The Find API for WebExtensions can search some privileged pages, such as "about:debugging", if these pages are open in a tab. This could allow a malicious WebExtension to search for otherwise protected data if a user has it open. This vulnerability affects Firefox < 59.
{ "binaries": [ { "binary_version": "59.0+build5-0ubuntu0.14.04.1", "binary_name": "firefox" }, { "binary_version": "59.0+build5-0ubuntu0.14.04.1", "binary_name": "firefox-dev" }, { "binary_version": "59.0+build5-0ubuntu0.14.04.1", "binary_name": "firefox-globalmenu" }, { "binary_version": "59.0+build5-0ubuntu0.14.04.1", "binary_name": "firefox-mozsymbols" }, { "binary_version": "59.0+build5-0ubuntu0.14.04.1", "binary_name": "firefox-testsuite" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "59.0+build5-0ubuntu0.16.04.1", "binary_name": "firefox" }, { "binary_version": "59.0+build5-0ubuntu0.16.04.1", "binary_name": "firefox-dev" }, { "binary_version": "59.0+build5-0ubuntu0.16.04.1", "binary_name": "firefox-globalmenu" }, { "binary_version": "59.0+build5-0ubuntu0.16.04.1", "binary_name": "firefox-mozsymbols" }, { "binary_version": "59.0+build5-0ubuntu0.16.04.1", "binary_name": "firefox-testsuite" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "59.0.1+build1-0ubuntu1", "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" } ], "availability": "No subscription required" }