USN-1753-1: DBus-GLib vulnerability

27 February 2013

dbus-glib vulnerability

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

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS


An attacker could send crafted input to applications using DBus-GLib and possibly escalate privileges.

Software Description

  • dbus-glib - simple interprocess messaging system


Sebastian Krahmer and Bastien Nocera discovered that DBus-GLib did not properly validate the message sender when the “NameOwnerChanged” signal was received. A local attacker could possibly use this issue to escalate their privileges.

Update instructions

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

Ubuntu 12.10
libdbus-glib-1-2 - 0.100-1ubuntu0.1
Ubuntu 12.04 LTS
libdbus-glib-1-2 - 0.98-1ubuntu1.1
Ubuntu 11.10
libdbus-glib-1-2 - 0.94-4ubuntu0.1
Ubuntu 10.04 LTS
libdbus-glib-1-2 - 0.84-1ubuntu0.3

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.