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---
policy: CCN-STIC-610A22
title: Security Profile Application Guide for Red Hat Enterprise Linux 9
id: ccn_rhel9
version: '2022-10'
source: https://www.ccn-cert.cni.es/pdf/guias/series-ccn-stic/guias-de-acceso-publico-ccn-stic/6768-ccn-stic-610a22-perfilado-de-seguridad-red-hat-enterprise-linux-9-0/file.html
levels:
- id: basic
- id: intermediate
inherits_from:
- basic
- id: advanced
inherits_from:
- intermediate
reference_type: ccn
product: rhel9
controls:
- id: reload_dconf_db
title: Reload Dconf Database
levels:
- basic
- intermediate
- advanced
notes: |-
This is a helper rule to reload Dconf database correctly.
status: automated
rules:
- dconf_db_up_to_date
- id: enable_authselect
title: Enable Authselect
levels:
- basic
- intermediate
- advanced
notes: |-
The policy doesn't have any section where this would fit better.
status: automated
rules:
- var_authselect_profile=sssd
- enable_authselect
- id: A.3.SEC-RHEL1
title: Session Initiation is Audited
original_title: Se auditan los inicios de sesión.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- audit_rules_session_events
- audit_rules_login_events_faillock
- audit_rules_login_events_lastlog
- id: A.3.SEC-RHEL2
title: Control Who Can Access Security and Audit Logs
original_title: Se controla quien puede acceder a los registros de seguridad y auditoría.
levels:
- intermediate
- advanced
status: automated
rules:
- file_permissions_var_log_audit
- file_ownership_var_log_audit
- file_group_ownership_var_log_audit
- directory_permissions_var_log_audit
- id: A.3.SEC-RHEL3
title: System Time Change is Controlled
original_title: Se controla el cambio de hora del sistema.
levels:
- intermediate
- advanced
status: automated
rules:
- package_chrony_installed
- chronyd_specify_remote_server
- chronyd_run_as_chrony_user
- var_multiple_time_servers=rhel
- id: A.3.SEC-RHEL4
title: Control Who Can Generate or Modify Audit Rules
original_title: Se controla quién puede generar o modificar reglas de audit.
levels:
- intermediate
- advanced
status: automated
rules:
- file_permissions_audit_configuration
- file_ownership_audit_configuration
- file_groupownership_audit_configuration
- id: A.3.SEC-RHEL5
title: A Detailed Audit Has Been Implemented Based on Subcategories
original_title: Se ha implementado la auditoría detallada basada en subcategorías.
levels:
- intermediate
- advanced
status: pending
notes: |-
It is not clear the intention of this requirement since there is no definition of these
subcategories. The project has many audit related rules. Clarifying these subcategories
we can select the proper rules.
- id: A.3.SEC-RHEL6
title: At Least 90 Days of Activity Logs Are Guaranteed
original_title: Se garantiza al menos 90 días de registros de actividad.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- auditd_data_retention_max_log_file_action
- var_auditd_max_log_file_action=keep_logs
- id: A.3.SEC-RHEL7
title: Modifications to the Sudoers File Are Audited, As Are Changes to Permissions, Users, Groups, and Passwords
original_title: Se auditan las modificaciones del fichero sudoers, así como los cambios en permisos, usuarios, grupos y contraseñas.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- audit_sudo_log_events
- audit_rules_usergroup_modification_group
- audit_rules_usergroup_modification_gshadow
- audit_rules_usergroup_modification_opasswd
- audit_rules_usergroup_modification_passwd
- audit_rules_usergroup_modification_shadow
- audit_rules_sysadmin_actions
- audit_rules_dac_modification_chmod
- audit_rules_dac_modification_chown
- audit_rules_dac_modification_fchmod
- audit_rules_dac_modification_fchmodat
- audit_rules_dac_modification_fchown
- audit_rules_dac_modification_fchownat
- audit_rules_dac_modification_fremovexattr
- audit_rules_dac_modification_fsetxattr
- audit_rules_dac_modification_lchown
- audit_rules_dac_modification_lremovexattr
- audit_rules_dac_modification_lsetxattr
- audit_rules_dac_modification_removexattr
- audit_rules_dac_modification_setxattr
- id: A.3.SEC-RHEL8
title: Changes to Cron Settings and Scheduled Tasks Including Startup Scripts Are Audited
original_title: Se auditan los cambios en la configuración de Cron y en tareas programadas incluyendo los de scripts de inicio.
levels:
- advanced
status: pending
notes: |-
Some possible rules were included here but it is not clear if the requirement intends to
check more than these rules. We can see if more related rules are available in the project
and include everything that makes sense in the context of cron and chrony.
related_rules:
- audit_rules_time_adjtimex
- audit_rules_time_settimeofday
- audit_rules_time_clock_settime
- audit_rules_time_stime
- audit_rules_time_watch_localtime
- id: A.3.SEC-RHEL9
title: Attempts to Access Critical Items Are Audited
original_title: Se auditan los intentos de acceso a elementos críticos.
levels:
- advanced
status: automated
rules:
- audit_rules_unsuccessful_file_modification_creat
- audit_rules_unsuccessful_file_modification_ftruncate
- audit_rules_unsuccessful_file_modification_open
- audit_rules_unsuccessful_file_modification_openat
- audit_rules_unsuccessful_file_modification_truncate
- id: A.3.SEC-RHEL10
title: All Mount Operations on the System and Changes to the Swap Are Audited
original_title: Se audita toda operación de montaje en el sistema y modificaciones en la memoria de intercambio.
levels:
- intermediate
- advanced
status: partial
notes: |-
We probably have audit related rule to monitor mount related syscalls, but it is not clear
about the swap. Is the intention to monitor when swap is changed?
rules:
- audit_rules_media_export
- id: A.3.SEC-RHEL11
title: Modifications in PAM Files Are Audited
original_title: Se auditan modificaciones en ficheros PAM.
levels:
- advanced
status: pending
notes: |-
The intention here is probably to audit changes in /etc/pam.d files, but we need to confirm
this assumption and get more context.
- id: A.4.SEC-RHEL1
title: Common Users Do Dot Have Local Administrator Permissions and Are Not Included in a Sudo Group
original_title: Los usuarios estándar no disponen de permisos de administrador local ni se encuentran incluidos en un grupo sudoer.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
It is a little tricky to interpret this requirement. Assuming the "Common users" are actually
interactive users, this requirement would automatically enforce all admin actions to be
performed only by the root user. I am not sure if this is the intetion here.
- id: A.4.SEC-RHEL2
title: The System Has an Updated Antivirus
original_title: El sistema tiene un antivirus y este está actualizado.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
New templated rule is necessary to install the package. But to ensure the chosen antivirus
is actually updated would demand a more complex rule. Maybe this requirement can have at
leastthe partial status after the templated rule.
- id: A.4.SEC-RHEL3
title: Permissions by Partitions Are Modified
original_title: Se modifican los permisos por particiones.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
Related to nosuid, noexec and nodev options but in /boot. More context is needed.
- id: A.5.SEC-RHEL1
title: Login and Impersonation Permissions Are Controlled
original_title: Se controlan los permisos de inicio de sesión y suplantación de identidad.
levels:
- intermediate
- advanced
status: automated
rules:
- sudo_add_use_pty
- use_pam_wheel_for_su
- id: A.5.SEC-RHEL2
title: Elevation Attempts Are Controlled by Defining Users and Sudoer Groups
original_title: Se controlan los intentos de elevación mediante definición de usuarios y grupos sudoers.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- sudo_require_authentication
- sudo_require_reauthentication
- id: A.5.SEC-RHEL3
title: Access to Encryption Keys is Controlled
original_title: Se controla el acceso a las claves de cifrado.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
There are rules for ssh_keys, for example. We need to confirm the scope of this requirement
- id: A.5.SEC-RHEL4
title: Disable Insecure Encryption Algorithms
original_title: Se han deshabilitado los algoritmos de cifrado inseguros.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- configure_crypto_policy
- var_system_crypto_policy=default_policy
- id: A.5.SEC-RHEL5
title: Recurring Password Change is Required
original_title: Se exige el cambio de contraseña de forma recurrente.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- accounts_maximum_age_login_defs
- accounts_minimum_age_login_defs
- accounts_password_set_max_life_existing
- accounts_password_set_min_life_existing
- accounts_password_set_warn_age_existing
- accounts_password_warn_age_login_defs
- var_accounts_maximum_age_login_defs=45
- var_accounts_minimum_age_login_defs=2
- var_accounts_password_warn_age_login_defs=10
- id: A.5.SEC-RHEL6
title: Secure Protocols Are Used For the Network Authentication Processes
original_title: Se hace uso de protocolos seguros para los procesos de autenticación de red.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- configure_ssh_crypto_policy
- id: A.5.SEC-RHEL7
title: Network Session Inactivity is Controlled
original_title: Se controla la inactividad de la sesión de red.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- sshd_idle_timeout_value=15_minutes
- sshd_set_idle_timeout
- sshd_set_keepalive
- var_sshd_set_keepalive=1
- id: A.5.SEC-RHEL8
title: Local and Remote Console Inactivity is Controlled
original_title: Se controla la inactividad de consola local y remota.
