LibVNCServer Remote Authentication Bypass Vulnerability

BID:18977

CVE-2006-2450 |

Info

LibVNCServer Remote Authentication Bypass Vulnerability

Bugtraq ID: 18977
Class: Design Error
CVE: CVE-2006-2450
Remote: Yes
Local: No
Published: Jul 05 2006 12:00AM
Updated: Mar 19 2007 06:04PM
Credit: Ludovic Drolez <[email protected]> reported this vulnerability.
Vulnerable: S.u.S.E. Linux Professional 10.0 OSS
S.u.S.E. Linux Professional 10.0
S.u.S.E. Linux Professional 9.3 x86_64
S.u.S.E. Linux Professional 9.3
S.u.S.E. Linux Professional 9.2 x86_64
S.u.S.E. Linux Professional 9.2
S.u.S.E. Linux Professional 9.1 x86_64
S.u.S.E. Linux Professional 9.1
S.u.S.E. Linux Professional 10.1
S.u.S.E. Linux Personal 10.0 OSS
S.u.S.E. Linux Personal 9.3 x86_64
S.u.S.E. Linux Personal 9.3
S.u.S.E. Linux Personal 9.2 x86_64
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.1 x86_64
S.u.S.E. Linux Personal 9.1
S.u.S.E. Linux Personal 10.1
LibVNCServer VNC Library 0.7.1
LibVNCServer VNC Library 0.7
LibVNCServer VNC Library 0.6
LibVNCServer VNC Library 0.5
LibVNCServer VNC Library 0.4
LibVNCServer VNC Library 0.2
LibVNCServer VNC Library 0.1 beta
Gentoo Linux
Not Vulnerable:

Discussion

LibVNCServer Remote Authentication Bypass Vulnerability

LibVNCServer is prone to an authentication-bypass vulnerability. This issue is due to a flaw in the authentication process of the affected package.

Exploiting this issue may allow attackers to gain unauthenticated, remote access to the VNC servers.

All versions of LibVNCServer are considered vulnerable to this issue.

Reports indicate that this issue is similar to the issue described in BID 17978 (RealVNC Remote Authentication Bypass Vulnerability). Note that since LibVNCServer and RealVNC do not share code, this issue is being assigned a separate BID.

Exploit / POC

LibVNCServer Remote Authentication Bypass Vulnerability

To exploit this issue, attackers will likely modify readily available open-source VNC client software.

Solution / Fix

LibVNCServer Remote Authentication Bypass Vulnerability

Solution:
The vendor has released an upstream fix to address this issue.

Please see the referenced advisories for more information.


S.u.S.E. Linux Professional 10.1

LibVNCServer VNC Library 0.1 beta

LibVNCServer VNC Library 0.2

LibVNCServer VNC Library 0.4

LibVNCServer VNC Library 0.5

LibVNCServer VNC Library 0.6

LibVNCServer VNC Library 0.7

LibVNCServer VNC Library 0.7.1

References

LibVNCServer Remote Authentication Bypass Vulnerability

References:

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