Ubuntu Security Notice USN-1367-3
17th February, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Thunderbird could be made to crash or run programs as your login if it opened a specially crafted file.
- thunderbird - Mozilla Open Source mail and newsgroup client
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)
The problem can be corrected by updating your system to the following package version:
- 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.