levels:
- advanced
status: automated
rules:
- accounts_tmout
- var_accounts_tmout=5_min
- id: A.6.SEC-RHEL1
title: The Security of Sensitive System Objects is Reinforced
original_title: Se refuerza la seguridad de los objetos sensibles del sistema.
levels:
- intermediate
- advanced
status: automated
rules:
- grub2_enable_selinux
- package_libselinux_installed
- selinux_policytype
- selinux_state
- var_selinux_policy_name=targeted
- var_selinux_state=enforcing
- id: A.6.SEC-RHEL2
title: Access in Recovery Mode Including Grub Boot Modification Mode is Restricted
original_title: Se restringen accesos en modo recuperación incluido el modo modificación de inicio de grub.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- file_groupowner_grub2_cfg
- file_groupowner_user_cfg
- file_owner_grub2_cfg
- file_owner_user_cfg
- file_permissions_grub2_cfg
- file_permissions_user_cfg
- id: A.6.SEC-RHEL3
title: Service Users Shell is Limited to "/bin/false"
original_title: Se limita la shell de usuarios de servicio a "/bin/false".
levels:
- intermediate
- advanced
status: automated
notes: |-
"/sbin/nologin" might be a better option
rules:
- no_password_auth_for_systemaccounts
- no_shelllogin_for_systemaccounts
- id: A.6.SEC-RHEL4
title: The Use of Sessions With the "root" User is Restricted
original_title: Se restringe el uso de sesiones con usuario "root".
levels:
- intermediate
- advanced
status: automated
rules:
- ensure_root_password_configured
- no_empty_passwords_etc_shadow
- id: A.6.SEC-RHEL5
title: The Global System Mask is Modified To Be More Restrictive
original_title: Se modifica la máscara global del sistema para ser más restrictiva.
levels:
- advanced
status: automated
rules:
- accounts_umask_etc_bashrc
- accounts_umask_etc_login_defs
- accounts_umask_etc_profile
- var_accounts_user_umask=027
- id: A.6.SEC-RHEL6
title: Unnecessary Groups and Users are Removed From the System
original_title: Se eliminan los grupos y usuarios innecesarios del sistema.
levels:
- basic
- intermediate
- advanced
status: manual
- id: A.8.SEC-RHEL1
title: Control Who Can Install Software on the System
original_title: Se controla quién puede instalar software en el sistema.
levels:
- basic
- intermediate
- advanced
status: pending
- id: A.8.SEC-RHEL2
title: The Operating System is Updated
original_title: El sistema operativo está actualizado.
levels:
- basic
- intermediate
- advanced
status: manual
related_rules:
- security_patches_up_to_date
- id: A.8.SEC-RHEL3
title: The System Has an Activated Local Firewall
original_title: El sistema tiene un firewall local activado.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- firewalld_loopback_traffic_restricted
- firewalld_loopback_traffic_trusted
- service_firewalld_enabled
- package_firewalld_installed
- service_nftables_disabled
- set_firewalld_default_zone
- id: A.8.SEC-RHEL4
title: Unnecessary Services are Disabled, Reducing the Attack Surface
original_title: Se deshabilitan servicios innecesarios, reduciendo la superficie de exposición.
levels:
- intermediate
- advanced
status: automated
rules:
- kernel_module_squashfs_disabled
- kernel_module_udf_disabled
- package_bind_removed
- package_cyrus-imapd_removed
- package_dovecot_removed
- package_net-snmp_removed
- package_squid_removed
- package_telnet-server_removed
- package_tftp-server_removed
- package_vsftpd_removed
- id: A.8.SEC-RHEL5
title: Application Execution is Controlled
original_title: Se controla la ejecución de aplicaciones.
levels:
- advanced
status: pending
notes: |-
This might be related to SELinux or fapolicyd.
We need more context to confirm the intention of this requirement
- id: A.8.SEC-RHEL6
title: Anti-Ransomware Measures are Enabled
original_title: Se dispone de medidas anti ransomware habilitadas.
