=========================================================== Ubuntu Security Notice USN-431-1 March 07, 2007 mozilla-thunderbird vulnerabilities CVE-2007-0008, CVE-2007-0009, CVE-2007-0775, CVE-2007-0776, CVE-2007-0777 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.10 Ubuntu 6.06 LTS Ubuntu 6.10 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 5.10: mozilla-thunderbird 1.5.0.10-0ubuntu0.5.10 Ubuntu 6.06 LTS: mozilla-thunderbird 1.5.0.10-0ubuntu0.6.06 Ubuntu 6.10: mozilla-thunderbird 1.5.0.10-0ubuntu0.6.10 After a standard system upgrade you need to restart Thunderbird to effect the necessary changes. Details follow: The SSLv2 protocol support in the NSS library did not sufficiently check the validity of public keys presented with a SSL certificate. A malicious SSL web site using SSLv2 could potentially exploit this to execute arbitrary code with the user's privileges. (CVE-2007-0008) The SSLv2 protocol support in the NSS library did not sufficiently verify the validity of client master keys presented in an SSL client certificate. A remote attacker could exploit this to execute arbitrary code in a server application that uses the NSS library. (CVE-2007-0009) Various flaws have been reported that could allow an attacker to execute arbitrary code with user privileges by tricking the user into opening a malicious web page. (CVE-2007-0775, CVE-2007-0776, CVE-2007-0777)