Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side-channel attacks. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esrUpgrade firefox | Nov 8, 2019 | Sep 27, 2019 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Apr 27, 2020 | Sep 27, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Sep 27, 2019 |
| Centos_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox | Sep 5, 2019 | Sep 4, 2019 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Sep 9, 2019 | Sep 9, 2019 |
| Freebsd | — | Upgrade waterfoxUpgrade firefoxUpgrade libxulUpgrade seamonkeyUpgrade linux-seamonkeyUpgrade thunderbirdUpgrade linux-thunderbirdUpgrade linux-firefoxUpgrade firefox-esr | Sep 4, 2019 | Sep 3, 2019 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | Nov 25, 2019 | Sep 27, 2019 |
| Mfsa2019 25 | — | Upgrade to Mozilla Firefox version 69.0Upgrade to the latest version of Mozilla Firefox | Sep 4, 2019 | Sep 3, 2019 |
| Mfsa2019 26 | — | Upgrade to Mozilla Firefox ESR version 68.1Upgrade to the latest version of Mozilla Firefox | Sep 4, 2019 | Sep 3, 2019 |
| Mfsa2019 27 | — | Upgrade to Mozilla Firefox ESR version 60.9Upgrade to the latest version of Mozilla Firefox | Sep 4, 2019 | Sep 3, 2019 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 68.1 | Sep 16, 2021 | Sep 27, 2019 |
| Oracle Solaris | — | Upgrade web/data/firefox-bookmarks to version 60.9.0-11.4.14.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 60.9.0-11.4.14.0.1.3.0 on Solaris 11.4Upgrade web/browser/firefox to version 60.9.0-11.4.14.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird to version 60.9.0-11.4.14.0.1.3.0 on Solaris 11.4 | Oct 16, 2019 | Sep 27, 2019 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Sep 11, 2019 | Sep 3, 2019 |
| Redhat_linux | — | Upgrade thunderbird-debugsourceUpgrade firefox-debugsourceNo solution existsUpgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefox | Sep 5, 2019 | Sep 4, 2019 |
| Suse | — | Upgrade firefox-libffi4Upgrade firefox-gtk3-immodule-multipressUpgrade firefox-libharfbuzz0Upgrade mozillafirefox-buildsymbolsUpgrade firefox-libffi7Upgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-translations-otherUpgrade mozillafirefox-branding-upstreamUpgrade firefox-libcairo-gobject2Upgrade firefox-gio-branding-upstreamUpgrade firefox-atk-langUpgrade firefox-gtk3-immodule-amharicUpgrade libsoftokn3-32bitUpgrade libfirefox-gobject-2_0-0Upgrade MozillaFirefox-translations-commonUpgrade mozilla-nspr-develUpgrade firefox-gtk3-immodule-inuktitutUpgrade firefox-gtk3-immodule-vietnameseUpgrade firefox-libatk-1_0-0Upgrade enigmailUpgrade firefox-gdk-pixbuf-query-loadersUpgrade firefox-libgtk-3-0Upgrade firefox-gtk3-immodule-thaiUpgrade firefox-gtk3-immodules-tigrignaUpgrade libfirefox-gthread-2_0-0Upgrade firefox-gdk-pixbuf-langUpgrade firefox-gtk3-langUpgrade firefox-gtk3-dataUpgrade mozillafirefox-branding-sleUpgrade MozillaThunderbirdUpgrade libfirefox-gio-2_0-0Upgrade MozillaThunderbird-buildsymbolsUpgrade libfirefox-gmodule-2_0-0Upgrade firefox-gtk3-branding-upstreamUpgrade mozilla-nss-toolsUpgrade firefox-gtk3-toolsUpgrade firefox-gtk3-immodule-ximUpgrade mozilla-nss-certsUpgrade firefox-libpango-1_0-0Upgrade libfirefox-glib-2_0-0Upgrade MozillaFirefoxUpgrade firefox-glib2-toolsUpgrade firefox-glib2-langUpgrade libfreebl3Upgrade firefox-libcairo2Upgrade firefox-gdk-pixbuf-thumbnailerUpgrade mozilla-nsprUpgrade mozilla-nssUpgrade mozilla-nss-32bitUpgrade libfreebl3-32bitUpgrade mozilla-nss-develUpgrade firefox-libgdk_pixbuf-2_0-0Upgrade libsoftokn3Upgrade MozillaFirefox-translations-otherUpgrade mozilla-nspr-32bitUpgrade mozilla-nss-certs-32bitUpgrade MozillaFirefox-branding-SLED | Sep 18, 2019 | Sep 3, 2019 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Sep 5, 2019 | Sep 3, 2019 |
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