USN-3156-2: APT regression
17 December 2016
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.10
USN-3156-1 introduced a regression in unattended-upgrades that may require manual intervention to repair.
- apt - Advanced front-end for dpkg
USN-3156-1 fixed vulnerabilities in APT. It also caused a bug in unattended-upgrades on that may require manual intervention to repair.
Users on Ubuntu 16.10 should run the following commands at a terminal:
sudo dpkg –configure –pending sudo apt-get -f install
This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Jann Horn discovered that APT incorrectly handled InRelease files. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages.
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.
After a standard system update you should run the following commands to make all the necessary changes: sudo dpkg –configure –pending sudo apt-get -f install