Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, and Thunderbird before 38.1 do not enforce key pinning upon encountering an X.509 certificate problem that generates a user dialog, which allows user-assisted man-in-the-middle attackers to bypass intended access restrictions by triggering a (1) expired certificate or (2) mismatched hostname for a domain with pinning enabled.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade firefoxUpgrade thunderbird | Dec 1, 2016 | Jul 5, 2015 |
| Freebsd | — | Upgrade firefox-esrUpgrade thunderbirdUpgrade seamonkeyUpgrade linux-seamonkeyUpgrade firefoxUpgrade libxulUpgrade linux-firefoxUpgrade linux-thunderbird | Dec 10, 2025 | Jul 16, 2015 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | Oct 30, 2017 | Jul 5, 2015 |
| Mfsa2015 67 | — | Upgrade to Mozilla Firefox version 39.0Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 38.1 | Jul 8, 2015 | Jul 5, 2015 |
| Mozilla Seamonkey | — | Upgrade to Mozilla SeaMonkey version 2.35.0 | Oct 22, 2015 | Jul 5, 2015 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 38.1 | Sep 14, 2015 | Jul 5, 2015 |
| Oracle Solaris | — | Upgrade consolidation/desktop/desktop-incorporation to version 0.5.11-0.175.3.0.0.28.0 on Solaris 11.3Upgrade entire to version 0.5.11-0.175.3.0.0.30.0 on Solaris 11.3Upgrade web/browser/firefox to version 38.4.0-0.175.3.8.0.2.0 on Solaris 11.3Upgrade database/sqlite-3 to version 3.9.2-0.175.3.8.0.2.0 on Solaris 11.3Upgrade database/sqlite-3/documentation to version 3.9.2-0.175.3.8.0.2.0 on Solaris 11.3Upgrade runtime/tcl-8/tcl-sqlite-3 to version 3.9.2-0.175.3.8.0.2.0 on Solaris 11.3 | May 29, 2017 | Jul 5, 2015 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Oct 16, 2024 | Jul 6, 2015 |
| Suse | — | Upgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbird-develUpgrade MozillaFirefoxUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-other | Dec 18, 2015 | Jul 5, 2015 |
| Ubuntu | — | Upgrade firefox | Nov 8, 2024 | Jul 6, 2015 |
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