USN-1020-1: Thunderbird vulnerabilities

9 December 2010

thunderbird, thunderbird-locales vulnerabilities

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

  • 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.

Software Description

  • thunderbird - mail/news client with RSS and integrated spam filter support
  • thunderbird-locales - Thunderbird Afrikaans language/region package


Jesse Ruderman, Andreas Gal, Nils, Brian Hackett, and Igor Bukanov discovered several memory issues in the browser engine. An attacker could exploit these to crash THunderbird or possibly run arbitrary code as the user invoking the program. (CVE-2010-3776, CVE-2010-3777, CVE-2010-3778)

Marc Schoenefeld and Christoph Diehl discovered several problems when handling downloadable fonts. The new OTS font sanitizing library was added to mitigate these issues. (CVE-2010-3768)

Update instructions

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

Ubuntu 10.10
thunderbird - 3.1.7+build3+nobinonly-0ubuntu0.10.10.1
Ubuntu 10.04 LTS
thunderbird - 3.1.7+build3+nobinonly-0ubuntu0.10.04.1

To update your system, please follow these instructions:

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