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.

An attacker could have sent a message to the parent process where the ...

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.

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.

Уязвимость механизма индексирования JavaScript-объектов браузеров Mozilla Firefox, Mozilla Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю выполнить произвольный JavaScript-код

Уязвимость метода Array браузеров Mozilla Firefox и Mozilla Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю выполнить произвольный JavaScript-код в привилегированном контексте