SynopsisThe remote system has an authentication bypass vulnerability.
DescriptionNessus was able to login to the remote host as 'root' via SSH with a random password.
A remote attacker can exploit this to gain access to the affected host, possibly at an administrative level.
This may be due to a known issue with some versions of Ubuntu's libpam-runtime package when used in a non-default manner, although Nessus has not tried to verify the underlying cause.
SolutionIf the remote host is running Ubuntu, upgrade to libpam-runtime 1.0.1-4ubuntu5.6 / 1.0.1-9ubuntu1.1 or later.
Otherwise, make sure the root account is secured with a strong password, and SSH is configured to require authentication.