USN-469-1: Thunderbird vulnerabilities

6 June 2007

mozilla-thunderbird vulnerabilities

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

  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description


Gaëtan Leurent showed a weakness in APOP authentication. An attacker posing as a trusted server could recover portions of the user’s password via multiple authentication attempts. (CVE-2007-1558)

Various flaws were discovered in the layout and JavaScript engines. By tricking a user into opening a malicious email, an attacker could execute arbitrary code with the user’s privileges. Please note that JavaScript is disabled by default for emails, and it is not recommended to enable it. (CVE-2007-2867, CVE-2007-2868)

Update instructions

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

Ubuntu 7.04
mozilla-thunderbird -
Ubuntu 6.10
mozilla-thunderbird -
Ubuntu 6.06 LTS
mozilla-thunderbird -

To update your system, please follow these instructions:

After a standard system upgrade you need to restart Thunderbird to effect the necessary changes.