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Home >> Browse Vulnerability Assessment Database >> Useless services >> X Display Manager Control Protocol (XDMCP)


Vulnerability Assessment Details

X Display Manager Control Protocol (XDMCP)

Vulnerability Assessment Summary
Checks if XDM has XDMCP protocol enabled

Detailed Explanation for this Vulnerability Assessment

Summary :


XDMCP is running on the remote host.

Description :

XDMCP permit a Unix user to remotely obtain a graphical X11 login
(and therefore act as a local user on the remote host).

If a possible hacker gains a valid login and password, he may
be able to use this service to gain further access
on the remote host. A possible hacker may also use this service
to mount a dictionary attack against the remote host to try
to log in remotely.

Note that XDMCP (the Remote Desktop Protocol) is vulnerable
to Man-in-the-middle attacks, making it easy for attackers to
steal the credentials of legitimates users by impersonating the
XDMCP server. In addition to this, XDMCP is not a ciphered protocol
which make it easy for a possible hacker to capture the keystrokes
entered by the user.

Solution :

Disable the XDMCP if you do not use it, and do not permit this
service to run across the internet

Network Security Threat Level:

Low / CVSS Base Score : 1.9
(AV:R/AC:H/Au:NR/C:P/I:N/A:N/B:N)

Networks Security ID:

Vulnerability Assessment Copyright: This script is Copyright (C) 2002 Pasi Eronen

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