WebExtensions with the "ActiveTab" permission are able to access frames hosted within the active tab even if the frames are cross-origin. Malicious extensions can inject frames from arbitrary origins into the loaded page and then interact with them, bypassing same-origin user expectations with this permission. This vulnerability affects Firefox < 58.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "58.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-dev", "binary_version": "58.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-globalmenu", "binary_version": "58.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "58.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-testsuite", "binary_version": "58.0+build6-0ubuntu0.14.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "58.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-dev", "binary_version": "58.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-globalmenu", "binary_version": "58.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "58.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-testsuite", "binary_version": "58.0+build6-0ubuntu0.16.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "59.0.1+build1-0ubuntu1" }, { "binary_name": "firefox-dev", "binary_version": "59.0.1+build1-0ubuntu1" }, { "binary_name": "firefox-globalmenu", "binary_version": "59.0.1+build1-0ubuntu1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "59.0.1+build1-0ubuntu1" }, { "binary_name": "firefox-testsuite", "binary_version": "59.0.1+build1-0ubuntu1" } ] }