When navigating from inside an iframe while requesting fullscreen access, an attacker-controlled tab could have made the browser unable to leave fullscreen mode. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "96.0+build2-0ubuntu0.18.04.1" }, { "binary_name": "firefox-dev", "binary_version": "96.0+build2-0ubuntu0.18.04.1" }, { "binary_name": "firefox-geckodriver", "binary_version": "96.0+build2-0ubuntu0.18.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "96.0+build2-0ubuntu0.18.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "thunderbird", "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1" }, { "binary_name": "thunderbird-dev", "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1" }, { "binary_name": "thunderbird-gnome-support", "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1" }, { "binary_name": "thunderbird-mozsymbols", "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1" }, { "binary_name": "xul-ext-calendar-timezones", "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1" }, { "binary_name": "xul-ext-gdata-provider", "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1" }, { "binary_name": "xul-ext-lightning", "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "96.0+build2-0ubuntu0.20.04.1" }, { "binary_name": "firefox-dev", "binary_version": "96.0+build2-0ubuntu0.20.04.1" }, { "binary_name": "firefox-geckodriver", "binary_version": "96.0+build2-0ubuntu0.20.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "96.0+build2-0ubuntu0.20.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "thunderbird", "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "thunderbird-dev", "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "thunderbird-gnome-support", "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "thunderbird-mozsymbols", "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "xul-ext-calendar-timezones", "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "xul-ext-gdata-provider", "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "xul-ext-lightning", "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "96.0+build2-0ubuntu1" }, { "binary_name": "firefox-dev", "binary_version": "96.0+build2-0ubuntu1" }, { "binary_name": "firefox-geckodriver", "binary_version": "96.0+build2-0ubuntu1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "96.0+build2-0ubuntu1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "thunderbird", "binary_version": "1:91.5.0+build1-0ubuntu1" }, { "binary_name": "thunderbird-dev", "binary_version": "1:91.5.0+build1-0ubuntu1" }, { "binary_name": "thunderbird-gnome-support", "binary_version": "1:91.5.0+build1-0ubuntu1" }, { "binary_name": "thunderbird-mozsymbols", "binary_version": "1:91.5.0+build1-0ubuntu1" }, { "binary_name": "xul-ext-calendar-timezones", "binary_version": "1:91.5.0+build1-0ubuntu1" }, { "binary_name": "xul-ext-gdata-provider", "binary_version": "1:91.5.0+build1-0ubuntu1" }, { "binary_name": "xul-ext-lightning", "binary_version": "1:91.5.0+build1-0ubuntu1" } ] }