This script is Copyright (C) 2009-2017 Tenable Network Security, Inc.
The remote system has an authentication bypass vulnerability.
Nessus was able to login to the remote host as 'root' via SSH with a
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.
See also :
If 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.
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 8.7
Public Exploit Available : true