KSirc: Denial of Service vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200701-26 / ksirc
Release Date	January 29, 2007
Latest Revision	January 30, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
kde-base/ksirc	< 3.5.5-r1	>= 3.5.5-r1	All supported architectures

Related bugreports: #159658

Synopsis

KSirc is vulnerable to a Denial of Service attack.

2. Impact Information

Background

KSirc is the default KDE IRC client.

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.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All KSirc users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4. References

CVE-2006-6811

Updated January 29, 2007

Summary: This is a Gentoo Linux Security Advisory

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