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KSirc: Denial of Service vulnerability


1.  Gentoo Linux Security Advisory

Version Information

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


KSirc is vulnerable to a Denial of Service attack.

2.  Impact Information


KSirc is the default KDE IRC client.


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


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


There is no known workaround at this time.


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


Page updated January 29, 2007

Summary: This is a Gentoo Linux Security Advisory

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