CVE-2022-29916

Firefox se comportó de manera ligeramente diferente para recursos ya conocidos al cargar recursos CSS que involucraban variables CSS. Esto podría haberse utilizado para sondear el historial del navegador. Esta vulnerabilidad afecta a Thunderbird < 91.9, Firefox ESR < 91.9 y Firefox < 100.

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue of Firefox behaving slightly differently for already known resources when loading CSS resources involving CSS variables. This flaw could probe the browser history.

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, bypass permission prompts, obtain sensitive information, bypass security restrictions, cause user confusion, or execute arbitrary code. It was discovered that Thunderbird would show the wrong security status after viewing an attached message that is signed or encrypted. An attacker could potentially exploit this by tricking the user into trusting the authenticity of a message.