CVE-2015-0802

Mozilla Firefox anterior a 37.0 depende de información del tipo docshell en lugar de información de la página principal para el control de acceso a Window.webidl, lo que podría permitir a atacantes remotos ejecutar código JavaScript arbitrario con privilegios chrome a través de cierta navegación de contenidos que aprovecha la posibilidad de alcanzar una ventana privilegiada con una persistencia de acceso no intencionada para restringir los métodos internos.

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.