USN-569-1: libxml2 vulnerability

14 January 2008

libxml2 vulnerability

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

  • Ubuntu 7.10
  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description

  • libxml2


Brad Fitzpatrick discovered that libxml2 did not correctly handle certain UTF-8 sequences. If a remote attacker were able to trick a user or automated system into processing a specially crafted XML document, the application linked against libxml2 could enter an infinite loop, leading to a denial of service via CPU resource consumption.

Update instructions

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

Ubuntu 7.10
libxml2 - 2.6.30.dfsg-2ubuntu1.1
Ubuntu 7.04
libxml2 - 2.6.27.dfsg-1ubuntu3.1
Ubuntu 6.10
libxml2 - 2.6.26.dfsg-2ubuntu4.1
Ubuntu 6.06 LTS
libxml2 - 2.6.24.dfsg-1ubuntu1.1

To update your system, please follow these instructions:

After a standard system upgrade you need to restart your session to effect the necessary changes.