Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly control the ability of a web worker to create a WebSocket object, which allows remote attackers to bypass intended mixed-content restrictions via crafted JavaScript code.
CVSS Details
- CVSS 3.1 Base Score: 8.1
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade firefoxUpgrade thunderbird | Dec 1, 2016 | Nov 5, 2015 |
| Debian | — | Upgrade icedoveUpgrade iceweasel | Nov 9, 2015 | Nov 5, 2015 |
| Freebsd | — | Upgrade libxulUpgrade nssUpgrade firefox-esrUpgrade linux-seamonkeyUpgrade linux-thunderbirdUpgrade thunderbirdUpgrade firefoxUpgrade linux-c6-nsprUpgrade nsprUpgrade linux-firefoxUpgrade seamonkey | Dec 10, 2025 | Nov 19, 2015 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird. | Oct 30, 2017 | Nov 5, 2015 |
| Mfsa2015 132 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 38.4Upgrade to Mozilla Firefox version 42.0 | Nov 4, 2015 | Nov 3, 2015 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 38.4 | Nov 30, 2015 | Nov 5, 2015 |
| Oracle Solaris | — | Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 45.3.0-0.175.3.14.0.4.0 on Solaris 11.3Upgrade developer/yasm to version 1.3.0-0.175.3.14.0.2.0 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 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 11.3 | May 29, 2017 | Nov 5, 2015 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Oct 16, 2024 | Nov 5, 2015 |
| Suse | — | Upgrade mozilla-nspr-x86Upgrade mozilla-nss-develUpgrade MozillaFirefoxUpgrade mozilla-nss-x86Upgrade libsoftokn3Upgrade MozillaFirefox-translationsUpgrade MozillaFirefox-translations-commonUpgrade libsoftokn3-32bitUpgrade libsoftokn3-hmac-32bitUpgrade mozilla-nss-toolsUpgrade mozilla-nsprUpgrade mozilla-nspr-develUpgrade MozillaThunderbird-translations-commonUpgrade libsoftokn3-x86Upgrade mozillafirefox-branding-sleUpgrade libfreebl3-32bitUpgrade mozilla-nss-32bitUpgrade libfreebl3-hmac-32bitUpgrade libsoftokn3-hmacUpgrade mozilla-nss-certsUpgrade mozilla-nspr-32bitUpgrade MozillaThunderbirdUpgrade libfreebl3-hmacUpgrade MozillaThunderbird-develUpgrade mozilla-nss-certs-32bitUpgrade libfreebl3Upgrade libfreebl3-x86Upgrade MozillaFirefox-develUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-branding-SLEDUpgrade mozilla-nssUpgrade MozillaFirefox-translations-other | Dec 18, 2015 | Nov 5, 2015 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Nov 9, 2015 | Nov 5, 2015 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub