Уязвимость браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, связанная с ошибками отображения символа % в директориях %HOMEPATH% и %APPDATA%, позволяющая нарушителю вызвать отказ в обслуживании или выполнить произвольный код

Уязвимость реализации механизма CORS (Cross-Origin Resource Sharing) браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю обойти ограничения безопасности и получить несанкционированный доступ к защищаемой информации

Уязвимость реализации полноэкранного режима браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю проводить спуфинг-атаки

Уязвимость реализации механизма CORS (Cross-Origin Resource Sharing) браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю обойти ограничения безопасности

Уязвимость браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, связанная с ошибками при инициализации переменных, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость API для 3D-графики WebGL браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, связанная с копированием буфера без проверки размера входных данных, позволяющая нарушителю вызвать отказ в обслуживании или выполнить произвольный код

Уязвимость реализации технологии WASM браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю вызвать отказ в обслуживании

An attacker could have sent a message to the parent process where the contents were used to double-index into a JavaScript object, leading to prototype pollution and ultimately attacker-controlled JavaScript executing in the privileged parent process. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.

If an attacker was able to corrupt the methods of an Array object in JavaScript via prototype pollution, they could have achieved execution of attacker-controlled JavaScript code in a privileged context. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.

A malicious website could have learned the size of a cross-origin resource that supported Range requests. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

A malicious webpage could have caused an out-of-bounds write in WebGL, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

When exiting fullscreen mode, an iframe could have confused the browser about the current state of fullscreen, resulting in potential user confusion or spoofing attacks. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

When downloading files on Windows, the % character was not escaped, which could have lead to a download incorrectly being saved to attacker-influenced paths that used variables such as %HOMEPATH% or %APPDATA%.
*This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

On arm64, WASM code could have resulted in incorrect assembly generation leading to a register allocation problem, and a potentially exploitable crash. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

A crafted CMS message could have been processed incorrectly, leading to an invalid memory read, and potentially further memory corruption. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking in violation of WebAuthn goals. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

Mozilla developers Andrew McCreight, Nicolas B. Pierron, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 100 and Firefox ESR 91.9. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.