levels:
- basic
- intermediate
- advanced
status: partial
notes: |-
These are mentioned to be reviewed but not enforced:
#net.ipv4.icmp_echo_ignore_all = 1
#net.ipv4.tcp_timestamps = 0
#net.ipv4.tcp_max_syn_backlog = 1280
#sysctl_net_ipv6_conf_all_disable_ipv6
#sysctl_net_ipv6_conf_default_disable_ipv6
rules:
- sysctl_net_ipv4_conf_all_send_redirects
- sysctl_net_ipv4_conf_all_accept_redirects
- sysctl_net_ipv4_conf_all_secure_redirects
- sysctl_net_ipv4_conf_all_accept_source_route
- sysctl_net_ipv4_conf_all_log_martians
- sysctl_net_ipv4_conf_default_send_redirects
- sysctl_net_ipv4_conf_default_accept_redirects
- sysctl_net_ipv4_conf_default_secure_redirects
- sysctl_net_ipv4_conf_default_accept_source_route
- sysctl_net_ipv4_conf_default_log_martians
- sysctl_net_ipv4_icmp_ignore_bogus_error_responses
- sysctl_net_ipv4_icmp_echo_ignore_broadcasts
- sysctl_net_ipv4_tcp_syncookies
- sysctl_net_ipv6_conf_all_accept_source_route
- sysctl_net_ipv6_conf_all_accept_redirects
- sysctl_net_ipv6_conf_all_accept_ra
- sysctl_net_ipv6_conf_default_accept_source_route
- sysctl_net_ipv6_conf_default_accept_redirects
- sysctl_net_ipv6_conf_default_accept_ra
- sysctl_fs_suid_dumpable
- sysctl_net_ipv4_ip_forward
- sysctl_net_ipv4_conf_all_rp_filter
- sysctl_net_ipv4_conf_default_rp_filter
- id: A.8.SEC-RHEL7
title: Password Encrypted Boot That Prevents Modification is Enabled (Protected GRUB)
original_title: Está habilitado el arranque cifrado con contraseña que evite modificaciones (GRUB protegido).
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- grub2_password
- id: A.8.SEC-RHEL8
title: File Download is Audited
original_title: Se audita la descarga de archivos.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
Is it related to downloads from the Internet to the system or from the system to an external
storage, for example?
related_rules:
- audit_rules_file_deletion_events_rename
- audit_rules_file_deletion_events_renameat
- audit_rules_file_deletion_events_unlink
- audit_rules_file_deletion_events_unlinkat
- id: A.8.SEC-RHEL9
title: System Compilers are Disabled
original_title: Están deshabilitados los compiladores del sistema.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
Maybe simply removing the packages is enough.
- id: A.11.SEC-RHEL1
title: Local Log On To the System is Controlled
original_title: Se controla el inicio de sesión local en el sistema.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
Is it related to TTY access, physical access, local users authentication, etc?
It is not not clear the scope.
- id: A.11.SEC-RHEL2
title: The Security of the SSH Protocol is Strengthened
original_title: Se ha reforzado la seguridad del protocolo SSH.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- sshd_limit_user_access
- id: A.11.SEC-RHEL3
title: A Robust Credential Policy is In Place
original_title: Se dispone de una política de credenciales robusta.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- accounts_password_pam_minclass
- accounts_password_pam_minlen
- accounts_password_pam_retry
- var_password_pam_minclass=4
- var_password_pam_minlen=14
- id: A.11.SEC-RHEL4
title: During Login, the System Displays a Text in Compliance With the Organization's Standards or Directives
original_title: Durante el inicio de sesión, el sistema muestra un texto en cumplimiento con las normas o directivas de la organización.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- banner_etc_issue
- banner_etc_issue_net
- banner_etc_motd
- dconf_gnome_banner_enabled
- dconf_gnome_login_banner_text
- sshd_enable_warning_banner_net
- login_banner_text=cis_banners
- motd_banner_text=cis_banners
- remote_login_banner_text=cis_banners
- id: A.11.SEC-RHEL5
title: Network Acess to the System is Controlled
original_title: Se controla el acceso al sistema a través de la red.
levels:
- basic
- intermediate
- advanced
status: manual
related_rules:
- configure_firewalld_ports
- id: A.11.SEC-RHEL6
title: Only Strong Encryption Algorithms are Allowed in Accesses to the System
original_title: Sólo se permiten algoritmos de cifrado robustos en accesos al sistema.
levels:
- basic
- intermediate
- advanced
status: automated
notes: |-
It overlaps the rule in A.5.SEC-RHEL6 requirement
related_rules:
- configure_ssh_crypto_policy
- id: A.11.SEC-RHEL7
title: GUI Idle Time is Limited
original_title: Se limita el tiempo de inactividad del GUI.
levels:
- intermediate
- advanced
status: automated
rules:
- dconf_gnome_screensaver_idle_delay
- dconf_gnome_screensaver_lock_delay
- inactivity_timeout_value=5_minutes
- var_screensaver_lock_delay=immediate
- id: A.11.SEC-RHEL8
title: A Dissuasive Banner is Displayed
original_title: Se muestra un banner disuasorio.
levels:
- intermediate
- advanced
status: pending
notes: |-
It seems to duplicate the A.11.SEC-RHEL4 requirement
- id: A.11.SEC-RHEL9
title: The User List is Disabled
original_title: Se deshabilita la lista de usuarios.
levels:
- intermediate
- advanced
status: automated
rules:
- dconf_gnome_disable_user_list
- id: A.11.SEC-RHEL10
title: File History is Disabled
original_title: Se deshabilita recordar el historial de ficheros.
levels:
- intermediate
- advanced
status: pending
notes: |-
New rules might be necessary.
