USN-909-1: dpkg vulnerability

11 March 2010

dpkg vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software Description

  • dpkg

Details

William Grant discovered that dpkg-source did not safely apply diffs 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 9.10
dpkg-dev - 1.15.4ubuntu2.1
Ubuntu 9.04
dpkg-dev - 1.14.24ubuntu1.1
Ubuntu 8.10
dpkg-dev - 1.14.20ubuntu6.3
Ubuntu 8.04 LTS
dpkg-dev - 1.14.16.6ubuntu4.1
Ubuntu 6.06 LTS
dpkg-dev - 1.13.11ubuntu7.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system upgrade is sufficient to effect the necessary changes.

References