OpenSSH Client Unauthorized X11 Remote Forwarding

This script is Copyright (C) 2003-2011 Xue Yong Zhi


Synopsis :

The remote SSH client does not disable X11 forwarding.

Description :

The remote host is running a version of the OpenSSH client older than
2.3.0.

Such versions do not properly disable X11 or agent forwarding, which
could allow a malicious SSH server to gain access to the X11 display
and sniff X11 events, or gain access to the ssh-agent.

Solution :

Upgrade to OpenSSH 2.3.0 or later.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 6.2
(CVSS2#E:F/RL:OF/RC:C)

Family: Misc.

Nessus Plugin ID: 11343 ()

Bugtraq ID: 1949

CVE ID: CVE-2000-1169