Vulnerability Discussion
Unauthorized disclosure of the contents of the /var/log/lastlog file can reveal system data to attackers, thus compromising its confidentiality.
Check
Verify the "lastlog" command is owned by root with the following command:
$ sudo ls -l /usr/bin/lastlog
-rwxr-x---. 1 root root 21200 Nov 4 22:51 /usr/bin/lastlog
If the "lastlog" command is not owned by root, this is a finding.
Fix
Configure the "lastlog" command for OL 8 to be owned by root with the following command:
$ sudo chown root /usr/bin/lastlog