On pages containing an iframe, the "data:" protocol can be used to create a modal dialog through Javascript that will have an arbitrary domains as the dialog's location, spoofing of the origin of the modal dialog from the user view. Note: This attack only affects installations with e10 multiprocess turned off. Installations with e10s turned on do not support the modal dialog functionality. This vulnerability affects Firefox < 56.
{ "binaries": [ { "binary_name": "firefox", "binary_version": "56.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-dev", "binary_version": "56.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-globalmenu", "binary_version": "56.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "56.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-testsuite", "binary_version": "56.0+build6-0ubuntu0.14.04.1" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "firefox", "binary_version": "56.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-dev", "binary_version": "56.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-globalmenu", "binary_version": "56.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "56.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-testsuite", "binary_version": "56.0+build6-0ubuntu0.16.04.1" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "firefox", "binary_version": "56.0+build6-0ubuntu1" }, { "binary_name": "firefox-dev", "binary_version": "56.0+build6-0ubuntu1" }, { "binary_name": "firefox-globalmenu", "binary_version": "56.0+build6-0ubuntu1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "56.0+build6-0ubuntu1" }, { "binary_name": "firefox-testsuite", "binary_version": "56.0+build6-0ubuntu1" } ], "availability": "No subscription required" }