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.
{ "binaries": [ { "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", "binary_version": "79.0+build1-0ubuntu0.16.04.2" } ], "availability": "No subscription required" }
{ "binaries": [ { "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", "binary_version": "79.0+build1-0ubuntu0.18.04.1" } ], "availability": "No subscription required" }
{ "binaries": [ { "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", "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1" } ], "availability": "No subscription required" }
{ "binaries": [ { "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", "binary_version": "79.0+build1-0ubuntu0.20.04.1" } ], "availability": "No subscription required" }
{ "binaries": [ { "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", "binary_version": "1:78.7.1+build1-0ubuntu0.20.04.1" } ], "availability": "No subscription required" }