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23049803" comment="/etc/modprobe.conf contains 'blacklist cramfs'" />
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230499" version="2" class="compliance">
          <metadata>
            <title>The operating system must disable IEEE 1394 (FireWire) Support.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049900" comment="/etc/modprobe.d contains a file that contains 'install firewire-core /bin/false'" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23049901" comment="/etc/modprobe.d contains a file that contains 'blacklist firewire-core'" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230502" version="2" class="compliance">
          <metadata>
            <title>The operating system file system automounter must be disabled unless required.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23050200" comment="The autofs.service is inactive if it exists." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230503" version="2" class="compliance">
          <metadata>
            <title>The operating system must be configured to disable USB mass storage.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23050300" comment="/etc/modprobe.d contains a file that contains 'install usb-storage /bin/false'" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23050301" comment="/etc/modprobe.d contains a file that contains 'blacklist usb-storage'" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230505" version="1" class="compliance">
          <metadata>
            <title>A firewall must be installed on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23050500" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230507" version="1" class="compliance">
          <metadata>
            <title>The operating system Bluetooth must be disabled.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23050700" comment="/etc/modprobe.d contains a file that contains 'install bluetooth /bin/false'" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23050701" comment="/etc/modprobe.d contains a file that contains 'blacklist bluetooth'" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230508" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /dev/shm with the nodev option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23050800" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23050800" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230509" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /dev/shm with the nosuid option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23050900" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23050900" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230510" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /dev/shm with the noexec option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051000" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051001" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230511" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /tmp with the nodev option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051100" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051101" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051102" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230512" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /tmp with the nosuid option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051200" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051201" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230514" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/log with the nodev option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051400" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051401" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051402" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230515" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/log with the nosuid option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051500" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051501" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051502" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230516" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/log with the noexec option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051600" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051600" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051601" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230517" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/log/audit with the nodev option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051700" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051701" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051702" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230518" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/log/audit with the nosuid option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051800" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051800" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230519" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/log/audit with the noexec option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051900" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23051901" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230520" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/tmp with the nodev option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23052000" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23052001" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230521" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/tmp with the nosuid option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23052100" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23052101" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230525" version="1" class="compliance">
          <metadata>
            <title>A firewall must be able to protect against or limit the effects of Denial of Service (DoS) attacks by ensuring the operating system can implement rate-limiting measures on impacted network interfaces.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23052500" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230526" version="1" class="compliance">
          <metadata>
            <title>All the operating system networked systems must have and implement SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23052600" comment="The openssh-server package is installed" />
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23052601" comment="The ssh daemon is running." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230527" version="3" class="compliance">
          <metadata>
            <title>The operating system must force a frequent session key renegotiation for SSH connections to the server.</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23052700" comment="/etc/ssh/sshd_config:RekeyLimit maximum data and time are greater than zero." />
            <criteria operator="AND">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:25798801" comment="sshd_config includes sshd_config.d" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23052701" comment="/etc/ssh/sshd_config.d:RekeyLimit maximum data and time are greater than zero." />
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230529" version="1" class="compliance">
          <metadata>
            <title>The x86 Ctrl-Alt-Delete key sequence must be disabled on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23052900" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230530" version="1" class="compliance">
          <metadata>
            <title>The x86 Ctrl-Alt-Delete key sequence in the operating system must be disabled if a graphical user interface is installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23053000" comment="logout key is set to an empty string" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230531" version="2" class="compliance">
          <metadata>
            <title>The systemd Ctrl-Alt-Delete burst key sequence in the operating system must be disabled.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23053100" comment="/etc/systemd/system.conf:CtrlAltDelBurstAction is set to none." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230532" version="5" class="compliance">
          <metadata>
            <title>The debug-shell systemd service must be disabled on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23053200" comment="debug-shell.service is masked" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230533" version="1" class="compliance">
          <metadata>
            <title>The Trivial File Transfer Protocol (TFTP) server package must not be installed if not required for the operating system operational support.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23053300" comment="The tftp-server package is absent." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230534" version="1" class="compliance">
          <metadata>
            <title>The root account must be the only account having unrestricted access to the operating system system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23053400" comment="Only the root account has a UID of zero." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230535" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent IPv6 Internet Control Message Protocol (ICMP) redirect messages from being accepted.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23053500" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23053500" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230536" version="1" class="compliance">
          <metadata>
            <title>The operating system must not send Internet Control Message Protocol (ICMP) redirects.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23053600" comment="net.ipv4.conf.all.send_redirects setting in kernel is 0" />
            <criteria operator="OR">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23053600" comment="net.ipv4.conf.all.send_redirects setting in admin sysctl configuration files is set to 0" />
              <criteria operator="AND">
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23053601" comment="net.ipv4.conf.all.send_redirects setting in admin sysctl configuration files is missing" />
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23053602" comment="net.ipv4.conf.all.send_redirects setting in system sysctl configuration files is set to 0" />
              </criteria>
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230537" version="1" class="compliance">
          <metadata>
            <title>The operating system must not respond to Internet Control Message Protocol (ICMP) echoes sent to a broadcast address.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23053700" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23053700" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230538" version="1" class="compliance">
          <metadata>
            <title>The operating system must not forward IPv6 source-routed packets.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23053800" comment="net.ipv6.conf.all.accept_source_route setting in kernel is 0" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23053801" comment="net.ipv6.conf.all.accept_source_route setting in sysctl configuration files is set to 0, and nothing else" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230539" version="1" class="compliance">
          <metadata>
            <title>The operating system must not forward IPv6 source-routed packets by default.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23053902" comment="net.ipv6.conf.default.accept_source_route setting in kernel is 0" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23053903" comment="net.ipv6.conf.default.accept_source_route setting in sysctl configuration files is set to 0, and nothing else" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230540" version="1" class="compliance">
          <metadata>
            <title>The operating system must not enable IPv6 packet forwarding unless the system is a router.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054000" comment="net.ipv6.conf.all.forwarding setting in kernel is 0" />
            <criteria operator="OR">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23054000" comment="net.ipv6.conf.all.forwarding setting in admin sysctl configuration files is set to 0" />
              <criteria operator="AND">
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23054001" comment="net.ipv6.conf.all.forwarding setting in admin sysctl configuration files is missing" />
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23054002" comment="net.ipv6.conf.all.forwarding setting in system sysctl configuration files is set to 0" />
              </criteria>
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230541" version="1" class="compliance">
          <metadata>
            <title>The operating system must not accept router advertisements on all IPv6 interfaces.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054100" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23054100" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230542" version="1" class="compliance">
          <metadata>
            <title>The operating system must not accept router advertisements on all IPv6 interfaces by default.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:25312000" comment="net.ipv6.conf.default.accept_ra setting in kernel is 0" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25312001" comment="net.ipv6.conf.default.accept_ra setting in sysctl configuration files is set to 0, and nothing else" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230543" version="3" class="compliance">
          <metadata>
            <title>The operating system must not allow interfaces to perform Internet Control Message Protocol (ICMP) redirects by default.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054300" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23054301" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230544" version="1" class="compliance">
          <metadata>
            <title>The operating system must ignore IPv6 Internet Control Message Protocol (ICMP) redirect messages.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054400" comment="net.ipv6.conf.all.accept_redirects setting in kernel is 0" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23054401" comment="net.ipv6.conf.all.accept_redirects setting in sysctl configuration files is set to 0, and nothing else" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230545" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable access to network bpf syscall from unprivileged processes.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054500" comment="kernel.unprivileged_bpf_disabled setting in kernel is '1'." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23054501" comment="kernel.unprivileged_bpf_disabled setting is set to '1' without conflicting settings in other files" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230546" version="1" class="compliance">
          <metadata>
            <title>The operating system must restrict usage of ptrace to descendant  processes.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054600" comment="kernel.yama.ptrace_scope setting in kernel is set to 1" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23054601" comment="kernel.yama.ptrace_scope in sysctl configuration files is set to 1, and nothing else, and there are no conflicting settings in other files" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230547" version="1" class="compliance">
          <metadata>
            <title>The operating system must restrict exposed kernel pointer addresses access.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054700" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23054701" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230548" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable the use of user namespaces.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054800" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23054801" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230549" version="2" class="compliance">
          <metadata>
            <title>Use reverse path filtering on all IPv4 interfaces.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23054900" comment="net.ipv4.conf.all.rp_filter setting in kernel is 1" />
            <criteria operator="OR">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23054900" comment="net.ipv4.conf.all.rp_filter setting in admin sysctl configuration files is set to 1" />
              <criteria operator="AND">
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23054901" comment="net.ipv4.conf.all.rp_filter setting in admin sysctl configuration files is missing" />
                <criterion test_ref="oval:mil.disa.stig.ind:tst:23054902" comment="net.ipv4.conf.all.rp_filter setting in system sysctl configuration files is set to 1" />
              </criteria>
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230550" version="2" class="compliance">
          <metadata>
            <title>The operating system must be configured to prevent unrestricted mail relaying.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23055001" comment="/etc/postfix/main.cf: smtpd_client_restrictions = permit_mynetworks,reject" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230553" version="1" class="compliance">
          <metadata>
            <title>The graphical display manager must not be installed on the operating system unless approved.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23055300" comment="The graphical display manager is absent." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230554" version="1" class="compliance">
          <metadata>
            <title>The operating system network interfaces must not be in promiscuous mode.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:23055400" comment="no network interfaces are in promiscuous mode" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230555" version="2" class="compliance">
          <metadata>
            <title>The operating system remote X connections for interactive users must be disabled unless to fulfill documented and validated mission requirements.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23055500" comment="/etc/ssh/sshd_config or /etc/ssh/sshd_config.d/*:X11Forwarding == no" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230556" version="1" class="compliance">
          <metadata>
            <title>The operating system SSH daemon must prevent remote hosts from connecting to the proxy display.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23055600" comment="sshd_config X11UseLocalhost is set to 'yes'." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230557" version="1" class="compliance">
          <metadata>
            <title>If the Trivial File Transfer Protocol (TFTP) server is required, the operating system TFTP daemon must be configured to operate in secure mode.</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230533" comment="The tftp-server package is absent." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23055700" comment="/etc/xinetd.d/tftp: server_args has a -s option with a subdirectory assigned" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230558" version="1" class="compliance">
          <metadata>
            <title>A File Transfer Protocol (FTP) server package must not be installed unless mission essential on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23055800" comment="An FTP server package is not installed." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230559" version="2" class="compliance">
          <metadata>
            <title>The gssproxy package must not be installed unless mission essential on the operating system.</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23055900" comment="gssproxy package is not installed" />
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:25785400" comment="nfs is in use" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230560" version="1" class="compliance">
          <metadata>
            <title>The iprutils package must not be installed unless mission essential on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23056000" comment="package iprutils is not installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:230561" version="1" class="compliance">
          <metadata>
            <title>The tuned package must not be installed unless mission essential on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23056100" negate="true" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:237640" version="2" class="compliance">
          <metadata>
            <title>The krb5-server package must not be installed on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23764000" comment="package krb5-workstation is not installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:237641" version="1" class="compliance">
          <metadata>
            <title>The operating system must restrict privilege elevation to authorized personnel.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23764100" comment="ALL is not configured in /etc/sudoers" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23764101" comment="ALL is not configured in /etc/sudoers.d" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:237642" version="2" class="compliance">
          <metadata>
            <title>The operating system must use the invoking user's password for privilege escalation when using "sudo".</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <criteria operator="AND" comment="All config in sudoers">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23764200" comment="Defaults !targetpw in /etc/sudoers" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23764203" comment="Defaults !rootpw in /etc/sudoers" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23764205" comment="Defaults !runaspw in /etc/sudoers" />
            </criteria>
            <criteria operator="AND" comment="All config in sudoers.d">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23764201" comment="/etc/sudoers.d included in /etc/sudoers" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23764202" comment="Defaults !targetpw in /etc/sudoers.d" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23764204" comment="Defaults !rootpw in /etc/sudoers.d" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:23764206" comment="Defaults !runaspw in /etc/sudoers.d" />
            </criteria>
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:237643" version="1" class="compliance">
          <metadata>
            <title>The operating system must require re-authentication when using the "sudo" command.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:23764300" comment="Defaults timestamp_timeout is to a positive number in /etc/sudoers and /etc/sudoers.d." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244519" version="1" class="compliance">
          <metadata>
            <title>The operating system must display a banner before granting local or remote access to the system via a graphical user logon.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24451900" comment="/etc/dconf/db/local.d/* has banner-message-enable set to true" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244523" version="1" class="compliance">
          <metadata>
            <title>The operating system operating systems must require authentication upon booting into emergency mode.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24452300" comment="emergency.service config correct" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244524" version="1" class="compliance">
          <metadata>
            <title>The operating system pam_unix.so module must be configured in the system-auth file to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24452400" comment="/etc/pam.d/system-auth:password includes pam_unix.so sha512" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244527" version="1" class="compliance">
          <metadata>
            <title>The operating system must have the packages required to use the hardware random number generator entropy gatherer service.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:24452700" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244528" version="1" class="compliance">
          <metadata>
            <title>The operating system SSH daemon must not allow GSSAPI authentication, except to fulfill documented and validated mission requirements.</title>
            <description />
          </metadata>
          <criteria operator="OR">
            <criteria>
              <criterion test_ref="oval:mil.disa.stig.ind:tst:25798801" comment="sshd_config includes sshd_config.d" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:24452800" comment="/etc/ssh/sshd_config.d: GSSAPIAuthentication is set to no" />
            </criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24452801" comment="/etc/ssh/sshd_config: GSSAPIAuthentication is set to no" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244529" version="1" class="compliance">
          <metadata>
            <title>The operating system must use a separate file system for /var/tmp.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:24452900" comment="/var/tmp is mounted" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244530" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent files with the setuid and setgid bit set from being executed on the /boot/efi directory.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:24453000" comment="/boot/efi is mounted an configured with the nosuid option." />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24453001" comment="If /boot/efi is configured in /etc/fstab it is with the nosuid option." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244539" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent a user from overriding the screensaver lock-enabled setting for the graphical user interface.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25801700" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24453900" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244541" version="1" class="compliance">
          <metadata>
            <title>The operating system must not allow blank or null passwords in the password-auth file.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24454100" comment="There are no instances of nullok in /etc/pam.d/password-auth." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244543" version="1" class="compliance">
          <metadata>
            <title>The operating system must notify the System Administrator (SA) and Information System Security Officer (ISSO) (at a minimum) when allocated audit record storage volume 75 percent utilization.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24454300" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244545" version="1" class="compliance">
          <metadata>
            <title>The operating system fapolicy module must be enabled.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:24454500" comment="fapolicyd is active" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244549" version="1" class="compliance">
          <metadata>
            <title>All the operating system networked systems must have openssh-server package installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:24454900" comment="SSH is installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244550" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent IPv4 Internet Control Message Protocol (ICMP) redirect messages from being accepted.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:24455000" comment="net.ipv4.conf.default.accept_redirects setting in kernel is 0" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24455001" comment="net.ipv4.conf.default.accept_redirects setting in acceptable directory is set to 0, and nothing else, and it only appears once" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244551" version="1" class="compliance">
          <metadata>
            <title>The operating system must not forward IPv4 source-routed packets.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:24455100" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24455100" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244552" version="1" class="compliance">
          <metadata>
            <title>The operating system must not forward IPv4 source-routed packets by default.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:24455200" comment="net.ipv4.conf.default.accept_source_route setting in kernel is 0" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24455201" comment="net.ipv4.conf.default.accept_source_route setting in acceptable directory is set to 0, and nothing else, and there are no conflicting settings in other files" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244553" version="1" class="compliance">
          <metadata>
            <title>The operating system must ignore IPv4 Internet Control Message Protocol (ICMP) redirect messages.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:24455300" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24455300" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:244554" version="1" class="compliance">
          <metadata>
            <title>The operating system must enable hardening for the Berkeley Packet Filter Just-in-time compiler.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:24455400" comment="net.core.bpf_jit_harden is set to 2 in kernel" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24455401" comment="net.core.bpf_jit_harden is set to 2 in the sysctl configuration files." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:248625" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent special devices on file systems that are imported via Network File System (NFS).</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24862500" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24862501" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:248626" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent files with the setuid and setgid bit set from being executed on file systems that are imported via Network File System (NFS).</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24862600" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24862601" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:248858" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /var/tmp with the noexec option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:24885800" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:24885800" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:251706" version="1" class="compliance">
          <metadata>
            <title>The operating system operating system must not have accounts configured with blank or null passwords.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25170600" comment="There are no accounts in /etc/shadow that have blank password fields." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:251707" version="1" class="compliance">
          <metadata>
            <title>The operating system library directories must have mode 755 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:25170700" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:251708" version="1" class="compliance">
          <metadata>
            <title>The operating system library directories must be owned by root.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:25170800" comment="All system-wide library directories must be owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:251709" version="1" class="compliance">
          <metadata>
            <title>The operating system library directories must be group-owned by root or a system account.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:25170900" comment="All system-wide library directories must be group-owned by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:251713" version="1" class="compliance">
          <metadata>
            <title>The operating system must ensure the password complexity module is enabled in the system-auth file.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25171300" comment="system-auth pam_pwquality" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:251714" version="1" class="compliance">
          <metadata>
            <title>Systems below version 8.4 must ensure the password complexity module in the system-auth file is configured for three retries or less.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25171400" comment="/etc/pam.d/system-auth:retry not greater than 3 and not 0" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:251715" version="1" class="compliance">
          <metadata>
            <title>Systems below version 8.4 must ensure the password complexity module in the password-auth file is configured for three retries or less.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25171500" comment="/etc/pam.d/password-auth:retry not greater than 3 and not 0" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:251718" version="1" class="compliance">
          <metadata>
            <title>The graphical display manager must not be the default target on the operating system unless approved.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:25171800" comment="default.target is symlinked to multi-user.target" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:252997" version="5" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the "rename" command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25299700" comment="Audit 32-bit invocations of rename" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25299701" comment="Audit 64-bit invocations of rename" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:252998" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the "renameat" command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25299800" comment="Audit 32-bit invocations of renameat" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25299801" comment="Audit 64-bit invocations of renameat" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:252999" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the "rmdir" command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25299900" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25299901" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:253000" version="5" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the "unlink" command in the operating system must generate an audit record</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25300000" comment="Audit 32-bit invocations of unlink" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25300001" comment="Audit 64-bit invocations of unlink" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:253001" version="2" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the "unlinkat" command in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25300100" comment="Audit 32-bit invocations of unlinkat" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25300101" comment="Audit 64-bit invocations of unlinkat" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:253034" version="2" class="compliance">
          <metadata>
            <title>The operating system audit system must be configured to audit any usage of the "fsetxattr" system call.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303400" comment="Audit 32-bit invocations of fsetxattr syscall (auid&gt;=1000)" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303401" comment="Audit 64-bit invocations of fsetxattr syscall (auid&gt;=1000)" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303402" comment="Audit 32-bit invocations of fsetxattr syscall (auid=0)" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303403" comment="Audit 64-bit invocations of fsetxattr syscall (auid=0)" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:253035" version="1" class="compliance">
          <metadata>
            <title>The operating system audit system must be configured to audit any usage of the "lsetxattr" system call.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303500" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303501" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303502" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303503" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:253036" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the fremovexattr system call in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303600" comment="Audit 32-bit invocations of fremovexattr syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303601" comment="Audit 64-bit invocations of fremovexattr syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303602" comment="Audit 32-bit invocations of fremovexattr syscall by root" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303603" comment="Audit 64-bit invocations of fremovexattr syscall by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:253037" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the "lremovexattr" system call in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303700" comment="Audit 32-bit invocations of lremovexattr syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303701" comment="Audit 64-bit invocations of lremovexattr syscall" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303702" comment="Audit 32-bit invocations of lremovexattr syscall by root" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303703" comment="Audit 64-bit invocations of lremovexattr syscall by root" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:253038" version="1" class="compliance">
          <metadata>
            <title>Successful/unsuccessful uses of the "removexattr" system call in the operating system must generate an audit record.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303800" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303801" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303802" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25303803" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:257258" version="1" class="compliance">
          <metadata>
            <title>The system must terminate idle user sessions.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25725800" comment="The system terminates idle user sessions." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:257867" version="1" class="compliance">
          <metadata>
            <title>The operating system must mount /tmp with the noexec option.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23051300" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:257890" version="1" class="compliance">
          <metadata>
            <title>All the operating system local interactive user home directories must have mode 0750 or less permissive.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:25789000" comment="All local interactive user home directories are 0750 or less" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:257936" version="1" class="compliance">
          <metadata>
            <title>A firewall must be active on the operating system.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25793600" comment="The firewall daemon is active" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:257996" version="1" class="compliance">
          <metadata>
            <title>The operating system SSH daemon must be configured with a timeout interval.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25799600" comment="/etc/ssh/sshd_config or /etc/ssh/sshd_config.d/.* :ClientAliveInterval == 600" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258021" version="1" class="compliance">
          <metadata>
            <title>The operating system must enable a user session lock until that user re-establishes access using established identification and authentication procedures for graphical user sessions.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25802100" comment="The operating system enables the GUI screensaver lock feature." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258026" version="1" class="compliance">
          <metadata>
            <title>The operating system must prevent a user from overriding the session lock-delay setting for the graphical user interface.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25802600" comment="dconf user database(s) exist" />
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25802601" comment="/org/gnome/desktop/screensaver/lock-delay in dconf user database locks directories exists" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258033" version="1" class="compliance">
          <metadata>
            <title>The operating system must disable the user list at logon for graphical user interfaces.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25803300" comment="The operating system disables the GUI user list feature." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258035" version="2" class="compliance">
          <metadata>
            <title>The operating system must have the USBGuard installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25803500" comment="usbguard package is installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258036" version="1" class="compliance">
          <metadata>
            <title>The operating system must have the USBGuard package enabled.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25803600" comment="usbguard is active" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258045" version="1" class="compliance">
          <metadata>
            <title>The operating system duplicate User IDs (UIDs) must not exist for interactive users.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25804500" comment="GIDs are unique" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258051" version="1" class="compliance">
          <metadata>
            <title>All the operating system local interactive users must have a home directory assigned in the /etc/passwd file.</title>
            <description />
          </metadata>
          <criteria operator="AND">
            <criterion test_ref="oval:mil.disa.stig.unix:tst:25805100" comment="Check for local non-system users in /etc/passwd without a home directory defined" />
            <criterion test_ref="oval:mil.disa.stig.unix:tst:25805101" comment="Check /etc/passwd if root has a home directory defined" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258089" version="2" class="compliance">
          <metadata>
            <title>The operating system fapolicy module must be installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25808900" comment="fapolicyd package is installed" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258118" version="2" class="compliance">
          <metadata>
            <title>The operating system operating system must not be configured to bypass password requirements for privilege escalation.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25811800" comment="pam_succeed_if is not present in /etc/pam.d/sudo" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258146" version="4" class="compliance">
          <metadata>
            <title>The operating system must authenticate the remote logging server for off-loading audit logs.</title>
            <description />
          </metadata>
          <criteria>
            <criteria operator="OR">
              <criterion test_ref="oval:mil.disa.stig.ind:tst:25814600" comment="ActionSendStreamDriverAuthMode is set to x509/name (legacy syntax)" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:25814601" comment="StreamDriverAuthMode is set to x509/name (advanced syntax)" />
            </criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25814602" comment="StreamDriverAuthMode is not set in a module block (advanced syntax)" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:258152" version="1" class="compliance">
          <metadata>
            <title>The operating system audit service must be enabled.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25815200" comment="auditd is active" />
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25815201" comment="auditd is running" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:25784900" version="1" class="inventory">
          <metadata>
            <title>The autofs package is installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25784900" comment="The autofs package is installed." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:25785400" version="2" class="inventory">
          <metadata>
            <title>The system has nfs entries in /etc/fstab</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:25785400" comment="nfs mounts" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:25795100" version="1" class="inventory">
          <metadata>
            <title>The postifx package is installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:23055000" comment="The postifx package is installed." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.defs:def:25795200" version="1" class="compliance">
          <metadata>
            <title>The Trivial File Transfer Protocol (TFTP) server package is installed.</title>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:25795201" comment="The tftp-server package is installed." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100001" version="1" class="inventory">
          <metadata>
            <title>The system is RHEL 8.1 or lower</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10000100" comment="The redhat-release package is version 8.1 or lower" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100002" version="1" class="inventory">
          <metadata>
            <title>The system is RHEL 8.2 or higher</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10000200" comment="The redhat-release package is version 8.2 or higher" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100005" version="2" class="inventory">
          <metadata>
            <title>Gnome is installed</title>
            <affected family="unix">
              <platform>Linux Systems</platform>
            </affected>
            <description />
          </metadata>
          <criteria operator="OR">
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10000500" comment="The Gnome-shell package is installed (RPM)" />
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10000501" comment="The Gnome-shell package is installed (DEB)" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100006" version="6" class="inventory">
          <metadata>
            <title>Linux United Extensible Firmware Interface (UEFI)</title>
            <affected family="unix">
              <platform>Linux Systems</platform>
            </affected>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:10000602" comment="/sys/firmware/efi exists" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100007" version="6" class="inventory">
          <metadata>
            <title>Linux BIOS</title>
            <affected family="unix">
              <platform>Linux Systems</platform>
            </affected>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.unix:tst:10000701" comment="/sys/firmware/efi does not exist" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100008" version="1" class="inventory">
          <metadata>
            <title>The system is RHEL 8.3 or lower</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10000800" comment="The redhat-release package is version 8.3 or lower" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100009" version="1" class="inventory">
          <metadata>
            <title>The system is RHEL 8.4 or higher</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description />
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10000900" comment="The redhat-release package is version 8.4 or higher" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100012" version="1" class="inventory">
          <metadata>
            <title>IPv6 is disabled in the kernel.</title>
            <affected family="unix">
              <platform>Linux Systems</platform>
            </affected>
            <description>IPv6 is disabled in the kernel, either via a kernel cmdline option or sysctl.</description>
          </metadata>
          <criteria operator="OR">
            <criteria operator="AND" comment="IPv6 is disabled via sysctl">
              <criterion test_ref="oval:mil.disa.stig.unix:tst:10001200" comment="net.ipv6.conf.all.disable_ipv6 setting in kernel is 1" />
              <criterion test_ref="oval:mil.disa.stig.ind:tst:10001201" comment="net.ipv6.conf.all.disable_ipv6 setting in sysctl configuration files is set to 1, and nothing else" />
            </criteria>
            <criterion test_ref="oval:mil.disa.stig.ind:tst:10001202" comment="ipv6.disable=1 in the kernel cmdline" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100014" version="1" class="inventory">
          <metadata>
            <title>krb5 server 1.17 or higher</title>
            <affected family="unix">
              <platform>Linux Systems</platform>
            </affected>
            <description>krb5 server 1.17 or higher is installed.</description>
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10001400" comment="krb5-server-1.17-18.el8.x86_64 or newer is installed." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.linux:def:100015" version="1" class="inventory">
          <metadata>
            <title>krb5 workstation 1.17 or higher</title>
            <affected family="unix">
              <platform>Linux Systems</platform>
            </affected>
            <description>krb5 workstation 1.17 or higher is installed.</description>
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10001500" comment="krb5-workstation-1.17-18.el8.x86_64 or newer is installed." />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230221" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010000 - RHEL 8 must be a vendor-supported release.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>An operating system release is considered "supported" if the vendor continues to provide security patches for the product. With an unsupported release, it will not be possible to resolve security issues discovered in the system software.

Red Hat offers the Extended Update Support (EUS) add-on to a Red Hat Enterprise Linux subscription, for a fee, for those customers who wish to standardize on a specific minor release for an extended period. The RHEL 8 minor releases eligible for EUS are 8.1, 8.2, 8.4, 8.6, and 8.8. Each RHEL 8 EUS stream is available for 24 months from the availability of the minor release. RHEL 8.10 will be the final minor release overall. For more details on the Red Hat Enterprise Linux Life Cycle  visit https://access.redhat.com/support/policy/updates/errata/.
Note: The life-cycle time spans and dates are subject to adjustment.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230221" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230223" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010020 - RHEL 8 must implement NIST FIPS-validated cryptography for the following: to provision digital signatures, to generate cryptographic hashes, and to protect data requiring data-at-rest protections in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The operating system must implement cryptographic modules adhering to the higher standards approved by the Federal Government since this provides assurance they have been tested and validated.

RHEL 8 utilizes GRUB 2 as the default bootloader. Note that GRUB 2 command-line parameters are defined in the "kernelopts" variable of the /boot/grub2/grubenv file for all kernel boot entries.  The command "fips-mode-setup" modifies the "kernelopts" variable, which in turn updates all kernel boot entries. 

The fips=1 kernel option needs to be added to the kernel command line during system installation so that key generation is done with FIPS-approved algorithms and continuous monitoring tests in place. Users must also ensure the system has plenty of entropy during the installation process by moving the mouse around, or if no mouse is available, ensuring that many keystrokes are typed. The recommended amount of keystrokes is 256 and more. Less than 256 keystrokes may generate a non-unique key.

Satisfies: SRG-OS-000033-GPOS-00014, SRG-OS-000125-GPOS-00065, SRG-OS-000396-GPOS-00176, SRG-OS-000423-GPOS-00187, SRG-OS-000478-GPOS-00223</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230223" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230228" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010070 - All RHEL 8 remote access methods must be monitored.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access management difficult at best.

Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.

Automated monitoring of remote access sessions allows organizations to detect cyber attacks and ensure ongoing compliance with remote access policies by auditing connection activities of remote access capabilities, such as Remote Desktop Protocol (RDP), on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230228" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230231" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010110 - RHEL 8 must encrypt all stored passwords with a FIPS 140-2 approved cryptographic hashing algorithm.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.

Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230231" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230232" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010120 - RHEL 8 must employ FIPS 140-2 approved cryptographic hashing algorithms for all stored passwords.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The system must use a strong hashing algorithm to store the password.

Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230232" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230233" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010130 - The RHEL 8 shadow password suite must be configured to use a sufficient number of hashing rounds.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The system must use a strong hashing algorithm to store the password. The system must use a sufficient number of hashing rounds to ensure the required level of entropy.

Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230233" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230234" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010140 - RHEL 8 operating systems booted with United Extensible Firmware Interface (UEFI) must require authentication upon booting into single-user mode and maintenance.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes single-user or maintenance mode is granted privileged access to all files on the system. GRUB 2 is the default boot loader for RHEL 8 and is designed to require a password to boot into single-user mode or make modifications to the boot menu.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230234" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230235" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010150 - RHEL 8 operating systems booted with a BIOS must require authentication upon booting into single-user and maintenance modes.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes single-user or maintenance mode is granted privileged access to all files on the system. GRUB 2 is the default boot loader for RHEL 8 and is designed to require a password to boot into single-user mode or make modifications to the boot menu.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230235" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230236" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010151 - RHEL 8 operating systems must require authentication upon booting into rescue mode.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If the system does not require valid root authentication before it boots into emergency or rescue mode, anyone who invokes emergency or rescue mode is granted privileged access to all files on the system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230236" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230237" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010160 - The RHEL 8 pam_unix.so module must be configured in the password-auth file to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules. 

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230237" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230238" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010161 - RHEL 8 must prevent system daemons from using Kerberos for authentication.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules.

The key derivation function (KDF) in Kerberos is not FIPS compatible.  Ensuring the system does not have any keytab files present prevents system daemons from using Kerberos for authentication.  A keytab is a file containing pairs of Kerberos principals and encrypted keys.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230238" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230239" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010162 - The krb5-workstation package must not be installed on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules.

Currently, Kerberos does not utilize FIPS 140-2 cryptography.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230239" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230240" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010170 - RHEL 8 must use a Linux Security Module configured to enforce limits on system services.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters.

This requirement applies to operating systems performing security function verification/testing and/or systems and environments that require this functionality.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230240" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230241" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010171 - RHEL 8 must have policycoreutils package installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters.

Policycoreutils contains the policy core utilities that are required for basic operation of an SELinux-enabled system. These utilities include load_policy to load SELinux policies, setfile to label filesystems, newrole to switch roles, and run_init to run /etc/init.d scripts in the proper context.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230241" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230244" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010200 - RHEL 8 must be configured so that all network connections associated with SSH traffic are terminated at the end of the session or after 10 minutes of inactivity, except to fulfill documented and validated mission requirements.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Terminating an idle SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminating an idle SSH session will also free up resources committed by the managed network element.

Terminating network connections associated with communications sessions includes, for example, de-allocating associated TCP/IP address/port pairs at the operating system level and de-allocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean that the operating system terminates all sessions or network access; it only ends the inactive session and releases the resources associated with that session.

RHEL 8 utilizes /etc/ssh/sshd_config for configurations of OpenSSH. Within the sshd_config the product of the values of "ClientAliveInterval" and "ClientAliveCountMax" are used to establish the inactivity threshold. The "ClientAliveInterval" is a timeout interval in seconds after which if no data has been received from the client, sshd will send a message through the encrypted channel to request a response from the client. The "ClientAliveCountMax" is the number of client alive messages that may be sent without sshd receiving any messages back from the client. If this threshold is met, sshd will disconnect the client. For more information on these settings and others, refer to the sshd_config man pages.

Satisfies: SRG-OS-000163-GPOS-00072, SRG-OS-000126-GPOS-00066, SRG-OS-000279-GPOS-00109</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230244" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230245" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010210 - The RHEL 8 /var/log/messages file must have mode 0640 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230245" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230246" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010220 - The RHEL 8 /var/log/messages file must be owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230246" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230247" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010230 - The RHEL 8 /var/log/messages file must be group-owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230247" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230248" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010240 - The RHEL 8 /var/log directory must have mode 0755 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230248" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230249" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010250 - The RHEL 8 /var/log directory must be owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230249" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230250" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010260 - The RHEL 8 /var/log directory must be group-owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230250" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230253" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010292 - RHEL 8 must ensure the SSH server uses strong entropy.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The most important characteristic of a random number generator is its randomness, namely its ability to deliver random numbers that are impossible to predict.  Entropy in computer security is associated with the unpredictability of a source of randomness.  The random source with high entropy tends to achieve a uniform distribution of random values.  Random number generators are one of the most important building blocks of cryptosystems.

The SSH implementation in RHEL8 uses the OPENSSL library, which does not use high-entropy sources by default.  By using the SSH_USE_STRONG_RNG environment variable the OPENSSL random generator is reseeded from /dev/random.  This setting is not recommended on computers without the hardware random generator because insufficient entropy causes the connection to be blocked until enough entropy is available.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230253" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230255" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010294 - The RHEL 8 operating system must implement DoD-approved TLS encryption in the OpenSSL package.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without cryptographic integrity protections, information can be altered by unauthorized users without detection.

Remote access (e.g., RDP) is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.

Cryptographic mechanisms used for protecting the integrity of information include, for example, signed hash functions using asymmetric cryptography enabling distribution of the public key to verify the hash information while maintaining the confidentiality of the secret key used to generate the hash.

RHEL 8 incorporates system-wide crypto policies by default.  The employed algorithms can be viewed in the /etc/crypto-policies/back-ends/openssl.config file.

Satisfies: SRG-OS-000250-GPOS-00093, SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174, SRG-OS-000125-GPOS-00065</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230255" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230257" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010300 - RHEL 8 system commands must have mode 755 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230257" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230258" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010310 - RHEL 8 system commands must be owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230258" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230259" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010320 - RHEL 8 system commands must be group-owned by root or a system account.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230259" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230260" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010330 - RHEL 8 library files must have mode 755 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230260" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230261" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010340 - RHEL 8 library files must be owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230261" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230262" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010350 - RHEL 8 library files must be group-owned by root or a system account.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230262" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230264" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010370 - RHEL 8 must prevent the installation of software, patches, service packs, device drivers, or operating system components from a repository without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has been provided by a trusted vendor.

Accordingly, patches, service packs, device drivers, or operating system components must be signed with a certificate recognized and approved by the organization.

Verifying the authenticity of the software prior to installation validates the integrity of the patch or upgrade received from a vendor. This verifies the software has not been tampered with and that it has been provided by a trusted vendor. Self-signed certificates are disallowed by this requirement. The operating system should not have to verify the software again. This requirement does not mandate DoD certificates for this purpose; however, the certificate used to verify the software must be from an approved CA.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230264" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230265" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010371 - RHEL 8 must prevent the installation of software, patches, service packs, device drivers, or operating system components of local packages without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has been provided by a trusted vendor.

Accordingly, patches, service packs, device drivers, or operating system components must be signed with a certificate recognized and approved by the organization.

Verifying the authenticity of the software prior to installation validates the integrity of the patch or upgrade received from a vendor. This verifies the software has not been tampered with and that it has been provided by a trusted vendor. Self-signed certificates are disallowed by this requirement. The operating system should not have to verify the software again. This requirement does not mandate DoD certificates for this purpose; however, the certificate used to verify the software must be from an approved CA.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230265" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230266" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010372 - RHEL 8 must prevent the loading of a new kernel for later execution.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has been provided by a trusted vendor.

Disabling kexec_load prevents an unsigned kernel image (that could be a windows kernel or modified vulnerable kernel) from being loaded. Kexec can be used subvert the entire secureboot process and should be avoided at all costs especially since it can load unsigned kernel images.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230266" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230267" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010373 - RHEL 8 must enable kernel parameters to enforce discretionary access control on symlinks.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which mode (e.g., read or write). Ownership is usually acquired as a consequence of creating the object or via specified ownership assignment. DAC allows the owner to determine who will have access to objects they control. An example of DAC includes user-controlled file permissions.

When discretionary access control policies are implemented, subjects are not constrained with regard to what actions they can take with information for which they have already been granted access. Thus, subjects that have been granted access to information are not prevented from passing (i.e., the subjects have the discretion to pass) the information to other subjects or objects. A subject that is constrained in its operation by Mandatory Access Control policies is still able to operate under the less rigorous constraints of this requirement. Thus, while Mandatory Access Control imposes constraints preventing a subject from passing information to another subject operating at a different sensitivity level, this requirement permits the subject to pass the information to any subject at the same sensitivity level. The policy is bounded by the information system boundary. Once the information is passed outside the control of the information system, additional means may be required to ensure the constraints remain in effect. While the older, more traditional definitions of discretionary access control require identity-based access control, that limitation is not required for this use of discretionary access control.

By enabling the fs.protected_symlinks kernel parameter, symbolic links are permitted to be followed only when outside a sticky world-writable directory, or when the UID of the link and follower match, or when the directory owner matches the symlink's owner. Disallowing such symlinks helps mitigate vulnerabilities based on insecure file system accessed by privileged programs, avoiding an exploitation vector exploiting unsafe use of open() or creat().

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf

Satisfies: SRG-OS-000312-GPOS-00122, SRG-OS-000312-GPOS-00123, SRG-OS-000312-GPOS-00124, SRG-OS-000324-GPOS-00125</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230267" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230268" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010374 - RHEL 8 must enable kernel parameters to enforce discretionary access control on hardlinks.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which mode (e.g., read or write). Ownership is usually acquired as a consequence of creating the object or via specified ownership assignment. DAC allows the owner to determine who will have access to objects they control. An example of DAC includes user-controlled file permissions.

When discretionary access control policies are implemented, subjects are not constrained with regard to what actions they can take with information for which they have already been granted access. Thus, subjects that have been granted access to information are not prevented from passing (i.e., the subjects have the discretion to pass) the information to other subjects or objects. A subject that is constrained in its operation by Mandatory Access Control policies is still able to operate under the less rigorous constraints of this requirement. Thus, while Mandatory Access Control imposes constraints preventing a subject from passing information to another subject operating at a different sensitivity level, this requirement permits the subject to pass the information to any subject at the same sensitivity level. The policy is bounded by the information system boundary. Once the information is passed outside the control of the information system, additional means may be required to ensure the constraints remain in effect. While the older, more traditional definitions of discretionary access control require identity-based access control, that limitation is not required for this use of discretionary access control.

By enabling the fs.protected_hardlinks kernel parameter, users can no longer create soft or hard links to files they do not own. Disallowing such hardlinks mitigate vulnerabilities based on insecure file system accessed by privileged programs, avoiding an exploitation vector exploiting unsafe use of open() or creat().

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf

Satisfies: SRG-OS-000312-GPOS-00122, SRG-OS-000312-GPOS-00123, SRG-OS-000312-GPOS-00124, SRG-OS-000324-GPOS-00125</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230268" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230269" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010375 - RHEL 8 must restrict access to the kernel message buffer.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of processes acting on behalf of prior users/roles) from being available to any current users/roles (or current processes) that obtain access to shared system resources (e.g., registers, main memory, hard disks) after those resources have been released back to information systems. The control of information in shared resources is also commonly referred to as object reuse and residual information protection.

This requirement generally applies to the design of an information technology product, but it can also apply to the configuration of particular information system components that are, or use, such products. This can be verified by acceptance/validation processes in DoD or other government agencies.

There may be shared resources with configurable protections (e.g., files in storage) that may be assessed on specific information system components.

Restricting access to the kernel message buffer limits access to only root. This prevents attackers from gaining additional system information as a non-privileged user.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230269" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230270" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010376 - RHEL 8 must prevent kernel profiling by unprivileged users.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of processes acting on behalf of prior users/roles) from being available to any current users/roles (or current processes) that obtain access to shared system resources (e.g., registers, main memory, hard disks) after those resources have been released back to information systems. The control of information in shared resources is also commonly referred to as object reuse and residual information protection.

This requirement generally applies to the design of an information technology product, but it can also apply to the configuration of particular information system components that are, or use, such products. This can be verified by acceptance/validation processes in DoD or other government agencies.

There may be shared resources with configurable protections (e.g., files in storage) that may be assessed on specific information system components.

Setting the kernel.perf_event_paranoid kernel parameter to "2" prevents attackers from gaining additional system information as a non-privileged user.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230270" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230271" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010380 - RHEL 8 must require users to provide a password for privilege escalation.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without reauthentication, users may access resources or perform tasks for which they do not have authorization.

When operating systems provide the capability to escalate a functional capability, it is critical the user reauthenticate.

Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230271" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230272" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010381 - RHEL 8 must require users to reauthenticate for privilege escalation.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without reauthentication, users may access resources or perform tasks for which they do not have authorization.

When operating systems provide the capability to escalate a functional capability, it is critical the user reauthenticate.

Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230272" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230273" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010390 - RHEL 8 must have the packages required for multifactor authentication installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Using an authentication device, such as a DoD Common Access Card (CAC) or token that is separate from the information system, ensures that even if the information system is compromised, credentials stored on the authentication device will not be affected.

Multifactor solutions that require devices separate from information systems gaining access include, for example, hardware tokens providing time-based or challenge-response authenticators and smart cards such as the U.S. Government Personal Identity Verification (PIV) card and the DoD CAC.

A privileged account is defined as an information system account with authorizations of a privileged user.

Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.

This requirement only applies to components where this is specific to the function of the device or has the concept of an organizational user (e.g., VPN, proxy capability). This does not apply to authentication for the purpose of configuring the device itself (management).</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230273" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230277" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010421 - RHEL 8 must clear the page allocator to prevent use-after-free attacks.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address space layout randomization. Data execution prevention safeguards can be either hardware-enforced or software-enforced with hardware providing the greater strength of mechanism.

Poisoning writes an arbitrary value to freed pages, so any modification or reference to that page after being freed or before being initialized will be detected and prevented. This prevents many types of use-after-free vulnerabilities at little performance cost. Also prevents leak of data and detection of corrupted memory.

Satisfies: SRG-OS-000134-GPOS-00068, SRG-OS-000433-GPOS-00192</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230277" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230278" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010422 - RHEL 8 must disable virtual syscalls.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Syscalls are special routines in the Linux kernel, which userspace applications ask to do privileged tasks.  Invoking a system call is an expensive operation because the processor must interrupt the currently executing task and switch context to kernel mode and then back to userspace after the system call completes.  Virtual Syscalls map into user space a page that contains some variables and the implementation of some system calls.  This allows the system calls to be executed in userspace to alleviate the context switching expense.

Virtual Syscalls provide an opportunity of attack for a user who has control of the return instruction pointer.  Disabling vsyscalls help to prevent return oriented programming (ROP) attacks via buffer overflows and overruns. If the system intends to run containers based on RHEL 6 components, then virtual syscalls will need enabled so the components function properly.

Satisfies: SRG-OS-000134-GPOS-00068, SRG-OS-000433-GPOS-00192</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230278" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230279" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010423 - RHEL 8 must clear SLUB/SLAB objects to prevent use-after-free attacks.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address space layout randomization. Data execution prevention safeguards can be either hardware-enforced or software-enforced with hardware providing the greater strength of mechanism.

Poisoning writes an arbitrary value to freed pages, so any modification or reference to that page after being freed or before being initialized will be detected and prevented. This prevents many types of use-after-free vulnerabilities at little performance cost. Also prevents leak of data and detection of corrupted memory.

SLAB objects are blocks of physically-contiguous memory.  SLUB is the unqueued SLAB allocator.

Satisfies: SRG-OS-000134-GPOS-00068, SRG-OS-000433-GPOS-00192</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230279" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230280" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010430 - RHEL 8 must implement address space layout randomization (ASLR) to protect its memory from unauthorized code execution.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address space layout randomization. Data execution prevention safeguards can be either hardware-enforced or software-enforced with hardware providing the greater strength of mechanism.

Examples of attacks are buffer overflow attacks.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230280" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230281" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010440 - YUM must remove all software components after updated versions have been installed on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some information technology products may remove older versions of software automatically from the information system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230281" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230282" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010450 - RHEL 8 must enable the SELinux targeted policy.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters.

This requirement applies to operating systems performing security function verification/testing and/or systems and environments that require this functionality.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230282" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230283" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010460 - There must be no shosts.equiv files on the RHEL 8 operating system.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The "shosts.equiv" files are used to configure host-based authentication for the system via SSH. Host-based authentication is not sufficient for preventing unauthorized access to the system, as it does not require interactive identification and authentication of a connection request, or for the use of two-factor authentication.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230283" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230284" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010470 - There must be no .shosts files on the RHEL 8 operating system.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The ".shosts" files are used to configure host-based authentication for individual users or the system via SSH. Host-based authentication is not sufficient for preventing unauthorized access to the system, as it does not require interactive identification and authentication of a connection request, or for the use of two-factor authentication.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230284" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230286" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010480 - The RHEL 8 SSH public host key files must have mode 0644 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If a public host key file is modified by an unauthorized user, the SSH service may be compromised.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230286" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230287" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010490 - The RHEL 8 SSH private host key files must have mode 0640 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If an unauthorized user obtains the private SSH host key file, the host could be impersonated.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230287" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230288" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010500 - The RHEL 8 SSH daemon must perform strict mode checking of home directory configuration files.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If other users have access to modify user-specific SSH configuration files, they may be able to log on to the system as another user.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230288" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230290" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010520 - The RHEL 8 SSH daemon must not allow authentication using known host’s authentication.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Configuring this setting for the SSH daemon provides additional assurance that remote logon via SSH will require a password, even in the event of misconfiguration elsewhere.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230290" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230291" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010521 - The RHEL 8 SSH daemon must not allow Kerberos authentication, except to fulfill documented and validated mission requirements.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Configuring these settings for the SSH daemon provides additional assurance that remote logon via SSH will not use unused methods of authentication, even in the event of misconfiguration elsewhere.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230291" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230292" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010540 - RHEL 8 must use a separate file system for /var.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230292" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230293" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010541 - RHEL 8 must use a separate file system for /var/log.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230293" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230294" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010542 - RHEL 8 must use a separate file system for the system audit data path.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230294" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230295" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010543 - A separate RHEL 8 filesystem must be used for the /tmp directory.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230295" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230296" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010550 - RHEL 8 must not permit direct logons to the root account using remote access via SSH.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Even though the communications channel may be encrypted, an additional layer of security is gained by extending the policy of not logging on directly as root. In addition, logging on with a user-specific account provides individual accountability of actions performed on the system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230296" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230298" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010561 - The rsyslog service must be running in RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Configuring RHEL 8 to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across the DoD that reflects the most restrictive security posture consistent with operational requirements.

Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example: registry settings; account, file, directory permission settings; and settings for functions, ports, protocols, services, and remote connections.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230298" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230299" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010570 - RHEL 8 must prevent files with the setuid and setgid bit set from being executed on file systems that contain user home directories.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230299" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230300" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010571 - RHEL 8 must prevent files with the setuid and setgid bit set from being executed on the /boot directory.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230300" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230301" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010580 - RHEL 8 must prevent special devices on non-root local partitions.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.  The only legitimate location for device files is the /dev directory located on the root partition.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230301" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230306" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010630 - RHEL 8 must prevent code from being executed on file systems that are imported via Network File System (NFS).</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The "noexec" mount option causes the system not to execute binary files. This option must be used for mounting any file system not containing approved binary as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230306" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230307" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-010640 - RHEL 8 must prevent special devices on file systems that are imported via Network File System (NFS).</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:248625" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230308" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-010650 - RHEL 8 must prevent files with the setuid and setgid bit set from being executed on file systems that are imported via Network File System (NFS).</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:248626" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230311" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010671 - RHEL 8 must disable the kernel.core_pattern.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230311" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230312" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010672 - RHEL 8 must disable acquiring, saving, and processing core dumps.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.

When the kernel invokes systemd-coredumpt to handle a core dump, it runs in privileged mode, and will connect to the socket created by the systemd-coredump.socket unit. This, in turn,  will spawn an unprivileged systemd-coredump@.service instance to process the core dump.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230312" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230313" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010673 - RHEL 8 must disable core dumps for all users.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230313" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230314" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010674 - RHEL 8 must disable storing core dumps.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230314" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230315" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010675 - RHEL 8 must disable core dump backtraces.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230315" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230316" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010680 - For RHEL 8 systems using Domain Name Servers (DNS) resolution, at least two name servers must be configured.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>To provide availability for name resolution services, multiple redundant name servers are mandated. A failure in name resolution could lead to the failure of security functions requiring name resolution, which may include time synchronization, centralized authentication, and remote system logging.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230316" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230320" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-010720 - All RHEL 8 local interactive users must have a home directory assigned in the /etc/passwd file.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files they should own.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258051" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230321" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-010730 - All RHEL 8 local interactive user home directories must have mode 0750 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Excessive permissions on local interactive user home directories may allow unauthorized access to user files by other users.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:257890" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230324" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010760 - All RHEL 8 local interactive user accounts must be assigned a home directory upon creation.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files they should own.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230324" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230325" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010770 - All RHEL 8 local initialization files must have mode 0740 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Local initialization files are used to configure the user's shell environment upon logon. Malicious modification of these files could compromise accounts upon logon.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230325" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230328" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010800 - A separate RHEL 8 filesystem must be used for user home directories (such as /home or an equivalent).</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230328" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230329" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010820 - Unattended or automatic logon via the RHEL 8 graphical user interface must not be allowed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Failure to restrict system access to authenticated users negatively impacts operating system security.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230329" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230330" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010830 - RHEL 8 must not allow users to override SSH environment variables.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>SSH environment options potentially allow users to bypass access restriction in some configurations.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230330" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230332" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020010 - RHEL 8 must automatically lock an account when three unsuccessful logon attempts occur.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230332" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230333" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020011 - RHEL 8 must automatically lock an account when three unsuccessful logon attempts occur.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230333" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230334" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020012 - RHEL 8 must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230334" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230335" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020013 - RHEL 8 must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230335" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230336" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020014 - RHEL 8 must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230336" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230337" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020015 - RHEL 8 must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230337" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230340" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020018 - RHEL 8 must prevent system messages from being presented when three unsuccessful logon attempts occur.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230340" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230341" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020019 - RHEL 8 must prevent system messages from being presented when three unsuccessful logon attempts occur.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230341" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230342" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020020 - RHEL 8 must log user name information when unsuccessful logon attempts occur.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module. Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230342" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230343" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020021 - RHEL 8 must log user name information when unsuccessful logon attempts occur.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230343" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230344" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020022 - RHEL 8 must include root when automatically locking an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

RHEL 8 can utilize the "pam_faillock.so" for this purpose. Note that manual changes to the listed files may be overwritten by the "authselect" program.

From "Pam_Faillock" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module. Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230344" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230345" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020023 - RHEL 8 must include root when automatically locking an account until the locked account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module.  Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.

From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.

Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230345" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230346" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020024 - RHEL 8 must limit the number of concurrent sessions to ten for all accounts and/or account types.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Operating system management includes the ability to control the number of users and user sessions that utilize an operating system. Limiting the number of allowed users and sessions per user is helpful in reducing the risks related to DoS attacks.

This requirement addresses concurrent sessions for information system accounts and does not address concurrent sessions by single users via multiple system accounts. The maximum number of concurrent sessions should be defined based on mission needs and the operational environment for each system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230346" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230347" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-020030 - RHEL 8 must enable a user session lock until that user re-establishes access using established identification and authentication procedures for graphical user sessions.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence.

The session lock is implemented at the point where session activity can be determined.

Regardless of where the session lock is determined and implemented, once invoked, the session lock must remain in place until the user reauthenticates. No other activity aside from reauthentication must unlock the system.

Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000030-GPOS-00011</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258021" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230351" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020050 - RHEL 8 must be able to initiate directly a session lock for all connection types using smartcard when the smartcard is removed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence.

The session lock is implemented at the point where session activity can be determined. Rather than be forced to wait for a period of time to expire before the user session can be locked, RHEL 8 needs to provide users with the ability to manually invoke a session lock so users can secure their session if it is necessary to temporarily vacate the immediate physical vicinity.

Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000030-GPOS-00011</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230351" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230354" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-020080 - RHEL 8 must prevent a user from overriding the session lock-delay setting for the graphical user interface.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature of the absence. Rather than relying on the user to manually lock their operating system session prior to vacating the vicinity, operating systems need to be able to identify when a user's session has idled and take action to initiate the session lock.

The session lock is implemented at the point where session activity can be determined and/or controlled.

Implementing session settings will have little value if a user is able to manipulate these settings from the defaults prescribed in the other requirements of this implementation guide.

Locking these settings from non-privileged users is crucial to maintaining a protected baseline.

Satisfies: SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012, SRG-OS-000480-GPOS-00227</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258026" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230356" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020100 - RHEL 8 must ensure the password complexity module is enabled in the password-auth file.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. This is set in both:
/etc/pam.d/password-auth
/etc/pam.d/system-auth</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230356" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230357" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020110 - RHEL 8 must enforce password complexity by requiring that at least one uppercase character be used.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes pwquality as a mechanism to enforce password complexity. Note that in order to require uppercase characters, without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230357" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230358" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020120 - RHEL 8 must enforce password complexity by requiring that at least one lower-case character be used.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes pwquality as a mechanism to enforce password complexity. Note that in order to require lower-case characters without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230358" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230359" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020130 - RHEL 8 must enforce password complexity by requiring that at least one numeric character be used.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. Note that in order to require numeric characters, without degrading the minlen value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230359" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230360" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020140 - RHEL 8 must require the maximum number of repeating characters of the same character class be limited to four when passwords are changed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. The "maxclassrepeat" option sets the maximum number of allowed same consecutive characters in the same class in the new password.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230360" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230361" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020150 - RHEL 8 must require the maximum number of repeating characters be limited to three when passwords are changed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. The "maxrepeat" option sets the maximum number of allowed same consecutive characters in a new password.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230361" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230362" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020160 - RHEL 8 must require the change of at least four character classes when passwords are changed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. The "minclass" option sets the minimum number of required classes of characters for the new password (digits, uppercase, lowercase, others).</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230362" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230363" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020170 - RHEL 8 must require the change of at least 8 characters when passwords are changed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. The "difok" option sets the number of characters in a password that must not be present in the old password.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230363" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230364" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020180 - RHEL 8 passwords must have a 24 hours/1 day minimum password lifetime restriction in /etc/shadow.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230364" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230365" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020190 - RHEL 8 passwords for new users or password changes must have a 24 hours/1 day minimum password lifetime restriction in /etc/login.defs.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230365" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230366" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020200 - RHEL 8 user account passwords must have a 60-day maximum password lifetime restriction.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If RHEL 8 does not limit the lifetime of passwords and force users to change their passwords, there is the risk that RHEL 8 passwords could be compromised.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230366" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230367" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020210 - RHEL 8 user account passwords must be configured so that existing passwords are restricted to a 60-day maximum lifetime.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If RHEL 8 does not limit the lifetime of passwords and force users to change their passwords, there is the risk that RHEL 8 passwords could be compromised.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230367" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230369" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020230 - RHEL 8 passwords must have a minimum of 15 characters.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised.

Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password. Use of more characters in a password helps to increase exponentially the time and/or resources required to compromise the password.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. Configurations are set in the "etc/security/pwquality.conf" file.

The "minlen", sometimes noted as minimum length, acts as a "score" of complexity based on the credit components of the "pwquality" module. By setting the credit components to a negative value, not only will those components be required, they will not count towards the total "score" of "minlen". This will enable "minlen" to require a 15-character minimum.

The DoD minimum password requirement is 15 characters.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230369" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230370" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020231 - RHEL 8 passwords for new users must have a minimum of 15 characters.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised.

Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password. Use of more characters in a password helps to increase exponentially the time and/or resources required to compromise the password.

The DoD minimum password requirement is 15 characters.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230370" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230371" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-020240 - RHEL 8 duplicate User IDs (UIDs) must not exist for interactive users.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>To ensure accountability and prevent unauthenticated access, interactive users must be identified and authenticated to prevent potential misuse and compromise of the system.

Interactive users include organizational employees or individuals the organization deems to have equivalent status of employees (e.g., contractors). Interactive users (and processes acting on behalf of users) must be uniquely identified and authenticated to all accesses, except for the following:

1) Accesses explicitly identified and documented by the organization. Organizations document specific user actions that can be performed on the information system without identification or authentication; and

2) Accesses that occur through authorized use of group authenticators without individual authentication. Organizations may require unique identification of individuals in group accounts (e.g., shared privilege accounts) or for detailed accountability of individual activity.

Satisfies: SRG-OS-000104-GPOS-00051, SRG-OS-000121-GPOS-00062, SRG-OS-000042-GPOS-00020</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258045" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230373" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020260 - RHEL 8 account identifiers (individuals, groups, roles, and devices) must be disabled after 35 days of inactivity.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potentially obtain undetected access to the system. Owners of inactive accounts will not notice if unauthorized access to their user account has been obtained.

RHEL 8 needs to track periods of inactivity and disable application identifiers after 35 days of inactivity.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230373" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230375" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020280 - All RHEL 8 passwords must contain at least one special character.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.

Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. Note that to require special characters without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230375" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230376" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020290 - RHEL 8 must prohibit the use of cached authentications after one day.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If cached authentication information is out-of-date, the validity of the authentication information may be questionable.

RHEL 8 includes multiple options for configuring authentication, but this requirement will be focus on the System Security Services Daemon (SSSD). By default sssd does not cache credentials.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230376" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230377" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020300 - RHEL 8 must prevent the use of dictionary words for passwords.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 allows the user to select passwords based on dictionary words, this increases the chances of password compromise by increasing the opportunity for successful guesses, and brute-force attacks.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230377" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230378" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020310 - RHEL 8 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Configuring the operating system to implement organization-wide security implementation guides and security checklists verifies compliance with federal standards and establishes a common security baseline across the DoD that reflects the most restrictive security posture consistent with operational requirements.

Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example, registry settings; account, file, and directory permission settings; and settings for functions, ports, protocols, services, and remote connections.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230378" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230380" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020330 - RHEL 8 must not allow accounts configured with blank or null passwords.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords should never be used in operational environments.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230380" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230381" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020340 - RHEL 8 must display the date and time of the last successful account logon upon logon.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Providing users with feedback on when account accesses last occurred facilitates user recognition and reporting of unauthorized account use.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230381" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230382" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020350 - RHEL 8 must display the date and time of the last successful account logon upon an SSH logon.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Providing users with feedback on when account accesses via SSH last occurred facilitates user recognition and reporting of unauthorized account use.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230382" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230383" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020351 - RHEL 8 must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Setting the most restrictive default permissions ensures that when new accounts are created, they do not have unnecessary access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230383" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230386" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030000 - The RHEL 8 audit system must be configured to audit the execution of privileged functions and prevent all software from executing at higher privilege levels than users executing the software.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts on organizations. Auditing the use of privileged functions is one way to detect such misuse and identify the risk from insider threats and the advanced persistent threat.

Satisfies: SRG-OS-000326-GPOS-00126, SRG-OS-000327-GPOS-00127</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230386" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230388" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030020 - The RHEL 8 System Administrator (SA) and Information System Security Officer (ISSO) (at a minimum) must be alerted of an audit processing failure event.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability, and system operation may be adversely affected.

Audit processing failures include software/hardware errors, failures in the audit capturing mechanisms, and audit storage capacity being reached or exceeded.

This requirement applies to each audit data storage repository (i.e., distinct information system component where audit records are stored), the centralized audit storage capacity of organizations (i.e., all audit data storage repositories combined), or both.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230388" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230389" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030030 - The RHEL 8 Information System Security Officer (ISSO) and System Administrator (SA) (at a minimum) must have mail aliases to be notified of an audit processing failure.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability, and system operation may be adversely affected.

Audit processing failures include software/hardware errors, failures in the audit capturing mechanisms, and audit storage capacity being reached or exceeded.

This requirement applies to each audit data storage repository (i.e., distinct information system component where audit records are stored), the centralized audit storage capacity of organizations (i.e., all audit data storage repositories combined), or both.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230389" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230390" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030040 - The RHEL 8 System must take appropriate action when an audit processing failure occurs.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability, and system operation may be adversely affected.

Audit processing failures include software/hardware errors, failures in the audit capturing mechanisms, and audit storage capacity being reached or exceeded.

This requirement applies to each audit data storage repository (i.e., distinct information system component where audit records are stored), the centralized audit storage capacity of organizations (i.e., all audit data storage repositories combined), or both.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230390" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230392" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030060 - The RHEL 8 audit system must take appropriate action when the audit storage volume is full.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is critical that when RHEL 8 is at risk of failing to process audit logs as required, it takes action to mitigate the failure. Audit processing failures include software/hardware errors; failures in the audit capturing mechanisms; and audit storage capacity being reached or exceeded. Responses to audit failure depend upon the nature of the failure mode.

When availability is an overriding concern, other approved actions in response to an audit failure are as follows: 

1) If the failure was caused by the lack of audit record storage capacity, RHEL 8 must continue generating audit records if possible (automatically restarting the audit service if necessary) and overwriting the oldest audit records in a first-in-first-out manner.

2) If audit records are sent to a centralized collection server and communication with this server is lost or the server fails, RHEL 8 must queue audit records locally until communication is restored or until the audit records are retrieved manually. Upon restoration of the connection to the centralized collection server, action should be taken to synchronize the local audit data with the collection server.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230392" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230393" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030061 - The RHEL 8 audit system must audit local events.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230393" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230394" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030062 - RHEL 8 must label all off-loaded audit logs before sending them to the central log server.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.

Enriched logging is needed to determine who, what, and when events occur on a system.  Without this, determining root cause of an event will be much more difficult.

When audit logs are not labeled before they are sent to a central log server, the audit data will not be able to be analyzed and tied back to the correct system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230394" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230395" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030063 - RHEL 8 must resolve audit information before writing to disk.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.

Enriched logging aids in making sense of who, what, and when events occur on a system.  Without this, determining root cause of an event will be much more difficult.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230395" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230396" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030070 - RHEL 8 audit logs must have a mode of 0600 or less permissive to prevent unauthorized read access.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029, SRG-OS-000206-GPOS-00084</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230396" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230397" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030080 - RHEL 8 audit logs must be owned by root to prevent unauthorized read access.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives.

The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029, SRG-OS-000206-GPOS-00084</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230397" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230398" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030090 - RHEL 8 audit logs must be group-owned by root to prevent unauthorized read access.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 activity.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230398" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230399" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030100 - RHEL 8 audit log directory must be owned by root to prevent unauthorized read access.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 activity.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230399" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230400" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030110 - RHEL 8 audit log directory must be group-owned by root to prevent unauthorized read access.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 activity.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230400" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230401" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030120 - RHEL 8 audit log directory must have a mode of 0700 or less permissive to prevent unauthorized read access.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 system activity.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230401" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230402" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030121 - RHEL 8 audit system must protect auditing rules from unauthorized change.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 system activity.

In immutable mode, unauthorized users cannot execute changes to the audit system to potentially hide malicious activity and then put the audit rules back.  A system reboot would be noticeable and a system administrator could then investigate the unauthorized changes.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230402" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230403" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030122 - RHEL 8 audit system must protect logon UIDs from unauthorized change.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality.

Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit RHEL 8 system activity.

In immutable mode, unauthorized users cannot execute changes to the audit system to potentially hide malicious activity and then put the audit rules back.  A system reboot would be noticeable and a system administrator could then investigate the unauthorized changes.

Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230403" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230404" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030130 - RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230404" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230405" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030140 - RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/security/opasswd.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, SRG-OS-000476-GPOS-00221</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230405" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230406" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030150 - RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/passwd.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230406" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230407" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030160 - RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/gshadow.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230407" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230408" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030170 - RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/group.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, CCI-002884, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230408" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230409" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030171 - RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/sudoers.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, CCI-002884, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230409" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230410" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030172 - RHEL 8 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/sudoers.d/.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000304-GPOS-00121, CCI-002884, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230410" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230411" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030180 - The RHEL 8 audit package must be installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.

Associating event types with detected events in RHEL 8 audit logs provides a means of investigating an attack, recognizing resource utilization or capacity thresholds, or identifying an improperly configured RHEL 8 system.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000038-GPOS-00016, SRG-OS-000039-GPOS-00017, SRG-OS-000040-GPOS-00018, SRG-OS-000041-GPOS-00019, SRG-OS-000042-GPOS-00021, SRG-OS-000051-GPOS-00024, SRG-OS-000054-GPOS-00025, SRG-OS-000122-GPOS-00063, SRG-OS-000254-GPOS-00095, SRG-OS-000255-GPOS-00096, SRG-OS-000337-GPOS-00129, SRG-OS-000348-GPOS-00136, SRG-OS-000349-GPOS-00137, SRG-OS-000350-GPOS-00138, SRG-OS-000351-GPOS-00139, SRG-OS-000352-GPOS-00140, SRG-OS-000353-GPOS-00141, SRG-OS-000354-GPOS-00142, SRG-OS-000358-GPOS-00145, SRG-OS-000365-GPOS-00152, SRG-OS-000392-GPOS-00172, SRG-OS-000475-GPOS-00220</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230411" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230412" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030190 - Successful/unsuccessful uses of the su command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "su" command allows a user to run commands with a substitute user and group ID.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000064-GPOS-0003, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000466-GPOS-00210</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230412" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230413" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030200 - The RHEL 8 audit system must be configured to audit any usage of the setxattr, fsetxattr, lsetxattr, removexattr, fremovexattr, and lremovexattr system calls.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). 

"Setxattr" is a system call used to set an extended attribute value.
"Fsetxattr" is a system call used to set an extended attribute value. This is used to set extended attributes on a file.
"Lsetxattr" is a system call used to set an extended attribute value. This is used to set extended attributes on a symbolic link.
"Removexattr" is a system call that removes extended attributes.
"Fremovexattr" is a system call that removes extended attributes. This is used for removal of extended attributes from a file.
"Lremovexattr" is a system call that removes extended attributes. This is used for removal of extended attributes from symbolic links.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. The performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000458-GPOS-00203, SRG-OS-000462-GPOS-00206, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212, SRG-OS-000471-GPOS-00215, SRG-OS-000474-GPOS-00219, SRG-OS-000466-GPOS-00210</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230413" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230418" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030250 - Successful/unsuccessful uses of the chage command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chage" command is used to change or view user password expiry information.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000468-GPOS-00212, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230418" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230419" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030260 - Successful/unsuccessful uses of the chcon command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chcon" command is used to change file SELinux security context.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000468-GPOS-00212, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230419" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230421" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030280 - Successful/unsuccessful uses of the ssh-agent in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "ssh-agent" is a program to hold private keys used for public key authentication.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230421" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230422" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030290 - Successful/unsuccessful uses of the passwd command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "passwd" command is used to change passwords for user accounts.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230422" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230423" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030300 - Successful/unsuccessful uses of the mount command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "mount" command is used to mount a filesystem.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230423" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230424" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030301 - Successful/unsuccessful uses of the umount command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "umount" command is used to unmount a filesystem.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230424" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230425" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030302 - Successful/unsuccessful uses of the mount syscall in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "mount" syscall is used to mount a filesystem.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230425" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230426" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030310 - Successful/unsuccessful uses of the unix_update in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. "Unix_update" is a helper program for the "pam_unix" module that updates the password for a given user. It is not intended to be run directly from the command line and logs a security violation if done so.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230426" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230427" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030311 - Successful/unsuccessful uses of postdrop in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "postdrop" command creates a file in the maildrop directory and copies its standard input to the file.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230427" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230428" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030312 - Successful/unsuccessful uses of postqueue in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "postqueue" command implements the Postfix user interface for queue management.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230428" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230429" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030313 - Successful/unsuccessful uses of semanage in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "semanage" command is used to configure certain elements of SELinux policy without requiring modification to or recompilation from policy sources.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230429" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230430" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030314 - Successful/unsuccessful uses of setfiles in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "setfiles" command is primarily used to initialize the security context fields (extended attributes) on one or more filesystems (or parts of them).  Usually it is initially run as part of the SELinux installation process (a step commonly known as labeling).

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230430" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230431" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030315 - Successful/unsuccessful uses of userhelper in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "userhelper" command is not intended to be run interactively.  "Userhelper" provides a basic interface to change a user's password, gecos information, and shell.  The main difference between this program and its traditional equivalents (passwd, chfn, chsh) is that prompts are written to standard out to make it easy for a graphical user interface wrapper to interface to it as a child process.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230431" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230432" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030316 - Successful/unsuccessful uses of setsebool in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "setsebool" command sets the current state of a particular SELinux boolean or a list of booleans to a given value.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230432" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230433" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030317 - Successful/unsuccessful uses of unix_chkpwd in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. The "unix_chkpwd" command is a helper program for the pam_unix module that verifies the password of the current user.  It also checks password and account expiration dates in shadow.  It is not intended to be run directly from the command line and logs a security violation if done so.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230433" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230434" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030320 - Successful/unsuccessful uses of the ssh-keysign in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "ssh-keysign" program is an SSH helper program for host-based authentication.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230434" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230435" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030330 - Successful/unsuccessful uses of the setfacl command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "setfacl" command is used to set file access control lists.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230435" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230436" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030340 - Successful/unsuccessful uses of the pam_timestamp_check command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "pam_timestamp_check" command is used to check if the default timestamp is valid.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230436" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230437" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030350 - Successful/unsuccessful uses of the newgrp command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "newgrp" command is used to change the current group ID during a login session.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230437" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230438" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030360 - Successful/unsuccessful uses of the init_module and finit_module system calls in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "init_module" and "finit_module" system calls are used to load a kernel module.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. The performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230438" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230439" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030361 - Successful/unsuccessful uses of the rename, unlink, rmdir, renameat, and unlinkat system calls in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "rename" system call will rename the specified files by replacing the first occurrence of expression in their name by replacement.

The "unlink" system call deletes a name from the filesystem. If that name was the last link to a file and no processes have the file open, the file is deleted and the space it was using is made available for reuse.
The "rmdir" system call removes empty directories.
The "renameat" system call renames a file, moving it between directories if required.
The "unlinkat" system call operates in exactly the same way as either "unlink" or "rmdir" except for the differences described in the manual page.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. Performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230439" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230444" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030370 - Successful/unsuccessful uses of the gpasswd command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "gpasswd" command is used to administer /etc/group and /etc/gshadow. Every group can have administrators, members and a password.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230444" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230446" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030390 - Successful/unsuccessful uses of the delete_module command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "delete_module" command is used to unload a kernel module.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230446" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230447" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030400 - Successful/unsuccessful uses of the crontab command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "crontab" command is used to maintain crontab files for individual users. Crontab is the program used to install, remove, or list the tables used to drive the cron daemon. This is similar to the task scheduler used in other operating systems.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230447" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230448" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030410 - Successful/unsuccessful uses of the chsh command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chsh" command is used to change the login shell.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230448" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230449" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030420 - Successful/unsuccessful uses of the truncate, ftruncate, creat, open, openat, and open_by_handle_at system calls in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "truncate" and "ftruncate" functions are used to truncate a file to a specified length. 

The "creat" system call is used to open and possibly create a file or device.
The "open" system call opens a file specified by a pathname. If the specified file does not exist, it may optionally be created by "open".
The "openat" system call opens a file specified by a relative pathname.
The "name_to_handle_at" and "open_by_handle_at" system calls split the functionality of "openat" into two parts: "name_to_handle_at" returns an opaque handle that corresponds to a specified file; "open_by_handle_at" opens the file corresponding to a handle returned by a previous call to "name_to_handle_at" and returns an open file descriptor.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. The performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000064-GPOS-00033</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230449" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230455" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030480 - Successful/unsuccessful uses of the chown, fchown, fchownat, and lchown system calls in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chown" command is used to change file owner and group.

The "fchown" system call is used to change the ownership of a file referred to by the open file descriptor.
The "fchownat" system call is used to change ownership of a file relative to a directory file descriptor.
The "lchown" system call is used to change the ownership of the file specified by a path, which does not dereference symbolic links.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. The performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000064-GPOS-00033, SRG-OS-000466-GPOS-00210</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230455" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230456" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030490 - Successful/unsuccessful uses of the chmod, fchmod, and fchmodat system calls in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chmod" system call changes the file mode bits of each given file according to mode, which can be either a symbolic representation of changes to make, or an octal number representing the bit pattern for the new mode bits.

The "fchmod" system call is used to change permissions of a file.
The "fchmodat" system call is used to change permissions of a file relative to a directory file descriptor.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

The system call rules are loaded into a matching engine that intercepts each syscall made by all programs on the system. Therefore, it is very important to use syscall rules only when absolutely necessary since these affect performance. The more rules, the bigger the performance hit. Performance can be helped, however, by combining syscalls into one rule whenever possible.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000064-GPOS-00033, SRG-OS-000466-GPOS-00210</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230456" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230462" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030550 - Successful/unsuccessful uses of the sudo command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "sudo" command allows a permitted user to execute a command as the superuser or another user, as specified by the security policy.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000466-GPOS-00210</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230462" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230463" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030560 - Successful/unsuccessful uses of the usermod command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "usermod" command modifies the system account files to reflect the changes that are specified on the command line.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000466-GPOS-00210</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230463" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230464" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030570 - Successful/unsuccessful uses of the chacl command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "chacl" command is used to change the access control list of a file or directory.

When a user logs on, the AUID is set to the UID of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to "-1". The AUID representation is an unsigned 32-bit integer, which equals "4294967295". The audit system interprets "-1", "4294967295", and "unset" in the same way.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000466-GPOS-00210</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230464" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230465" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030580 - Successful/unsuccessful uses of the kmod command in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter). The "kmod" command is used to control Linux Kernel modules.

The list of audited events is the set of events for which audits are to be generated. This set of events is typically a subset of the list of all events for which the system is capable of generating audit records.

DoD has defined the list of events for which RHEL 8 will provide an audit record generation capability as the following:

1) Successful and unsuccessful attempts to access, modify, or delete privileges, security objects, security levels, or categories of information (e.g., classification levels);

2) Access actions, such as successful and unsuccessful logon attempts, privileged activities or other system-level access, starting and ending time for user access to the system, concurrent logons from different workstations, successful and unsuccessful accesses to objects, all program initiations, and all direct access to the information system;

3) All account creations, modifications, disabling, and terminations; and 

4) All kernel module load, unload, and restart actions.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000471-GPOS-00216, SRG-OS-000477-GPOS-00222</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230465" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230467" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030600 - Successful/unsuccessful modifications to the lastlog file in RHEL 8 must generate an audit record.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

The list of audited events is the set of events for which audits are to be generated. This set of events is typically a subset of the list of all events for which the system is capable of generating audit records.

DoD has defined the list of events for which RHEL 8 will provide an audit record generation capability as the following:

1) Successful and unsuccessful attempts to access, modify, or delete privileges, security objects, security levels, or categories of information (e.g., classification levels);

2) Access actions, such as successful and unsuccessful logon attempts, privileged activities or other system-level access, starting and ending time for user access to the system, concurrent logons from different workstations, successful and unsuccessful accesses to objects, all program initiations, and all direct access to the information system;

3) All account creations, modifications, disabling, and terminations; and 

4) All kernel module load, unload, and restart actions.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000473-GPOS-00218</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230467" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230468" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030601 - RHEL 8 must enable auditing of processes that start prior to the audit daemon.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

If auditing is enabled late in the startup process, the actions of some startup processes may not be audited. Some audit systems also maintain state information only available if auditing is enabled before a given process is created.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

The list of audited events is the set of events for which audits are to be generated. This set of events is typically a subset of the list of all events for which the system is capable of generating audit records.

DoD has defined the list of events for which RHEL 8 will provide an audit record generation capability as the following:

1) Successful and unsuccessful attempts to access, modify, or delete privileges, security objects, security levels, or categories of information (e.g., classification levels);

2) Access actions, such as successful and unsuccessful logon attempts, privileged activities or other system-level access, starting and ending time for user access to the system, concurrent logons from different workstations, successful and unsuccessful accesses to objects, all program initiations, and all direct access to the information system;

3) All account creations, modifications, disabling, and terminations; and 

4) All kernel module load, unload, and restart actions.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215, SRG-OS-000473-GPOS-00218</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230468" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230469" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030602 - RHEL 8 must allocate an audit_backlog_limit of sufficient size to capture processes that start prior to the audit daemon.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.

If auditing is enabled late in the startup process, the actions of some startup processes may not be audited. Some audit systems also maintain state information only available if auditing is enabled before a given process is created.

Audit records can be generated from various components within the information system (e.g., module or policy filter).

Allocating an audit_backlog_limit of sufficient size is critical in maintaining a stable boot process.  With an insufficient limit allocated, the system is susceptible to boot failures and crashes.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230469" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230471" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030610 - RHEL 8 must allow only the Information System Security Manager (ISSM) (or individuals or roles appointed by the ISSM) to select which auditable events are to be audited.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without the capability to restrict the roles and individuals that can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming the audit log. Misconfigured audits may also make it more difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230471" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230472" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030620 - RHEL 8 audit tools must have a mode of 0755 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information.

RHEL 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user enjoys, to make access decisions regarding the access to audit tools.

Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230472" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230473" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030630 - RHEL 8 audit tools must be owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information.

RHEL 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user enjoys, to make access decisions regarding the access to audit tools.

Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.

Satisfies: SRG-OS-000256-GPOS-00097, SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230473" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230474" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030640 - RHEL 8 audit tools must be group-owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information.

RHEL 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user enjoys, to make access decisions regarding the access to audit tools.

Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.

Satisfies: SRG-OS-000256-GPOS-00097, SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230474" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230477" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030670 - RHEL 8 must have the packages required for offloading audit logs installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Information stored in one location is vulnerable to accidental or incidental deletion or alteration.

Off-loading is a common process in information systems with limited audit storage capacity.

RHEL 8 installation media provides "rsyslogd".  "rsyslogd" is a system utility providing support for message logging.  Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging.  Couple this utility with "gnutls" (which is a secure communications library implementing the SSL, TLS and DTLS protocols), and you have a method to securely encrypt and off-load auditing.

Rsyslog provides three ways to forward message: the traditional UDP transport, which is extremely lossy but standard; the plain TCP based transport, which loses messages only during certain situations but is widely available; and the RELP transport, which does not lose messages but is currently available only as part of the rsyslogd 3.15.0 and above.
Examples of each configuration:
UDP *.* @remotesystemname
TCP *.* @@remotesystemname
RELP *.* :omrelp:remotesystemname:2514
Note that a port number was given as there is no standard port for RELP.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230477" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230478" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030680 - RHEL 8 must have the packages required for encrypting offloaded audit logs installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Information stored in one location is vulnerable to accidental or incidental deletion or alteration.

Off-loading is a common process in information systems with limited audit storage capacity.

RHEL 8 installation media provides "rsyslogd".  "rsyslogd" is a system utility providing support for message logging.  Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging.  Couple this utility with "rsyslog-gnutls" (which is a secure communications library implementing the SSL, TLS and DTLS protocols), and you have a method to securely encrypt and off-load auditing.

Rsyslog provides three ways to forward message: the traditional UDP transport, which is extremely lossy but standard; the plain TCP based transport, which loses messages only during certain situations but is widely available; and the RELP transport, which does not lose messages but is currently available only as part of the rsyslogd 3.15.0 and above.
Examples of each configuration:
UDP *.* @remotesystemname
TCP *.* @@remotesystemname
RELP *.* :omrelp:remotesystemname:2514
Note that a port number was given as there is no standard port for RELP.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230478" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230480" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030700 - RHEL 8 must take appropriate action when the internal event queue is full.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Information stored in one location is vulnerable to accidental or incidental deletion or alteration.

Off-loading is a common process in information systems with limited audit storage capacity.

RHEL 8 installation media provides "rsyslogd".  "rsyslogd" is a system utility providing support for message logging.  Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging.  Couple this utility with "gnutls" (which is a secure communications library implementing the SSL, TLS and DTLS protocols), and you have a method to securely encrypt and off-load auditing.

Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230480" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230482" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-030720 - RHEL 8 must authenticate the remote logging server for off-loading audit logs.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Information stored in one location is vulnerable to accidental or incidental deletion or alteration.

Off-loading is a common process in information systems with limited audit storage capacity.

RHEL 8 installation media provides "rsyslogd".  "rsyslogd" is a system utility providing support for message logging.  Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging.  Couple this utility with "gnutls" (which is a secure communications library implementing the SSL, TLS and DTLS protocols), and you have a method to securely encrypt and off-load auditing.

"Rsyslog" supported authentication modes include:
anon - anonymous authentication
x509/fingerprint - certificate fingerprint authentication
x509/certvalid - certificate validation only
x509/name - certificate validation and subject name authentication.

Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258146" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230483" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030730 - RHEL 8 must take action when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If security personnel are not notified immediately when storage volume reaches 75 percent utilization, they are unable to plan for audit record storage capacity expansion.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230483" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230485" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030741 - RHEL 8 must disable the chrony daemon from acting as a server.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Sources outside the configured acceptable allowance (drift) may be inaccurate.

Minimizing the exposure of the server functionality of the chrony daemon diminishes the attack surface.

RHEL 8 utilizes the "timedatectl" command to view the status of the "systemd-timesyncd.service". The "timedatectl" status will display the local time, UTC, and the offset from UTC.

Note that USNO offers authenticated NTP service to DoD and U.S. Government agencies operating on the NIPR and SIPR networks. Visit https://www.usno.navy.mil/USNO/time/ntp/dod-customers for more information.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230485" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230486" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030742 - RHEL 8 must disable network management of the chrony daemon.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Sources outside the configured acceptable allowance (drift) may be inaccurate.

Not exposing the management interface of the chrony daemon on the network diminishes the attack space.

RHEL 8 utilizes the "timedatectl" command to view the status of the "systemd-timesyncd.service". The "timedatectl" status will display the local time, UTC, and the offset from UTC.

Note that USNO offers authenticated NTP service to DoD and U.S. Government agencies operating on the NIPR and SIPR networks. Visit https://www.usno.navy.mil/USNO/time/ntp/dod-customers for more information.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230486" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230487" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040000 - RHEL 8 must not have the telnet-server package installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

Examples of non-essential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission, but which cannot be disabled.

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.

The telnet service provides an unencrypted remote access service that does not provide for the confidentiality and integrity of user passwords or the remote session.

If a privileged user were to log on using this service, the privileged user password could be compromised.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230487" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230488" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040001 - RHEL 8 must not have any automated bug reporting tools installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

Examples of non-essential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission, but which cannot be disabled.

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230488" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230489" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040002 - RHEL 8 must not have the sendmail package installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

Examples of non-essential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission, but which cannot be disabled.

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230489" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230491" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040004 - RHEL 8 must enable mitigations against processor-based vulnerabilities.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

Examples of non-essential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission, but which cannot be disabled.

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.

Kernel page-table isolation is a kernel feature that mitigates the Meltdown security vulnerability and hardens the kernel against attempts to bypass kernel address space layout randomization (KASLR).</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230491" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230492" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040010 - RHEL 8 must not have the rsh-server package installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

The rsh-server service provides an unencrypted remote access service that does not provide for the confidentiality and integrity of user passwords or the remote session and has very weak authentication.

If a privileged user were to log on using this service, the privileged user password could be compromised.

Satisfies: SRG-OS-000095-GPOS-00049, SRG-OS-000074-GPOS-00042</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230492" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230494" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040021 - RHEL 8 must disable the asynchronous transfer mode (ATM) protocol.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Failing to disconnect unused protocols can result in a system compromise.

The Asynchronous Transfer Mode (ATM) is a protocol operating on network, data link, and physical layers, based on virtual circuits and virtual paths. Disabling ATM protects the system against exploitation of any laws in its implementation.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230494" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230495" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040022 - RHEL 8 must disable the controller area network (CAN) protocol.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Failing to disconnect unused protocols can result in a system compromise.

The Controller Area Network (CAN) is a serial communications protocol, which was initially developed for automotive and is now also used in marine, industrial, and medical applications. Disabling CAN protects the system against exploitation of any flaws in its implementation.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230495" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230496" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040023 - RHEL 8 must disable the stream control transmission protocol (SCTP).</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Failing to disconnect unused protocols can result in a system compromise.

The Stream Control Transmission Protocol (SCTP) is a transport layer protocol, designed to support the idea of message-oriented communication, with several streams of messages within one connection. Disabling SCTP protects the system against exploitation of any flaws in its implementation.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230496" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230497" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040024 - RHEL 8 must disable the transparent inter-process communication (TIPC) protocol.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Failing to disconnect unused protocols can result in a system compromise.

The Transparent Inter-Process Communication (TIPC) protocol is designed to provide communications between nodes in a cluster. Disabling TIPC protects the system against exploitation of any flaws in its implementation.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230497" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230498" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040025 - RHEL 8 must disable mounting of cramfs.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Removing support for unneeded filesystem types reduces the local attack surface of the server.

Compressed ROM/RAM file system (or cramfs) is a read-only file system designed for simplicity and space-efficiency.  It is mainly used in embedded and small-footprint systems.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230498" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230499" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040026 - RHEL 8 must disable IEEE 1394 (FireWire) Support.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The IEEE 1394 (FireWire) is a serial bus standard for high-speed real-time communication. Disabling FireWire protects the system against exploitation of any flaws in its implementation.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230499" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230502" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040070 - The RHEL 8 file system automounter must be disabled unless required.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Automatically mounting file systems permits easy introduction of unknown devices, thereby facilitating malicious activity.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230502" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230503" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040080 - RHEL 8 must be configured to disable USB mass storage.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>USB mass storage permits easy introduction of unknown devices, thereby facilitating malicious activity.

Satisfies: SRG-OS-000114-GPOS-00059, SRG-OS-000378-GPOS-00163</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230503" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230505" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040100 - A firewall must be installed on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>"Firewalld" provides an easy and effective way to block/limit remote access to the system via ports, services, and protocols.

Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access management difficult at best.

Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.

RHEL 8 functionality (e.g., RDP) must be capable of taking enforcement action if the audit reveals unauthorized activity. Automated control of remote access sessions allows organizations to ensure ongoing compliance with remote access policies by enforcing connection rules of remote access applications on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230505" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230507" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040111 - RHEL 8 Bluetooth must be disabled.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without protection of communications with wireless peripherals, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read, altered, or used to compromise the RHEL 8 operating system.

This requirement applies to wireless peripheral technologies (e.g., wireless mice, keyboards, displays, etc.) used with RHEL 8 systems. Wireless peripherals (e.g., Wi-Fi/Bluetooth/IR Keyboards, Mice, and Pointing Devices and Near Field Communications [NFC]) present a unique challenge by creating an open, unsecured port on a computer. Wireless peripherals must meet DoD requirements for wireless data transmission and be approved for use by the Authorizing Official (AO). Even though some wireless peripherals, such as mice and pointing devices, do not ordinarily carry information that need to be protected, modification of communications with these wireless peripherals may be used to compromise the RHEL 8 operating system. Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification.

