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=========================================================== Ubuntu Security Notice USN-469-1 June 05, 2007 mozilla-thunderbird vulnerabilities CVE-2007-1558, CVE-2007-2867, CVE-2007-2868 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 6.10 Ubuntu 7.04 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: mozilla-thunderbird 1.5.0.12-0ubuntu0.6.06 Ubuntu 6.10: mozilla-thunderbird 1.5.0.12-0ubuntu0.6.10 Ubuntu 7.04: mozilla-thunderbird 1.5.0.12-0ubuntu0.7.04 After a standard system upgrade you need to restart Thunderbird to effect the necessary changes. Details follow: 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)