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The HTTP Alternative Services feature in Mozilla Firefox before 37.0.1 allows man-in-the-middle attackers to bypass an intended X.509 certificate-verification step for an SSL server by specifying that server in the uri-host field of an Alt-Svc HTTP/2 response header.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade firefoxUpgrade linux-firefox | Dec 10, 2025 | Apr 4, 2015 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird. | Oct 30, 2017 | Apr 8, 2015 |
| Mfsa2015 44 | — | Upgrade to Mozilla Firefox version 37.0.1Upgrade to the latest version of Mozilla Firefox | Apr 6, 2015 | Apr 3, 2015 |
| Mozilla Seamonkey | — | Upgrade to Mozilla SeaMonkey version 2.35Upgrade to the latest version of Mozilla SeaMonkey | Oct 22, 2015 | Apr 8, 2015 |
| Oracle Solaris | — | Upgrade 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 runtime/tcl-8/tcl-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 11.3 | May 29, 2017 | Apr 8, 2015 |
| Suse | — | Upgrade MozillaFirefoxUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox-devel | Dec 18, 2015 | Apr 8, 2015 |
| Ubuntu | — | Upgrade firefox | Nov 8, 2024 | Apr 8, 2015 |
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