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The Oracle Linux 9 Security Technical Implementation Guide (V1 R7) has 450 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.
Note: If smart card authentication is not being used on the system, this requirement is Not Applicable.
Verify that OL 9's System Security Services Daemon (SSSD) prohibits the use of cached authentications after one day.
Check that SSSD allows cached authentications with the following command:
$ sudo grep cache_credentials /etc/sssd/sssd.conf
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 offline_credentials_expiration /etc/sssd/sssd.conf
offline_credentials_expiration = 1
If "offline_credentials_expiration" is not set to a value of "1", this is a finding.
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