Ubuntu Update for apt-xapian-index USN-1955-1

Solution
Please Install the Updated Packages.
Insight
It was discovered that apt-xapian-index was using polkit in an unsafe manner. A local attacker could possibly use this issue to bypass intended polkit authorizations.
Affected
apt-xapian-index on Ubuntu 13.04 , Ubuntu 12.10 , Ubuntu 12.04 LTS
References