USN-396-1: gdm vulnerability

14 December 2006

gdm vulnerability

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

  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description


A format string vulnerability was discovered in the gdmchooser component of the GNOME Display Manager. By typing a specially crafted host name, local users could gain gdm user privileges, which could lead to further account information exposure.

Update instructions

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

Ubuntu 6.10
gdm - 2.16.1-0ubuntu4.1
Ubuntu 6.06 LTS
gdm - 2.14.10-0ubuntu1.1

To update your system, please follow these instructions:

After a standard system upgrade you need to reboot your computer to effect the necessary changes.