CVE-2011-0065

Vulnerabilidad de uso después de la liberación (Use-after-free) en Mozilla Firefox anterior a v3.5.19 y v3.6.x anterior a v3.6.17, y SeaMonkey anterior a v2.0.14, permite a atacantes remotos ejecutar código arbitrario mediante OBJECT's mChannel.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.
The specific flaw exists within the OnChannelRedirect method. When an OBJECT element has no mChannel assigned, it is possible to call the |OnChannelRedirect| method, setting a nearly arbitrary object as the channel in use. |mChannel| will become a dangling pointer, allowing an attacker to execute arbitrary code under the context of the user running the browser.

USN-1122-1 fixed vulnerabilities in Thunderbird for Lucid and Maverick. This update provides the corresponding fixes for Natty. It was discovered that there was a vulnerability in the memory handling of certain types of content. An attacker could exploit this to possibly run arbitrary code as the user running Thunderbird. It was discovered that Thunderbird incorrectly handled certain JavaScript requests. If JavaScript were enabled, an attacker could exploit this to possibly run arbitrary code as the user running Thunderbird. Ian Beer discovered a vulnerability in the memory handling of a certain types of documents. An attacker could exploit this to possibly run arbitrary code as the user running Thunderbird. Multiple other vulnerabilities were also addressed.