Red Hat Errata System 5.3 2011-03-22T12:48:53 Red Hat Enterprise Linux 4 Red Hat Enterprise Linux 5 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-2009-0352, CVE-2009-0353, CVE-2009-0772, CVE-2009-0774, CVE-2009-0775) Several flaws were found in the way malformed content was processed. An HTML mail message containing specially-crafted content could potentially trick a Thunderbird user into surrendering sensitive information. (CVE-2009-0355, CVE-2009-0776) Note: JavaScript support is disabled by default in Thunderbird. None of the above issues are exploitable unless JavaScript is enabled. All Thunderbird users should upgrade to this updated package, which resolves these issues. All running instances of Thunderbird must be restarted for the update to take effect. Moderate Copyright 2009 Red Hat, Inc. CVE-2009-0352 CVE-2009-0353 CVE-2009-0355 CVE-2009-0772 CVE-2009-0774 CVE-2009-0775 CVE-2009-0776 CVE-2009-0352 Firefox layout crashes with evidence of memory corruption CVE-2009-0353 Firefox javascript crashes with evidence of memory corruption CVE-2009-0355 Firefox local file stealing with SessionStore CVE-2009-0772 Firefox 2 and 3 - Layout engine crashes CVE-2009-0774 Firefox 2 and 3 crashes in the JavaScript engine CVE-2009-0775 Firefox XUL Linked Clones Double Free Vulnerability CVE-2009-0776 Firefox XML data theft via RDFXMLDataSource and cross-domain redirect cpe:/a:redhat:rhel_productivity cpe:/o:redhat:enterprise_linux