jetlib.sec » Tags » manager.-one

Ubuntu Security Notice 1284-2 - USN-1284-1 fixed vulnerabilities in Update Manager. One of the fixes introduced a regression for Kubuntu users attempting to upgrade to a newer Ubuntu release. This update fixes the problem. David Black discovered that Update Manager incorrectly extracted the downloaded upgrade tarball before verifying its GPG signature. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to replace arbitrary files. David Black discovered that Update Manager created a temporary directory in an insecure fashion. A local attacker could possibly use this flaw to read the XAUTHORITY file of the user performing the upgrade. This update also adds a hotfix to Update Notifier to handle cases where the upgrade is being performed from CD media. Various other issues were also addressed.

Tags:  ubuntu update upgrade david-black manager.-one gpg-signature man-in-the-middle-attack cd-media