TOSS 5 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-282364 | SRG-OS-000021-GPOS-00005 | TOSS-05-000332 | SV-282364r1200072_rule | 2026-04-01 | 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 the "pam_faillock.so" module is present in the "/etc/pam.d/system-auth" file:
$ 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 TOSS 5 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