USN-1352-1: Software Properties vulnerability
31 January 2012
software-properties vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Summary
Software Properties could be tricked into installing arbitrary PPA GPG keys.
Software Description
- software-properties - manage the repositories that you install software from
Details
David Black discovered that Software Properties incorrectly validated server certificates when performing secure connections to download PPA GPG key fingerprints. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to install altered package repository GPG keys.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 11.10
- python-software-properties - 0.81.13.3
- Ubuntu 11.04
- python-software-properties - 0.80.9.1
- Ubuntu 10.10
- python-software-properties - 0.76.7.1
- Ubuntu 10.04 LTS
- python-software-properties - 0.75.10.2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.