CVE-2015-0803

La función HTMLSourceElement::AfterSetAttr en Mozilla Firefox anterior a 37.0 no limita correctamente el tipo de datos originales de un valor asignado durante la configuración de los atributos de un elemento SOURCE, lo que permite a atacantes remotos ejecutar código arbitrario o causar una denegación de servicio (uso después de liberación) a través de un documento HTML manipulado.

Olli Pettay and Boris Zbarsky discovered an issue during anchor navigations in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass same-origin policy restrictions. Bobby Holley discovered that windows created to hold privileged UI content retained access to privileged internal methods if navigated to unprivileged content. An attacker could potentially exploit this in combination with another flaw, in order to execute arbitrary script in a privileged context. Various other issues were also addressed.