X Server Detection

Low Nessus Plugin ID 10407


An X11 server is listening on the remote host


The remote host is running an X11 server. X11 is a client-server protocol that can be used to display graphical applications running on a given host on a remote client.

Since the X11 traffic is not ciphered, it is possible for an attacker to eavesdrop on the connection.


Restrict access to this port. If the X11 client/server facility is not used, disable TCP support in X11 entirely (-nolisten tcp).

Plugin Details

Severity: Low

ID: 10407

File Name: X.nasl

Version: $Revision: 1.37 $

Type: remote

Published: 2000/05/12

Modified: 2013/01/25

Dependencies: 17975

Risk Information

Risk Factor: Low


Base Score: 2.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N