CVE-2018-12386

Una vulnerabilidad en la asignación de registros en JavaScript puede conducir a una confusión de tipos que permite la lectura y escritura arbitrarias. Esto conduce a la ejecución remota de código en el proceso de contenido en sandbox cuando se desencadena. La vulnerabilidad afecta a Firefox ESR en versiones anteriores a la 60.2.2 y Firefox en versiones anteriores a la 62.0.3.

A crash was discovered in TransportSecurityInfo used for SSL, which could be triggered by data stored in the local cache directory. An attacker could potentially exploit this in combination with another vulnerability that allowed them to write data to the cache, to execute arbitrary code. A type confusion bug was discovered in JavaScript. If a user were tricked in to opening a specially crafted website, an attacker could exploit this to cause a denial of service, or execute arbitrary code. Various other issues were also addressed.