Red Hat Errata System 5.3 2011-06-30T17:09:37 Red Hat Enterprise Linux 6 Mozilla Thunderbird is a standalone mail and newsgroup client. A flaw was found in the way Thunderbird handled malformed JPEG images. An HTML mail message containing a malicious JPEG image could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2011-2377) Multiple dangling pointer flaws were found in Thunderbird. Malicious HTML content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2011-0083, CVE-2011-0085, CVE-2011-2363) Several flaws were found in the processing of malformed HTML content. Malicious HTML content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2011-2364, CVE-2011-2365, CVE-2011-2374, CVE-2011-2375, CVE-2011-2376) It was found that Thunderbird could treat two separate cookies (for web content) as interchangeable if both were for the same domain name but one of those domain names had a trailing "." character. This violates the same-origin policy and could possibly lead to data being leaked to the wrong domain. (CVE-2011-2362) 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. Critical Copyright 2011 Red Hat, Inc. CVE-2011-0083 CVE-2011-0085 CVE-2011-2362 CVE-2011-2363 CVE-2011-2364 CVE-2011-2365 CVE-2011-2374 CVE-2011-2375 CVE-2011-2376 CVE-2011-2377 CVE-2011-2605 CVE-2011-2364 CVE-2011-2365 CVE-2011-2374 CVE-2011-2375 CVE-2011-2376 CVE-2011-2605 Mozilla Miscellaneous memory safety hazards (MFSA 2011-19) CVE-2011-0083 CVE-2011-0085 CVE-2011-2363 Mozilla Multiple dangling pointer vulnerabilities (MFSA 2011-23) CVE-2011-2362 Mozilla Cookie isolation error (MFSA 2011-24) CVE-2011-2377 Mozilla Crash caused by corrupted JPEG image (MFSA 2011-21) cpe:/o:redhat:enterprise_linux