[KDE Security Advisory] ksirc Denial of Service vulnerability

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