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The Red Hat Enterprise Linux 10 Security Technical Implementation Guide (V1 R3) has 435 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.
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New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.
Verify RHEL 10 System Security Services Daemon (SSSD) prohibits the use of cached authentications after one day with the following command:
Note: Cached authentication settings should be configured even if smart card authentication is not used on the system.
Determine if SSSD allows cached authentications with the following command:
$ sudo grep -irs cache_credentials /etc/sssd/sssd.conf /etc/sssd/conf.d/ | grep -v "^#"
cache_credentials = true
If "cache_credentials" is set to "false" or missing from the configuration file, 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:
$ sudo grep -irs offline_credentials_expiration /etc/sssd/sssd.conf /etc/sssd/conf.d/ | grep -v "^#"
offline_credentials_expiration = 1
If "offline_credentials_expiration" is not set to a value of "1", this is a finding.
Configure RHEL 10 SSSD to prohibit the use of cached authentications after one day.
Edit the file "/etc/sssd/sssd.conf" or a configuration file in "/etc/sssd/conf.d" and add or edit the following line just below the line [pam]:
offline_credentials_expiration = 1
Restart the "sssd" service with the following command for the changes to take effect:
$ sudo systemctl restart sssd.service