A use-after-free vulnerability can occur in design mode when image objects are resized if objects referenced during the resizing have been freed from memory. This results in a potentially exploitable crash. 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 firefoxUpgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | Oct 2, 2017 | Sep 29, 2017 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Sep 30, 2017 | Sep 29, 2017 |
| Freebsd | — | Upgrade linux-seamonkeyUpgrade linux-thunderbirdUpgrade firefox-esrUpgrade seamonkeyUpgrade firefoxUpgrade thunderbirdUpgrade linux-firefoxUpgrade libxul | Sep 29, 2017 | Sep 29, 2017 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin.Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin. | 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 the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 52.4 | Sep 29, 2017 | Sep 28, 2017 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 52.4 | Oct 11, 2017 | Oct 9, 2017 |
| Oracle Solaris | — | Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 52.4.0-0.175.3.26.0.4.0 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 to version 52.4.0-0.175.3.26.0.4.0 on Solaris 11.3Upgrade 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 11.3 | Nov 30, 2017 | Nov 30, 2017 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Sep 29, 2017 | Sep 28, 2017 |
| Redhat_linux | — | Upgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefoxUpgrade thunderbird | Oct 4, 2017 | Sep 29, 2017 |
| Suse | — | Upgrade MozillaFirefox-translations-otherUpgrade libfreebl3-32bitUpgrade mozilla-nss-sysinitUpgrade mozilla-nss-x86Upgrade libsoftokn3Upgrade MozillaFirefoxUpgrade libfreebl3-hmacUpgrade libfreebl3-hmac-32bitUpgrade libsoftokn3-hmac-32bitUpgrade libfreebl3-x86Upgrade MozillaThunderbird-translations-otherUpgrade mozilla-nss-certs-32bitUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-develUpgrade mozilla-nss-toolsUpgrade libsoftokn3-32bitUpgrade MozillaThunderbirdUpgrade mozilla-nss-sysinit-32bitUpgrade mozilla-nss-certsUpgrade mozilla-nss-develUpgrade MozillaFirefox-translationsUpgrade mozilla-nss-32bitUpgrade libfreebl3Upgrade mozilla-nssUpgrade libsoftokn3-x86Upgrade libsoftokn3-hmacUpgrade MozillaThunderbird-buildsymbols | Oct 2, 2017 | Sep 29, 2017 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | 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