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.
{ "availability": "No subscription required", "binaries": [ { "binary_version": "79.0+build1-0ubuntu0.16.04.2", "binary_name": "firefox" }, { "binary_version": "79.0+build1-0ubuntu0.16.04.2", "binary_name": "firefox-dev" }, { "binary_version": "79.0+build1-0ubuntu0.16.04.2", "binary_name": "firefox-geckodriver" }, { "binary_version": "79.0+build1-0ubuntu0.16.04.2", "binary_name": "firefox-mozsymbols" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "79.0+build1-0ubuntu0.18.04.1", "binary_name": "firefox" }, { "binary_version": "79.0+build1-0ubuntu0.18.04.1", "binary_name": "firefox-dev" }, { "binary_version": "79.0+build1-0ubuntu0.18.04.1", "binary_name": "firefox-geckodriver" }, { "binary_version": "79.0+build1-0ubuntu0.18.04.1", "binary_name": "firefox-mozsymbols" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-dev" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-gnome-support" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-mozsymbols" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-calendar-timezones" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-gdata-provider" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-lightning" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "79.0+build1-0ubuntu0.20.04.1", "binary_name": "firefox" }, { "binary_version": "79.0+build1-0ubuntu0.20.04.1", "binary_name": "firefox-dev" }, { "binary_version": "79.0+build1-0ubuntu0.20.04.1", "binary_name": "firefox-geckodriver" }, { "binary_version": "79.0+build1-0ubuntu0.20.04.1", "binary_name": "firefox-mozsymbols" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "1:78.7.1+build1-0ubuntu0.20.04.1", "binary_name": "thunderbird" }, { "binary_version": "1:78.7.1+build1-0ubuntu0.20.04.1", "binary_name": "thunderbird-dev" }, { "binary_version": "1:78.7.1+build1-0ubuntu0.20.04.1", "binary_name": "thunderbird-gnome-support" }, { "binary_version": "1:78.7.1+build1-0ubuntu0.20.04.1", "binary_name": "thunderbird-mozsymbols" }, { "binary_version": "1:78.7.1+build1-0ubuntu0.20.04.1", "binary_name": "xul-ext-calendar-timezones" }, { "binary_version": "1:78.7.1+build1-0ubuntu0.20.04.1", "binary_name": "xul-ext-gdata-provider" }, { "binary_version": "1:78.7.1+build1-0ubuntu0.20.04.1", "binary_name": "xul-ext-lightning" } ] }