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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200608-12] x11vnc: Authentication bypass in included LibVNCServer code

Vulnerability Assessment Details

[GLSA-200608-12] x11vnc: Authentication bypass in included LibVNCServer code

Vulnerability Assessment Summary
x11vnc: Authentication bypass in included LibVNCServer code

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200608-12
(x11vnc: Authentication bypass in included LibVNCServer code)

x11vnc includes vulnerable LibVNCServer code, which fails to properly
validate protocol types effectively letting users decide what protocol
to use, such as "Type 1 - None" (GLSA-200608-05). x11vnc will accept
this security type, even if it is not offered by the server.

Impact

A possible hacker could exploit this vulnerability to gain unauthorized
access with the rights of the user running the VNC server.

Workaround

There is no known workaround at this time.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450
http://www.gentoo.org/security/en/glsa/glsa-200608-05.xml

Solution:
All x11vnc users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-misc/x11vnc-0.8.1"

Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: (C) 2006 Michel Arboi

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