Vulnerability Discussion

Without auditing of these events, it may be harder or impossible to identify what an attacker did after an attack.

Check

Verify that OL 9 logs username information when unsuccessful logon attempts occur.

Verify the "/etc/security/faillock.conf" file is configured to log username information when unsuccessful logon attempts occur with the following command:

$ grep audit /etc/security/faillock.conf
audit

If the "audit" option is not set, is missing, or is commented out, this is a finding.

Fix

Configure OL 9 to log username information when unsuccessful logon attempts occur.

Add/modify the "/etc/security/faillock.conf" file to match the following line:

audit