Ubuntu Update for Linux kernel vulnerabilities USN-983-1

Please Install the Updated Packages.

Markus Wuethrich discovered that sudo did not always verify the user when a group was specified in the Runas_Spec. A local attacker could exploit this to execute arbitrary code as root if sudo was configured to allow the attacker to use a program as a group when the attacker was not a part of that group.

sudo vulnerability on Ubuntu 9.10 , Ubuntu 10.04 LTS