Protecting the confidentiality and integrity of communications with wireless peripherals can be accomplished by physical means (e.g., employing physical barriers to wireless radio frequencies) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa. If the wireless peripheral is only passing telemetry data, encryption of the data may not be required.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230507" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230508" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040120 - RHEL 8 must mount /dev/shm with the nodev option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230508" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230509" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040121 - RHEL 8 must mount /dev/shm with the nosuid option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.
The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.
The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230509" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230510" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040122 - RHEL 8 must mount /dev/shm with the noexec option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230510" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230511" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040123 - RHEL 8 must mount /tmp with the nodev option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230511" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230512" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040124 - RHEL 8 must mount /tmp with the nosuid option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.
The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.
The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230512" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230513" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-040125 - RHEL 8 must mount /tmp with the noexec option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:257867" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230514" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040126 - RHEL 8 must mount /var/log with the nodev option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230514" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230515" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040127 - RHEL 8 must mount /var/log with the nosuid option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230515" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230516" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040128 - RHEL 8 must mount /var/log with the noexec option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230516" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230517" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040129 - RHEL 8 must mount /var/log/audit with the nodev option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230517" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230518" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040130 - RHEL 8 must mount /var/log/audit with the nosuid option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230518" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230519" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040131 - RHEL 8 must mount /var/log/audit with the noexec option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230519" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230520" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040132 - RHEL 8 must mount /var/tmp with the nodev option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230520" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230521" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040133 - RHEL 8 must mount /var/tmp with the nosuid option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230521" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230522" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-040134 - RHEL 8 must mount /var/tmp with the noexec option.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:248858" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230523" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-040135 - The RHEL 8 fapolicy module must be installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

Utilizing a whitelist provides a configuration management method for allowing the execution of only authorized software. Using only authorized software decreases risk by limiting the number of potential vulnerabilities. Verification of whitelisted software occurs prior to execution or at system startup.

User home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sharing of information with an SA through shared resources.

RHEL 8 ships with many optional packages. One such package is a file access policy daemon called "fapolicyd". "fapolicyd" is a userspace daemon that determines access rights to files based on attributes of the process and file. It can be used to either blacklist or whitelist processes or file access.

Proceed with caution with enforcing the use of this daemon. Improper configuration may render the system non-functional. The "fapolicyd" API is not namespace aware and can cause issues when launching or running containers.

Satisfies: SRG-OS-000368-GPOS-00154, SRG-OS-000370-GPOS-00155, SRG-OS-000480-GPOS-00232</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258089" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230525" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040150 - A firewall must be able to protect against or limit the effects of Denial of Service (DoS) attacks by ensuring RHEL 8 can implement rate-limiting measures on impacted network interfaces.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity.

This requirement addresses the configuration of RHEL 8 to mitigate the impact of DoS attacks that have occurred or are ongoing on system availability. For each system, known and potential DoS attacks must be identified and solutions for each type implemented. A variety of technologies exists to limit or, in some cases, eliminate the effects of DoS attacks (e.g., limiting processes or establishing memory partitions). Employing increased capacity and bandwidth, combined with service redundancy, may reduce the susceptibility to some DoS attacks.

Since version 0.6.0, "firewalld" has incorporated "nftables" as its backend support. Utilizing the limit statement in "nftables" can help to mitigate DoS attacks.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230525" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230526" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040160 - All RHEL 8 networked systems must have and implement SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. 

This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. 

Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa.

Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00190</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230526" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230527" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040161 - RHEL 8 must force a frequent session key renegotiation for SSH connections to the server.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. 

This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. 

Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa.

Session key regeneration limits the chances of a session key becoming compromised.

Satisfies: SRG-OS-000033-GPOS-00014, SRG-OS-000420-GPOS-00186, SRG-OS-000424-GPOS-00188</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230527" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230529" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040170 - The x86 Ctrl-Alt-Delete key sequence must be disabled on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>A locally logged-on user, who presses Ctrl-Alt-Delete when at the console, can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In a graphical user environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230529" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230530" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040171 - The x86 Ctrl-Alt-Delete key sequence in RHEL 8 must be disabled if a graphical user interface is installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>A locally logged-on user, who presses Ctrl-Alt-Delete, when at the console, can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In a graphical user environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230530" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230531" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040172 - The systemd Ctrl-Alt-Delete burst key sequence in RHEL 8 must be disabled.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>A locally logged-on user who presses Ctrl-Alt-Delete when at the console can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In a graphical user environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230531" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230532" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040180 - The debug-shell systemd service must be disabled on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The debug-shell requires no authentication and provides root privileges to anyone who has physical access to the machine.  While this feature is disabled by default, masking it adds an additional layer of assurance that it will not be enabled via a dependency in systemd.  This also prevents attackers with physical access from trivially bypassing security on the machine through valid troubleshooting configurations and gaining root access when the system is rebooted.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230532" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230533" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040190 - The Trivial File Transfer Protocol (TFTP) server package must not be installed if not required for RHEL 8 operational support.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If TFTP is required for operational support (such as the transmission of router configurations) its use must be documented with the Information System Security Officer (ISSO), restricted to only authorized personnel, and have access control rules established.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230533" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230534" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040200 - The root account must be the only account having unrestricted access to the RHEL 8 system.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If an account other than root also has a User Identifier (UID) of "0", it has root authority, giving that account unrestricted access to the entire operating system. Multiple accounts with a UID of "0" afford an opportunity for potential intruders to guess a password for a privileged account.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230534" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230535" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040210 - RHEL 8 must prevent IPv6 Internet Control Message Protocol (ICMP) redirect messages from being accepted.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230535" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230536" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040220 - RHEL 8 must not send Internet Control Message Protocol (ICMP) redirects.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages contain information from the system's route table, possibly revealing portions of the network topology.

There are notable differences between Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). There is only a directive to disable sending of IPv4 redirected packets. Refer to RFC4294 for an explanation of "IPv6 Node Requirements", which resulted in this difference between IPv4 and IPv6.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230536" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230537" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040230 - RHEL 8 must not respond to Internet Control Message Protocol (ICMP) echoes sent to a broadcast address.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Responding to broadcast ICMP echoes facilitates network mapping and provides a vector for amplification attacks.

There are notable differences between Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). IPv6 does not implement the same method of broadcast as IPv4. Instead, IPv6 uses multicast addressing to the all-hosts multicast group. Refer to RFC4294 for an explanation of "IPv6 Node Requirements", which resulted in this difference between IPv4 and IPv6.
The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230537" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230538" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040240 - RHEL 8 must not forward IPv6 source-routed packets.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when forwarding is enabled and the system is functioning as a router.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230538" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230539" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040250 - RHEL 8 must not forward IPv6 source-routed packets by default.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when forwarding is enabled and the system is functioning as a router.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230539" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230540" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040260 - RHEL 8 must not enable IPv6 packet forwarding unless the system is a router.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unnecessarily transmitted across the network.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230540" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230541" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040261 - RHEL 8 must not accept router advertisements on all IPv6 interfaces.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unnecessarily transmitted across the network.

An illicit router advertisement message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230541" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230542" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040262 - RHEL 8 must not accept router advertisements on all IPv6 interfaces by default.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unnecessarily transmitted across the network.

An illicit router advertisement message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230542" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230543" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040270 - RHEL 8 must not allow interfaces to perform Internet Control Message Protocol (ICMP) redirects by default.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages contain information from the system's route table, possibly revealing portions of the network topology.

There are notable differences between Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). There is only a directive to disable sending of IPv4 redirected packets. Refer to RFC4294 for an explanation of "IPv6 Node Requirements", which resulted in this difference between IPv4 and IPv6.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230543" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230544" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040280 - RHEL 8 must ignore IPv6 Internet Control Message Protocol (ICMP) redirect messages.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230544" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230545" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040281 - RHEL 8 must disable access to network bpf syscall from unprivileged processes.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230545" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230546" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040282 - RHEL 8 must restrict usage of ptrace to descendant  processes.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230546" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230547" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040283 - RHEL 8 must restrict exposed kernel pointer addresses access.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230547" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230548" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040284 - RHEL 8 must disable the use of user namespaces.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230548" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230549" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040285 - RHEL 8 must use reverse path filtering on all IPv4 interfaces.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230549" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230550" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040290 - RHEL 8 must be configured to prevent unrestricted mail relaying.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If unrestricted mail relaying is permitted, unauthorized senders could use this host as a mail relay for the purpose of sending spam or other unauthorized activity.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230550" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230553" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040320 - The graphical display manager must not be installed on RHEL 8 unless approved.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Internet services that are not required for system or application processes must not be active to decrease the attack surface of the system. Graphical display managers have a long history of security vulnerabilities and must not be used, unless approved and documented.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230553" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230554" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040330 - RHEL 8 network interfaces must not be in promiscuous mode.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Network interfaces in promiscuous mode allow for the capture of all network traffic visible to the system. If unauthorized individuals can access these applications, it may allow them to collect information such as logon IDs, passwords, and key exchanges between systems.

If the system is being used to perform a network troubleshooting function, the use of these tools must be documented with the Information System Security Officer (ISSO) and restricted to only authorized personnel.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230554" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230555" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040340 - RHEL 8 remote X connections for interactive users must be disabled unless to fulfill documented and validated mission requirements.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The security risk of using X11 forwarding is that the client's X11 display server may be exposed to attack when the SSH client requests forwarding.  A system administrator may have a stance in which they want to protect clients that may expose themselves to attack by unwittingly requesting X11 forwarding, which can warrant a "no" setting.

X11 forwarding should be enabled with caution. Users with the ability to bypass file permissions on the remote host (for the user's X11 authorization database) can access the local X11 display through the forwarded connection. An attacker may then be able to perform activities such as keystroke monitoring if the ForwardX11Trusted option is also enabled.

If X11 services are not required for the system's intended function, they should be disabled or restricted as appropriate to the system’s needs.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230555" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230556" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040341 - The RHEL 8 SSH daemon must prevent remote hosts from connecting to the proxy display.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>When X11 forwarding is enabled, there may be additional exposure to the server and client displays if the sshd proxy display is configured to listen on the wildcard address.  By default, sshd binds the forwarding server to the loopback address and sets the hostname part of the DIPSLAY environment variable to localhost.  This prevents remote hosts from connecting to the proxy display.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230556" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230557" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040350 - If the Trivial File Transfer Protocol (TFTP) server is required, the RHEL 8 TFTP daemon must be configured to operate in secure mode.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Restricting TFTP to a specific directory prevents remote users from copying, transferring, or overwriting system files.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230557" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230558" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040360 - A File Transfer Protocol (FTP) server package must not be installed unless mission essential on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The FTP service provides an unencrypted remote access that does not provide for the confidentiality and integrity of user passwords or the remote session. If a privileged user were to log on using this service, the privileged user password could be compromised. SSH or other encrypted file transfer methods must be used in place of this service.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230558" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230559" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040370 - The gssproxy package must not be installed unless mission essential on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

The gssproxy package is a proxy for GSS API credential handling and could expose secrets on some networks. It is not needed for normal function of the OS.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230559" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230560" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040380 - The iprutils package must not be installed unless mission essential on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

The iprutils package provides a suite of utilities to manage and configure SCSI devices supported by the ipr SCSI storage device driver.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230560" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:230561" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040390 - The tuned package must not be installed unless mission essential on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).

The tuned package contains a daemon that tunes the system settings dynamically. It does so by monitoring the usage of several system components periodically. Based on that information, components will then be put into lower or higher power savings modes to adapt to the current usage. The tuned package is not needed for normal OS operations.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:230561" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:237640" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010163 - The krb5-server package must not be installed on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules.

Currently, Kerberos does not utilize FIPS 140-2 cryptography.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:237640" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:237641" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010382 - RHEL 8 must restrict privilege elevation to authorized personnel.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The sudo command allows a user to execute programs with elevated (administrator) privileges. It prompts the user for their password and confirms your request to execute a command by checking a file, called sudoers. If the "sudoers" file is not configured correctly, any user defined on the system can initiate privileged actions on the target system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:237641" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:237642" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010383 - RHEL 8 must use the invoking user's password for privilege escalation when using "sudo".</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The sudoers security policy requires that users authenticate themselves before they can use sudo. When sudoers requires authentication, it validates the invoking user's credentials. If the rootpw, targetpw, or runaspw flags are defined and not disabled, by default the operating system will prompt the invoking user for the "root" user password. 
For more information on each of the listed configurations, reference the sudoers(5) manual page.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:237642" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:237643" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010384 - RHEL 8 must require re-authentication when using the "sudo" command.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without re-authentication, users may access resources or perform tasks for which they do not have authorization. 

When operating systems provide the capability to escalate a functional capability, it is critical the organization requires the user to re-authenticate when using the "sudo" command.

If the value is set to an integer less than 0, the user's time stamp will not expire and the user will not have to re-authenticate for privileged actions until the user's session is terminated.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:237643" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244519" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010049 - RHEL 8 must display a banner before granting local or remote access to the system via a graphical user logon.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance.

System use notifications are required only for access via logon interfaces with human users and are not required when such human interfaces do not exist.

Satisfies: SRG-OS-000023-GPOS-00006, SRG-OS-000228-GPOS-00088</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244519" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244523" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010152 - RHEL 8 operating systems must require authentication upon booting into emergency mode.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If the system does not require valid root authentication before it boots into emergency or rescue mode, anyone who invokes emergency or rescue mode is granted privileged access to all files on the system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244523" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244524" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010159 - The RHEL 8 pam_unix.so module must be configured in the system-auth file to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised.

RHEL 8 systems utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules. 

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244524" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244525" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-010201 - The RHEL 8 SSH daemon must be configured with a timeout interval.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Terminating an idle SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminating an idle SSH session will also free up resources committed by the managed network element.

Terminating network connections associated with communications sessions includes, for example, de-allocating associated TCP/IP address/port pairs at the operating system level and de-allocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean that the operating system terminates all sessions or network access; it only ends the inactive session and releases the resources associated with that session.

RHEL 8 utilizes /etc/ssh/sshd_config for configurations of OpenSSH. Within the sshd_config the product of the values of "ClientAliveInterval" and "ClientAliveCountMax" are used to establish the inactivity threshold. The "ClientAliveInterval" is a timeout interval in seconds after which if no data has been received from the client, sshd will send a message through the encrypted channel to request a response from the client. The "ClientAliveCountMax" is the number of client alive messages that may be sent without sshd receiving any messages back from the client. If this threshold is met, sshd will disconnect the client. For more information on these settings and others, refer to the sshd_config man pages.

Satisfies: SRG-OS-000163-GPOS-00072, SRG-OS-000126-GPOS-00066, SRG-OS-000279-GPOS-00109</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:257996" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244527" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010472 - RHEL 8 must have the packages required to use the hardware random number generator entropy gatherer service.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The most important characteristic of a random number generator is its randomness, namely its ability to deliver random numbers that are impossible to predict.  Entropy in computer security is associated with the unpredictability of a source of randomness.  The random source with high entropy tends to achieve a uniform distribution of random values.  Random number generators are one of the most important building blocks of cryptosystems.  

The rngd service feeds random data from hardware device to kernel random device. Quality (non-predictable) random number generation is important for several security functions (i.e., ciphers).</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244527" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244528" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010522 - The RHEL 8 SSH daemon must not allow GSSAPI authentication, except to fulfill documented and validated mission requirements.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Configuring this setting for the SSH daemon provides additional assurance that remote logon via SSH will require a password, even in the event of misconfiguration elsewhere.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244528" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244529" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010544 - RHEL 8 must use a separate file system for /var/tmp.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244529" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244530" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010572 - RHEL 8 must prevent files with the setuid and setgid bit set from being executed on the /boot/efi directory.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244530" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244536" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-020032 - RHEL 8 must disable the user list at logon for graphical user interfaces.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Leaving the user list enabled is a security risk since it allows anyone with physical access to the system to enumerate known user accounts without authenticated access to the system.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258033" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244539" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020082 - RHEL 8 must prevent a user from overriding the screensaver lock-enabled setting for the graphical user interface.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature of the absence. Rather than relying on the user to manually lock their operating system session prior to vacating the vicinity, operating systems need to be able to identify when a user's session has idled and take action to initiate the session lock.

The session lock is implemented at the point where session activity can be determined and/or controlled.

Implementing session settings will have little value if a user is able to manipulate these settings from the defaults prescribed in the other requirements of this implementation guide.

Locking these settings from non-privileged users is crucial to maintaining a protected baseline.

Satisfies: SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012, SRG-OS-000480-GPOS-00227</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244539" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244541" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020332 - RHEL 8 must not allow blank or null passwords in the password-auth file.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords should never be used in operational environments.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244541" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244542" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-030181 - RHEL 8 audit records must contain information to establish what type of events occurred, the source of events, where events occurred, and the outcome of events.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without establishing what type of events occurred, the source of events, where events occurred, and the outcome of events, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack.

Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked.

Associating event types with detected events in RHEL 8 audit logs provides a means of investigating an attack, recognizing resource utilization or capacity thresholds, or identifying an improperly configured RHEL 8 system.

Satisfies: SRG-OS-000062-GPOS-00031, SRG-OS-000037-GPOS-00015, SRG-OS-000038-GPOS-00016, SRG-OS-000039-GPOS-00017, SRG-OS-000040-GPOS-00018, SRG-OS-000041-GPOS-00019, SRG-OS-000042-GPOS-00021, SRG-OS-000051-GPOS-00024, SRG-OS-000054-GPOS-00025, SRG-OS-000122-GPOS-00063, SRG-OS-000254-GPOS-00095, SRG-OS-000255-GPOS-00096, SRG-OS-000337-GPOS-00129, SRG-OS-000348-GPOS-00136, SRG-OS-000349-GPOS-00137, SRG-OS-000350-GPOS-00138, SRG-OS-000351-GPOS-00139, SRG-OS-000352-GPOS-00140, SRG-OS-000353-GPOS-00141, SRG-OS-000354-GPOS-00142, SRG-OS-000358-GPOS-00145, SRG-OS-000365-GPOS-00152, SRG-OS-000392-GPOS-00172, SRG-OS-000475-GPOS-00220</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258152" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244543" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-030731 - RHEL 8 must notify the System Administrator (SA) and Information System Security Officer (ISSO) (at a minimum) when allocated audit record storage volume 75 percent utilization.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If security personnel are not notified immediately when storage volume reaches 75 percent utilization, they are unable to plan for audit record storage capacity expansion.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244543" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244544" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-040101 - A firewall must be active on RHEL 8.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>"Firewalld" provides an easy and effective way to block/limit remote access to the system via ports, services, and protocols.

Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access management difficult at best.

Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless.
RHEL 8 functionality (e.g., RDP) must be capable of taking enforcement action if the audit reveals unauthorized activity. Automated control of remote access sessions allows organizations to ensure ongoing compliance with remote access policies by enforcing connection rules of remote access applications on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:257936" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244545" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040136 - The RHEL 8 fapolicy module must be enabled.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

Utilizing a whitelist provides a configuration management method for allowing the execution of only authorized software. Using only authorized software decreases risk by limiting the number of potential vulnerabilities. Verification of whitelisted software occurs prior to execution or at system startup.

User home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sharing of information with an SA through shared resources.

RHEL 8 ships with many optional packages. One such package is a file access policy daemon called "fapolicyd". "fapolicyd" is a userspace daemon that determines access rights to files based on attributes of the process and file. It can be used to either blacklist or whitelist processes or file access.

Proceed with caution with enforcing the use of this daemon. Improper configuration may render the system non-functional. The "fapolicyd" API is not namespace aware and can cause issues when launching or running containers.

Satisfies: SRG-OS-000368-GPOS-00154, SRG-OS-000370-GPOS-00155, SRG-OS-000480-GPOS-00232</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244545" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244547" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-040139 - RHEL 8 must have the USBGuard installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity.
Peripherals include, but are not limited to, such devices as flash drives, external storage, and printers.
A new feature that RHEL 8 provides is the USBGuard software framework. The USBguard-daemon is the main component of the USBGuard software framework. It runs as a service in the background and enforces the USB device authorization policy for all USB devices. The policy is defined by a set of rules using a rule language described in the usbguard-rules.conf file. The policy and the authorization state of USB devices can be modified during runtime using the usbguard tool.

The System Administrator (SA) must work with the site Information System Security Officer (ISSO) to determine a list of authorized peripherals and establish rules within the USBGuard software framework to allow only authorized devices.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258035" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244548" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-040141 - RHEL 8 must enable the USBGuard.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity.

Peripherals include, but are not limited to, such devices as flash drives, external storage, and printers.

A new feature that RHEL 8 provides is the USBGuard software framework. The USBguard-daemon is the main component of the USBGuard software framework. It runs as a service in the background and enforces the USB device authorization policy for all USB devices. The policy is defined by a set of rules using a rule language described in the usbguard-rules.conf file. The policy and the authorization state of USB devices can be modified during runtime using the usbguard tool.

The System Administrator (SA) must work with the site Information System Security Officer (ISSO) to determine a list of authorized peripherals and establish rules within the USBGuard software framework to allow only authorized devices.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258036" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244549" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040159 - All RHEL 8 networked systems must have SSH installed.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. 

This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. 

Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa.

Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00190</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244549" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244550" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040209 - RHEL 8 must prevent IPv4 Internet Control Message Protocol (ICMP) redirect messages from being accepted.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244550" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244551" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040239 - RHEL 8 must not forward IPv4 source-routed packets.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when forwarding is enabled and the system is functioning as a router.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244551" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244552" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040249 - RHEL 8 must not forward IPv4 source-routed packets by default.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when forwarding is enabled and the system is functioning as a router.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244552" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244553" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040279 - RHEL 8 must ignore IPv4 Internet Control Message Protocol (ICMP) redirect messages.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244553" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:244554" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040286 - RHEL 8 must enable hardening for the Berkeley Packet Filter Just-in-time compiler.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

Enabling hardening for the Berkeley Packet Filter (BPF) Just-in-time (JIT) compiler aids in mitigating JIT spraying attacks. Setting the value to "2" enables JIT hardening for all users.

The sysctl --system command will load settings from all system configuration files. All configuration files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple files specify the same option, the entry in the file with the lexicographically latest name will take precedence. Files are read from directories in the following list from top to bottom. Once a file of a given filename is loaded, any file of the same name in subsequent directories is ignored.
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
/usr/local/lib/sysctl.d/*.conf
/usr/lib/sysctl.d/*.conf
/lib/sysctl.d/*.conf
/etc/sysctl.conf</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:244554" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251706" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010121 - The RHEL 8 operating system must not have accounts configured with blank or null passwords.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords should never be used in operational environments.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:251706" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251707" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010331 - RHEL 8 library directories must have mode 755 or less permissive.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:251707" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251708" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010341 - RHEL 8 library directories must be owned by root.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:251708" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251709" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-010351 - RHEL 8 library directories must be group-owned by root or a system account.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to RHEL 8 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:251709" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251712" version="2" class="compliance">
          <metadata>
            <title>RHEL-08-010385 - The RHEL 8 operating system must not be configured to bypass password requirements for privilege escalation.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Without re-authentication, users may access resources or perform tasks for which they do not have authorization. 

When operating systems provide the capability to escalate a functional capability, it is critical the user re-authenticate.

Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:258118" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251713" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020101 - RHEL 8 must ensure the password complexity module is enabled in the system-auth file.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

RHEL 8 uses "pwquality" as a mechanism to enforce password complexity. This is set in both:
/etc/pam.d/password-auth
/etc/pam.d/system-auth</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:251713" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251714" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020102 - RHEL 8 systems below version 8.4 must ensure the password complexity module in the system-auth file is configured for three retries or less.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

RHEL 8 uses "pwquality" as a mechanism to enforce password complexity. This is set in both:
/etc/pam.d/password-auth
/etc/pam.d/system-auth

By limiting the number of attempts to meet the pwquality module complexity requirements before returning with an error, the system will audit abnormal attempts at password changes.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:251714" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251715" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020103 - RHEL 8 systems below version 8.4 must ensure the password complexity module in the password-auth file is configured for three retries or less.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

RHEL 8 uses "pwquality" as a mechanism to enforce password complexity. This is set in both:
/etc/pam.d/password-auth
/etc/pam.d/system-auth

