This entry from Security Metrics is followed up with a long laundry list of CVEs. The main one is CVE-2006-5051.
Make sure your ClearOS is up to date.
ClearOS contains backported fixes for SSH 4.3.
Reports that ClearOS are affected by this vulnerability are grossly inaccurate and represent an inability for the audit system to properly distinguish between normal and backported versions of SSH running on Linux.
Run updates to ensure that you are up to date.