CVE-2022-28281

Si un proceso de contenido comprometido envió una cantidad inesperada de extensiones WebAuthN en un comando de registro al proceso principal, se habría producido una escritura fuera de los límites que provocaría daños en la memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird < 91.8, Firefox < 99 y Firefox ESR < 91.8.

The Mozilla Foundation Security Advisory describes this flaw as: If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent process, an out of bounds write would have occurred leading to memory corruption and a potentially exploitable crash.

Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, conduct spoofing attacks, or execute arbitrary code. It was discovered that Thunderbird ignored OpenPGP revocation when importing a revoked key in some circumstances. An attacker could potentially exploit this by tricking the user into trusting the authenticity of a message or tricking them into use a revoked key to send an encrypted message.