USN-2566-1: dpkg vulnerability

9 April 2015

dpkg vulnerability

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

  • Ubuntu 14.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS

Summary

dpkg could be tricked into bypassing source package signature checks.

Software Description

  • dpkg - Debian package management system

Details

Jann Horn discovered that dpkg incorrectly validated signatures when extracting local source packages. If a user or an automated system were tricked into unpacking a specially crafted source package, a remote attacker could bypass signature verification checks.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.10
libdpkg-perl - 1.17.13ubuntu1.1
Ubuntu 14.04 LTS
libdpkg-perl - 1.17.5ubuntu5.4
Ubuntu 12.04 LTS
libdpkg-perl - 1.16.1.2ubuntu7.6
Ubuntu 10.04 LTS
dpkg-dev - 1.15.5.6ubuntu4.10

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.

References