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USN-1352-1: Software Properties vulnerability

31 January 2012

Software Properties could be tricked into installing arbitrary PPA 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

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

Ubuntu 11.10
Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

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