By limiting the number of attempts to meet the pwquality module complexity requirements before returning with an error, the system will audit abnormal attempts at password changes.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:251715" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:251718" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-040321 - The graphical display manager must not be the default target on RHEL 8 unless approved.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Internet services that are not required for system or application processes must not be active to decrease the attack surface of the system. Graphical display managers have a long history of security vulnerabilities and must not be used, unless approved and documented.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:251718" />
          </criteria>
        </definition>
        <definition id="oval:mil.disa.stig.rhel8os:def:257258" version="1" class="compliance">
          <metadata>
            <title>RHEL-08-020035 - RHEL 8 must terminate idle user sessions.</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <description>Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended.</description>
          </metadata>
          <criteria>
            <extend_definition definition_ref="oval:mil.disa.stig.defs:def:257258" />
          </criteria>
        </definition>
      </definitions>
      <tests>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:230345" version="1" check_existence="all_exist" check="all" comment="check /etc/security/faillock.conf for the even_deny_root setting">
          <object object_ref="oval:mil.disa.stig.ind:obj:230345" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:10001201" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv6.conf.all.disable_ipv6 setting in sysctl configuration files is set to 1, and nothing else">
          <object object_ref="oval:mil.disa.stig.ind:obj:10001203" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:10001202" version="1" check_existence="at_least_one_exists" check="all" comment="ipv6.disable=1 in the kernel cmdline">
          <object object_ref="oval:mil.disa.stig.ind:obj:10001204" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23022100" version="3" check_existence="at_least_one_exists" check="all" state_operator="OR" comment="The RHEL 8 minor version is supported.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23022100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000010" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000012" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23022300" version="1" check_existence="all_exist" check="all" comment="fips_enabled == 1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23022300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23022301" version="1" check_existence="all_exist" check="all" comment="/boot/grub2/grubenv:kernelopts contains fips=1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23022301" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23022800" version="1" check="all" comment="/etc/rsyslog.conf: auth.* is configured to be logged">
          <object object_ref="oval:mil.disa.stig.ind:obj:23022800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23022801" version="1" check="all" comment="/etc/rsyslog.conf: authpriv.* is configured to be logged">
          <object object_ref="oval:mil.disa.stig.ind:obj:23022801" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23022802" version="1" check="all" comment="/etc/rsyslog.conf: daemon.* is configured to be logged">
          <object object_ref="oval:mil.disa.stig.ind:obj:23022802" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023100" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/login.defs:ENCRYPT_METHOD &gt;= SHA512">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23023100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023200" version="1" check_existence="none_exist" check="all" comment="No active password hash in /etc/shadow has a prefix other than '$6'.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023201" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023300" version="4" check_existence="any_exist" check="all" comment="/etc/login.defs: SHA_CRYPT_MIN_ROUNDS, if set, is set to 100000 or greater">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23023300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023301" version="4" check_existence="any_exist" check="all" comment="/etc/login.defs: SHA_CRYPT_MAX_ROUNDS, if set, is set to 100000 or greater">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023301" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23023300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023302" version="1" check="all" comment="/etc/login.defs: SHA_CRYPT_MIN_ROUNDS is set">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023303" version="1" check="all" comment="/etc/login.defs: SHA_CRYPT_MAX_ROUNDS is set">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023301" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023400" version="1" check_existence="all_exist" check="all" comment="/boot/efi/EFI/redhat/grub.cfg:superusers exists and has a name.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23023400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023401" version="1" check_existence="all_exist" check="all" comment="/boot/efi/EFI/redhat/user.cfg:GRUB2_PASSWORD exists and has a PBKDF2/SHA512 password assigned.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023401" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23023401" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023500" version="1" check_existence="all_exist" check="all" comment="/boot/grub2/grub.cfg:superusers exists and has a name.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23023400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023501" version="1" check_existence="all_exist" check="all" comment="/boot/grub2/user.cfg:GRUB2_PASSWORD exists and has a PBKDF2/SHA512 password assigned.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023501" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23023401" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023600" version="1" check_existence="at_least_one_exists" check="all" comment="/usr/lib/systemd/system/rescue.service:ExecStart is set to -/usr/lib/systemd/systemd-sulogin-shell rescue">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23023700" version="1" check_existence="only_one_exists" check="all" comment="/etc/pam.d/password-auth:password includes pam_unix.so sha512">
          <object object_ref="oval:mil.disa.stig.ind:obj:23023700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23024000" version="2" check_existence="only_one_exists" check="all" comment="selinux is enforcing">
          <object object_ref="oval:mil.disa.stig.ind:obj:23024000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23024000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23024001" version="2" check_existence="only_one_exists" check="all" comment="/etc/selinux/config:SELINUX=enforcing">
          <object object_ref="oval:mil.disa.stig.ind:obj:23024001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23024001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23024400" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/ssh/sshd_config:ClientAliveCountMax = 1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23024400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23025300" version="1" check="all" comment="/etc/sysconfig/sshd: SSH_USE_STRONG_RNG=32">
          <object object_ref="oval:mil.disa.stig.ind:obj:23025300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23025501" version="1" check="all" comment="/etc/crypto-policies/back-ends/opensslcnf.config:MinProtocol == TLSv1.2 or newer.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23025501" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23025501" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23025502" version="1" check="all" comment="/etc/crypto-policies/back-ends/opensslcnf.config:TLS.MinProtocol == TLSv1.2 or newer.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23025502" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23025501" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23025503" version="1" check="all" comment="/etc/crypto-policies/back-ends/opensslcnf.config:DTLS.MinProtocol == DTLSv1.2 or newer.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23025503" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23025502" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026400" version="1" check_existence="all_exist" check="all" comment="Every /etc/yum.repos.d/*.repo:[{reponame}] has a gpgcheck set to 1.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23026400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026401" version="1" check_existence="all_exist" check="none satisfy" comment="No /etc/yum.repos.d/*.repo:[{reponame}] has a gpgcheck set to 0.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23026401" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026500" version="2" check="all" comment="/etc/dnf/dnf.conf: localpkg_gpgcheck is set to True, 1, or yes.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000021" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026601" version="1" check_existence="at_least_one_exists" check="all" comment="kernel.kexec_load_disabled setting in sysctl configuration files is set to 1, and nothing else">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026603" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026701" version="1" check_existence="at_least_one_exists" check="all" comment="fs.protected_symlinks setting in sysctl configuration files is set to 1, and nothing else, and there are no conflicting settings in other files">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026703" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026801" version="3" check_existence="at_least_one_exists" check="all" comment="fs.protected_hardlinks setting in /etc/sysctl.d/99-sysctl.conf is set to 1, and nothing else, and there are no conflicting settings in other files">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026803" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23026801" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026900" version="1" check_existence="at_least_one_exists" check="all" comment="kernel.dmesg_restrict setting in admin sysctl configuration files is set to 1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23026900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026901" version="1" check_existence="none_exist" check="all" comment="kernel.dmesg_restrict setting in admin sysctl configuration files is missing">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23026902" version="1" check_existence="at_least_one_exists" check="all" comment="kernel.dmesg_restrict setting in system sysctl configuration files is set to 1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23026901" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23026900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027001" version="1" check_existence="at_least_one_exists" check="all" comment="kernel.perf_event_paranoid setting in /etc/sysctl.d/99-*.conf is set to 2, and nothing else, and there are no conflicting settings in other files">
          <object object_ref="oval:mil.disa.stig.ind:obj:23027003" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000004" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027100" version="1" check_existence="none_exist" check="all" comment="'NOPASSWD' does not exist in /etc/sudoers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23027100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027101" version="1" check_existence="none_exist" check="all" comment="'NOPASSWD' does not exist in /etc/sudoers.d">
          <object object_ref="oval:mil.disa.stig.ind:obj:23027101" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027200" version="1" check_existence="none_exist" check="all" comment="'!authenticate' does not exist in /etc/sudoers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23027200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027201" version="1" check_existence="none_exist" check="all" comment="'!authenticate' does not exist in /etc/sudoers.d">
          <object object_ref="oval:mil.disa.stig.ind:obj:23027201" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027800" version="1" check="all" comment="BLS options contain vsyscall=none">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23027800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027801" version="1" check="all" comment="The GRUB_CMDLINE_LINUX arguments in /etc/default/grub contain vsyscall=none">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779301" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23027800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027900" version="1" check="all" comment="BLS options contain slub_debug=P">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23027900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23027901" version="1" check="all" comment="The GRUB_CMDLINE_LINUX arguments in /etc/default/grub contain slub_debug=P">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779301" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23027900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23028000" version="1" check_existence="at_least_one_exists" check="all" comment="kernel.randomize_va_space setting in admin sysctl configuration files is set to 2">
          <object object_ref="oval:mil.disa.stig.ind:obj:23028000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23028000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23028001" version="1" check_existence="none_exist" check="all" comment="kernel.randomize_va_space setting in admin sysctl configuration files is missing">
          <object object_ref="oval:mil.disa.stig.ind:obj:23028000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23028002" version="1" check_existence="at_least_one_exists" check="all" comment="kernel.randomize_va_space setting in system sysctl configuration files is set to 2">
          <object object_ref="oval:mil.disa.stig.ind:obj:23028001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23028000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23028100" version="1" check="all" comment="/etc/dnf/dnf.conf: clean_requirements_on_remove is set to True, 1 or yes">
          <object object_ref="oval:mil.disa.stig.ind:obj:23028100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23028200" version="1" check="all" comment="/etc/selinux/config: SELINUXTYPE=targeted">
          <object object_ref="oval:mil.disa.stig.ind:obj:23028200" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23028200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23028800" version="2" check_existence="at_least_one_exists" check="all" comment="/etc/ssh/sshd_config or /etc/ssh/sshd_config.d/*:StrictModes == yes">
          <object object_ref="oval:mil.disa.stig.ind:obj:23028802" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000016" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23029000" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/ssh/sshd_config:IgnoreUserKnownHosts == yes">
          <object object_ref="oval:mil.disa.stig.ind:obj:23029000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000016" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23029100" version="1" check_existence="all_exist" check="all" comment="/etc/ssh/sshd_config:KerberosAuthentication == no">
          <object object_ref="oval:mil.disa.stig.ind:obj:23029100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000017" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23029201" version="1" check_existence="all_exist" check="all" comment="There is a separate file system configured for /var.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23029201" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23029301" version="1" check_existence="all_exist" check="all" comment="There is a separate file system configured for /var/log.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23029301" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23029401" version="1" check_existence="all_exist" check="all" comment="There is a separate file system configured for audit data directory.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23029401" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23029500" version="1" check_existence="all_exist" check="all" comment="There is a separate file system configured for /tmp.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23029500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23029600" version="2" check_existence="at_least_one_exists" check="all" comment="/etc/ssh/sshd_config:PermitRootLogin == no">
          <object object_ref="oval:mil.disa.stig.ind:obj:23029602" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000017" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23030001" version="1" check_existence="any_exist" check="all" comment="If /boot is configured in /etc/fstab, it is configured with the nosuid option">
          <object object_ref="oval:mil.disa.stig.ind:obj:23030001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:2303001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23030101" version="1" check_existence="any_exist" check="all" comment="Device files are configured in /etc/fstab to use the nodev option.  Mounts on '/' are ignored.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23030101" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23030100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23030600" version="1" check_existence="any_exist" check="all" comment="all nfs entries in /etc/fstab have noexec">
          <object object_ref="oval:mil.disa.stig.ind:obj:23030600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23030600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23030601" version="1" check_existence="any_exist" check="all" comment="all nfs entries in /etc/mtab have noexec">
          <object object_ref="oval:mil.disa.stig.ind:obj:23030601" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23030600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031100" version="1" check_existence="at_least_one_exists" check="all" comment="kernel.core_pattern setting in admin sysctl configuration files is set to 1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23031100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031101" version="1" check_existence="none_exist" check="all" comment="kernel.core_pattern setting in admin sysctl configuration files is missing">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031102" version="1" check_existence="at_least_one_exists" check="all" comment="kernel.core_pattern setting in system sysctl configuration files is set to 1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031101" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23031100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031300" version="2" check="all" comment="For the global domain, core is set to 0.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23031300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031301" version="2" check_existence="any_exist" check="all" comment="If core is set for any specific domains, it is set to 0.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031301" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23031300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031400" version="1" check="all" comment="/usr/systemd/coredump.conf:Storage is set to none.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000014" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031500" version="1" check="all" comment="core dump backtraces are disabled">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23031500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031600" version="1" check_existence="at_least_one_exists" check="all" comment="The system is using DNS">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23031600" />
        </textfilecontent54_test>
        <variable_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031601" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/resolv.conf is configured with at least two name servers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031601" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23031601" />
        </variable_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23031602" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/resolv.conf contains at least one nameserver entry">
          <object object_ref="oval:mil.disa.stig.ind:obj:23031602" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23032400" version="1" check_existence="at_least_one_exists" check="all" comment="All local interactive user accounts are assigned a home directory upon creation">
          <object object_ref="oval:mil.disa.stig.ind:obj:23032400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000016" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23032900" version="2" check="all" comment="AutomaticLoginEnable is set to false in /etc/gdm/custom.conf.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23032900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033000" version="5" check_existence="at_least_one_exists" check="all" comment="The PermitUserEnvironment option is not set to yes in /etc/ssh/sshd_config and /etc/ssh/sshd_config.d/*.conf.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000017" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033200" version="2" check_existence="at_least_one_exists" check="all" state_operator="AND" comment="deny is set to 3 or less but not 0 in /etc/pam.d/system-auth">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033200" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23033300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000015" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033201" version="1" check_existence="at_least_one_exists" check="all" state_operator="AND" comment="deny is set to 3 or less but not 0 in /etc/pam.d/password-auth">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033201" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23033300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000015" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033300" version="1" check_existence="at_least_one_exists" check="all" state_operator="AND" comment="deny is set to 3 or less but not 0 in /etc/security/faillock.conf">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23033300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000015" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033400" version="2" check_existence="all_exist" check="all" comment="pam_faillock.so fail_interval &lt;= 900 and !=0 in system-auth">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23033400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000024" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033401" version="1" check_existence="all_exist" check="all" comment="pam_faillock.so fail_interval &lt;= 900 and !=0 in password-auth">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033401" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23033400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000024" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033500" version="3" check_existence="at_least_one_exists" check="all" state_operator="AND" comment="/etc/security/faillock.conf:fail_interval &lt;=900 and !=0">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23033500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000024" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033600" version="2" check_existence="all_exist" check="all" comment="check unlock_time is set to 0 in /etc/pam.d/system-auth (preauth)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033601" version="2" check_existence="all_exist" check="all" comment="check unlock_time is set to 0 in /etc/pam.d/password-auth (preauth)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033601" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033602" version="2" check_existence="all_exist" check="all" comment="check unlock_time is set to 0 in /etc/pam.d/system-auth (authfail)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033602" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033603" version="2" check_existence="all_exist" check="all" comment="check unlock_time is set to 0 in /etc/pam.d/password-auth (authfail)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033603" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23033700" version="2" check_existence="all_exist" check="all" comment="unlock_time is set to 0 in /etc/security/faillock.conf">
          <object object_ref="oval:mil.disa.stig.ind:obj:23033700" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034000" version="1" check_existence="all_exist" check="all" comment="check silent is set in /etc/pam.d/system-auth (preauth)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034001" version="1" check_existence="all_exist" check="all" comment="check silent is set in /etc/pam.d/password-auth (preauth)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034100" version="1" check_existence="all_exist" check="all" comment="check /etc/security/faillock.conf for the silent setting value">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034200" version="1" check_existence="all_exist" check="all" comment="check audit is set in /etc/pam.d/system-auth (preauth)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034201" version="1" check_existence="all_exist" check="all" comment="check audit is set in /etc/pam.d/password-auth (preauth)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034201" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034300" version="1" check_existence="all_exist" check="all" comment="check /etc/security/faillock.conf for the audit setting">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034400" version="1" check_existence="all_exist" check="all" comment="pam_faillock.so preauth even_deny_root is in /etc/pam.d/system-auth">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034401" version="1" check_existence="all_exist" check="all" comment="pam_faillock.so preauth even_deny_root is set in /etc/pam.d/password-auth (preauth)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034401" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034600" version="1" check_existence="at_least_one_exists" check="all" comment="limits.conf and limits.d/*.conf:maxlogins is set to 10 or less by default">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23034600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23034601" version="1" check_existence="any_exist" check="all" comment="limits.conf and limits.d/*.conf:maxlogins is set to 10 or less for non-default domains">
          <object object_ref="oval:mil.disa.stig.ind:obj:23034603" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23034600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23035100" version="2" check_existence="at_least_one_exists" check="at least one" comment="dconf smartcard removal-action lock-screen">
          <object object_ref="oval:mil.disa.stig.ind:obj:23035100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23035100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23035600" version="1" check="all" comment="The pam_pwquality module is included in password-auth.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23035600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23035700" version="1" check="all" comment="at least one uppercase character is required">
          <object object_ref="oval:mil.disa.stig.ind:obj:23035700" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000020" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23035800" version="1" check="all" comment="at least one lowercase character is required">
          <object object_ref="oval:mil.disa.stig.ind:obj:23035800" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000020" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23035900" version="1" check="all" comment="at least one numeric character is required">
          <object object_ref="oval:mil.disa.stig.ind:obj:23035900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000020" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23036000" version="1" check="all" comment="The maximum number of repeating characters of the same character class be limited to four when passwords are changed.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23036000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23036000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000015" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23036100" version="1" check="all" comment="The maximum number of repeating characters is limited to three when passwords are changed.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23036100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23036100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000015" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23036200" version="1" check="all" comment="Passwords contain at least four character classes.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23036200" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23036200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23036300" version="1" check="all" comment="at least 8 characters must change when passwords are changed">
          <object object_ref="oval:mil.disa.stig.ind:obj:23036300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23036300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23036400" version="1" check_existence="none_exist" check="all" comment="Root does not have a minimum password age of 0 or blank">
          <object object_ref="oval:mil.disa.stig.ind:obj:23036400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23036500" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/login.defs:PASS_MIN_DAYS &gt;= 1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23036500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23036500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23036600" version="1" check_existence="at_least_one_exists" check="all" comment="0 -lt /etc/login.defs:PASS_MAX_DAYS -le 60">
          <object object_ref="oval:mil.disa.stig.ind:obj:23036600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23036600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000015" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23036900" version="1" check="all" comment="passwords must have a minimum of 15 characters">
          <object object_ref="oval:mil.disa.stig.ind:obj:23036900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23036900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23037000" version="1" check="all" comment="/etc/login.defs: PASS_MIN_LEN = 15 or greater">
          <object object_ref="oval:mil.disa.stig.ind:obj:23037000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23036900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23037300" version="2" check="all" comment="/etc/default/useradd: INACTIVE is set to 35 or less, but not -1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23037300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000019" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23037300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23037500" version="1" check="all" comment="Passwords contain at least one special character">
          <object object_ref="oval:mil.disa.stig.ind:obj:23037500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000020" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23037600" version="3" check_existence="none_exist" check="all" comment="/etc/sssd/sssd.conf:cache_credentials = false">
          <object object_ref="oval:mil.disa.stig.ind:obj:23037606" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23037602" version="2" check_existence="at_least_one_exists" check="all" comment="/etc/sssd/sssd.conf:offline_credentials_expiration = 1">
          <object object_ref="oval:mil.disa.stig.ind:obj:23037608" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23037700" version="2" check="all" comment="passwords must not be dictionary words">
          <object object_ref="oval:mil.disa.stig.ind:obj:23037700" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000024" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23037800" version="1" check="all" comment="/etc/login.defs: FAIL_DELAY = 4 or greater">
          <object object_ref="oval:mil.disa.stig.ind:obj:23037800" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23037800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038000" version="5" check_existence="any_exist" check="none satisfy" comment="The PermitEmptyPasswords option is not set to yes in /etc/ssh/sshd_config.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000016" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038100" version="1" check="all" comment="pam_lastlog is configured to show last successful logon">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038101" version="7" check_existence="none_exist" check="none satisfy" comment="pam_lastlog is not used with the silent option">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038101" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038200" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/ssh/sshd_config:PrintLastLog == yes">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038200" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000016" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038300" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/login.defs:UMASK == 077">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23038300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038600" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of execve syscall comparing uids">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038601" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of execve syscall comparing uids">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038601" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038602" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of execve syscall comparing gids">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038602" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038603" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of execve syscall comparing gids">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038603" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038800" version="1" check="all" comment="/etc/audit/auditd.conf: action_mail_acct = root">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038800" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23038800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23038900" version="2" check="all" comment="/etc/aliases contains 'postmaster: root'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23038900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23039000" version="1" check="all" state_operator="OR" comment="/etc/audit/auditd.conf: disk_error_action = SYSLOG, SINGLE, or HALT">
          <object object_ref="oval:mil.disa.stig.ind:obj:23039000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23039200" version="1" check="all" state_operator="OR" comment="/etc/audit/auditd.conf: disk_full_action = SYSLOG, SINGLE, or HALT">
          <object object_ref="oval:mil.disa.stig.ind:obj:23039200" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039200" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039201" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039202" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23039300" version="2" check="all" comment="/etc/audit/auditd.conf: local_events = yes">
          <object object_ref="oval:mil.disa.stig.ind:obj:23039300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000022" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23039400" version="1" check="all" state_operator="OR" comment="/etc/audit/auditd.conf: name_format = hostname, fqd or numeric">
          <object object_ref="oval:mil.disa.stig.ind:obj:23039400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039401" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039402" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23039500" version="2" check="all" comment="/etc/audit/auditd.conf: log_format = enriched">
          <object object_ref="oval:mil.disa.stig.ind:obj:23039500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23040200" version="1" check="all" comment="/etc/audit/audit.rules: -e 2 option is present and is the last line in the file">
          <object object_ref="oval:mil.disa.stig.ind:obj:23040200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23040300" version="1" check="all" comment="/etc/audit/audit.rules: --loginuid-immutable option is present">
          <object object_ref="oval:mil.disa.stig.ind:obj:23040300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23040400" version="1" check_existence="all_exist" check="all" comment="Events resulting in modifications to /etc/shadow are audited">
          <object object_ref="oval:mil.disa.stig.ind:obj:23040400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23040500" version="1" check_existence="all_exist" check="all" comment="Audit modifications to /etc/security/opasswd">
          <object object_ref="oval:mil.disa.stig.ind:obj:23040500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23040600" version="1" check_existence="all_exist" check="all" comment="Audit modifications to /etc/passwd">
          <object object_ref="oval:mil.disa.stig.ind:obj:23040600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23040700" version="1" check_existence="all_exist" check="all" comment="Audit modifications to /etc/gshadow">
          <object object_ref="oval:mil.disa.stig.ind:obj:23040700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23040800" version="1" check_existence="all_exist" check="all" comment="Audit modifications to /etc/group">
          <object object_ref="oval:mil.disa.stig.ind:obj:23040800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23040900" version="1" check_existence="all_exist" check="all" comment="Audit modifications to /etc/sudoers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23040900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23041000" version="1" check_existence="all_exist" check="all" comment="Audit modifications to /etc/sudoers.d/">
          <object object_ref="oval:mil.disa.stig.ind:obj:23041000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23041200" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/su">
          <object object_ref="oval:mil.disa.stig.ind:obj:23041200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23041300" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of setxattr syscall (auid&gt;=1000)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23041300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23041301" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of setxattr syscall (auid&gt;=1000)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23041301" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23041302" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of setxattr syscall (auid=0)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23041302" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23041303" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of setxattr syscall (auid=0)">
          <object object_ref="oval:mil.disa.stig.ind:obj:23041303" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23041800" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/chage">
          <object object_ref="oval:mil.disa.stig.ind:obj:23041800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23041900" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/chcon">
          <object object_ref="oval:mil.disa.stig.ind:obj:23041900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042100" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/ssh-agent">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042200" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/passwd">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042300" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/mount">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042400" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/umount">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042500" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of mount syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042501" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of mount syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042501" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042600" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/unix_update">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042700" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/postdrop">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042800" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/postqueue">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23042900" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/semanage">
          <object object_ref="oval:mil.disa.stig.ind:obj:23042900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043000" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/setfiles">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043100" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/userhelper">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043200" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/setsebool">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043300" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/unix_chkpwd">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043400" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/libexec/openssh/ssh-keysign">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043500" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/setfacl">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043600" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/pam_timestamp_check">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043700" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/newgrp">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043800" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of init_module syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043801" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of init_module syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043801" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043802" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of finit_module syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043802" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23043803" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of finit_module syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23043803" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044400" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/gpasswd">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044600" version="2" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of delete_module syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044601" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of delete_module syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044601" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044700" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/crontab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044800" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/chsh">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044900" version="1" check="all" comment="Audit 32-bit invocations of truncate syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044901" version="1" check="all" comment="Audit 64-bit invocations of truncate syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044901" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044902" version="1" check="all" comment="Audit 32-bit invocations of truncate syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044902" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044903" version="1" check="all" comment="Audit 64-bit invocations of truncate syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044903" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044904" version="1" check="all" comment="Audit 32-bit invocations of ftruncate syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044904" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044905" version="1" check="all" comment="Audit 64-bit invocations of ftruncate syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044905" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044906" version="1" check="all" comment="Audit 32-bit invocations of ftruncate syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044906" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044907" version="1" check="all" comment="Audit 64-bit invocations of ftruncate syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044907" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044908" version="1" check="all" comment="Audit 32-bit invocations of creat syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044908" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044909" version="1" check="all" comment="Audit 64-bit invocations of creat syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044909" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044910" version="1" check="all" comment="Audit 32-bit invocations of creat syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044910" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044911" version="1" check="all" comment="Audit 64-bit invocations of creat syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044911" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044912" version="1" check="all" comment="Audit 32-bit invocations of open syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044912" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044913" version="1" check="all" comment="Audit 64-bit invocations of open syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044913" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044914" version="1" check="all" comment="Audit 32-bit invocations of open syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044914" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044915" version="1" check="all" comment="Audit 64-bit invocations of open syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044915" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044916" version="1" check="all" comment="Audit 32-bit invocations of openat syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044916" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044917" version="1" check="all" comment="Audit 64-bit invocations of openat syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044917" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044918" version="1" check="all" comment="Audit 32-bit invocations of openat syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044918" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044919" version="1" check="all" comment="Audit 64-bit invocations of openat syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044919" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044920" version="1" check="all" comment="Audit 32-bit invocations of open_by_handle_at syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044920" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044921" version="1" check="all" comment="Audit 64-bit invocations of open_by_handle_at syscall with exit EPERM">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044921" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044922" version="1" check="all" comment="Audit 32-bit invocations of open_by_handle_at syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044922" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23044923" version="1" check="all" comment="Audit 64-bit invocations of open_by_handle_at syscall with exit EACCES">
          <object object_ref="oval:mil.disa.stig.ind:obj:23044923" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045500" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of chown syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045501" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of chown syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045501" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045502" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of lchown syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045502" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045503" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of lchown syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045503" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045504" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of fchownat syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045504" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045505" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of fchownat syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045505" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045506" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of fchown syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045506" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045507" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of fchown syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045507" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045600" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of chmod syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045601" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of chmod syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045601" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045602" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of fchmod syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045602" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045603" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of fchmod syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045603" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045604" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of fchmodat syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045604" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23045605" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of fchmodat syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:23045605" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046200" version="1" check_existence="all_exist" check="all" comment="Invocations of /usr/bin/sudo are audited">
          <object object_ref="oval:mil.disa.stig.ind:obj:23046200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046300" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/sbin/usermod">
          <object object_ref="oval:mil.disa.stig.ind:obj:23046300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046400" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/chacl">
          <object object_ref="oval:mil.disa.stig.ind:obj:23046400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046500" version="1" check_existence="all_exist" check="all" comment="Audit invocations of /usr/bin/kmod">
          <object object_ref="oval:mil.disa.stig.ind:obj:23046500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046700" version="1" check_existence="all_exist" check="all" comment="Audit modifications to /var/log/lastlog">
