Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
{ "binaries": [ { "binary_version": "74.0.1+build1-0ubuntu0.16.04.1", "binary_name": "firefox" }, { "binary_version": "74.0.1+build1-0ubuntu0.16.04.1", "binary_name": "firefox-dev" }, { "binary_version": "74.0.1+build1-0ubuntu0.16.04.1", "binary_name": "firefox-geckodriver" }, { "binary_version": "74.0.1+build1-0ubuntu0.16.04.1", "binary_name": "firefox-mozsymbols" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2", "binary_name": "thunderbird" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2", "binary_name": "thunderbird-dev" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2", "binary_name": "thunderbird-gnome-support" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2", "binary_name": "thunderbird-mozsymbols" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2", "binary_name": "xul-ext-calendar-timezones" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2", "binary_name": "xul-ext-gdata-provider" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2", "binary_name": "xul-ext-lightning" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "74.0.1+build1-0ubuntu0.18.04.1", "binary_name": "firefox" }, { "binary_version": "74.0.1+build1-0ubuntu0.18.04.1", "binary_name": "firefox-dev" }, { "binary_version": "74.0.1+build1-0ubuntu0.18.04.1", "binary_name": "firefox-geckodriver" }, { "binary_version": "74.0.1+build1-0ubuntu0.18.04.1", "binary_name": "firefox-mozsymbols" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-dev" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-gnome-support" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-mozsymbols" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-calendar-timezones" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-gdata-provider" }, { "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-lightning" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "75.0+build3-0ubuntu1", "binary_name": "firefox" }, { "binary_version": "75.0+build3-0ubuntu1", "binary_name": "firefox-dev" }, { "binary_version": "75.0+build3-0ubuntu1", "binary_name": "firefox-geckodriver" }, { "binary_version": "75.0+build3-0ubuntu1", "binary_name": "firefox-mozsymbols" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "1:68.7.0+build1-0ubuntu1", "binary_name": "thunderbird" }, { "binary_version": "1:68.7.0+build1-0ubuntu1", "binary_name": "thunderbird-dev" }, { "binary_version": "1:68.7.0+build1-0ubuntu1", "binary_name": "thunderbird-gnome-support" }, { "binary_version": "1:68.7.0+build1-0ubuntu1", "binary_name": "thunderbird-mozsymbols" }, { "binary_version": "1:68.7.0+build1-0ubuntu1", "binary_name": "xul-ext-calendar-timezones" }, { "binary_version": "1:68.7.0+build1-0ubuntu1", "binary_name": "xul-ext-gdata-provider" }, { "binary_version": "1:68.7.0+build1-0ubuntu1", "binary_name": "xul-ext-lightning" } ], "availability": "No subscription required" }