CVE-2011-0073

Mozilla Firefox anterior a v3.5.19 y v3.6.x anterior a v3.6.17, y SeaMonkey anterior a v2.0.14, no utiliza correctamente las estructuras de datos nsTreeRange, permitiendo a atacantes remotos ejecutar código arbitrario a través de vectores no especificados produciendo un "dangling pointer".

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 or open a malicious file.
The specific flaw exists within the way Firefox handles user defined functions of a nsTreeSelection element. When executing the function invalidateSelection it is possible to free the nsTreeSelection object that the function operates on. Any further operations on the freed object can result in remote code execution.

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.