A potentially exploitable use-after-free crash during actor destruction with service workers. This issue does not affect releases earlier than Firefox 49. This vulnerability affects Firefox < 49.0.2.
Cierre inesperado por uso de memoria previamente liberada potencialmente explotable durante la destrucción de actores con trabajadores de servicio. Este problema no afecta a versiones anteriores a Firefox 49. La vulnerabilidad afecta a Firefox en versiones anteriores a la 49.0.2.
A use-after-free was discovered in service workers. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via program crash, or execute arbitrary code. It was discovered that web content could access information in the HTTP cache in some circumstances. An attacker could potentially exploit this to obtain sensitive information. Various other issues were also addressed.
