bugtraq - [ GLSA 200701-26 ] KSirc: Denial of Service vulnerability

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Date: Wed, 31 Jan 2007 22:49:09 +0100
From: Raphael Marichez <falco@...too.org>
To: gentoo-announce@...too.org
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200701-26 ] KSirc: Denial of Service vulnerability

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Gentoo Linux Security Advisory                           GLSA 200701-26
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: KSirc: Denial of Service vulnerability
      Date: January 29, 2007
   Updated: January 30, 2007
      Bugs: #159658
        ID: 200701-26

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Synopsis
========

KSirc is vulnerable to a Denial of Service attack.

Background
==========

KSirc is the default KDE IRC client.

Affected packages
=================

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  kde-base/ksirc     < 3.5.5-r1                         >= 3.5.5-r1

Description
===========

KSirc fails to check the size of an incoming PRIVMSG string sent from
an IRC server during the connection process.

Impact
======

A malicious IRC server could send a long PRIVMSG string to the KSirc
client causing an assertion failure and the dereferencing of a null
pointer, resulting in a crash.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All KSirc users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=kde-base/ksirc-3.5.5-r1"

References
==========

  [ 1 ] CVE-2006-6811
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6811

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200701-26.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5

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