Add-on updates failed to verify that the add-on ID inside the signed package matched the ID of the add-on being updated. An attacker who could perform a man-in-the-middle attack on the user's connection to the update server and defeat the certificate pinning protection could provide a malicious signed add-on instead of a valid update. This vulnerability affects Firefox ESR < 45.5 and Firefox < 50.
{ "binaries": [ { "binary_name": "firefox", "binary_version": "50.0+build2-0ubuntu0.14.04.2" }, { "binary_name": "firefox-dev", "binary_version": "50.0+build2-0ubuntu0.14.04.2" }, { "binary_name": "firefox-globalmenu", "binary_version": "50.0+build2-0ubuntu0.14.04.2" }, { "binary_name": "firefox-mozsymbols", "binary_version": "50.0+build2-0ubuntu0.14.04.2" }, { "binary_name": "firefox-testsuite", "binary_version": "50.0+build2-0ubuntu0.14.04.2" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "firefox", "binary_version": "50.0+build2-0ubuntu0.16.04.2" }, { "binary_name": "firefox-dev", "binary_version": "50.0+build2-0ubuntu0.16.04.2" }, { "binary_name": "firefox-globalmenu", "binary_version": "50.0+build2-0ubuntu0.16.04.2" }, { "binary_name": "firefox-mozsymbols", "binary_version": "50.0+build2-0ubuntu0.16.04.2" }, { "binary_name": "firefox-testsuite", "binary_version": "50.0+build2-0ubuntu0.16.04.2" } ], "availability": "No subscription required" }