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Mozilla Firefox 4.x through 11.0, Thunderbird 5.0 through 11.0, and SeaMonkey before 2.9 do not properly construct the Origin and Sec-WebSocket-Origin HTTP headers, which might allow remote attackers to bypass an IPv6 literal ACL via a cross-site (1) XMLHttpRequest or (2) WebSocket operation involving a nonstandard port number and an IPv6 address that contains certain zero fields.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade firefoxUpgrade libxulUpgrade thunderbirdUpgrade seamonkeyUpgrade linux-seamonkeyUpgrade linux-thunderbirdUpgrade linux-firefox | Dec 10, 2025 | Apr 24, 2012 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade www-client/icecat.Upgrade www-client/seamonkey-bin.Upgrade www-client/mozilla-firefox.Upgrade net-libs/xulrunner.Upgrade www-client/seamonkey.Upgrade dev-libs/nss.Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade net-libs/xulrunner-bin.Upgrade www-client/mozilla-firefox-bin.Upgrade mail-client/mozilla-thunderbird.Upgrade mail-client/mozilla-thunderbird-bin. | Oct 30, 2017 | Apr 25, 2012 |
| Mfsa2012 28 | — | Upgrade to Mozilla Firefox version 12.0Upgrade to the latest version of Mozilla Firefox | Jun 14, 2012 | Apr 25, 2012 |
| Mozilla Seamonkey | — | Upgrade to Mozilla SeaMonkey version 2.9Upgrade to the latest version of Mozilla SeaMonkey | Apr 27, 2012 | Apr 25, 2012 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 12.0 | Apr 27, 2012 | Apr 25, 2012 |
| Suse | — | Upgrade MozillaThunderbirdUpgrade MozillaFirefox-develUpgrade MozillaFirefoxUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-develUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-translationsUpgrade MozillaFirefox-translations-common | Feb 17, 2015 | Jun 28, 2013 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Nov 8, 2024 | Apr 25, 2012 |
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