CVE-2024-1549

Si un sitio web configura un cursor personalizado grande, partes del cursor podrían haberse superpuesto con el cuadro de diálogo de permisos, lo que podría generar confusión en el usuario y permisos concedidos inesperados. Esta vulnerabilidad afecta a Firefox < 123, Firefox ESR < 115.8 y Thunderbird < 115.8.

The Mozilla Foundation Security Advisory describes this flaw as: If a website set a large custom cursor, portions of the cursor could have overlapped with the permission dialog, potentially resulting in user confusion and unexpected granted permissions.

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. Alfred Peters discovered that Firefox did not properly manage memory when storing and re-accessing data on a networking channel. An attacker could potentially exploit this issue to cause a denial of service.