An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade librewolfUpgrade firefoxUpgrade firefox-esr | Aug 22, 2024 | Jan 8, 2020 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade thunderbird-debuginfo | 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 firefox-debugsourceUpgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox | Oct 25, 2019 | Oct 23, 2019 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Oct 28, 2019 | Oct 28, 2019 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird. | 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 the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 68.2 | Oct 25, 2019 | Oct 22, 2019 |
| Oracle Solaris | — | Upgrade 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 web/browser/firefox 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 thunderbird-debugsourceUpgrade thunderbirdUpgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoNo solution exists | Oct 25, 2019 | Oct 23, 2019 |
| Suse | — | Upgrade mozilla-nsprUpgrade firefox-gdk-pixbuf-langUpgrade firefox-gtk3-immodule-thaiUpgrade MozillaFirefox-branding-SLEDUpgrade firefox-gtk3-immodule-inuktitutUpgrade mozilla-nspr-32bitUpgrade libfirefox-gmodule-2_0-0Upgrade libfirefox-gio-2_0-0Upgrade firefox-esr-branding-openSUSEUpgrade mozilla-nspr-develUpgrade libfirefox-gobject-2_0-0Upgrade firefox-gtk3-immodules-tigrignaUpgrade firefox-atk-langUpgrade firefox-libffi4Upgrade firefox-gtk3-branding-upstreamUpgrade MozillaFirefox-translations-commonUpgrade firefox-gio-branding-upstreamUpgrade mozillafirefox-branding-upstreamUpgrade mozilla-nssUpgrade mozillafirefox-buildsymbolsUpgrade mozilla-nss-certsUpgrade firefox-gdk-pixbuf-query-loadersUpgrade firefox-libpango-1_0-0Upgrade firefox-libffi7Upgrade mozillafirefox-branding-sleUpgrade libfreebl3-32bitUpgrade libfreebl3Upgrade firefox-gdk-pixbuf-thumbnailerUpgrade firefox-libcairo-gobject2Upgrade libfirefox-glib-2_0-0Upgrade MozillaFirefox-develUpgrade firefox-gtk3-immodule-ximUpgrade MozillaFirefox-branding-openSUSEUpgrade firefox-libgtk-3-0Upgrade firefox-libgdk_pixbuf-2_0-0Upgrade MozillaFirefoxUpgrade firefox-gtk3-langUpgrade libfirefox-gthread-2_0-0Upgrade MozillaFirefox-translations-otherUpgrade firefox-glib2-langUpgrade libsoftokn3Upgrade firefox-gtk3-immodule-multipressUpgrade MozillaThunderbird-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade mozilla-nss-toolsUpgrade firefox-libatk-1_0-0Upgrade firefox-libcairo2Upgrade libsoftokn3-32bitUpgrade MozillaThunderbirdUpgrade firefox-gtk3-immodule-amharicUpgrade mozilla-nss-certs-32bitUpgrade firefox-gtk3-toolsUpgrade mozilla-nss-develUpgrade firefox-gtk3-immodule-vietnameseUpgrade mozilla-nss-32bitUpgrade firefox-gtk3-dataUpgrade firefox-glib2-toolsUpgrade firefox-libharfbuzz0 | Nov 1, 2019 | Oct 23, 2019 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Oct 24, 2019 | Oct 23, 2019 |
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