USN-1038-1: dpkg vulnerability
6 January 2011
A malicious source package could write files outside the unpack directory.
Releases
Packages
- dpkg - Debian package management system
Details
Jakub Wilk and Raphael Hertzog discovered that dpkg-source did not
correctly handle certain paths and symlinks when unpacking source-format
version 3.0 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 9.10
Ubuntu 10.10
Ubuntu 10.04
In general, a standard system update will make all the necessary changes.