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Ubuntu 16.10 USN-3156-2: Moderate Apt Regression Impacting Upgrades

ubuntu
Calendar Grey December 17, 2016
Scroller Ubuntu
A vulnerability in Ubuntu's package manager brought about a problem that necessitated manual steps to resolve the unattended-upgrades issue.
USN-3156-1 introduced a regression in unattended-upgrades that may requiremanual intervention to repair.

Summary

USN-3156-1 introduced a regression in unattended-upgrades that may require

manual intervention to repair.

Software Description:

- apt: Advanced front-end for dpkg

Details:

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.

Topics%20covered

Topics Covered

security advisory moderate Ubuntu software issue regression apt unattended upgrades

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.10:
  apt                             1.3.3

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

References

https://ubuntu.com/security/notices/USN-3156-2

https://ubuntu.com/security/notices/USN-3156-1

https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1649959

December 17, 2016

Topics%20covered

Topics Covered

security advisory moderate Ubuntu software issue regression apt unattended upgrades

Package Information

https://launchpad.net/ubuntu/+source/apt/1.3.3

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