          <object object_ref="oval:mil.disa.stig.ind:obj:23046700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046800" version="1" check="all" comment="BLS options contain audit=1">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23046800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046801" version="1" check="all" comment="The GRUB_CMDLINE_LINUX arguments in /etc/default/grub contain audit=1">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779301" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23046800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046900" version="2" check="all" comment="The Boot Loader Specification options have audit_backlog_limit set to 8192 or greater.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23046900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23046900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23046901" version="2" check="all" comment="The GRUB_CMDLINE_LINUX arguments in /etc/default/grub have audit_backlog_limit set to 8192 or greater.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23046901" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23046900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23048000" version="1" check="all" state_operator="OR" comment="/etc/audit/auditd.conf: overflow_action = syslog, single or halt">
          <object object_ref="oval:mil.disa.stig.ind:obj:23048000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23039002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23048300" version="1" check="all" comment="/etc/audit/auditd.conf: space_left = 25%">
          <object object_ref="oval:mil.disa.stig.ind:obj:23048300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23048300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23048500" version="1" check="all" comment="The chrony daemon is disabled from acting as a server.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23048500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23048600" version="1" check="all" comment="/etc/chrony.conf: cmdport option is set to 0">
          <object object_ref="oval:mil.disa.stig.ind:obj:23048600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049100" version="1" check="all" comment="BLS options contain pti=on">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23049100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049101" version="1" check="all" comment="The GRUB_CMDLINE_LINUX arguments in /etc/default/grub contain pti=on">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779301" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23049100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049400" version="2" check="all" comment="/etc/modprobe.d contains a file that contains 'install atm /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049401" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'blacklist atm'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049401" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049500" version="2" check="all" comment="/etc/modprobe.d contains a file that contains 'install can /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049501" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'blacklist can'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049501" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049600" version="2" check="all" comment="/etc/modprobe.d contains a file that contains 'install sctp /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049601" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'blacklist sctp'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049601" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049700" version="2" check="all" comment="/etc/modprobe.d contains a file that contains 'install tipc /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049701" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'blacklist tipc'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049701" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049800" version="2" check="all" comment="/etc/modprobe.d contains a file that contains 'install cramfs /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049801" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'blacklist cramfs'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049801" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049802" version="1" check="all" comment="/etc/modprobe.conf contains 'install cramfs /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049802" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049803" version="1" check="all" comment="/etc/modprobe.conf contains 'blacklist cramfs'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049803" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049900" version="2" check="all" comment="/etc/modprobe.d contains a file that contains 'install firewire-core /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23049901" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'blacklist firewire-core'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23049901" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23050300" version="2" check="all" comment="/etc/modprobe.d contains a file that contains 'install usb-storage /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23050300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23050301" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'blacklist usb-storage'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23050301" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23050700" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'install bluetooth /bin/false'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23050700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23050701" version="1" check="all" comment="/etc/modprobe.d contains a file that contains 'blacklist bluetooth'">
          <object object_ref="oval:mil.disa.stig.ind:obj:23050701" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23050800" version="1" check_existence="any_exist" check="all" comment="If /dev/shm is configured in /etc/fstab, it is configured with the nodev option.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23050900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23030100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23050900" version="1" check_existence="any_exist" check="all" comment="If /dev/shm is configured in /etc/fstab, it is configured with the nosuid option">
          <object object_ref="oval:mil.disa.stig.ind:obj:23050900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23050900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051001" version="1" check_existence="any_exist" check="all" comment="If /dev/shm is configured in /etc/fstab, it is configured with the noexec option">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051001" />
        </textfilecontent54_test>
        <variable_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051101" version="1" check="all" comment="/tmp is configured with the nodev option in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051101" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051100" />
        </variable_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051102" version="1" check="all" comment="/tmp is configured in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051102" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051201" version="1" check="all" comment="/tmp is configured with the nosuid option in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051201" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051200" />
        </textfilecontent54_test>
        <variable_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051401" version="1" check="all" comment="/var/log is configured with the nodev option in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051401" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051400" />
        </variable_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051402" version="1" check="all" comment="/var/log is configured in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051402" />
        </textfilecontent54_test>
        <variable_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051501" version="1" check="all" comment="/var/log is configured with the nosuid option in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051501" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051500" />
        </variable_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051502" version="1" check="all" comment="/var/log is configured in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051502" />
        </textfilecontent54_test>
        <variable_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051600" version="1" check="all" comment="/var/log is configured with the noexec option in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051600" />
        </variable_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051601" version="1" check="all" comment="/var/log is configured in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051601" />
        </textfilecontent54_test>
        <variable_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051701" version="1" check="all" comment="/var/log/audit is configured with the nodev option in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051701" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051700" />
        </variable_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051702" version="1" check="all" comment="/var/log/audit is configured in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051702" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051800" version="1" check="all" comment="/var/log/audit is configured in /etc/fstab with the nosuid option.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051702" />
          <state state_ref="oval:mil.disa.stig.ind:ste:2303001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23051901" version="1" check="all" comment="/var/log/audit is configured with the noexec option in /etc/fstab">
          <object object_ref="oval:mil.disa.stig.ind:obj:23051901" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23052001" version="1" check_existence="any_exist" check="all" comment="If /var/tmp is configured in /etc/fstab, it is configured with the nodev option">
          <object object_ref="oval:mil.disa.stig.ind:obj:23052001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23052000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23052101" version="1" check_existence="any_exist" check="all" comment="If /var/tmp is configured in /etc/fstab, it is configured with the nosuid option">
          <object object_ref="oval:mil.disa.stig.ind:obj:23052101" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23052101" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23052500" version="1" check="all" comment="FirewallBackend is set to nftables in /etc/firewalld/firewalld.conf.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23052500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23052500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23052700" version="1" check_existence="all_exist" check="all" comment="/etc/ssh/sshd_config:RekeyLimit max data and time are greater than zero.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23052700" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23052700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23052701" version="1" check_existence="all_exist" check="all" comment="/etc/ssh/sshd_config.d:RekeyLimit max data and time are greater than zero.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23052701" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23052700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053000" version="1" check="all" comment="logout is set to '' in [org/gnome/settings-daemon/plugins/media-keys] section of /etc/dconf/db/local.d*.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23053000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053100" version="2" check_existence="all_exist" check="all" comment="/etc/systemd/system.conf:CtrlAltDelBurstAction is set to none.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000014" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053500" version="1" check="all" comment="net.ipv6.conf.default.accept_redirects is set to 0 in the sysctl configuration files.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053502" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053600" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv4.conf.all.send_redirects setting in admin sysctl configuration files is set to 0">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23053600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053601" version="1" check_existence="none_exist" check="all" comment="net.ipv4.conf.all.send_redirects setting in admin sysctl configuration files is missing">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053602" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv4.conf.all.send_redirects setting in system sysctl configuration files is set to 0">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053601" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23053600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053700" version="1" check="all" comment="net.ipv4.icmp_echo_ignore_broadcasts is set to 1 in the sysctl configuration files.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053702" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053801" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv6.conf.all.accept_source_route setting in /etc/sysctl.d/99-sysctl.conf is set to 0, and nothing else">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053801" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23053903" version="3" check_existence="at_least_one_exists" check="all" comment="net.ipv6.conf.default.accept_source_route setting in /etc/sysctl.d/99-sysctl.conf is set to 0, and nothing else">
          <object object_ref="oval:mil.disa.stig.ind:obj:23053903" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054000" version="3" check_existence="at_least_one_exists" check="all" comment="net.ipv6.conf.all.forwarding setting in admin sysctl configuration files is set to 0">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054000" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054001" version="1" check_existence="none_exist" check="all" comment="net.ipv6.conf.all.forwarding setting in admin sysctl configuration files is missing">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054002" version="3" check_existence="at_least_one_exists" check="all" comment="net.ipv6.conf.all.forwarding setting in system sysctl configuration files is set to 0">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054100" version="1" check="all" comment="net.ipv6.conf.all.accept_ra is set to 0 in the sysctl configuration files.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054102" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054301" version="2" check="all" comment="net.ipv4.conf.default.send_redirects is set to 0 in the sysctl configuration files.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054303" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054401" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv6.conf.all.accept_redirects setting in sysctl configuration files is set to 0, and nothing else">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054403" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054501" version="1" check="all" comment="kernel.unprivileged_bpf_disabled is set to 1, and nothing else, and there are no conflicting settings in other files">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054501" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054601" version="1" check="all" comment="kernel.yama.ptrace_scope in sysctl configuration files is set to 1, and nothing else, and there are no conflicting settings in other files">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054603" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000003" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054701" version="8" check_existence="at_least_one_exists" check="all" state_operator="OR" comment="kernel.kptr_restrict is set to 1 or 2 in the sysctl configuration files, and no conflicting configs exist.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054703" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23054701" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23054703" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054801" version="1" check="all" comment="user.max_user_namespaces is set to 0 in the sysctl configuration files.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054803" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054900" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv4.conf.all.rp_filter setting in admin sysctl configuration files is set to 2">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23054900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054901" version="1" check_existence="none_exist" check="all" comment="net.ipv4.conf.all.rp_filter setting in admin sysctl configuration files is missing">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23054902" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv4.conf.all.rp_filter setting in system sysctl configuration files is set to 2">
          <object object_ref="oval:mil.disa.stig.ind:obj:23054901" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23054900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23055001" version="1" check="all" comment="/etc/postfix/main.cf: smtpd_client_restrictions = permit_mynetworks,reject">
          <object object_ref="oval:mil.disa.stig.ind:obj:23055001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23055500" version="2" check_existence="at_least_one_exists" check="all" comment="/etc/ssh/sshd_config or /etc/ssh/sshd_config.d/*:X11Forwarding == no">
          <object object_ref="oval:mil.disa.stig.ind:obj:23055500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000017" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23055600" version="3" check_existence="at_least_one_exists" check="all" comment="sshd_config X11UseLocalhost is set to yes.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23055600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000016" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23055700" version="1" check="all" comment="/etc/xinetd.d/tftp: server_args has a -s option with a subdirectory assigned">
          <object object_ref="oval:mil.disa.stig.ind:obj:23055700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764100" version="1" check_existence="none_exist" check="all" comment="ALL does not exist /etc/sudoers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764101" version="1" check_existence="none_exist" check="all" comment="ALL does not exist in /etc/sudoers.d">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764101" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764200" version="1" check_existence="at_least_one_exists" check="all" comment="Defaults !targetpw in /etc/sudoers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764201" version="1" check_existence="at_least_one_exists" check="at least one" comment="/etc/sudoers.d included in /etc/sudoers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764201" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23764200" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764202" version="1" check_existence="at_least_one_exists" check="all" comment="Defaults !targetpw in /etc/sudoers.d">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764202" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764203" version="1" check_existence="at_least_one_exists" check="all" comment="Defaults !rootpw in /etc/sudoers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764203" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764204" version="1" check_existence="at_least_one_exists" check="all" comment="Defaults !rootpw in /etc/sudoers.d">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764204" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764205" version="1" check_existence="at_least_one_exists" check="all" comment="Defaults !runaspw in /etc/sudoers">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764205" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764206" version="1" check_existence="at_least_one_exists" check="all" comment="Defaults !runaspw in /etc/sudoers.d">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764206" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:23764300" version="2" check="all" comment="Defaults timestamp_timeout is to a positive number in /etc/sudoers and /etc/sudoers.d.">
          <object object_ref="oval:mil.disa.stig.ind:obj:23764302" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000019" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24451900" version="1" check_existence="all_exist" check="all" comment="/etc/dconf/db/local.d/*/banner-message-enable is set to true">
          <object object_ref="oval:mil.disa.stig.ind:obj:24451900" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24452300" version="1" check_existence="all_exist" check="all" comment="emergency.service config correct">
          <object object_ref="oval:mil.disa.stig.ind:obj:24452300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:24452300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24452400" version="1" check_existence="only_one_exists" check="all" comment="/etc/pam.d/system-auth:password includes pam_unix.so sha512">
          <object object_ref="oval:mil.disa.stig.ind:obj:24452400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24452800" version="1" check="all" comment="/etc/ssh/sshd_config.d: GSSAPIAuthentication is set to no">
          <object object_ref="oval:mil.disa.stig.ind:obj:24452800" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000017" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24452801" version="1" check="all" comment="/etc/ssh/sshd_config: GSSAPIAuthentication is set to no">
          <object object_ref="oval:mil.disa.stig.ind:obj:24452801" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000017" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24453001" version="2" check_existence="at_least_one_exists" check="all" comment="If /boot/efi is configured in /etc/fstab, it is configured with the nosuid option">
          <object object_ref="oval:mil.disa.stig.ind:obj:24453001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:2445301" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24453900" version="1" check="all" comment="/org/gnome/desktop/screensaver/lock-enabled in /etc/dconf/db/local.d/locks/*">
          <object object_ref="oval:mil.disa.stig.ind:obj:24453900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24454100" version="1" check_existence="none_exist" check="all" comment="There are no instances of nullok in /etc/pam.d/password-auth.">
          <object object_ref="oval:mil.disa.stig.ind:obj:24454100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24454300" version="1" check="all" comment="/etc/audit/auditd.conf: space_left_action = email">
          <object object_ref="oval:mil.disa.stig.ind:obj:24454300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:24454300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24455001" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv4.conf.default.accept_redirects setting in a configuration file in an acceptable directory is set to 0, and nothing else, and no conflicting configurations are in the files">
          <object object_ref="oval:mil.disa.stig.ind:obj:24455003" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24455100" version="1" check="all" comment="net.ipv4.conf.all.accept_source_route is set to 0 in the sysctl configuration files.">
          <object object_ref="oval:mil.disa.stig.ind:obj:24455102" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24455201" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv4.conf.default.accept_source_route setting in acceptable directory is set to 0, and nothing else, and there are no conflicting settings in other files">
          <object object_ref="oval:mil.disa.stig.ind:obj:24455203" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24455300" version="1" check="all" comment="net.ipv4.conf.all.accept_redirects is set to 0 in the sysctl configuration files.">
          <object object_ref="oval:mil.disa.stig.ind:obj:24455302" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24455401" version="1" check="all" comment="net.core.bpf_jit_harden is set to 2 in the sysctl configuration files.">
          <object object_ref="oval:mil.disa.stig.ind:obj:24455401" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000004" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24862500" version="1" check_existence="any_exist" check="all" comment="all nfs entries in /etc/fstab have nodev">
          <object object_ref="oval:mil.disa.stig.ind:obj:23030600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23030100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24862501" version="1" check_existence="any_exist" check="all" comment="all nfs entries in /etc/mtab have nodev">
          <object object_ref="oval:mil.disa.stig.ind:obj:23030601" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23030100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24862600" version="1" check_existence="any_exist" check="all" comment="all nfs entries in /etc/fstab have nosuid">
          <object object_ref="oval:mil.disa.stig.ind:obj:23030600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23052101" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24862601" version="1" check_existence="any_exist" check="all" comment="all nfs entries in /etc/mtab have nosuid">
          <object object_ref="oval:mil.disa.stig.ind:obj:23030601" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23052101" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:24885800" version="2" check_existence="any_exist" check="all" comment="If /var/tmp is configured in /etc/fstab, it is configured with the noexec option">
          <object object_ref="oval:mil.disa.stig.ind:obj:23052001" />
          <state state_ref="oval:mil.disa.stig.ind:ste:23051001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25170600" version="1" check_existence="none_exist" check="all" comment="There are no accounts in /etc/shadow that have blank password fields.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25170600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25171300" version="1" check_existence="at_least_one_exists" check="at least one" comment="system-auth pam_pwquality">
          <object object_ref="oval:mil.disa.stig.ind:obj:25171300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25171300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25171400" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/pam.d/system-auth:retry not greater than 3 and not 0">
          <object object_ref="oval:mil.disa.stig.ind:obj:25171400" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000018" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25171500" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/pam.d/password-auth:retry not greater than 3 and not 0">
          <object object_ref="oval:mil.disa.stig.ind:obj:25171500" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000018" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25299700" version="4" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of rename">
          <object object_ref="oval:mil.disa.stig.ind:obj:25299700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25299701" version="4" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of rename">
          <object object_ref="oval:mil.disa.stig.ind:obj:25299701" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25299800" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of renameat">
          <object object_ref="oval:mil.disa.stig.ind:obj:25299800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25299801" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of renameat">
          <object object_ref="oval:mil.disa.stig.ind:obj:25299801" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25299900" version="1" check="all" comment="Audit 32-bit invocations of the rmdir system call.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25299900" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25299901" version="1" check="all" comment="Audit 64-bit invocations of the rmdir system call.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25299901" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25300000" version="4" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of unlink">
          <object object_ref="oval:mil.disa.stig.ind:obj:25300000" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25300001" version="4" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of unlink">
          <object object_ref="oval:mil.disa.stig.ind:obj:25300001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25300100" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of unlinkat">
          <object object_ref="oval:mil.disa.stig.ind:obj:25300100" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25300101" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of unlinkat">
          <object object_ref="oval:mil.disa.stig.ind:obj:25300101" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303400" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of fsetxattr syscall (auid&gt;=1000)">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303401" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of fsetxattr syscall (auid&gt;=1000)">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303401" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303402" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of fsetxattr syscall (auid=0)">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303402" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303403" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of fsetxattr syscall (auid=0)">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303403" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303500" version="1" check="all" comment="Audit 32-bit invocations of the lsetxattr system call.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303500" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303501" version="1" check="all" comment="Audit 64-bit invocations of the lsetxattr system call.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303501" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303502" version="1" check="all" comment="Audit 32-bit invocations of the lsetxattr system call by root user.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303502" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303503" version="1" check="all" comment="Audit 64-bit invocations of the lsetxattr system call by root user.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303503" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303600" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of fremovexattr syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303601" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of fremovexattr syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303601" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303602" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of fremovexattr syscall by root">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303602" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303603" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of fremovexattr syscall by root">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303603" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303700" version="1" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of lremovexattr syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303701" version="1" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of lremovexattr syscall">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303701" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303702" version="2" check_existence="all_exist" check="all" comment="Audit 32-bit invocations of lremovexattr syscall by root">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303702" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303703" version="2" check_existence="all_exist" check="all" comment="Audit 64-bit invocations of lremovexattr syscall by root">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303703" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303800" version="1" check="all" comment="Audit 32-bit invocations of the removexattr system call.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303801" version="1" check="all" comment="Audit 64-bit invocations of the removexattr system call.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303801" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303802" version="1" check="all" comment="Audit 32-bit invocations of the removexattr system call by root user.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303802" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25303803" version="1" check="all" comment="Audit 64-bit invocations of the removexattr system call by root user.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25303803" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25312001" version="1" check_existence="at_least_one_exists" check="all" comment="net.ipv6.conf.default.accept_ra setting in the sysctl configuration files is set to 0, and nothing else">
          <object object_ref="oval:mil.disa.stig.ind:obj:25312003" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000002" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25725800" version="1" check="all" comment="The system terminates idle user sessions.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25725800" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25725800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25779300" version="1" check_existence="at_least_one_exists" check="all" comment="BLS options contain page_poison=1">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25779300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25779301" version="1" check_existence="at_least_one_exists" check="all" comment="/etc/default/grub page_poison=1">
          <object object_ref="oval:mil.disa.stig.ind:obj:25779301" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25779300" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25785400" version="1" check_existence="at_least_one_exists" check="all" comment="NFS mounts are present">
          <object object_ref="oval:mil.disa.stig.ind:obj:25785400" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25798801" version="1" check_existence="at_least_one_exists" check="at least one" comment="sshd_config includes sshd_config.d">
          <object object_ref="oval:mil.disa.stig.ind:obj:25798800" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25798801" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25799600" version="1" check_existence="at_least_one_exists" check="all" state_operator="AND" comment="/etc/ssh/sshd_config or /etc/ssh/sshd_config.d/.*:ClientAliveInterval == 600">
          <object object_ref="oval:mil.disa.stig.ind:obj:25799602" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25799600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25799601" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25801700" version="4" check_existence="at_least_one_exists" check="all" comment="check that /etc/dconf/profile/user:system-db is at minimum set to local">
          <object object_ref="oval:mil.disa.stig.ind:obj:25801700" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25802100" version="1" check="all" comment="The system enables the GUI screensaver lock feature.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25802100" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000001" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25802600" version="1" check_existence="at_least_one_exists" check="all" comment="dconf user database(s) exist">
          <object object_ref="oval:mil.disa.stig.ind:obj:25802600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25802601" version="1" check_existence="at_least_one_exists" check="all" comment="/org/gnome/desktop/screensaver/lock-delay in dconf user database locks directories exists">
          <object object_ref="oval:mil.disa.stig.ind:obj:25802601" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25803300" version="1" check="all" comment="The system disables the GUI user list feature.">
          <object object_ref="oval:mil.disa.stig.ind:obj:25803300" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000001" />
        </textfilecontent54_test>
        <variable_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25804500" version="1" check_existence="at_least_one_exists" check="all" comment="UIDs are unique">
          <object object_ref="oval:mil.disa.stig.ind:obj:25804501" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25804500" />
        </variable_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25811800" version="1" check_existence="none_exist" check="all" comment="pam_succeed_if is not present in /etc/pam.d/sudo">
          <object object_ref="oval:mil.disa.stig.ind:obj:25811800" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25814600" version="1" check_existence="at_least_one_exists" check="all" comment="ActionSendStreamDriverAuthMode == x509/name">
          <object object_ref="oval:mil.disa.stig.ind:obj:25814600" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25814600" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25814601" version="1" check_existence="at_least_one_exists" check="at least one" comment="StreamDriverAuthMode is set to x509/name (advanced syntax)">
          <object object_ref="oval:mil.disa.stig.ind:obj:20000002" />
          <state state_ref="oval:mil.disa.stig.ind:ste:20000027" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25814601" />
        </textfilecontent54_test>
        <textfilecontent54_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:tst:25814602" version="1" check_existence="any_exist" check="none satisfy" comment="StreamDriverAuthMode is not set in a module block (advanced syntax)">
          <object object_ref="oval:mil.disa.stig.ind:obj:20000005" />
          <state state_ref="oval:mil.disa.stig.ind:ste:25814602" />
        </textfilecontent54_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10000100" version="1" check_existence="all_exist" check="all" comment="The redhat-release package is version 8.1 or lower.">
          <object object_ref="oval:mil.disa.stig.linux:obj:10000004" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10000100" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10000200" version="1" check_existence="all_exist" check="all" comment="The redhat-release package is version 8.2 or higher.">
          <object object_ref="oval:mil.disa.stig.linux:obj:10000004" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10000200" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10000500" version="1" check_existence="all_exist" check="all" comment="Gnome is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:10000500" />
        </rpminfo_test>
        <dpkginfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10000501" version="1" check_existence="all_exist" check="all" comment="Gnome is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:10000501" />
        </dpkginfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10000800" version="1" check_existence="all_exist" check="all" comment="The redhat-release package is version 8.3 or lower.">
          <object object_ref="oval:mil.disa.stig.linux:obj:10000004" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10000800" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10000900" version="1" check_existence="all_exist" check="all" comment="The redhat-release package is version 8.4 or higher.">
          <object object_ref="oval:mil.disa.stig.linux:obj:10000004" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10000900" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10001400" version="1" check_existence="at_least_one_exists" check="all" state_operator="OR" comment="krb5-server-1.17-18.el8.x86_64 or newer is installed.">
          <object object_ref="oval:mil.disa.stig.linux:obj:10001400" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10001400" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10001401" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10001500" version="1" check_existence="at_least_one_exists" check="all" state_operator="OR" comment="krb5-workstation-1.17-18.el8.x86_64 or newer is installed.">
          <object object_ref="oval:mil.disa.stig.linux:obj:10001500" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10001400" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10001401" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23023900" version="1" check_existence="none_exist" check="all" comment="package krb5-workstation is NOT installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:10001500" />
        </rpminfo_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23024000" version="1" check_existence="at_least_one_exists" check="all" comment="selinux is active">
          <object object_ref="oval:mil.disa.stig.linux:obj:23024000" />
          <state state_ref="oval:mil.disa.stig.linux:ste:23024000" />
        </partition_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23024100" version="1" check_existence="all_exist" check="all" comment="package policycoreutils is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23024100" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23025500" version="1" check="all" comment="Package crypto-policies is version 20210617 or newer.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23025500" />
          <state state_ref="oval:mil.disa.stig.linux:ste:23025500" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23027300" version="1" check_existence="all_exist" check="all" comment="package openssl-pkcs11 is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23027300" />
        </rpminfo_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23029200" version="1" check_existence="all_exist" check="all" comment="There is a separate file system for /var.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23029200" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23029300" version="1" check_existence="all_exist" check="all" comment="There is a separate file system for /var/log.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23029300" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23029400" version="1" check_existence="all_exist" check="all" comment="There is a separate file system for audit data directory.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23029400" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23029500" version="1" check_existence="all_exist" check="all" comment="There is a separate file system for /tmp.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23029500" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23029900" version="1" check="all" comment="/home is mounted with the nosuid option.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23032800" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000002" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23030000" version="1" check_existence="any_exist" check="all" comment="If /boot is mounted, it is mounted with the nosuid option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23030000" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000002" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23030100" version="1" check_existence="any_exist" check="all" comment="Device files are mounted with the nodev option.  Mounts on '/' are ignored.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23030100" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000001" />
        </partition_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23031200" version="2" check_existence="any_exist" check="all" comment="systemd-coredump.socket LoadState is masked if exists">
          <object object_ref="oval:mil.disa.stig.linux:obj:23031200" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000005" />
        </systemdunitproperty_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23031201" version="2" check_existence="any_exist" check="all" comment="systemd-coredump.socket UnitFileState is masked if exists">
          <object object_ref="oval:mil.disa.stig.linux:obj:23031201" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000005" />
        </systemdunitproperty_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23032800" version="1" check_existence="all_exist" check="all" comment="A separate operating system filesystem is used for user home directories">
          <object object_ref="oval:mil.disa.stig.linux:obj:23032800" />
        </partition_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23041100" version="1" check_existence="all_exist" check="all" comment="package audit is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23041100" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23047700" version="1" check_existence="all_exist" check="all" comment="The rsyslog package is installed.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23047700" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23047800" version="1" check_existence="all_exist" check="all" comment="package rsyslog-gnutls is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23047800" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23048700" version="1" check_existence="none_exist" check="all" comment="package telnet-server is NOT installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23048700" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23048800" version="1" check_existence="none_exist" check="all" comment="The package abrt and any related packages are NOT installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23048800" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23048900" version="1" check_existence="none_exist" check="all" comment="package sendmail is NOT installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23048900" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23049200" version="1" check_existence="none_exist" check="all" comment="The rsh-server package is absent.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23049200" />
        </rpminfo_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23050200" version="1" check_existence="any_exist" check="all" comment="autofs.service ActiveState is inactive if it exists.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23050200" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000007" />
        </systemdunitproperty_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23050500" version="1" check="all" comment="firewalld package is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23050500" />
        </rpminfo_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23050800" version="1" check_existence="any_exist" check="all" comment="If /dev/shm is mounted, it is mounted with the nodev option.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23050900" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000001" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23050900" version="1" check_existence="any_exist" check="all" comment="If /dev/shm is mounted, it is mounted with the nosuid option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23050900" />
          <state state_ref="oval:mil.disa.stig.linux:ste:23050900" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051000" version="1" check_existence="any_exist" check="all" comment="If /dev/shm is mounted, it is mounted with the noexec option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051000" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000000" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051100" version="1" check="all" comment="/tmp is mounted with the nodev option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051100" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000001" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051200" version="1" check="all" comment="/tmp is mounted with the nosuid option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051200" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000002" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051300" version="1" check="all" comment="/tmp is mounted with the noexec option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23029500" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000000" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051400" version="1" check="all" comment="/var/log is mounted with the nodev option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051400" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000001" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051500" version="1" check="all" comment="/var/log is mounted with the nosuid option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051500" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000002" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051600" version="1" check="all" comment="/var/log is mounted with the noexec option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051600" />
          <state state_ref="oval:mil.disa.stig.linux:ste:23051600" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051700" version="1" check="all" comment="/var/log/audit is mounted with the nodev option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051700" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000001" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051800" version="1" check="all" comment="/var/log/audit is mounted with the nosuid option.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051700" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000002" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23051900" version="1" check="all" comment="/var/log/audit is mounted with the noexec option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23051900" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000000" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23052000" version="1" check_existence="any_exist" check="all" comment="If /var/tmp is mounted, it is mounted with the nodev option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23052000" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000001" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23052100" version="1" check_existence="any_exist" check="all" comment="If /var/tmp is mounted, it is mounted with the nosuid option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23052100" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000002" />
        </partition_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23052600" version="1" check="all" comment="The openssh-server package is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23052600" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23053300" version="1" check_existence="none_exist" check="all" comment="The tftp-server package is absent.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23053300" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23055000" version="1" check="all" comment="The postfix package is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23055000" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23055300" version="1" check_existence="none_exist" check="all" comment="The graphical display manager is absent.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23055300" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23055800" version="1" check_existence="none_exist" check="all" comment="An FTP server package is not installed.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23055800" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23055900" version="1" check_existence="none_exist" check="all" comment="gssproxy">
