Ubuntu Security Notice USN-1753-1
27th February, 2013
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.
- 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
The problem can be corrected by updating your system to the following package version:
- 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: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.