'Unspecified vulnerability in portable OpenSSH before 4.4, when running on some platforms, allows remote attackers to determine the validity of usernames via unknown vectors involving a GSSAPI “authentication abort.”'
This issue was resolved in a backported fix. Current up to date versions not affected.
This issue was resolved in openssh-4.3p2-24.el5. Current versions meet or exceed this minor release.
To validate that you are running openssh-4.3p2-24.el5 or later, run the following:
rpm -qi openssh
If you need to update, run the following: