polkit could be tricked into giving out improper authorization.
It was discovered that polkit didn’t allow applications to use the pkcheck tool in a way which prevented a race condition in the UID lookup. A local attacker could use this flaw to possibly escalate privileges.
18 September 2013
A security issue affects these releases of Ubuntu and its derivatives:
polkit could be tricked into giving out improper authorization.
It was discovered that polkit didn’t allow applications to use the pkcheck tool in a way which prevented a race condition in the UID lookup. A local attacker could use this flaw to possibly escalate privileges.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
Vulmon