- id: A.11.SEC-RHEL11
title: Key Combination to Launch GTK Inspector is Disabled
original_title: Se deshabilita combinación de teclas para iniciar el inspector GTK
levels:
- intermediate
- advanced
status: pending
notes: |-
New rules might be necessary.
- id: A.11.SEC-RHEL12
title: Auto-Mounting of Removable Devices on the System is Disabled
original_title: Se deshabilita el auto montaje de dispositivos extraíbles en el sistema.
levels:
- intermediate
- advanced
status: automated
rules:
- dconf_gnome_disable_automount
- dconf_gnome_disable_automount_open
- dconf_gnome_disable_autorun
- id: A.15.SEC-RHEL1
title: The Use of Removable Storage Media is Controlled
original_title: Se controla el uso de medios de almacenamiento extraíbles.
levels:
- intermediate
- advanced
status: automated
rules:
- kernel_module_usb-storage_disabled
- id: A.19.SEC-RHEL1
title: Access to the Folder and File Tree is Controlled
original_title: Se controla el acceso al árbol de carpetas y ficheros.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
More context should be provided to clarify this requirement
- id: A.19.SEC-RHEL2
title: Measures Are Applied to Protect Accounts
original_title: Se aplican medidas para la protección de las cuentas.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
This is already covered by other requirements. Maybe more rules could be included here.
- id: A.19.SEC-RHEL3
title: A Robust Algorithm and Password Complexity Are Enabled
original_title: Está habilitado un algoritmo robusto y la complejidad de contraseñas.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- set_password_hashing_algorithm_systemauth
- set_password_hashing_algorithm_passwordauth
- set_password_hashing_algorithm_logindefs
- var_password_hashing_algorithm=SHA512
- var_password_hashing_algorithm_pam=sha512
- id: A.23.SEC-RHEL1
title: The Installation And Use of Any Device Connected to the Equipment is Controlled
original_title: Se controla la instalación y uso de cualquier dispositivo conectado al equipo.
levels:
- basic
- intermediate
- advanced
status: automated
rules:
- package_usbguard_installed
- service_usbguard_enabled
- usbguard_generate_policy
- id: A.23.SEC-RHEL2
title: The Dynamic Mounting and Unmounting of File Systems is Restricted
original_title: Se restringe el montaje y desmontaje dinámico de sistemas de archivos.
levels:
- basic
- intermediate
- advanced
status: pending
notes: |-
It seems to duplicate the A.11.SEC-RHEL12 requirement.
- id: A.24.SEC-RHEL1
title: Privileges That Affect System Performance Are Controlled
original_title: Se controlan los privilegios que afectan al rendimiento del sistema.
levels:
- intermediate
- advanced
status: pending
notes: |-
Is it about system limits?
- id: A.24.SEC-RHEL2
title: Control Who Can Turn Off the System
original_title: Se controla quien puede apagar el sistema.
levels:
- intermediate
- advanced
status: pending
related_rules:
- disable_ctrlaltdel_burstaction
- disable_ctrlaltdel_reboot
- id: A.25.SEC-RHEL1
title: System Disk is Encrypted
original_title: El disco del sistema está cifrado.
levels:
- advanced
status: automated
rules:
- encrypt_partitions
- package_cryptsetup-luks_installed
- id: A.25.SEC-RHEL2
title: The Data Disk is Encrypted
original_title: El disco de datos está cifrado.
levels:
- advanced
status: automated
notes: |-
The rules in this requirement overlaps the A.25.SEC-RHEL1 requirement
related_rules:
- package_cryptsetup-luks_installed
- encrypt_partitions
- id: A.30.SEC-RHEL1
title: There Is an Account Lockout Policy for Incorrect Logins
original_title: Existe una política de bloqueo de cuentas ante inicios de sesión incorrectos.
levels:
- advanced
status: automated
rules:
- accounts_passwords_pam_faillock_deny
- accounts_passwords_pam_faillock_unlock_time
- var_accounts_passwords_pam_faillock_deny=8
- var_accounts_passwords_pam_faillock_unlock_time=never
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