CVE-2023-5171

Durante la compilación de Ion, una Recolección de Basura podría haber resultado en una condición de use-after-free, lo que permitiría a un atacante escribir dos bytes NUL y provocar un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox < 118, Firefox ESR < 115.3 y Thunderbird < 115.3.

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as: During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NULL bytes and cause 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, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute arbitrary code. Andrew McCreight discovered that Thunderbird did not properly manage during the worker lifecycle. An attacker could potentially exploit this issue to cause a denial of service.