CVE-2019-11725

Cuando un usuario navega hacia un sitio marcado como no seguro por la API Safebrowsing, se muestran mensajes de advertencia y se interrumpe la navegación, pero los recursos del mismo sitio cargados por medio de websockets no se bloquean, lo que conlleva a la carga de recursos no seguros y evita las protecciones de seguridad. Esta vulnerabilidad afecta a Firefox anterior a versión 68.

A sandbox escape was discovered in Firefox. If a user were tricked in to installing a malicious language pack, an attacker could exploit this to gain additional privileges. Multiple security issues were discovered 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, obtain sensitive information, bypass same origin restrictions, conduct cross-site scripting attacks, conduct cross-site request forgery attacks, spoof origin attributes, spoof the addressbar contents, bypass safebrowsing protections, or execute arbitrary code. Various other issues were also addressed.