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>> LibVNCServer "auth.c" Remote Authentication Bypass and Unauthorized Access Vulnerability

Title : LibVNCServer "auth.c" Remote Authentication Bypass and Unauthorized Access Vulnerability
VUPEN ID : VUPEN/ADV-2006-2797
CVE ID : CVE-2006-2450
Rated as : Critical 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2006-07-14


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format  Receive VUPEN Security notifications by SMS 

A vulnerability has been identified in LibVNCServer, which could be exploited by remote attackers to compromise a vulnerable system. This flaw is due to an error in the authentication process "auth.c", which could be exploited by remote unauthenticated attackers to gain unauthorized access to a vulnerable system via a specially crafted request.

Affected Products

LibVNCServer versions prior to 0.8.2

Solution

Upgrade to LibVNCServer version 0.8.2 :
http://sourceforge.net/projects/libvncserver/

References

http://www.vupen.com/english/advisories/2006/2797
http://sourceforge.net/project/shownotes.php?release_id=431724&group_id=32584
http://bugs.debian.org/376824

Credits

Vulnerability reported by Ludwig Nussel

ChangeLog

2006-07-14 : Initial release

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