TOSS 5 must configure the use of the pam_faillock.so module in the /etc/pam.d/system-auth file.

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

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.

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