Уязвимость JIT-оптимизации браузера Firefox, связанная с доступом к данным без контроля типов, позволяющая нарушителю получить доступ к конфиденциальным данным, нарушить их целостность, а также вызвать отказ в обслуживании

Уязвимость памяти веб-браузеров Firefox, Firefox ESR и почтового клиента Thunderbird, связанная с выходом операции за допустимые границы буфера данных, позволяющая нарушителю получить доступ к конфиденциальным данным, нарушить их целостность, а также вызвать отказ в обслуживании

Уязвимость реализация WebRTC веб-браузеров Google Chrome, Firefox, Firefox-ESR и почтового клиента Thunderbird, связанная с переполнением буфера кучи, позволяющая нарушителю нарушить целостность данных

Уязвимость реализации механизма CORS почтового клиента Thunderbird, браузеров Firefox и Firefox ESR, позволяющая нарушителю получить несанкционированный доступ к защищаемой информации

Уязвимость браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, связанная с неправильными настройками прав доступа по умолчанию, позволяющая нарушителю обойти существующие ограничения безопасности

Уязвимость браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, связанная с выходом операции за границы буфера в памяти, позволяющая нарушителю выполнить произвольный код

Уязвимость браузеров Mozilla Firefox, Mozilla Firefox ESR и почтового клиента Thunderbird, связанная с утечкой информации в сообщениях об ошибках, позволяющая нарушителю раскрыть защищаемую информацию

Уязвимость библиотеки ANGLE браузера Mozilla Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю выполнить произвольный код или вызвать отказ в обслуживании

By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.

An iframe sandbox element with the allow-popups flag could be bypassed when using noopener links. This could have led to security issues for websites relying on sandbox configurations that allowed popups and hosted arbitrary content. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user is interacting with the user interface, when they are not. This could lead to a perceived broken state, especially when interactions with existing browser dialogs and warnings do not work. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

Firefox could be made to load attacker-supplied DLL files from the installation directory. This required an attacker that is already capable of placing files in the installation directory. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

The code for downloading files did not properly take care of special characters, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. 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 Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.

Mozilla developers reported memory safety bugs present in Firefox for Android 79. 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 Firefox < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.

Use after free in ANGLE in Google Chrome prior to 81.0.4044.122 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Inappropriate implementation in WebRTC in Google Chrome prior to 84.0.4147.89 allowed an attacker in a privileged network position to potentially exploit heap corruption via a crafted SCTP stream.

An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited. This vulnerability affects Thunderbird < 78.9 and Firefox ESR < 78.9.