CVE-2024-2608

`AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` y `AppendEncodedCharacters()` podrían haber experimentado desbordamientos de enteros, lo que provocó una asignación insuficiente de un búfer de salida, lo que provocó una escritura fuera de los límites. Esta vulnerabilidad afecta a Firefox < 124, Firefox ESR < 115.9 y Thunderbird < 115.9.

The Mozilla Foundation Security Advisory describes this flaw as: `AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` and `AppendEncodedCharacters()` could have experienced integer overflows, causing underallocation of an output buffer leading to an out of bounds write.

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. Hubert Kario discovered that Thunderbird had a timing side-channel when performing RSA decryption. A remote attacker could possibly use this issue to recover sensitive information.