A logic flaw in our location bar implementation could have allowed a local attacker to spoof the current location by selecting a different origin and removing focus from the input element. This vulnerability affects Firefox < 76.
Un fallo lógico en nuestra implementación de la barra de ubicación podría haber permitido a un atacante local falsificar la ubicación actual al seleccionar un origen diferente y eliminar el foco del elemento de entrada. Esta vulnerabilidad afecta a Firefox versiones anteriores a 76.
USN-4353-1 fixed vulnerabilities in Firefox. The update caused a regression that impaired the functionality of some addons. This update fixes the problem. 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, spoof the URL bar, or execute arbitrary code.