USN-1367-3: Thunderbird vulnerability

17 February 2012

thunderbird vulnerability

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

  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS

Summary

Thunderbird could be made to crash or run programs as your login if it opened a specially crafted file.

Software Description

  • thunderbird - Mozilla Open Source mail and newsgroup client

Details

USN-1367-1 fixed vulnerabilities in libpng. This provides the corresponding update for Thunderbird.

Original advisory details:

Jueri Aedla discovered that libpng did not properly verify the size used when allocating memory during chunk decompression. If a user or automated system using libpng were tricked into opening a specially crafted image, an attacker could exploit this to cause a denial of service or execute code with the privileges of the user invoking the program. (CVE-2011-3026)

Update instructions

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

Ubuntu 11.04
thunderbird - 3.1.19+build1+nobinonly-0ubuntu0.11.04.1
Ubuntu 10.10
thunderbird - 3.1.19+build1+nobinonly-0ubuntu0.10.10.1
Ubuntu 10.04 LTS
thunderbird - 3.1.19+build1+nobinonly-0ubuntu0.10.04.1

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

After a standard system update you need to restart Thunderbird to make all the necessary changes.

References