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documentation_complete: true
title: 'Ensure the Logon Failure Delay is Set Correctly in login.defs'
description: |-
To ensure the logon failure delay controlled by <tt>/etc/login.defs</tt> is set properly,
add or correct the <tt>FAIL_DELAY</tt> setting in <tt>/etc/login.defs</tt> to read as follows:
<pre>FAIL_DELAY {{{ xccdf_value("var_accounts_fail_delay") }}}</pre>
rationale: |-
Increasing the time between a failed authentication attempt and re-prompting to
enter credentials helps to slow a single-threaded brute force attack.
severity: medium
identifiers:
cce@rhel8: CCE-84037-1
cce@rhel9: CCE-83635-3
cce@rhel10: CCE-86822-4
cce@sle12: CCE-83028-1
cce@slmicro5: CCE-94093-2
references:
cis-csc: 11,3,9
cobit5: BAI10.01,BAI10.02,BAI10.03,BAI10.05
disa: CCI-000366
isa-62443-2009: 4.3.4.3.2,4.3.4.3.3
isa-62443-2013: 'SR 7.6'
iso27001-2013: A.12.1.2,A.12.5.1,A.12.6.2,A.14.2.2,A.14.2.3,A.14.2.4
nist: AC-7(b),CM-6(a)
nist-csf: PR.IP-1
srg: SRG-OS-000480-GPOS-00226
stigid@ol7: OL07-00-010430
stigid@ol8: OL08-00-020310
stigid@rhel8: RHEL-08-020310
stigid@sle12: SLES-12-010140
ocil_clause: 'the value of "FAIL_DELAY" is not set to "{{{ xccdf_value("var_accounts_fail_delay") }}}" or greater, or the line is commented out'
ocil: |-
Verify {{{ full_name }}} enforces a delay of at least {{{ xccdf_value("var_accounts_fail_delay") }}} seconds between console logon prompts following a failed logon attempt with the following command:
<pre>$ sudo grep -i "FAIL_DELAY" /etc/login.defs
FAIL_DELAY {{{ xccdf_value("var_accounts_fail_delay") }}}</pre>
platform: package[shadow-utils]
fixtext: |-
Configure the {{{ full_name }}} to enforce a delay of at least {{{ xccdf_value("var_accounts_fail_delay") }}} seconds between logon prompts following a failed console logon attempt.
Modify the "/etc/login.defs" file to set the "FAIL_DELAY" parameter to {{{ xccdf_value("var_accounts_fail_delay") }}} or greater:
FAIL_DELAY {{{ xccdf_value("var_accounts_fail_delay") }}}
srg_requirement: '{{{ full_name }}} must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.'
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