Mozilla Firefox — свободный браузер на движке Gecko

An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Mozilla developers and community members reported memory safety bugs present in Firefox 69 and Firefox ESR 68.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.2, and Firefox ESR < 68.2.

When following the value's prototype chain, it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Уязвимость политики безопасности веб-браузера Firefox, связанная с недостатком механизма проверки вводимых данных, позволяющая нарушителю оказать воздействие на целостность данных

Уязвимость механизма наследования политики безопасности веб-браузера Firefox, позволяющая нарушителю получить несанкционированный доступ к конфиденциальным данным и оказать воздействие на целостность данных

Уязвимость политики безопасности веб-браузера Firefox, позволяющая нарушителю получить несанкционированный доступ к конфиденциальным данным и оказать воздействие на целостность данных

Уязвимость запроса Click to Play веб-браузера Firefox, позволяющая нарушителю оказать воздействие на целостность данных

JetBrains YouTrack versions before 2019.2.53938 had a possible XSS through issue attachments when using the Firefox browser.

When the pointer lock is enabled by a website though requestPointerLock(), no user notification is given. This could allow a malicious website to hijack the mouse pointer and confuse users. This vulnerability affects Firefox < 69.0.1.