SLEM 5 must configure the Linux Pluggable Authentication Modules (PAM) to prohibit the use of cached offline authentications after one day.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-261400 | SRG-OS-000383-GPOS-00166 | SLEM-05-631015 | SV-261400r996619_rule | 2024-06-04 | 1 |
| Description |
|---|
| If cached authentication information is out of date, the validity of the authentication information may be questionable. |
| ℹ️ Check |
|---|
| Verify that SLEM 5 PAM prohibits the use of cached off line authentications after one day with the following command: Note: If SSSD is not being used on the operating system, this is not applicable. > 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", the line is commented out, or the line is missing, this is a finding. |
| ✔️ Fix |
|---|
| Configure SLEM 5 PAM to prohibit the use of cached authentications after one day. Add or modify the following line in the "/etc/sssd/sssd.conf" file, below the line "[pam]": offline_credentials_expiration = 1 |