CVE-2013-1720

La función nsHtml5TreeBuilder::resetTheInsertionMode en el HTML5 Tree Builder de Mozilla Firefox (anteriores a 24.0), Thunderbird (anteriores a 24.0) y SeaMonkey (anteriores a 2.21) no mantiene apropiadamente el estado de pila del modo de inserción para elementos de plantilla, lo que permite a un atacante remoto ejecutar código arbitrario o causar una denegación de servicio (sobrelectura de buffer en memoria dinámica) desencadenando el uso de esta pila en su estado vacío.

Multiple memory safety issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted message with scripting enabled, an attacker could possibly exploit these to cause a denial of service via application crash, or potentially execute arbitrary code with the privileges of the user invoking Thunderbird. Atte Kettunen discovered a flaw in the HTML5 Tree Builder when interacting with template elements. If a user had scripting enabled, in some circumstances an attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking Thunderbird. Various other issues were also addressed.