STIGQter STIGQter: STIG Summary: Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Jul 2026:

AlmaLinux OS 9 must prohibit the use of cached authenticators after one day.

DISA Rule

SV-269409r1050292_rule

Vulnerability Number

V-269409

Group Title

SRG-OS-000383-GPOS-00166

Rule Version

ALMA-09-038630

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure the SSSD to prohibit the use of cached authentications after one day.

Add/modify the following line in "/etc/sssd/sssd.conf" (or a conf file in /etc/sssd/conf.d/) just below the line [pam]:

offline_credentials_expiration = 1

Check Contents

Note: If smart card authentication is not being used on the system, this requirement is Not Applicable.

Verify that the System Security Services Daemon (SSSD) prohibits the use of cached authentications after one day.

Check that SSSD allows cached authentications with the following command:

$ grep cache_credentials /etc/sssd/sssd.conf /etc/sssd/conf.d/*

/etc/sssd/conf.d/certificate_verification.conf:cache_credentials = true

If "cache_credentials" is set to "false" or missing from the configuration, this is not a finding and no further checks are required.

If "cache_credentials" is set to "true", check that SSSD prohibits the use of cached authentications after one day with the following command:

$ grep offline_credentials_expiration /etc/sssd/sssd.conf /etc/sssd/conf.d/

/etc/sssd/conf.d/certificate_verification.conf:offline_credentials_expiration = 1

If "offline_credentials_expiration" is not set to a value of "1", this is a finding.

Vulnerability Number

V-269409

Documentable

False

Rule Version

ALMA-09-038630

Severity Override Guidance

Note: If smart card authentication is not being used on the system, this requirement is Not Applicable.

Verify that the System Security Services Daemon (SSSD) prohibits the use of cached authentications after one day.

Check that SSSD allows cached authentications with the following command:

$ grep cache_credentials /etc/sssd/sssd.conf /etc/sssd/conf.d/*

/etc/sssd/conf.d/certificate_verification.conf:cache_credentials = true

If "cache_credentials" is set to "false" or missing from the configuration, this is not a finding and no further checks are required.

If "cache_credentials" is set to "true", check that SSSD prohibits the use of cached authentications after one day with the following command:

$ grep offline_credentials_expiration /etc/sssd/sssd.conf /etc/sssd/conf.d/

/etc/sssd/conf.d/certificate_verification.conf:offline_credentials_expiration = 1

If "offline_credentials_expiration" is not set to a value of "1", this is a finding.

Check Content Reference

M

Target Key

5664