Title

RHEL 9 must configure the use of the pam_faillock.so module in the /etc/pam.d/password-auth file. (Cat II impact)

Discussion

If the pam_faillock.so module is not loaded, the system will not correctly lockout accounts to prevent password guessing attacks.

Check Content

Verify the pam_faillock.so module is present in the "/etc/pam.d/password-auth" file: $ grep pam_faillock.so /etc/pam.d/password-auth auth required pam_faillock.so preauth auth required pam_faillock.so authfail account required pam_faillock.so If the pam_faillock.so module is not present in the "/etc/pam.d/password-auth" file with the "preauth" line listed before pam_unix.so, this is a finding.

Fix Text

Configure RHEL 9 to include the use of the pam_faillock.so module in the /etc/pam.d/password-auth file. Add/modify the appropriate sections of the "/etc/pam.d/password-auth" file to match the following lines: Note: The "preauth" line must be listed before pam_unix.so. auth required pam_faillock.so preauth auth required pam_faillock.so authfail account required pam_faillock.so

Additional Identifiers

Rule ID: SV-258096r926275_rule

Vulnerability ID: V-258096

Group Title: SRG-OS-000021-GPOS-00005

Expert Comments

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