CVE-2016-9064

Las actualizaciones de add-ons no verifican si el ID de add-on en el paquete firmado coincide con el ID del add-on que se está ejecutando. Un atacante que pueda realizar un ataque Man-in-the-Middle (MitM) en la conexión del usuario al servidor de actualización y superar la protección de asignación de certificados podría proporcionar un add-on maliciosamente firmado en lugar de una actualización válida. La vulnerabilidad afecta a Firefox ESR en versiones anteriores a la 45.5 y Firefox en versiones anteriores a la 50.

A flaw was found in the way Add-on update process was handled by Firefox. A Man-in-the-Middle attacker could use this flaw to install a malicious signed add-on update.

Christian Holler, Andrew McCreight, Dan Minor, Tyson Smith, Jon Coppeard, Jan-Ivar Bruaroey, Jesse Ruderman, Markus Stange, Olli Pettay, Ehsan Akhgari, Gary Kwong, Tooru Fujisawa, and Randell Jesup 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. A same-origin policy bypass was discovered with local HTML files in some circumstances. An attacker could potentially exploit this to obtain sensitive information. Various other issues were also addressed.