USN-1352-1: Software Properties vulnerability

Publication date

31 January 2012

Overview

Software Properties could be tricked into installing arbitrary PPA GPG keys.


Packages

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
machine-in-the-middle attack, this flaw could be exploited to install altered
package repository GPG keys.

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
machine-in-the-middle attack, this flaw could be exploited to install altered
package repository GPG keys.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
11.10 oneiric python-software-properties –  0.81.13.3
11.04 natty python-software-properties –  0.80.9.1
10.10 maverick python-software-properties –  0.76.7.1
10.04 lucid python-software-properties –  0.75.10.2

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


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