========================================================================== Ubuntu Security Notice USN-1382-1 March 05, 2012
A security issue affects these releases of Ubuntu and its derivatives:
Light Display Manager would allow unintended access to file descriptors.
Software Description: - lightdm: Display Manager
Austin Clements discovered that Light Display Manager incorrectly leaked file descriptors to child processes. A local attacker can use this to bypass intended permissions and write to the log file, cause a denial of service, or possibly have another unknown impact.
The problem can be corrected by updating your system to the following package versions:
Ubuntu 11.10: liblightdm-gobject-1-0 1.0.6-0ubuntu1.4 liblightdm-qt-1-0 1.0.6-0ubuntu1.4 lightdm 1.0.6-0ubuntu1.4 lightdm-gtk-greeter 1.0.6-0ubuntu1.4 lightdm-qt-greeter 1.0.6-0ubuntu1.4
After a standard system update you need to reboot your computer to make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-1382-1 https://launchpad.net/bugs/927060
Package Information: https://launchpad.net/ubuntu/+source/lightdm/1.0.6-0ubuntu1.4