The remote host is missing an update to mozilla-thunderbird announced via advisory MDVSA-2009:012.
To upgrade automatically use MandrakeUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. https://secure1.securityspace.com/smysecure/catid.html?in=MDVSA-2009:012 http://www.mozilla.org/security/known-vulnerabilities/thunderbird20.html
A number of security vulnerabilities have been discovered and corrected in the latest Mozilla Thunderbird program, version 126.96.36.199 (CVE-2008-5500, CVE-2008-5503, CVE-2008-5506, CVE-2008-5507, CVE-2008-5508, CVE-2008-5510, CVE-2008-5511, CVE-2008-5512). This update provides the latest Thunderbird to correct these issues. Affected: 2008.1, 2009.0, Corporate 3.0
CVE CVE-2008-5500, CVE-2008-5503, CVE-2008-5506, CVE-2008-5507, CVE-2008-5508, CVE-2008-5510, CVE-2008-5511, CVE-2008-5512
CVSS Base Score: 10.0