When following the value's prototype chain, it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefoxUpgrade librewolfUpgrade firefox-esr | Aug 22, 2024 | Jan 8, 2020 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Apr 27, 2020 | Jan 8, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jan 8, 2020 |
| Centos_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | Oct 25, 2019 | Oct 23, 2019 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Oct 28, 2019 | Oct 28, 2019 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin. | Mar 16, 2020 | Jan 8, 2020 |
| Mfsa2019 33 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 68.2 | Oct 23, 2019 | Oct 22, 2019 |
| Mfsa2019 34 | — | Upgrade to Mozilla Firefox version 70.0Upgrade to the latest version of Mozilla Firefox | Oct 23, 2019 | Oct 22, 2019 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 68.2Upgrade to the latest version of Mozilla Thunderbird | Oct 25, 2019 | Oct 22, 2019 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 68.2.0-11.4.15.0.1.4.0 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 68.2.0-11.4.15.0.1.4.0 on Solaris 11.4Upgrade mail/thunderbird to version 68.2.0-11.4.15.0.1.4.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 68.2.0-11.4.15.0.1.4.0 on Solaris 11.4 | Nov 20, 2019 | Nov 20, 2019 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Oct 30, 2019 | Oct 22, 2019 |
| Redhat_linux | — | Upgrade firefox-debugsourceUpgrade thunderbird-debuginfoNo solution existsUpgrade firefox-debuginfoUpgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debugsource | Oct 25, 2019 | Oct 23, 2019 |
| Suse | — | Upgrade firefox-gdk-pixbuf-query-loadersUpgrade firefox-glib2-langUpgrade firefox-gio-branding-upstreamUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-branding-openSUSEUpgrade firefox-libcairo-gobject2Upgrade firefox-atk-langUpgrade libfirefox-gmodule-2_0-0Upgrade MozillaThunderbird-translations-commonUpgrade firefox-gtk3-dataUpgrade MozillaFirefox-branding-SLEDUpgrade MozillaFirefox-develUpgrade libfirefox-gthread-2_0-0Upgrade firefox-libffi4Upgrade firefox-gtk3-immodule-ximUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbirdUpgrade firefox-gtk3-immodule-thaiUpgrade firefox-libgtk-3-0Upgrade MozillaFirefox-translations-otherUpgrade libsoftokn3-32bitUpgrade firefox-libffi7Upgrade firefox-gtk3-branding-upstreamUpgrade mozilla-nspr-develUpgrade mozilla-nssUpgrade firefox-gtk3-immodule-multipressUpgrade firefox-gtk3-immodules-tigrignaUpgrade firefox-gtk3-toolsUpgrade mozilla-nspr-32bitUpgrade MozillaFirefox-translations-commonUpgrade firefox-libharfbuzz0Upgrade mozilla-nss-certsUpgrade firefox-gtk3-immodule-amharicUpgrade mozillafirefox-branding-sleUpgrade mozilla-nss-toolsUpgrade firefox-gtk3-immodule-vietnameseUpgrade mozilla-nsprUpgrade firefox-libgdk_pixbuf-2_0-0Upgrade firefox-libatk-1_0-0Upgrade MozillaFirefoxUpgrade mozillafirefox-buildsymbolsUpgrade mozilla-nss-32bitUpgrade firefox-gdk-pixbuf-langUpgrade libfirefox-gobject-2_0-0Upgrade mozilla-nss-develUpgrade firefox-gdk-pixbuf-thumbnailerUpgrade mozilla-nss-certs-32bitUpgrade libfreebl3Upgrade firefox-libcairo2Upgrade firefox-glib2-toolsUpgrade libfreebl3-32bitUpgrade libfirefox-gio-2_0-0Upgrade firefox-gtk3-immodule-inuktitutUpgrade firefox-esr-branding-openSUSEUpgrade firefox-libpango-1_0-0Upgrade libfirefox-glib-2_0-0Upgrade firefox-gtk3-langUpgrade libsoftokn3 | Nov 1, 2019 | Oct 23, 2019 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Oct 24, 2019 | Oct 23, 2019 |
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