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Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly follow the CORS cross-origin request algorithm for the POST method in situations involving an unspecified Content-Type header manipulation, which allows remote attackers to bypass the Same Origin Policy by leveraging the lack of a preflight-request step.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade firefoxUpgrade thunderbird | Dec 1, 2016 | Nov 5, 2015 |
| Debian | — | Upgrade iceweaselUpgrade icedove | Nov 9, 2015 | Nov 5, 2015 |
| Freebsd | — | Upgrade nssUpgrade linux-seamonkeyUpgrade firefox-esrUpgrade linux-thunderbirdUpgrade linux-firefoxUpgrade nsprUpgrade thunderbirdUpgrade linux-c6-nsprUpgrade libxulUpgrade seamonkeyUpgrade firefox | Dec 10, 2025 | Nov 19, 2015 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin. | Oct 30, 2017 | Nov 5, 2015 |
| Mfsa2015 127 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 42.0Upgrade to Mozilla Firefox ESR version 38.4 | Nov 4, 2015 | Nov 3, 2015 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 38.4Upgrade to the latest version of Mozilla Thunderbird | Nov 30, 2015 | Nov 5, 2015 |
| Oracle Solaris | — | Upgrade runtime/tcl-8/tcl-sqlite-3 to version 3.9.2-0.175.3.8.0.2.0 on Solaris 11.3Upgrade mail/thunderbird to version 45.3.0-0.175.3.14.0.4.0 on Solaris 11.3Upgrade database/sqlite-3/documentation to version 3.9.2-0.175.3.8.0.2.0 on Solaris 11.3Upgrade 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 developer/yasm to version 1.3.0-0.175.3.14.0.2.0 on Solaris 11.3Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 45.3.0-0.175.3.14.0.4.0 on Solaris 11.3 | May 29, 2017 | Nov 5, 2015 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Oct 16, 2024 | Nov 5, 2015 |
| Suse | — | Upgrade mozilla-nss-toolsUpgrade mozilla-nsprUpgrade libsoftokn3-x86Upgrade libfreebl3-32bitUpgrade mozilla-nss-x86Upgrade MozillaThunderbirdUpgrade MozillaFirefoxUpgrade MozillaFirefox-translationsUpgrade mozilla-nspr-develUpgrade libsoftokn3-32bitUpgrade MozillaFirefox-translations-commonUpgrade mozilla-nspr-x86Upgrade mozilla-nspr-32bitUpgrade mozillafirefox-branding-sleUpgrade libfreebl3-hmac-32bitUpgrade mozilla-nssUpgrade mozilla-nss-32bitUpgrade libsoftokn3Upgrade libsoftokn3-hmac-32bitUpgrade libfreebl3Upgrade mozilla-nss-certs-32bitUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-develUpgrade mozilla-nss-develUpgrade mozilla-nss-certsUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-branding-SLEDUpgrade libsoftokn3-hmacUpgrade MozillaThunderbird-translations-otherUpgrade libfreebl3-x86Upgrade libfreebl3-hmac | Dec 18, 2015 | Nov 5, 2015 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Nov 9, 2015 | Nov 5, 2015 |
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