CVE-2016-5274

Vulnerabilidad de uso de memoria previamente liberada en la función nsFrameManager::CaptureFrameState en Mozilla Firefox en versiones 45.x anteriores a la 49.0, Firefox ESR en versiones anteriores a la 45.4 y Thunderbird en versiones anteriores a la 45.4 permite que los atacantes remotos ejecuten código arbitrario utilizando la interacción errónea entre el restyling y la implementación del modelo Web Animations.

Atte Kettunen discovered an out-of-bounds read when handling certain Content Security Policy directives in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash. Christoph Diehl, Christian Holler, Gary Kwong, Nathan Froyd, Honza Bambas, Seth Fowler, Michael Smith, Andrew McCreight, Dan Minor, Byron Campen, Jon Coppeard, Steve Fink, Tyson Smith, and Carsten Book discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code. Various other issues were also addressed.