ubiquity-slideshow-ubuntu would allow unintended access to files over the network during system installation.
Paul Mutton discovered that ubiquity-slideshow-ubuntu incorrectly handled the Twitter feed displayed during system installation. A remote attacker could use this flaw to inject code into the Twitter feed and read arbitrary files off the filesystem during system installation. This flaw has been resolved in the Ubuntu 12.04.1 LTS installation images by disabling the Twitter feed.
10 September 2012
A security issue affects these releases of Ubuntu and its derivatives:
ubiquity-slideshow-ubuntu would allow unintended access to files over the network during system installation.
Paul Mutton discovered that ubiquity-slideshow-ubuntu incorrectly handled the Twitter feed displayed during system installation. A remote attacker could use this flaw to inject code into the Twitter feed and read arbitrary files off the filesystem during system installation. This flaw has been resolved in the Ubuntu 12.04.1 LTS installation images by disabling the Twitter feed.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
Use of the Ubuntu 12.04.1 LTS installation images is required to resolve this issue.
Vulmon