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USN-1385-1: APT vulnerability

6 March 2012

An attacker could trick APT into installing altered packages.



  • apt - Advanced front-end for dpkg


Simon Ruderich discovered that APT incorrectly handled repositories that
use InRelease files. The default Ubuntu repositories do not use InRelease
files, so this issue only affected third-party repositories. If a remote
attacker were able to perform a machine-in-the-middle attack, this flaw could
potentially be used to install altered packages.

Update instructions

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

Ubuntu 11.10
Ubuntu 11.04

In general, a standard system update will make all the necessary changes.