Ubuntu Security Notice USN-1955-1
18th September, 2013
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
apt-xapian-index could be tricked into bypassing polkit authorizations.
- apt-xapian-index - maintenance and search tools for a Xapian index of Debian package
It was discovered that apt-xapian-index was using polkit in an unsafe
manner. A local attacker could possibly use this issue to bypass intended
The problem can be corrected by updating your system to the following package version:
- Ubuntu 13.04:
- apt-xapian-index 0.45ubuntu2.1
- Ubuntu 12.10:
- apt-xapian-index 0.44ubuntu7.1
- Ubuntu 12.04 LTS:
- apt-xapian-index 0.44ubuntu5.1
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.