OL 9 must configure the use of the pam_faillock.so module in the /etc/pam.d/system-auth file.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-271837 | SRG-OS-000021-GPOS-00005 | OL09-00-003011 | SV-271837r1092223_rule | 2026-02-17 | 1 |
Description
If the pam_faillock.so module is not loaded, the system will not correctly lockout accounts to prevent password guessing attacks.
ℹ️ Check
Verify that OL 9 configures the pam_faillock.so module to exist in the "/etc/pam.d/system-auth" file with the following command:
$ grep pam_faillock.so /etc/pam.d/system-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/system-auth" file with the "preauth" line listed before pam_unix.so, this is a finding.
✔️ Fix
Configure OL 9 to include the use of the pam_faillock.so module in the /etc/pam.d/system-auth file.
Add/modify the appropriate sections of the "/etc/pam.d/system-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