Ubuntu Security Notice USN-2183-2
1st May, 2014
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
A malicious source package could write files outside the unpack directory.
- dpkg - Debian package management system
USN-2183-1 fixed a vulnerability in dpkg. Javier Serrano Polo discovered
that the fix introduced a vulnerability in releases with an older version
of the patch utility. This update fixes the problem.
Original advisory details:
Jakub Wilk discovered that dpkg incorrectly certain paths and symlinks when
unpacking source packages. If a user or an automated system were tricked
into unpacking a specially crafted source package, a remote attacker could
modify files outside the target unpack directory, leading to a denial of
service or potentially gaining access to the system.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 14.04 LTS:
- libdpkg-perl 1.17.5ubuntu5.2
- Ubuntu 13.10:
- libdpkg-perl 1.16.12ubuntu1.2
- Ubuntu 12.10:
- libdpkg-perl 1.16.7ubuntu6.2
- Ubuntu 12.04 LTS:
- libdpkg-perl 220.127.116.11ubuntu7.4
- Ubuntu 10.04 LTS:
- dpkg-dev 18.104.22.168ubuntu4.8
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.