CVE-2024-4769

Al importar recursos utilizando Web Workers, los mensajes de error distinguirían la diferencia entre respuestas `aplicación/javascript` y respuestas sin script. Se podría haber abusado de esto para aprender información de origen cruzado. Esta vulnerabilidad afecta a Firefox < 126, Firefox ESR < 115.11 y Thunderbird < 115.11.

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as follows: When importing resources using Web Workers, error messages would distinguish the difference between `application/javascript` responses and non-script responses. This could have been abused to learn information cross-origin.

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. Thomas Rinsma discovered that Thunderbird did not properly handle type check when handling fonts in PDF.js. An attacker could potentially exploit this issue to execute arbitrary javascript code in PDF.js.