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Last updated: 4/24/2014

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Vulnerability Summary for CVE-2006-2450

Original release date: 07/18/2006
Last revised: 03/07/2011


auth.c in LibVNCServer 0.7.1 allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as "Type 1 - None", which is accepted even if it is not offered by the server, a different issue than CVE-2006-2369.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.5 (HIGH) (AV:N/AC:L/AU:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Provides unauthorized access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (08/24/2006)
Not vulnerable. This issue does not affect the versions of LibVNCServer as distributed with Red Hat Enterprise Linux 2.1, 3, or 4.

References to Advisories, Solutions, and Tools

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External Source: BUGTRAQ
Name: 20060811 Re: [ GLSA 200608-12 ] x11vnc: Authentication bypass in included LibVNCServer code
External Source: SECUNIA
Name: 21179
External Source: GENTOO
Name: GLSA-200608-05
External Source: SECUNIA
Name: 24525
External Source: CONFIRM
Name: http://sourceforge.net/project/shownotes.php?release_id=431724&group_id=32584
Type: Patch Information
External Source: CONFIRM
Name: http://libvncserver.cvs.sourceforge.net/libvncserver/libvncserver/libvncserver/auth.c?r1=1.11&r2=1.14&diff_format=u
Type: Patch Information
External Source: MISC
Name: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=376824
Type: Patch Information
External Source: SECUNIA
Name: 20940
Type: Advisory; Patch Information
External Source: GENTOO
Name: GLSA-200703-19
External Source: VUPEN
Name: ADV-2006-2797
External Source: SECUNIA
Name: 21393
External Source: SECUNIA
Name: 21349
External Source: BID
Name: 18977
External Source: SUSE
Name: SUSE-SA:2006:042
External Source: GENTOO
Name: GLSA-200608-12
External Source: SECUNIA
Name: 21405

Technical Details

Vulnerability Type (View All)