=========================================================================Ubuntu Security Notice USN-2183-2
May 01, 2014
dpkg vulnerability
=========================================================================
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
Summary:
A malicious source package could write files outside the unpack directory.
Software Description:
- dpkg: Debian package management system
Details:
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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
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 1.16.1.2ubuntu7.4
Ubuntu 10.04 LTS:
dpkg-dev 1.15.5.6ubuntu4.8
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-2183-2
https://ubuntu.com/security/notices/USN-2183-1
CVE-2014-0471
Package Information:
https://launchpad.net/ubuntu/+source/dpkg/1.17.5ubuntu5.2
https://launchpad.net/ubuntu/+source/dpkg/1.16.12ubuntu1.2
https://launchpad.net/ubuntu/+source/dpkg/1.16.7ubuntu6.2
https://launchpad.net/ubuntu/+source/dpkg/1.16.1.2ubuntu7.4
https://launchpad.net/ubuntu/+source/dpkg/1.15.5.6ubuntu4.8
