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USN-1367-3: Thunderbird vulnerability

17 February 2012

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)

Update instructions

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

Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

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

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