This script is Copyright (C) 2015-2016 Tenable Network Security, Inc.
The remote Windows host contains a program that is affected by an
authentication bypass vulnerability.
The version of stunnel installed on the remote host is prior to
version 5.14. It is, therefore, affected by a vulnerability related
to the handling of authentication failures that involve the 'redirect'
option. In this case, only the initial connection is forwarded to the
hosts specified with 'redirect'; however, subsequent connections
established with reused SSL/TLS sessions are forwarded to the hosts
specified with 'connect' as if they were already successfully
authenticated. A remote attacker can exploit this vulnerability to
bypass authentication mechanisms.
Note that Nessus has not tested for this issue but has instead relied
only on the application's self-reported version number.
See also :
Upgrade to stunnel 5.14 or later. Alternatively, remove the 'redirect'
option from the configuration file.
Risk factor :
Medium / CVSS Base Score : 5.8
CVSS Temporal Score : 5.8
Public Exploit Available : false