KDE Security Advisory: ksirc denial of service vulnerability Original Release Date: 2007-01-09 URL: http://www.kde.org/info/security/advisory-20070109-1.txt 0. References CVE-2006-6811 http://www.milw0rm.com/exploits/3023 http://www.securityfocus.com/bid/21790 1. Systems affected: ksirc as shipped with KDE 3.5.5 or older. KDE 3.5.6 and newer is not affected. 2. Overview: On 2006-12-27, a proof of concept for arbitrary code execution in ksirc was published by Federico L. Bossi Bonin. The published exploit triggers an assertion in ksirc and results in a a NULL pointer dereference (crash) for non-debug builds. 3. Impact: A malicious IRC server can crash the ksirc client. No arbitrary code execution is possible by this vulnerability. 4. Solution: Source code patches have been made available which fix these vulnerabilities. Contact your OS vendor / binary package provider for information about how to obtain updated binary packages. 5. Patch: A patch for KDE 3.5.5 is available from ftp://ftp.kde.org/pub/kde/security_patches : 72897a581daa9f71bdf61238f4c3e693 post-3.5.5-kdenetwork-ksirc.diff