CVE-2018-12363

Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada cuando script emplea eventos de mutación para mover nodos DOM entre documentos, lo que resulta en el que documento antiguo que sostenía el nodo se liberase, pero dicho nodo seguía teniendo un puntero referenciándolo. Esto resulta en un cierre inesperado potencialmente explotable. La vulnerabilidad afecta a Thunderbird en versiones anteriores a la 60 y la 52.9, Firefox ESR en versiones anteriores a la 60.1 y la 52.9 y Firefox en versiones anteriores a la 61.

Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass CORS restrictions, obtain sensitive information, or execute arbitrary code. It was discovered that S/MIME and PGP decryption oracles can be built with HTML emails. An attacker could potentially exploit this to obtain sensitive information. Various other issues were also addressed.