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A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Mar 28, 2019 | Feb 5, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Feb 5, 2019 |
| Centos_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | Feb 5, 2019 | Jan 29, 2019 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Jan 31, 2019 | Jan 29, 2019 |
| Freebsd | — | Upgrade thunderbirdUpgrade waterfoxUpgrade firefoxUpgrade seamonkeyUpgrade linux-seamonkeyUpgrade firefox-esrUpgrade linux-firefoxUpgrade libxulUpgrade linux-thunderbird | Jan 30, 2019 | Jan 29, 2019 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin. | Mar 11, 2019 | Feb 5, 2019 |
| Mfsa2019 01 | — | Upgrade to Mozilla Firefox version 65.0Upgrade to the latest version of Mozilla Firefox | Jan 30, 2019 | Jan 29, 2019 |
| Mfsa2019 02 | — | Upgrade to Mozilla Firefox ESR version 60.5Upgrade to the latest version of Mozilla Firefox | Jan 30, 2019 | Jan 29, 2019 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 60.5Upgrade to the latest version of Mozilla Thunderbird | Jan 30, 2019 | Jan 29, 2019 |
| Oracle Solaris | — | Upgrade mail/thunderbird to version 60.6.1-11.4.9.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 60.6.1-11.4.9.0.1.2.0 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 60.5.0-11.4.6.0.1.4.0 on Solaris 11.4Upgrade web/browser/firefox to version 60.5.0-11.4.6.0.1.4.0 on Solaris 11.4 | Feb 20, 2019 | Feb 5, 2019 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Jan 31, 2019 | Jan 29, 2019 |
| Redhat_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade thunderbirdUpgrade firefox | Jan 31, 2019 | Jan 30, 2019 |
| Suse | — | Upgrade libsoftokn3-hmac-32bitUpgrade mozillafirefox-branding-upstreamUpgrade libsoftokn3-hmacUpgrade libfreebl3-hmac-32bitUpgrade MozillaFirefoxUpgrade MozillaThunderbird-translations-commonUpgrade mozilla-nss-certsUpgrade mozilla-nss-32bitUpgrade mozilla-nss-develUpgrade libfreebl3-32bitUpgrade libfreebl3-hmacUpgrade mozilla-nss-certs-32bitUpgrade mozillafirefox-branding-sleUpgrade libfreebl3Upgrade mozillafirefox-buildsymbolsUpgrade MozillaFirefox-translations-otherUpgrade mozilla-nss-sysinit-32bitUpgrade MozillaFirefox-translations-commonUpgrade libsoftokn3-32bitUpgrade MozillaFirefox-develUpgrade MozillaThunderbirdUpgrade mozilla-nss-toolsUpgrade mozilla-nssUpgrade libsoftokn3Upgrade MozillaThunderbird-buildsymbolsUpgrade mozilla-nss-sysinitUpgrade MozillaThunderbird-translations-other | Feb 5, 2019 | Jan 29, 2019 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Feb 5, 2019 | Jan 29, 2019 |
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