The remote Red Hat host is missing a security update.
Updated thunderbird packages that fix several security issues are now available for Red Hat Enterprise Linux 4 and 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. Mozilla Thunderbird is a standalone mail and newsgroup client. Several flaws were found in the processing of malformed HTML mail content. An HTML mail message containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code as the user running Thunderbird. (CVE-2008-5014, CVE-2008-5016, CVE-2008-5017, CVE-2008-5018, CVE-2008-5021) Several flaws were found in the way malformed HTML mail content was processed. An HTML mail message containing specially crafted content could potentially trick a Thunderbird user into surrendering sensitive information. (CVE-2008-5012, CVE-2008-5022, CVE-2008-5024) All Thunderbird users should upgrade to these updated packages, which resolve these issues.