A compromised content process could send a message to the parent process that would cause the 'Click to Play' permission prompt to be shown. However, due to lack of validation from the parent process, if the user accepted the permission request an attacker-controlled permission would be granted rather than the 'Click to Play' permission. This vulnerability affects Firefox < 70.
Un proceso de contenido comprometido podría enviar un mensaje al proceso principal que causaría que la petición del permiso "Click to Play" sea mostrada . Sin embargo, debido a la falta de comprobación del proceso principal, si el usuario acepta la petición de permiso, un permiso controlado por el atacante sería otorgado en lugar del permiso "Click to Play". Esta vulnerabilidad afecta a Firefox versiones anteriores a la versión 70.
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, bypass security restrictions, bypass same-origin restrictions, conduct cross-site scripting attacks, bypass content security policy protections, or execute arbitrary code.
