Ubuntu Security Notice USN-1666-1
17th December, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
Aptdaemon could be tricked into installing arbitrary PPA GPG keys.
- aptdaemon - transaction based package management service
It was discovered that Aptdaemon incorrectly validated PPA GPG keys when
importing from a keyserver. 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.
The problem can be corrected by updating your system to the following package version:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.