Cloud Linux AlmaLinux OS 9 STIG Version Comparison

There are 17 differences between versions v1 r3 (July 2, 2025) (the "left" version) and v1 r5 (Jan. 5, 2026) (the "right" version).

Check ALMA-09-024220 was removed from the benchmark in the "right" version. The text below reflects the old wording.

This check's original form is available here.

Title

AlmaLinux OS 9 must display the date and time of the last successful account logon upon logon.

Check Content

Verify users are provided with feedback on when account accesses last occurred with the following command: $ grep pam_lastlog /etc/pam.d/postlogin session required pam_lastlog.so showfailed If "pam_lastlog" is missing from "/etc/pam.d/postlogin" file, or the silent option is present, this is a finding.

Discussion

Users need to be aware of activity that occurs regarding their account. Providing users with information regarding the number of unsuccessful attempts that were made to login to their account allows the user to determine if any unauthorized activity has occurred and gives them an opportunity to notify administrators.

Fix

Configure AlmaLinux OS 9 to provide users with feedback on when account accesses last occurred by setting the required configuration options in "/etc/pam.d/postlogin". Add the following line to the top of "/etc/pam.d/postlogin": session required pam_lastlog.so showfailed