          <object object_ref="oval:mil.disa.stig.linux:obj:23055900" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23056000" version="1" check_existence="none_exist" check="all" comment="package iprutils is NOT installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23056000" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23056100" version="1" check="all" comment="tuned package is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:23056100" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23764000" version="1" check_existence="none_exist" check="all" comment="package krb5-server is NOT installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:10001400" />
        </rpminfo_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:23835301" version="3" check_existence="at_least_one_exists" check="all" comment="rsyslog.service is enabled">
          <object object_ref="oval:mil.disa.stig.linux:obj:23835301" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000006" />
        </systemdunitproperty_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:24452700" version="1" check="all" comment="The rng-tools package is installed.">
          <object object_ref="oval:mil.disa.stig.linux:obj:24452700" />
        </rpminfo_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:24452900" version="1" check_existence="at_least_one_exists" check="all" comment="/var/tmp is mounted">
          <object object_ref="oval:mil.disa.stig.linux:obj:24452900" />
        </partition_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:24453000" version="2" check_existence="at_least_one_exists" check="all" comment="If /boot/efi is mounted, it is mounted with the nosuid option">
          <object object_ref="oval:mil.disa.stig.linux:obj:24453000" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000002" />
        </partition_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:24454500" version="1" check_existence="at_least_one_exists" check="all" comment="fapolicyd.service is active">
          <object object_ref="oval:mil.disa.stig.linux:obj:24454500" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000003" />
        </systemdunitproperty_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:24454900" version="1" check_existence="at_least_one_exists" check="all" comment="openssh-server package is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:24454900" />
        </rpminfo_test>
        <partition_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:24885800" version="1" check_existence="any_exist" check="all" comment="If /var/tmp is mounted, it is mounted with the noexec option">
          <object object_ref="oval:mil.disa.stig.linux:obj:23052000" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000000" />
        </partition_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25784900" version="1" check="all" comment="The autofs package is installed.">
          <object object_ref="oval:mil.disa.stig.linux:obj:25784900" />
        </rpminfo_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25793600" version="1" check_existence="at_least_one_exists" check="all" comment="Check if firewalld is in 'active' state">
          <object object_ref="oval:mil.disa.stig.linux:obj:25793600" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000003" />
        </systemdunitproperty_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25795201" version="1" check_existence="at_least_one_exists" check="all" comment="The tftp-server package is iinstalled.">
          <object object_ref="oval:mil.disa.stig.linux:obj:23053300" />
        </rpminfo_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25803500" version="1" check_existence="at_least_one_exists" check="all" comment="usbguard package is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:25803500" />
        </rpminfo_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25803600" version="1" check_existence="at_least_one_exists" check="all" comment="usbguard.service is active">
          <object object_ref="oval:mil.disa.stig.linux:obj:25803600" />
          <state state_ref="oval:mil.disa.stig.linux:ste:25803600" />
        </systemdunitproperty_test>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25808900" version="1" check_existence="at_least_one_exists" check="all" comment="fapolicyd package is installed">
          <object object_ref="oval:mil.disa.stig.linux:obj:25808900" />
        </rpminfo_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25814200" version="2" check_existence="at_least_one_exists" check="all" comment="rsyslog.service is active">
          <object object_ref="oval:mil.disa.stig.linux:obj:25814200" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000003" />
        </systemdunitproperty_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25815200" version="1" check_existence="at_least_one_exists" check="all" comment="auditd.service is active">
          <object object_ref="oval:mil.disa.stig.linux:obj:25815200" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000003" />
        </systemdunitproperty_test>
        <systemdunitproperty_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:25815201" version="1" check_existence="at_least_one_exists" check="all" comment="auditd.service is running">
          <object object_ref="oval:mil.disa.stig.linux:obj:25815201" />
          <state state_ref="oval:mil.disa.stig.linux:ste:20000004" />
        </systemdunitproperty_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:10000602" version="1" check_existence="all_exist" check="all" comment="/sys/firmware/efi exists">
          <object object_ref="oval:mil.disa.stig.unix:obj:10000602" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:10000701" version="1" check_existence="none_exist" check="all" comment="/sys/firmware/efi does not exist">
          <object object_ref="oval:mil.disa.stig.unix:obj:10000602" />
        </file_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:10001200" version="1" check_existence="all_exist" check="all" comment="net.ipv6.conf.all.disable_ipv6 setting in kernel is set to 1">
          <object object_ref="oval:mil.disa.stig.unix:obj:10001200" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000010" />
        </sysctl_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23023800" version="1" check_existence="none_exist" check="all" comment="/etc/*.keytab does not exist.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23023800" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23024500" version="1" check="all" comment="/var/log/messages file has mode 0640 or less permissive">
          <object object_ref="oval:mil.disa.stig.unix:obj:23024500" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000007" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23024600" version="1" check="all" comment="/var/log/messages file is owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23024600" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000005" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23024700" version="2" check="all" comment="/var/log/messages file is owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23024700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000006" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23024800" version="1" check="all" comment="/var/log directory has mode 0755 or less permissive.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23024800" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000008" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23024900" version="1" check="all" comment="/var/log directory is owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23024900" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000005" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23025000" version="1" check="all" comment="/var/log directory is group-owned by root.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23025000" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000006" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23025700" version="1" check_existence="all_exist" check="all" comment="System command files have mode 755 or less permissive">
          <object object_ref="oval:mil.disa.stig.unix:obj:20000009" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000003" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23025800" version="2" check_existence="all_exist" check="all" comment="System command files are owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23025801" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000005" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23025900" version="1" check="all" comment="System command files are group-owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:20000009" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23025900" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23026003" version="1" check_existence="none_exist" check="all" comment="no operating system library regular files are group-writable">
          <object object_ref="oval:mil.disa.stig.unix:obj:23026003" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23026004" version="1" check_existence="none_exist" check="all" comment="no operating system library regular files are world-writable">
          <object object_ref="oval:mil.disa.stig.unix:obj:23026004" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23026100" version="1" check_existence="none_exist" check="all" comment="The operating system library files are owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23026100" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23026200" version="2" check_existence="none_exist" check="all" comment="The operating system library files are group owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23026200" />
        </file_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23026600" version="1" check_existence="all_exist" check="all" comment="kernel.kexec_load_disabled setting in kernel is set to 1">
          <object object_ref="oval:mil.disa.stig.unix:obj:23026600" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000010" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23026700" version="1" check_existence="all_exist" check="all" comment="fs.protected_symlinks setting in kernel is set to 1">
          <object object_ref="oval:mil.disa.stig.unix:obj:23026700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000010" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23026800" version="1" check_existence="all_exist" check="all" comment="fs.protected_hardlinks setting in kernel is set to 1">
          <object object_ref="oval:mil.disa.stig.unix:obj:23026800" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23026800" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23026900" version="1" check_existence="all_exist" check="all" comment="kernel.dmesg_restrict setting in kernel is set to 1">
          <object object_ref="oval:mil.disa.stig.unix:obj:23026900" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23026900" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23027000" version="1" check_existence="all_exist" check="all" comment="kernel.perf_event_paranoid setting in kernel is set to 2">
          <object object_ref="oval:mil.disa.stig.unix:obj:23027000" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000011" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23028000" version="1" check_existence="all_exist" check="all" comment="kernel.randomize_va_space setting in kernel is set to 2">
          <object object_ref="oval:mil.disa.stig.unix:obj:23028000" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23028000" />
        </sysctl_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23028300" version="1" check_existence="none_exist" check="all" comment="There must be no shosts.equiv files on the system.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23028300" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23028400" version="1" check_existence="none_exist" check="all" comment="There are no .shosts files on the system.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23028400" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23028600" version="1" check_existence="any_exist" check="all" comment="The SSH daemon public host key files have mode 0644 or less permissive">
          <object object_ref="oval:mil.disa.stig.unix:obj:23028600" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000001" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23028700" version="1" check_existence="all_exist" check="all" comment="SSH private key files mode 640 or less permissive">
          <object object_ref="oval:mil.disa.stig.unix:obj:23028700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000007" />
        </file_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23031100" version="1" check_existence="all_exist" check="all" comment="kernel.core_pattern setting in kernel is set to 1">
          <object object_ref="oval:mil.disa.stig.unix:obj:23031100" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23031100" />
        </sysctl_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23032500" version="1" check="all" comment="The home directories of non-system users have mode 0740 or less permissive.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23032500" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000020" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23032501" version="1" check="all" comment="The home directory of the root user has mode 0740 or less permissive.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23032501" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000020" />
        </file_test>
        <password_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23036401" version="1" check_existence="none_exist" check="all" comment="Non-system users do not have a minimum password age of 0 or blank">
          <object object_ref="oval:mil.disa.stig.unix:obj:23036401" />
        </password_test>
        <shadow_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23036700" version="1" check_existence="any_exist" check="all" comment="No password in /etc/shadow has a maximum password age of 0 or greater than 60">
          <object object_ref="oval:mil.disa.stig.unix:obj:23036700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23036700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23036701" />
        </shadow_test>
        <shadow_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23036701" version="1" check_existence="all_exist" check="all" comment="Root password in /etc/shadow does not have a maximum password age of 0 or greater than 60">
          <object object_ref="oval:mil.disa.stig.unix:obj:23036702" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23036700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23036701" />
        </shadow_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23039600" version="1" check="all" comment="Audit log is mode 0600 or less permissive">
          <object object_ref="oval:mil.disa.stig.unix:obj:20000011" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000004" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23039700" version="1" check="all" comment="audit logs are owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23039700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000005" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23039800" version="2" check="all" comment="audit logs are group-owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23039700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000006" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23039900" version="1" check_existence="all_exist" check="all" comment="audit log directories are owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23040100" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000005" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23040000" version="1" check_existence="all_exist" check="all" comment="audit log directories are group-owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23040100" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000006" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23040100" version="1" check_existence="all_exist" check="all" comment="audit log directory has a mode of 0700 or less permissive">
          <object object_ref="oval:mil.disa.stig.unix:obj:23040100" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23040100" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23047100" version="1" check="all" comment="/etc/audit/auditd.conf has mode 0640 or less permissive">
          <object object_ref="oval:mil.disa.stig.unix:obj:23047100" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000007" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23047101" version="1" check="all" comment=".rules files in /etc/audit/rules.d have mode 0640 or less permissive">
          <object object_ref="oval:mil.disa.stig.unix:obj:23047101" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000007" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23047200" version="1" check_existence="all_exist" check="all" comment="audit tools have a mode of 0755 or less permissive.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23047200" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000008" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23047300" version="1" check_existence="all_exist" check="all" comment="audit tools are owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:23047200" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000005" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23047400" version="1" check="all" comment="The audit tools are group-owned by root.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23047200" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000006" />
        </file_test>
        <process58_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23052601" version="1" check_existence="all_exist" check="all" comment="The ssh daemon is running.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23052601" />
        </process58_test>
        <symlink_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23052900" version="2" check="all" comment="The ctrl-alt-del.target unit is masked.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23052900" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000013" />
        </symlink_test>
        <symlink_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23053200" version="2" check_existence="at_least_one_exists" check="all" comment="debug-shell.service is masked">
          <object object_ref="oval:mil.disa.stig.unix:obj:23053200" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000013" />
        </symlink_test>
        <password_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23053400" version="1" check="all" comment="Only the root account has a UID of zero.">
          <object object_ref="oval:mil.disa.stig.unix:obj:23053400" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23053400" />
        </password_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23053500" version="1" check="all" comment="net.ipv6.conf.default.accept_redirects is set to 0 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:23053500" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23053600" version="1" check_existence="all_exist" check="all" comment="net.ipv4.conf.all.send_redirects setting in kernel is set to 0">
          <object object_ref="oval:mil.disa.stig.unix:obj:23053600" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23053600" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23053700" version="1" check="all" comment="net.ipv4.icmp_echo_ignore_broadcasts is set to 1 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:23053700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000010" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23053800" version="1" check_existence="all_exist" check="all" comment="net.ipv6.conf.all.accept_source_route setting in kernel is set to 0">
          <object object_ref="oval:mil.disa.stig.unix:obj:23053800" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23053902" version="1" check_existence="all_exist" check="all" comment="net.ipv6.conf.default.accept_source_route setting in kernel is set to 0">
          <object object_ref="oval:mil.disa.stig.unix:obj:23053904" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054000" version="1" check_existence="all_exist" check="all" comment="net.ipv6.conf.all.forwarding setting in kernel is set to 0">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054000" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054100" version="1" check="all" comment="net.ipv6.conf.all.accept_ra is set to 0 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054100" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054300" version="2" check="all" comment="net.ipv4.conf.default.send_redirects is set to 0 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054300" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054400" version="1" check_existence="all_exist" check="all" comment="net.ipv6.conf.all.accept_redirects setting in kernel is set to 0">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054400" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054500" version="2" check_existence="all_exist" check="all" comment="kernel.unprivileged_bpf_disabled setting in kernel is set to 1">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054500" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000010" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054600" version="1" check_existence="all_exist" check="all" comment="kernel.yama.ptrace_scope setting in kernel is set to 1">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054600" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000010" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054700" version="5" check="all" state_operator="OR" comment="kernel.kptr_restrict is set to 1 or 2 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23054700" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23054702" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054800" version="1" check="all" comment="user.max_user_namespaces is set to 0 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054800" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23054900" version="1" check_existence="all_exist" check="all" comment="net.ipv4.conf.all.rp_filter setting in kernel is set to 2">
          <object object_ref="oval:mil.disa.stig.unix:obj:23054900" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23054900" />
        </sysctl_test>
        <interface_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:23055400" version="1" check_existence="any_exist" check="all" comment="no network interfaces are in promiscuous mode">
          <object object_ref="oval:mil.disa.stig.unix:obj:23055400" />
          <state state_ref="oval:mil.disa.stig.unix:ste:23055400" />
        </interface_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:24455000" version="1" check_existence="all_exist" check="all" comment="net.ipv4.conf.default.accept_redirects setting in kernel is set to 0">
          <object object_ref="oval:mil.disa.stig.unix:obj:24455000" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:24455100" version="1" check="all" comment="net.ipv4.conf.all.accept_source_route is set to 0 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:24455100" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:24455200" version="1" check_existence="all_exist" check="all" comment="net.ipv4.conf.default.accept_source_route setting in kernel is set to 0">
          <object object_ref="oval:mil.disa.stig.unix:obj:24455200" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:24455300" version="1" check="all" comment="net.ipv4.conf.all.accept_redirects is set to 0 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:24455300" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:24455400" version="1" check="all" comment="net.core.bpf_jit_harden is set to 2 in kernel">
          <object object_ref="oval:mil.disa.stig.unix:obj:24455400" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000011" />
        </sysctl_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:25170700" version="3" check="all" comment="Library directories have mode 755 or less permissive.">
          <object object_ref="oval:mil.disa.stig.unix:obj:25170800" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000003" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:25170800" version="1" check_existence="at_least_one_exists" check="all" comment="All system-wide library directories must be owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:25170800" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000005" />
        </file_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:25170900" version="1" check_existence="at_least_one_exists" check="all" comment="All system-wide library directories must be group-owned by root">
          <object object_ref="oval:mil.disa.stig.unix:obj:25170900" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000006" />
        </file_test>
        <symlink_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:25171800" version="1" check_existence="all_exist" check="all" comment="default.target is symlinked to multi-user.target">
          <object object_ref="oval:mil.disa.stig.unix:obj:25171800" />
          <state state_ref="oval:mil.disa.stig.unix:ste:25171800" />
        </symlink_test>
        <sysctl_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:25312000" version="1" check_existence="all_exist" check="all" comment="net.ipv6.conf.default.accept_ra setting in kernel is set to 0">
          <object object_ref="oval:mil.disa.stig.unix:obj:25312000" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000009" />
        </sysctl_test>
        <file_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:25789000" version="1" check_existence="any_exist" check="all" comment="All local interactive user home directories are 0750 or less">
          <object object_ref="oval:mil.disa.stig.unix:obj:25789001" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000019" />
        </file_test>
        <password_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:25805100" version="1" check_existence="all_exist" check="all" comment="check for users without a home directory not defined">
          <object object_ref="oval:mil.disa.stig.unix:obj:20000017" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000016" />
        </password_test>
        <password_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:tst:25805101" version="1" check_existence="all_exist" check="all" comment="check if root's home directory is not defined">
          <object object_ref="oval:mil.disa.stig.unix:obj:20000018" />
          <state state_ref="oval:mil.disa.stig.unix:ste:20000016" />
        </password_test>
      </tests>
      <objects>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:230345" version="1">
          <filepath datatype="string">/etc/security/faillock.conf</filepath>
          <pattern datatype="string" operation="pattern match">^\s*even_deny_root\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:10001201" version="1" comment="/etc/sysctl.conf">
          <filepath>/etc/sysctl.conf</filepath>
          <pattern operation="pattern match">(?:^|\.*\n)\s*net\.ipv6\.conf\.all\.disable_ipv6\s*=\s*(\d+)\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:10001202" version="1" comment="other sysctl configuration files">
          <path var_ref="oval:mil.disa.stig.defs:var:20000005" var_check="at least one" />
          <filename operation="pattern match">\.conf$</filename>
          <pattern operation="pattern match">(?:^|\.*\n)\s*net\.ipv6\.conf\.all\.disable_ipv6\s*=\s*(\d+)\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:10001203" version="1" comment="all sysctl configuration files">
          <set xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" set_operator="UNION">
            <object_reference>oval:mil.disa.stig.ind:obj:10001201</object_reference>
            <object_reference>oval:mil.disa.stig.ind:obj:10001202</object_reference>
          </set>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:10001204" version="1" comment="/proc/cmdline contains ipv6.disable=1">
          <filepath>/proc/cmdline</filepath>
          <pattern operation="pattern match">\bipv6\.disable=1\b</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:20000001" version="1" comment="Audit log file">
          <filepath>/etc/audit/auditd.conf</filepath>
          <pattern operation="pattern match">^\s*log_file\s*=\s*(\S+)\s*(?:#.*)?$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:20000002" version="1" comment="rsyslog: action for all messages">
          <set xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" set_operator="UNION">
            <object_reference>oval:mil.disa.stig.ind:obj:20000003</object_reference>
            <object_reference>oval:mil.disa.stig.ind:obj:20000004</object_reference>
          </set>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:20000003" version="3" comment="rsyslog.conf: action for all messages">
          <behaviors ignore_case="true" />
          <filepath datatype="string">/etc/rsyslog.conf</filepath>
          <pattern operation="pattern match">^\*\.\*\s+action\((\s*(?:[^#\)]*(?:#.*$)?\n)*[^#\)]*)\)</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:20000004" version="3" comment="rsyslog.d/*.conf: action for all messages">
          <behaviors ignore_case="true" />
          <path>/etc/rsyslog.d</path>
          <filename operation="pattern match">^.*\.conf$</filename>
          <pattern operation="pattern match">^\*\.\*\s+action\((\s*(?:[^#\)]*(?:#.*$)?\n)*[^#\)]*)\)</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:20000005" version="1" comment="rsyslog: module blocks">
          <set xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" set_operator="UNION">
            <object_reference>oval:mil.disa.stig.ind:obj:20000006</object_reference>
            <object_reference>oval:mil.disa.stig.ind:obj:20000007</object_reference>
          </set>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:20000006" version="1" comment="rsyslog.conf: module blocks">
          <behaviors ignore_case="true" />
          <filepath datatype="string">/etc/rsyslog.conf</filepath>
          <pattern operation="pattern match">^\s*module\((\s*(?:[^#\)]*(?:#.*$)?\n)*[^#\)]*)\)</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:20000007" version="1" comment="rsyslog.d/*.conf: module blocks">
          <behaviors ignore_case="true" />
          <path>/etc/rsyslog.d</path>
          <filename operation="pattern match">^.*\.conf$</filename>
          <pattern operation="pattern match">^\s*module\((\s*(?:[^#\)]*(?:#.*$)?\n)*[^#\)]*)\)</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23022100" version="2">
          <path>/etc</path>
          <filename>os-release</filename>
          <pattern operation="pattern match">^\s*PRETTY_NAME="Red Hat Enterprise Linux 8\.(\d+)\b</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23022300" version="1" comment="/proc/sys/crypto/fips_enabled">
          <filepath datatype="string">/proc/sys/crypto/fips_enabled</filepath>
          <pattern operation="pattern match">^(\d+)$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23022301" version="1" comment="/boot/grub2/grubenv:kernelopts">
          <filepath datatype="string">/boot/grub2/grubenv</filepath>
          <pattern operation="pattern match">^\s*kernelopts=[^#]*fips=(\d+)\b</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23022800" version="1">
          <filepath>/etc/rsyslog.conf</filepath>
          <pattern operation="pattern match">^[ \t]*(?:\S+;auth\.\*|auth\.\*;\S+|auth\.\*|\S+;auth\.\*;\S+)[ \t]+\S+\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23022801" version="1">
          <filepath>/etc/rsyslog.conf</filepath>
          <pattern operation="pattern match">^[ \t]*(?:\S+;authpriv\.\*|authpriv\.\*;\S+|authpriv\.\*|\S+;authpriv\.\*;\S+)[ \t]+\S+\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23022802" version="1">
          <filepath>/etc/rsyslog.conf</filepath>
          <pattern operation="pattern match">^[ \t]*(?:\S+;daemon\.\*|daemon\.\*;\S+|daemon\.\*|\S+;daemon\.\*;\S+)[ \t]+\S+\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23023100" version="1" comment="/etc/login.defs:ENCRYPT_METHOD">
          <filepath>/etc/login.defs</filepath>
          <pattern operation="pattern match">^\s*ENCRYPT_METHOD\s+([^#\r\n]*)</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23023200" version="1" comment="Extract password hashes from /etc/shadow.">
          <filepath datatype="string">/etc/shadow</filepath>
          <pattern operation="pattern match">^[^:]+:([^:]*):</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23023201" version="1" comment="Filter out acceptable shadow password entries.">
          <set xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5">
            <object_reference>oval:mil.disa.stig.ind:obj:23023200</object_reference>
            <filter action="exclude">oval:mil.disa.stig.ind:ste:23023200</filter>
            <filter action="exclude">oval:mil.disa.stig.ind:ste:23023201</filter>
          </set>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23023300" version="1">
          <filepath>/etc/login.defs</filepath>
          <pattern operation="pattern match">^\s*SHA_CRYPT_MIN_ROUNDS\s+(\d+)\b</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23023301" version="1">
          <filepath>/etc/login.defs</filepath>
          <pattern operation="pattern match">^\s*SHA_CRYPT_MAX_ROUNDS\s+(\d+)\b</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23023400" version="1">
          <filepath datatype="string">/boot/efi/EFI/redhat/grub.cfg</filepath>
          <pattern operation="pattern match">^\s*set\s+superusers\s*=\s*"(\w+)"\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:23023401" version="1">
          <filepath datatype="string">/boot/efi/EFI/redhat/user.cfg</filepath>
          <pattern operation="pattern match">^\s*GRUB2_PASSWORD=(\S+)\b</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
        </textfilecontent54_object>
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          <pattern operation="pattern match">(?:^|\.*\n)\s*net\.ipv4\.conf\.default\.accept_source_route\s*=\s*(\d+)\s*$</pattern>
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          <filepath>/etc/shadow</filepath>
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          <behaviors ignore_case="true" />
          <filepath datatype="string">/etc/pam.d/system-auth</filepath>
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          <instance datatype="int" operation="greater than or equal">1</instance>
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          <filepath>/etc/pam.d/system-auth</filepath>
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          <instance datatype="int">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25171500" version="1">
          <filepath>/etc/pam.d/password-auth</filepath>
          <pattern operation="pattern match">^[ \t]*password[ \t]+(?:(?:required)|(?:requisite))[ \t]+pam_pwquality\.so(?:[ \t]+|(?:[ \t][^#\r\f\n]+[ \t]+))retry=([0-9]+)(?:\s|$)</pattern>
          <instance datatype="int">1</instance>
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          <filepath>/etc/audit/audit.rules</filepath>
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          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25299701" version="2" comment="64-bit rename command">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S\s+rename\s+|(\s+|,)rename(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25299800" version="1" comment="32-bit renameat command">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S\s+renameat\s+|(\s+|,)renameat(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25299801" version="1" comment="64-bit renameat command">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S\s+renameat\s+|(\s+|,)renameat(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25299900" version="1">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match" var_ref="oval:mil.disa.stig.defs:var:25299900" />
          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25299901" version="1">
          <filepath>/etc/audit/audit.rules</filepath>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S\s+unlink\s+|(\s+|,)unlink(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25300001" version="2" comment="64-bit unlink command">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S\s+unlink\s+|(\s+|,)unlink(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S\s+unlinkat\s+|(\s+|,)unlinkat(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S\s+unlinkat\s+|(\s+|,)unlinkat(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S\s+fsetxattr\s+|(\s+|,)fsetxattr(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25303401" version="1" comment="64-bit fsetxattr syscall">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S\s+fsetxattr\s+|(\s+|,)fsetxattr(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25303402" version="1" comment="32-bit fsetxattr syscall">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S\s+fsetxattr\s+|(\s+|,)fsetxattr(\s+|,))).*-F\s+auid=0(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
          <instance datatype="int" operation="greater than or equal">1</instance>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25303403" version="1" comment="64-bit fsetxattr syscall">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S\s+fsetxattr\s+|(\s+|,)fsetxattr(\s+|,))).*-F\s+auid=0(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match" var_ref="oval:mil.disa.stig.defs:var:25303500" />
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          <filepath>/etc/audit/audit.rules</filepath>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S\s+fremovexattr\s+|(\s+|,)fremovexattr(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S\s+lremovexattr\s+|(\s+|,)lremovexattr(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S\s+lremovexattr\s+|(\s+|,)lremovexattr(\s+|,))).*-F\s+auid&gt;=1000\s+-F\s+auid!=(4294967295|-1|unset)(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
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          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(?:.*(-S\s+lremovexattr\s+|(\s+|,)lremovexattr(\s+|,))).*-F\s+auid=0(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25303703" version="3" comment="64-bit lremovexattr syscall (invoked by root)">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match">^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(?:.*(-S\s+lremovexattr\s+|(\s+|,)lremovexattr(\s+|,))).*-F\s+auid=0(\s+(-k\s+|-F\s+key=)[-\w]+)*\s*$</pattern>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25303800" version="1">
          <filepath>/etc/audit/audit.rules</filepath>
          <pattern operation="pattern match" var_ref="oval:mil.disa.stig.defs:var:25303800" />
          <instance datatype="int" operation="greater than or equal">1</instance>
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          <pattern operation="pattern match">(?:^|\.*\n)\s*net\.ipv6\.conf\.default\.accept_ra\s*=\s*(\d+)\s*$</pattern>
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25312003" version="1" comment="all sysctl configuration files">
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25779300" version="1" comment="BLS options">
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        <textfilecontent54_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:obj:25779301" version="1" comment="/etc/default/grub GRUB_CMDLINE_LINUX">
          <filepath>/etc/default/grub</filepath>
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          <filepath datatype="string">/etc/ssh/sshd_config</filepath>
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:10001400" version="1" comment="Kerberos server package">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:10001500" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23025500" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23027300" version="1">
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        <partition_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23029200" version="1">
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        <partition_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23030000" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23047700" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23047800" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23048700" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23048800" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23048900" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23049200" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23050500" version="1">
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        <partition_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23051900" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23052600" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23053300" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23055000" version="1">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23055300" version="3">
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:23056000" version="1">
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        <partition_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:24453000" version="1">
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        <systemdunitproperty_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:24454500" version="1" comment="fapolicyd.service ActiveState">
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          <property>ActiveState</property>
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        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:24454900" version="1">
          <name>openssh-server</name>
        </rpminfo_object>
        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:25784900" version="1">
          <name>autofs</name>
        </rpminfo_object>
        <systemdunitproperty_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:25793600" version="1" comment="firewalld.service ActiveState">
          <unit>firewalld.service</unit>
          <property>ActiveState</property>
        </systemdunitproperty_object>
        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:25803500" version="1">
          <name>usbguard</name>
        </rpminfo_object>
        <systemdunitproperty_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:25803600" version="1" comment="usbguard.service ActiveState">
          <unit>usbguard.service</unit>
          <property>ActiveState</property>
        </systemdunitproperty_object>
        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:25808900" version="1">
          <name>fapolicyd</name>
        </rpminfo_object>
        <systemdunitproperty_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:25814200" version="2">
          <unit>rsyslog.service</unit>
          <property>ActiveState</property>
        </systemdunitproperty_object>
        <systemdunitproperty_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:25815200" version="1">
          <unit>auditd.service</unit>
          <property>ActiveState</property>
        </systemdunitproperty_object>
        <systemdunitproperty_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:25815201" version="1">
          <unit>auditd.service</unit>
          <property>SubState</property>
        </systemdunitproperty_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:10000602" version="2">
          <path datatype="string">/sys/firmware/efi</path>
          <filename xsi:nil="true" />
        </file_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:10001200" version="1">
          <name>net.ipv6.conf.all.disable_ipv6</name>
        </sysctl_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:20000008" version="1" comment="All files in system command directories">
          <path datatype="string" var_ref="oval:mil.disa.stig.defs:var:20000003" var_check="at least one" />
          <filename datatype="string" operation="pattern match">.*</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:20000009" version="1" comment="All files in system command directories, less symbolic links">
          <set xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" set_operator="UNION">
            <object_reference>oval:mil.disa.stig.unix:obj:20000008</object_reference>
            <filter>oval:mil.disa.stig.unix:ste:20000002</filter>
          </set>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:20000011" version="1" comment="Audit log file location">
          <filepath var_ref="oval:mil.disa.stig.defs:var:20000004" />
        </file_object>
        <password_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:20000016" version="1" comment="Users with an username">
          <username datatype="string" operation="pattern match">[\w]+</username>
        </password_object>
        <password_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:20000017" version="1" comment="only non-system users (uid&gt;999) home-dirs">
          <set xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" set_operator="COMPLEMENT">
            <object_reference>oval:mil.disa.stig.unix:obj:20000016</object_reference>
            <filter>oval:mil.disa.stig.unix:ste:20000017</filter>
          </set>
        </password_object>
        <password_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:20000018" version="1" comment="only root users (uid=0) home-dirs">
          <set xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" set_operator="COMPLEMENT">
            <object_reference>oval:mil.disa.stig.unix:obj:20000016</object_reference>
            <filter>oval:mil.disa.stig.unix:ste:20000018</filter>
          </set>
        </password_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23023800" version="1" comment="/etc/*.keytab">
          <path datatype="string">/etc</path>
          <filename datatype="string" operation="pattern match">\.keytab$</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23024500" version="1">
          <filepath>/var/log/messages</filepath>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23024600" version="1">
          <filepath>/var/log/messages</filepath>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23024700" version="1">
          <filepath>/var/log/messages</filepath>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23024800" version="1">
          <path>/var/log</path>
          <filename xsi:nil="true" />
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23024900" version="1">
          <path>/var/log</path>
          <filename xsi:nil="true" />
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23025000" version="1" comment="/var/log directory">
          <path>/var/log</path>
          <filename xsi:nil="true" />
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23025800" version="2" comment="All files in system command directories">
          <path datatype="string" var_ref="oval:mil.disa.stig.defs:var:20000003" var_check="at least one" />
          <filename datatype="string" operation="pattern match">.*</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23025801" version="2" comment="All files in system command directories, less symbolic links">
          <set xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" set_operator="UNION">
            <object_reference>oval:mil.disa.stig.unix:obj:23025800</object_reference>
            <filter>oval:mil.disa.stig.unix:ste:23025800</filter>
          </set>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23026003" version="1">
          <behaviors recurse_direction="down" />
          <path var_ref="oval:mil.disa.stig.defs:var:20000018" var_check="only one" />
          <filename operation="pattern match">.*</filename>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:23026005</filter>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:23026003</filter>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23026004" version="1">
          <behaviors recurse_direction="down" />
          <path var_ref="oval:mil.disa.stig.defs:var:20000018" var_check="only one" />
          <filename operation="pattern match">.*</filename>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:23026005</filter>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:23026004</filter>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23026100" version="1">
          <behaviors recurse_direction="down" />
          <path var_ref="oval:mil.disa.stig.defs:var:20000018" var_check="only one" />
          <filename operation="pattern match">.*</filename>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:20000015</filter>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5">oval:mil.disa.stig.unix:ste:20000005</filter>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23026200" version="1">
          <behaviors recurse_direction="down" />
          <path var_ref="oval:mil.disa.stig.defs:var:20000018" var_check="only one" />
          <filename operation="pattern match">.*</filename>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:20000015</filter>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5">oval:mil.disa.stig.unix:ste:20000006</filter>
        </file_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23026600" version="1">
          <name>kernel.kexec_load_disabled</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23026700" version="1">
          <name>fs.protected_symlinks</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23026800" version="1">
          <name>fs.protected_hardlinks</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23026900" version="1">
          <name>kernel.dmesg_restrict</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23027000" version="1">
          <name>kernel.perf_event_paranoid</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23028000" version="1">
          <name>kernel.randomize_va_space</name>
        </sysctl_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23028300" version="1">
          <behaviors max_depth="-1" recurse="directories" recurse_direction="down" recurse_file_system="local" />
          <path>/</path>
          <filename>shosts.equiv</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23028400" version="1">
          <behaviors max_depth="-1" recurse="directories" recurse_direction="down" recurse_file_system="local" />
          <path>/</path>
          <filename>.shosts</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23028600" version="1">
          <behaviors max_depth="-1" recurse_direction="down" />
          <path>/etc/ssh</path>
          <filename operation="pattern match">^.*\.pub$</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23028700" version="1" comment="SSH private key files">
          <path>/etc/ssh</path>
          <filename operation="pattern match">^ssh_host_.*_key$</filename>
        </file_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23031100" version="1">
          <name>kernel.core_pattern</name>
        </sysctl_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23032500" version="2" comment="local initialization files of non-system users.">
          <path var_ref="oval:mil.disa.stig.defs:var:23032500" var_check="at least one" />
