The content security policy (CSP) "sandbox" directive did not create a unique origin for the document, causing it to behave as if the "allow-same-origin" keyword were always specified. This could allow a Cross-Site Scripting (XSS) attack to be launched from unsafe content. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Dec 1, 2017 | Oct 25, 2017 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Centos_linux | — | Upgrade firefox-debuginfoUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox | Oct 2, 2017 | Sep 29, 2017 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Sep 30, 2017 | Sep 29, 2017 |
| Freebsd | — | Upgrade libxulUpgrade firefoxUpgrade linux-seamonkeyUpgrade thunderbirdUpgrade linux-thunderbirdUpgrade firefox-esrUpgrade seamonkeyUpgrade linux-firefox | Sep 29, 2017 | Sep 29, 2017 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox.Upgrade mail-client/thunderbird. | Feb 20, 2018 | Feb 20, 2018 |
| Mfsa2017 21 | — | Upgrade to Mozilla Firefox version 56.0Upgrade to the latest version of Mozilla Firefox | Jul 12, 2018 | Jun 11, 2018 |
| Mfsa2017 22 | — | Upgrade to Mozilla Firefox ESR version 52.4Upgrade to the latest version of Mozilla Firefox | Sep 29, 2017 | Sep 28, 2017 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 52.4Upgrade to the latest version of Mozilla Thunderbird | Oct 11, 2017 | Oct 9, 2017 |
| Oracle Solaris | — | Upgrade web/browser/firefox/plugin/firefox-java to version 52.4.0-0.175.3.25.0.3.0 on Solaris 11.3Upgrade web/data/firefox-bookmarks to version 52.4.0-0.175.3.25.0.3.0 on Solaris 11.3Upgrade web/browser/firefox to version 52.4.0-0.175.3.25.0.3.0 on Solaris 11.3Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 52.4.0-0.175.3.26.0.4.0 on Solaris 11.3Upgrade mail/thunderbird to version 52.4.0-0.175.3.26.0.4.0 on Solaris 11.3 | Nov 30, 2017 | Nov 30, 2017 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Sep 29, 2017 | Sep 28, 2017 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | Oct 4, 2017 | Sep 29, 2017 |
| Suse | — | Upgrade MozillaThunderbird-translations-otherUpgrade mozilla-nss-sysinitUpgrade libsoftokn3-hmac-32bitUpgrade MozillaThunderbird-translations-commonUpgrade libsoftokn3Upgrade MozillaFirefox-translationsUpgrade libfreebl3-hmacUpgrade MozillaFirefoxUpgrade mozilla-nss-sysinit-32bitUpgrade libsoftokn3-32bitUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbird-buildsymbolsUpgrade MozillaThunderbirdUpgrade MozillaFirefox-develUpgrade mozilla-nss-toolsUpgrade libsoftokn3-x86Upgrade mozilla-nss-32bitUpgrade mozilla-nss-develUpgrade mozilla-nss-certsUpgrade libfreebl3-hmac-32bitUpgrade MozillaThunderbird-develUpgrade libsoftokn3-hmacUpgrade libfreebl3-x86Upgrade mozilla-nssUpgrade mozilla-nss-certs-32bitUpgrade libfreebl3Upgrade MozillaFirefox-translations-otherUpgrade mozilla-nss-x86Upgrade libfreebl3-32bit | Oct 2, 2017 | Sep 29, 2017 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Oct 3, 2017 | Sep 29, 2017 |
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