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Last updated: 5/30/2016 11:38:28 PM

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Vulnerability Summary for CVE-2006-6811

Original release date: 12/29/2006
Last revised: 03/07/2011


KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG string when connecting to an Internet Relay Chat (IRC) server, which causes an assertion failure and results in a NULL pointer dereference. NOTE: this issue was originally reported as a buffer overflow.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.3 MEDIUM
Impact Subscore: 2.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable - Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (01/18/2007)
We do not consider a crash of a client application such as KsIRC to be a security issue.

References to Advisories, Solutions, and Tools

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External Source: GENTOO
Name: GLSA-200701-26
External Source: BUGTRAQ
Name: 20070109 [KDE Security Advisory] ksirc Denial of Service vulnerability
External Source: SECTRACK
Name: 1017453
External Source: XF
Name: ksirc-privmsg-bo(31134)
External Source: MILW0RM
Name: 3023
External Source: CONFIRM
Name: http://www.kde.org/info/security/advisory-20070109-1.txt
External Source: MANDRIVA
Name: MDKSA-2007:009
External Source: BID
Name: 21790
External Source: CONFIRM
Name: https://issues.rpath.com/browse/RPL-922
External Source: VUPEN
Name: ADV-2006-5199
External Source: UBUNTU
Name: USN-409-1
External Source: MISC
Name: http://www.addict3d.org/index.php?page=viewarticle&trace=0&type=security&ID=8468

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