          <filename operation="pattern match">^\.[^\s\.]+</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23032501" version="2" comment="local initialization files of root user.">
          <path var_ref="oval:mil.disa.stig.defs:var:23032501" var_check="at least one" />
          <filename operation="pattern match">^\.[^\s\.]+</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23035100" version="2" comment="dconf database directories">
          <behaviors max_depth="1" recurse_direction="down" />
          <path>/etc/dconf/db</path>
          <filename xsi:nil="true" />
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:23035100</filter>
        </file_object>
        <password_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23036401" version="2" comment="Users with a password age of zero minus system users">
          <username datatype="string" operation="equals" var_ref="oval:mil.disa.stig.defs:var:23036400" var_check="at least one" />
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5">oval:mil.disa.stig.unix:ste:23036400</filter>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5">oval:mil.disa.stig.unix:ste:23036401</filter>
        </password_object>
        <shadow_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23036700" version="3" comment="/etc/shadow max password ages for non-system users">
          <username datatype="string" operation="pattern match">.+</username>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:23036702</filter>
        </shadow_object>
        <password_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23036701" version="3" comment="interactive non-anonymous users">
          <username datatype="string" operation="pattern match">.*</username>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:23036704</filter>
          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:23036703</filter>
        </password_object>
        <shadow_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23036702" version="1" comment="/etc/shadow max password age for root">
          <username datatype="string">root</username>
        </shadow_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23039700" version="2" comment="Audit log file location">
          <filepath var_ref="oval:mil.disa.stig.defs:var:23039700" />
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23040100" version="1" comment="Audit log directory">
          <path var_ref="oval:mil.disa.stig.defs:var:23029400" />
          <filename xsi:nil="true" />
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23047100" version="1">
          <filepath>/etc/audit/auditd.conf</filepath>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23047101" version="1">
          <path>/etc/audit/rules.d</path>
          <filename operation="pattern match">.rules$</filename>
        </file_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23047200" version="1" comment="audit tools">
          <filepath datatype="string" var_ref="oval:mil.disa.stig.defs:var:23047200" var_check="at least one" />
        </file_object>
        <process58_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23052601" version="1">
          <command_line datatype="string" operation="pattern match">^/usr/sbin/sshd\b</command_line>
          <pid datatype="int" operation="greater than">1</pid>
        </process58_object>
        <symlink_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23052900" version="1">
          <filepath>/etc/systemd/system/ctrl-alt-del.target</filepath>
        </symlink_object>
        <symlink_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23053200" version="1" comment="debug-shell.service file">
          <filepath>/etc/systemd/system/debug-shell.service</filepath>
        </symlink_object>
        <password_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23053400" version="1">
          <username operation="not equal">root</username>
        </password_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23053500" version="1">
          <name>net.ipv6.conf.default.accept_redirects</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23053600" version="1">
          <name>net.ipv4.conf.all.send_redirects</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23053700" version="1">
          <name>net.ipv4.icmp_echo_ignore_broadcasts</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23053800" version="1">
          <name>net.ipv6.conf.all.accept_source_route</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23053904" version="1">
          <name>net.ipv6.conf.default.accept_source_route</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054000" version="1">
          <name>net.ipv6.conf.all.forwarding</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054100" version="1">
          <name>net.ipv6.conf.all.accept_ra</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054300" version="2">
          <name>net.ipv4.conf.default.send_redirects</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054400" version="1">
          <name>net.ipv6.conf.all.accept_redirects</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054500" version="1">
          <name>kernel.unprivileged_bpf_disabled</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054600" version="1">
          <name>kernel.yama.ptrace_scope</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054700" version="1">
          <name>kernel.kptr_restrict</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054800" version="1">
          <name>user.max_user_namespaces</name>
        </sysctl_object>
        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23054900" version="1">
          <name>net.ipv4.conf.all.rp_filter</name>
        </sysctl_object>
        <interface_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23055400" version="1" comment="All Interfaces">
          <name operation="pattern match">.*</name>
        </interface_object>
        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:23764200" version="1" comment="/etc/sudoers.d config files, excluding files ending with ~ or containing .">
          <path>/etc/sudoers.d</path>
          <filename operation="pattern match">^[^.]*[^.~]$</filename>
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        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:24455200" version="1">
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        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:25170900" version="2" comment="All system-wide library directories">
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        <symlink_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:25171800" version="1">
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        <sysctl_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:25312000" version="1">
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        <file_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:25789001" version="1" comment="home directories of local interactive users without nologin">
          <path var_ref="oval:mil.disa.stig.defs:var:25789000" var_check="at least one" />
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        <password_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:obj:25804500" version="1" comment="Interactive Users">
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          <filter xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" action="include">oval:mil.disa.stig.unix:ste:25804500</filter>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000014" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000015" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000016" version="1">
          <subexpression datatype="string" operation="pattern match">^(yes|"yes")$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000017" version="1">
          <subexpression datatype="string" operation="pattern match">^(no|"no")$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000018" version="1">
          <subexpression datatype="string" operation="pattern match">^[123]$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000019" version="2">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000020" version="2">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000021" version="2">
          <subexpression datatype="string" operation="pattern match">^(True|1|yes)$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000022" version="1">
          <subexpression datatype="string" operation="pattern match">(?i)^yes$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000024" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:20000027" version="2">
          <subexpression datatype="string" operation="pattern match">(?i)(?:^|\n)[^#]*\btype\s*=\s*"omfwd"</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23023100" version="1">
          <subexpression datatype="string" operation="equals">SHA512</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23023200" version="1" comment="Exclude inactive/locked hashes (with leading '!' or '*').">
          <subexpression datatype="string" operation="pattern match">^[!*]</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23023201" version="1" comment="Exclude hashes with leading '$6'.">
          <subexpression datatype="string" operation="pattern match">^[$][6]</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23023300" version="2">
          <subexpression datatype="int" operation="greater than or equal">100000</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23023400" version="2">
          <subexpression datatype="string" operation="pattern match">^\S+$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23023401" version="3">
          <subexpression datatype="string" operation="pattern match">^grub\.pbkdf2\.sha512</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23024000" version="1" comment="/sys/fs/selinux/enforce != 0">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23024001" version="1" comment="/etc/selinux/config:SELINUX=enforcing">
          <subexpression datatype="string">enforcing</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23025501" version="2">
          <subexpression datatype="string" operation="pattern match">TLSv1\.[2|3]</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23025502" version="2">
          <subexpression datatype="string" operation="pattern match">DTLSv1\.[2|3]</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23026400" version="1">
          <text datatype="string" operation="pattern match">\n\s*gpgcheck\s*=\s*(True|1|yes)\s*(\n|$)</text>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23026401" version="1">
          <text datatype="string" operation="pattern match">\n\s*gpgcheck\s*=\s*(False|0|no)\s*(\n|$)</text>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23026801" version="1">
          <subexpression datatype="int" operation="equals">1</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23026900" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23027800" version="1">
          <subexpression operation="pattern match">(^|\s)vsyscall=none(\s|$)</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23027900" version="1">
          <subexpression operation="pattern match">(^|\s)slub_debug=P(\s|$)</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23028000" version="1">
          <subexpression datatype="int" operation="equals">2</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23028200" version="1">
          <subexpression>targeted</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23030100" version="1">
          <subexpression operation="pattern match">(?:^nodev$|^nodev,|,nodev$|,nodev,)</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23030600" version="1">
          <subexpression operation="pattern match">^.*noexec.*$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23031100" version="1">
          <subexpression datatype="string" operation="equals">|/bin/false</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23031300" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23031500" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23031600" version="2" comment="hosts entry contains dns">
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        <variable_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23031601" version="2" comment="/etc/resolv.conf is configured with at least two name servers">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23033300" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23033400" version="2">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23033500" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23034600" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23035100" version="1">
          <text datatype="string" operation="pattern match">\nremoval-action='lock-screen'\s*(\n|$)</text>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23036000" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23036100" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23036200" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23036300" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23036500" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23036600" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23036900" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23037300" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23037800" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23038300" version="1">
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          <subexpression operation="pattern match">(?i)^syslog$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039001" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039002" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039200" version="1">
          <subexpression operation="pattern match">(?i)^syslog$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039201" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039202" version="1">
          <subexpression operation="pattern match">(?i)^halt$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039400" version="1">
          <subexpression operation="pattern match">(?i)^hostname$</subexpression>
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039401" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039402" version="1">
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        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23039500" version="1">
          <subexpression operation="pattern match">(?i)^enriched$</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23046800" version="2">
          <subexpression operation="pattern match">(^|\s)audit=1(\s|$)</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23046900" version="2">
          <subexpression datatype="int" operation="greater than or equal">8192</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23048300" version="1">
          <subexpression>25%</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23049100" version="1">
          <subexpression operation="pattern match">(^|\s)pti=on(\s|$)</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23050900" version="1">
          <subexpression operation="pattern match">(?:^nosuid$|^nosuid,|,nosuid$|,nosuid,)</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23051001" version="1">
          <subexpression operation="pattern match">(?:^noexec$|^noexec,|,noexec$|,noexec,)</subexpression>
        </textfilecontent54_state>
        <variable_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23051100" version="1">
          <value entity_check="at least one">nodev</value>
        </variable_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23051200" version="1">
          <subexpression operation="pattern match">^.*nosuid.*$</subexpression>
        </textfilecontent54_state>
        <variable_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23051400" version="1">
          <value entity_check="at least one">nodev</value>
        </variable_state>
        <variable_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23051500" version="1">
          <value entity_check="at least one">nosuid</value>
        </variable_state>
        <variable_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23051600" version="1">
          <value entity_check="at least one">noexec</value>
        </variable_state>
        <variable_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23051700" version="1">
          <value entity_check="at least one">nodev</value>
        </variable_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23051900" version="1">
          <subexpression operation="pattern match">^.*noexec.*$</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23052000" version="1">
          <subexpression operation="pattern match">(?:^nodev$|^nodev,|,nodev$|,nodev,)</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23052101" version="1">
          <subexpression operation="pattern match">(?:^nosuid$|^nosuid,|,nosuid$|,nosuid,)</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23052500" version="1">
          <subexpression>nftables</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23052700" version="1">
          <text datatype="string" operation="pattern match">^(?i)\s*RekeyLimit\s+[1-9][0-9]*[kmg]?\s+([1-9][0-9]*[smhdw]?)+\s*$</text>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23053000" version="1">
          <subexpression>''</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23053600" version="1">
          <subexpression datatype="int" operation="equals">0</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23054701" version="2">
          <subexpression datatype="int">1</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23054703" version="1">
          <subexpression datatype="int">2</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23054900" version="1">
          <subexpression datatype="int" operation="equals">1</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:23764200" version="1">
          <subexpression datatype="string" operation="equals">/etc/sudoers.d</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:24452300" version="1" comment="emergency.service ExecStart">
          <subexpression>-/usr/lib/systemd/systemd-sulogin-shell emergency</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:24454300" version="1">
          <subexpression operation="pattern match">(?i)^email$</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25171300" version="1">
          <subexpression datatype="string" operation="pattern match">^pam_pwquality.so(\s|$)</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25725800" version="1">
          <subexpression datatype="int">900</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25779300" version="1">
          <subexpression operation="pattern match">(^|\s)page_poison=1(\s|$)</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25798801" version="1">
          <subexpression datatype="string" operation="equals">/etc/ssh/sshd_config.d/*.conf</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25799600" version="1">
          <subexpression datatype="int" operation="less than or equal">600</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25799601" version="1">
          <subexpression datatype="int" operation="greater than">0</subexpression>
        </textfilecontent54_state>
        <variable_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25804500" version="1" comment="count of passwd UIDs">
          <value datatype="int" var_ref="oval:mil.disa.stig.defs:var:25804501" />
        </variable_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25814600" version="1">
          <subexpression datatype="string" operation="equals">x509/name</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25814601" version="3">
          <subexpression datatype="string" operation="pattern match">(?i)(?:^|\n)[^#]*\bStreamDriver\.?AuthMode\s*=\s*"x509/name"</subexpression>
        </textfilecontent54_state>
        <textfilecontent54_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" id="oval:mil.disa.stig.ind:ste:25814602" version="1">
          <subexpression datatype="string" operation="pattern match">(?i)(?:^|\n)[^#]*\bStreamDriver\.?AuthMode\b</subexpression>
        </textfilecontent54_state>
        <rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:10000100" version="2">
          <version operation="pattern match">8\.[0-1]$</version>
        </rpminfo_state>
        <rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:10000200" version="1">
          <version operation="pattern match">8\.([2-9]|10)</version>
        </rpminfo_state>
        <rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:10000800" version="2">
          <version operation="pattern match">8\.[0-3]$</version>
        </rpminfo_state>
        <rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:10000900" version="1">
          <version operation="pattern match">8\.([4-9]|10)</version>
        </rpminfo_state>
        <rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:10001400" version="1" comment="1.17-18 or newer release">
          <release datatype="version" operation="greater than or equal">18</release>
          <version datatype="version" operation="equals">1.17</version>
        </rpminfo_state>
        <rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:10001401" version="1" comment="1.17 or newer version">
          <version datatype="version" operation="greater than">1.17</version>
        </rpminfo_state>
        <partition_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:20000000" version="1">
          <mount_options entity_check="at least one">noexec</mount_options>
        </partition_state>
        <partition_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:20000001" version="1">
          <mount_options entity_check="at least one">nodev</mount_options>
        </partition_state>
        <partition_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:20000002" version="1">
          <mount_options entity_check="at least one">nosuid</mount_options>
        </partition_state>
        <systemdunitproperty_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:20000003" version="1">
          <value>active</value>
        </systemdunitproperty_state>
        <systemdunitproperty_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:20000004" version="1">
          <value>running</value>
        </systemdunitproperty_state>
        <systemdunitproperty_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:20000005" version="1">
          <value>masked</value>
        </systemdunitproperty_state>
        <systemdunitproperty_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:20000006" version="1">
          <value>enabled</value>
        </systemdunitproperty_state>
        <systemdunitproperty_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:20000007" version="1">
          <value>inactive</value>
        </systemdunitproperty_state>
        <partition_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:23024000" version="2">
          <fs_type>selinuxfs</fs_type>
        </partition_state>
        <rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:23025500" version="1">
          <version datatype="version" operation="greater than or equal">20210617</version>
        </rpminfo_state>
        <partition_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:23030102" version="1">
          <device operation="pattern match">^/dev\S*$</device>
        </partition_state>
        <partition_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:23050900" version="1">
          <mount_options entity_check="at least one">nosuid</mount_options>
        </partition_state>
        <partition_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:23051600" version="1">
          <mount_options entity_check="at least one">noexec</mount_options>
        </partition_state>
        <systemdunitproperty_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:25803600" version="1" comment="usbguard.service active">
          <value>active</value>
        </systemdunitproperty_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000001" version="1" comment="File permissions is 644 or more restrictive">
          <suid datatype="boolean">false</suid>
          <sgid datatype="boolean">false</sgid>
          <sticky datatype="boolean">false</sticky>
          <uexec datatype="boolean">false</uexec>
          <gwrite datatype="boolean">false</gwrite>
          <gexec datatype="boolean">false</gexec>
          <owrite datatype="boolean">false</owrite>
          <oexec datatype="boolean">false</oexec>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000002" version="1" comment="symbolic links">
          <type entity_check="all" datatype="string" operation="equals">symbolic link</type>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000003" version="1" comment="Mode 755 or less permissive">
          <gwrite datatype="boolean">false</gwrite>
          <owrite datatype="boolean">false</owrite>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000004" version="1" comment="Mode 0600 or less permissive">
          <suid datatype="boolean">false</suid>
          <sgid datatype="boolean">false</sgid>
          <sticky datatype="boolean">false</sticky>
          <uexec datatype="boolean">false</uexec>
          <gread datatype="boolean">false</gread>
          <gwrite datatype="boolean">false</gwrite>
          <gexec datatype="boolean">false</gexec>
          <oread datatype="boolean">false</oread>
          <owrite datatype="boolean">false</owrite>
          <oexec datatype="boolean">false</oexec>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000005" version="1" comment="owned by root">
          <user_id datatype="int">0</user_id>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000006" version="1" comment="group-owned by root">
          <group_id datatype="int">0</group_id>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000007" version="1" comment="mode 0640 or less permissive">
          <suid datatype="boolean">false</suid>
          <sgid datatype="boolean">false</sgid>
          <sticky datatype="boolean">false</sticky>
          <uexec datatype="boolean">false</uexec>
          <gwrite datatype="boolean">false</gwrite>
          <gexec datatype="boolean">false</gexec>
          <oread datatype="boolean">false</oread>
          <owrite datatype="boolean">false</owrite>
          <oexec datatype="boolean">false</oexec>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000008" version="1" comment="mode 0755 or less permissive">
          <suid datatype="boolean">false</suid>
          <sgid datatype="boolean">false</sgid>
          <sticky datatype="boolean">false</sticky>
          <gwrite datatype="boolean">false</gwrite>
          <owrite datatype="boolean">false</owrite>
        </file_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000009" version="1">
          <value datatype="int" operation="equals">0</value>
        </sysctl_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000010" version="1">
          <value datatype="int" operation="equals">1</value>
        </sysctl_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000011" version="1">
          <value datatype="int" operation="equals">2</value>
        </sysctl_state>
        <symlink_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000013" version="1">
          <canonical_path>/dev/null</canonical_path>
        </symlink_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000015" version="1">
          <type>regular</type>
        </file_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000016" version="1" comment="only users with the home directory defined">
          <home_dir datatype="string" operation="pattern match">.+</home_dir>
        </password_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000017" version="1" comment="only uids &lt; 1000">
          <user_id entity_check="all" datatype="int" operation="less than">1000</user_id>
        </password_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000018" version="1" comment="only uids &gt; 0">
          <user_id entity_check="all" datatype="int" operation="greater than">0</user_id>
        </password_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000019" version="1" comment="mode 0750 or less permissive">
          <suid datatype="boolean">false</suid>
          <sgid datatype="boolean">false</sgid>
          <sticky datatype="boolean">false</sticky>
          <gread datatype="boolean">false</gread>
          <gexec datatype="boolean">false</gexec>
          <oread datatype="boolean">false</oread>
          <owrite datatype="boolean">false</owrite>
          <oexec datatype="boolean">false</oexec>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:20000020" version="2" comment="mode 0740 or less permissive">
          <suid datatype="boolean">false</suid>
          <sgid datatype="boolean">false</sgid>
          <sticky datatype="boolean">false</sticky>
          <gwrite datatype="boolean">false</gwrite>
          <gexec datatype="boolean">false</gexec>
          <oread datatype="boolean">false</oread>
          <owrite datatype="boolean">false</owrite>
          <oexec datatype="boolean">false</oexec>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23025800" version="2" comment="symbolic links">
          <type entity_check="all" datatype="string" operation="equals">symbolic link</type>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23025900" version="1">
          <group_id datatype="int" operation="less than">1000</group_id>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23026003" version="1">
          <gwrite datatype="boolean">true</gwrite>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23026004" version="1">
          <owrite datatype="boolean">true</owrite>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23026005" version="1">
          <type>regular</type>
        </file_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23026800" version="1">
          <value datatype="int" operation="equals">1</value>
        </sysctl_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23026900" version="1">
          <value datatype="int" operation="equals">1</value>
        </sysctl_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23028000" version="1">
          <value datatype="int" operation="equals">2</value>
        </sysctl_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23031100" version="1">
          <value datatype="string" operation="equals">|/bin/false</value>
        </sysctl_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23035100" version="1" comment="dconf database directories">
          <path operation="pattern match">^/etc/dconf/db/.*\.d$</path>
        </file_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23036400" version="1">
          <user_id datatype="int" operation="less than">1000</user_id>
        </password_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23036401" version="1">
          <user_id datatype="int" operation="equals" var_ref="oval:mil.disa.stig.defs:var:23036401" var_check="all" />
        </password_state>
        <shadow_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23036700" version="1" comment="greater than zero">
          <chg_req datatype="int" operation="greater than">0</chg_req>
        </shadow_state>
        <shadow_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23036701" version="1" comment="less than or equal to sixty">
          <chg_req datatype="int" operation="less than or equal">60</chg_req>
        </shadow_state>
        <shadow_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23036702" version="1" comment="Lines starting with usernames of system users">
          <username datatype="string" operation="pattern match" var_ref="oval:mil.disa.stig.defs:var:23036700" var_check="at least one" />
        </shadow_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23036703" version="2" comment="anonymous users">
          <user_id datatype="int" operation="not equal" var_ref="oval:mil.disa.stig.defs:var:23036701" var_check="all" />
        </password_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23036704" version="2">
          <user_id datatype="int" operation="greater than or equal">1000</user_id>
        </password_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23040100" version="1" comment="Mode 0700 or less permissive">
          <suid datatype="boolean">false</suid>
          <sgid datatype="boolean">false</sgid>
          <sticky datatype="boolean">false</sticky>
          <gread datatype="boolean">false</gread>
          <gwrite datatype="boolean">false</gwrite>
          <gexec datatype="boolean">false</gexec>
          <oread datatype="boolean">false</oread>
          <owrite datatype="boolean">false</owrite>
          <oexec datatype="boolean">false</oexec>
        </file_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23053400" version="1">
          <user_id datatype="int" operation="not equal">0</user_id>
        </password_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23053600" version="1">
          <value datatype="int" operation="equals">0</value>
        </sysctl_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23054700" version="2">
          <value datatype="int">1</value>
        </sysctl_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23054702" version="1">
          <value datatype="int">2</value>
        </sysctl_state>
        <sysctl_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23054900" version="1">
          <value datatype="int" operation="equals">1</value>
        </sysctl_state>
        <interface_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:23055400" version="1" comment="Interface is not in PROMISC mode">
          <flag entity_check="none satisfy" operation="pattern match">(^|\s)PROMISC(\s|$)</flag>
        </interface_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:25170800" version="1">
          <type>directory</type>
        </file_state>
        <file_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:25170900" version="1">
          <type>directory</type>
        </file_state>
        <symlink_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:25171800" version="1">
          <canonical_path operation="pattern match">[\S]*\/multi\-user\.target$</canonical_path>
        </symlink_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:25789000" version="3" comment="nologin shell">
          <login_shell operation="pattern match">^.*nologin.*$</login_shell>
        </password_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:25789002" version="2" comment="uid &lt; 1000">
          <user_id datatype="int" operation="less than">1000</user_id>
        </password_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:25789003" version="1" comment="uid = 65534 (nobody)">
          <user_id datatype="int">65534</user_id>
        </password_state>
        <password_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" id="oval:mil.disa.stig.unix:ste:25804500" version="1" comment="Interactive Users">
          <user_id datatype="int" operation="greater than or equal">1000</user_id>
        </password_state>
      </states>
      <variables>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000003" version="1" datatype="string" comment="system command directories">
          <value>/bin</value>
          <value>/sbin</value>
          <value>/usr/bin</value>
          <value>/usr/sbin</value>
          <value>/usr/local/bin</value>
          <value>/usr/local/sbin</value>
        </constant_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:20000004" version="1" datatype="string" comment="Audit log location from /etc/audit/auditd.conf">
          <object_component object_ref="oval:mil.disa.stig.ind:obj:20000001" item_field="subexpression" />
        </local_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000005" version="2" datatype="string" comment="Directories containing sysctl configuration files">
          <value>/etc/sysctl.d</value>
          <value>/run/sysctl.d</value>
          <value>/lib/sysctl.d</value>
          <value>/usr/lib/sysctl.d</value>
          <value>/usr/local/lib/sysctl.d</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000006" version="2" datatype="string" comment="Append an audit rule">
          <value>^\s*-a\s+(?:always,exit|exit,always)</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000007" version="2" datatype="string" comment="Audit 32-bit architecture">
          <value>\s+-F\s+arch=b32</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000008" version="2" datatype="string" comment="Audit 64-bit architecture">
          <value>\s+-F\s+arch=b64</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000009" version="2" datatype="string" comment="Allow for multiple -S fields">
          <value>\s+(?:-S\s+[,\w]+\s+)*</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000010" version="2" datatype="string" comment="Allow for leading syscalls">
          <value>-S\s+[,\w]*\b</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000011" version="2" datatype="string" comment="Allow for trailing syscalls">
          <value>\b[,\w]*</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000012" version="2" datatype="string" comment="Filter out system UIDs">
          <value>-F\s+auid&gt;=1000\s+-F\s+auid!=(?:4294967295|-1|unset)</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000013" version="2" datatype="string" comment="Key field">
          <value>(?:\s+(?:-k\s+|-F\s+key=)[-\w]+)*\s*$</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000016" version="1" datatype="string" comment="Filter out non-root UIDs.">
          <value>-F\s+auid=0</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000017" version="1" datatype="string" comment="system sysctl configuration file locations">
          <value>/run/sysctl.d</value>
          <value>/lib/sysctl.d</value>
          <value>/usr/lib/sysctl.d</value>
          <value>/usr/local/lib/sysctl.d</value>
        </constant_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:20000018" version="1" datatype="string" comment="system-wide shared library files directories">
          <value>/lib</value>
          <value>/lib64</value>
          <value>/usr/lib</value>
          <value>/usr/lib64</value>
        </constant_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23029400" version="1" datatype="string" comment="audit data directory from /etc/audit/auditd.conf">
          <object_component object_ref="oval:mil.disa.stig.ind:obj:23029402" item_field="subexpression" />
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23029401" version="1" datatype="string" comment="regex to find audit data partition in /etc/fstab">
          <concat>
            <literal_component>^[^# \t]+\s+</literal_component>
            <object_component object_ref="oval:mil.disa.stig.ind:obj:23029402" item_field="subexpression" />
            <literal_component>\s+</literal_component>
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23032500" version="1" datatype="string" comment="The home directories of non-system users.">
          <object_component object_ref="oval:mil.disa.stig.unix:obj:20000017" item_field="home_dir" />
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23032501" version="1" datatype="string" comment="The home directory of the root user.">
          <object_component object_ref="oval:mil.disa.stig.unix:obj:20000018" item_field="home_dir" />
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23035100" version="1" datatype="string" comment="dconf database directories">
          <object_component object_ref="oval:mil.disa.stig.unix:obj:23035100" item_field="path" />
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23036400" version="1" datatype="string" comment="Usernames of users with a minimum password age of 0 or blank">
          <object_component object_ref="oval:mil.disa.stig.ind:obj:23036402" item_field="subexpression" />
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23036401" version="1" datatype="int" comment="UID for user nobody">
          <object_component object_ref="oval:mil.disa.stig.ind:obj:23036403" item_field="subexpression" />
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23036700" version="2" datatype="string" comment="Pattern to match lines starting with usernames of system users">
          <concat>
            <literal_component datatype="string">^</literal_component>
            <object_component object_ref="oval:mil.disa.stig.unix:obj:23036701" item_field="username" />
            <literal_component datatype="string">$</literal_component>
          </concat>
        </local_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:23036701" version="1" datatype="int" comment="anonymous UIDs">
          <value>65534</value>
          <value>65535</value>
          <value>4294967294</value>
          <value>4294967295</value>
        </constant_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23039700" version="1" datatype="string" comment="audit data directory from /etc/audit/auditd.conf">
          <object_component object_ref="oval:mil.disa.stig.ind:obj:23039701" item_field="subexpression" />
        </local_variable>
        <constant_variable id="oval:mil.disa.stig.defs:var:23047200" version="1" datatype="string" comment="audit tools">
          <value>/sbin/auditctl</value>
          <value>/sbin/aureport</value>
          <value>/sbin/ausearch</value>
          <value>/sbin/autrace</value>
          <value>/sbin/auditd</value>
          <value>/sbin/rsyslogd</value>
          <value>/sbin/augenrules</value>
        </constant_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23051600" version="1" datatype="string" comment="Mount options for /var/log in /etc/fstab">
          <split delimiter=",">
            <object_component object_ref="oval:mil.disa.stig.ind:obj:23051601" item_field="subexpression" />
          </split>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:23764200" version="1" datatype="string" comment="sudoers.d config files">
          <object_component object_ref="oval:mil.disa.stig.unix:obj:23764200" item_field="filepath" />
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25299900" version="1" datatype="string" comment="Pattern for audit rule for 32-bit invocations of rmdir system call.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000007" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>rmdir</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000012" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25299901" version="1" datatype="string" comment="Pattern for audit rule for 64-bit invocations of rmdir system call.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000008" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>rmdir</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000012" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25303500" version="1" datatype="string" comment="Pattern for audit rule for 32-bit invocations of lsetxattr system call.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000007" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>lsetxattr</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000012" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25303501" version="1" datatype="string" comment="Pattern for audit rule for 64-bit invocations of lsetxattr system call.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000008" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>lsetxattr</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000012" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25303502" version="1" datatype="string" comment="Pattern for audit rule for 32-bit invocations of lsetxattr system call by root user.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000007" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>lsetxattr</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000016" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25303503" version="1" datatype="string" comment="Pattern for audit rule for 32-bit invocations of lsetxattr system call by root user.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000007" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>lsetxattr</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000016" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25303800" version="1" datatype="string" comment="Pattern for audit rule for 32-bit invocations of removexattr system call.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000007" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>removexattr</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000012" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25303801" version="1" datatype="string" comment="Pattern for audit rule for 64-bit invocations of removexattr system call.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000008" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>removexattr</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000012" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25303802" version="1" datatype="string" comment="Pattern for audit rule for 32-bit invocations of removexattr system call by root user.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000007" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>removexattr</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000016" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25303803" version="1" datatype="string" comment="Pattern for audit rule for 32-bit invocations of removexattr system call by root user.">
          <concat>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000006" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000007" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000010" />
            <literal_component>removexattr</literal_component>
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000011" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000009" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000016" />
            <variable_component var_ref="oval:mil.disa.stig.defs:var:20000013" />
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25789000" version="1" datatype="string" comment="home directories of local interactive users without nologin">
          <object_component object_ref="oval:mil.disa.stig.unix:obj:25789000" item_field="home_dir" />
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25802600" version="2" datatype="string" comment="dconf user database locks directories">
          <concat>
            <literal_component>/etc/dconf/db/</literal_component>
            <object_component object_ref="oval:mil.disa.stig.ind:obj:25802600" item_field="subexpression" />
            <literal_component>.d/locks</literal_component>
          </concat>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25804500" version="1" datatype="int" comment="count of passwd entries">
          <count>
            <object_component object_ref="oval:mil.disa.stig.unix:obj:25804500" item_field="user_id" />
          </count>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.defs:var:25804501" version="1" datatype="int" comment="count of unique UIDs">
          <count>
            <unique>
              <object_component object_ref="oval:mil.disa.stig.unix:obj:25804500" item_field="user_id" />
            </unique>
          </count>
        </local_variable>
        <constant_variable id="oval:mil.disa.stig.ind:var:23026800" version="1" datatype="string" comment="other sysctl configuration file locations">
          <value>/etc/sysctl.d</value>
          <value>/run/sysctl.d</value>
          <value>/lib/sysctl.d</value>
          <value>/usr/lib/sysctl.d</value>
          <value>/usr/local/lib/sysctl.d</value>
        </constant_variable>
        <local_variable id="oval:mil.disa.stig.ind:var:23031600" version="1" datatype="int" comment="count of unique name servers">
          <count>
            <unique>
              <object_component object_ref="oval:mil.disa.stig.ind:obj:23031602" item_field="subexpression" />
            </unique>
          </count>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.ind:var:23051400" version="1" datatype="string" comment="Mount options for /var/log in /etc/fstab">
          <split delimiter=",">
            <object_component object_ref="oval:mil.disa.stig.ind:obj:23051402" item_field="subexpression" />
          </split>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.ind:var:23051500" version="1" datatype="string" comment="Mount options for /var/log in /etc/fstab">
          <split delimiter=",">
            <object_component object_ref="oval:mil.disa.stig.ind:obj:23051502" item_field="subexpression" />
          </split>
        </local_variable>
        <constant_variable id="oval:mil.disa.stig.ind:var:23053600" version="1" datatype="string" comment="system sysctl configuration file locations">
          <value>/run/sysctl.d</value>
          <value>/lib/sysctl.d</value>
          <value>/usr/lib/sysctl.d</value>
          <value>/usr/local/lib/sysctl.d</value>
        </constant_variable>
        <local_variable id="oval:mil.disa.stig.linux:var:23051100" version="1" datatype="string" comment="Mount options for /tmp in /etc/fstab">
          <split delimiter=",">
            <object_component object_ref="oval:mil.disa.stig.ind:obj:23051102" item_field="subexpression" />
          </split>
        </local_variable>
        <local_variable id="oval:mil.disa.stig.linux:var:23051700" version="1" datatype="string" comment="Mount options for /var/log/audit in /etc/fstab">
          <split delimiter=",">
            <object_component object_ref="oval:mil.disa.stig.ind:obj:23051702" item_field="subexpression" />
          </split>
        </local_variable>
      </variables>
    </oval_definitions>
  </component>
  <component id="scap_mil.disa.stig_comp_U_RHEL_8_V2R2_STIG_SCAP_1-3_Benchmark-cpe-oval.xml" timestamp="2025-01-02T15:58:37.654-05:00">
    <oval_definitions xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" xmlns:oval="http://oval.mitre.org/XMLSchema/oval-common-5">
      <generator>
        <oval:product_name>Security Content Tool 1.2.0</oval:product_name>
        <oval:schema_version>5.11</oval:schema_version>
        <oval:timestamp>2025-01-02T03:58:37</oval:timestamp>
      </generator>
      <definitions>
        <definition id="oval:mil.disa.stig.rhel8os:def:1" version="1" class="inventory">
          <metadata>
            <title>RHEL 8 is installed</title>
            <affected family="unix">
              <platform>Red Hat Enterprise Linux 8</platform>
            </affected>
            <reference source="CPE" ref_id="cpe:/o:redhat:enterprise_linux:8" />
            <description>RHEL 8 is installed</description>
          </metadata>
          <criteria>
            <criterion test_ref="oval:mil.disa.stig.linux:tst:10000004" comment="The redhat-release package is version 8" />
          </criteria>
        </definition>
      </definitions>
      <tests>
        <rpminfo_test xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:tst:10000004" version="1" check_existence="all_exist" check="all" comment="The redhat-release package is version 8.">
          <object object_ref="oval:mil.disa.stig.linux:obj:10000004" />
          <state state_ref="oval:mil.disa.stig.linux:ste:10000003" />
        </rpminfo_test>
      </tests>
      <objects>
        <rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:obj:10000004" version="1">
          <name>redhat-release</name>
        </rpminfo_object>
      </objects>
      <states>
        <rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:mil.disa.stig.linux:ste:10000003" version="1">
          <version operation="pattern match">^8\.\d+$</version>
        </rpminfo_state>
      </states>
    </oval_definitions>
  </component>
</data-stream-collection>