Ubuntu Update for apt USN-2353-1

Please Install the Updated Packages.
It was discovered that APT incorrectly handled certain http URLs. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to cause APT to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-6273) In addition, this update fixes regressions introduced by the USN-2348-1 security update: APT incorrectly handled 'file:///' sources on a different partition, incorrectly handled Dir::state::lists set to a relative path, and incorrectly handled cdrom: sources.
apt on Ubuntu 14.04 LTS , Ubuntu 12.04 LTS , Ubuntu 10.04 LTS