USN-409-1: ksirc vulnerability

Ubuntu Security Notice USN-409-1

15th January, 2007

kdenetwork vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 6.10
  • Ubuntu 6.06 LTS
  • Ubuntu 5.10


Federico L. Bossi Bonin discovered a Denial of Service vulnerability
in ksirc. By sending a special response packet, a malicious IRC server
could crash ksirc.

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 6.10:
ksirc 4:3.5.5-0ubuntu1.1
Ubuntu 6.06 LTS:
ksirc 4:3.5.2-0ubuntu6.3
Ubuntu 5.10:
ksirc 4:3.4.3-0ubuntu1.1

To update your system, please follow these instructions:

In general, a standard system upgrade is sufficient to effect the
necessary changes.