Mozilla developers and community members reported memory safety bugs present in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Nov 8, 2019 | Jul 23, 2019 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Apr 27, 2020 | Jul 23, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jul 23, 2019 |
| Centos_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debugsource | May 31, 2019 | May 21, 2019 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | May 23, 2019 | May 23, 2019 |
| Freebsd | — | Upgrade waterfoxUpgrade linux-seamonkeyUpgrade linux-thunderbirdUpgrade firefox-esrUpgrade linux-firefoxUpgrade libxulUpgrade thunderbirdUpgrade firefoxUpgrade seamonkey | May 23, 2019 | May 22, 2019 |
| Mfsa2019 13 | — | Upgrade to Mozilla Firefox version 67.0Upgrade to the latest version of Mozilla Firefox | May 22, 2019 | May 21, 2019 |
| Mfsa2019 14 | — | Upgrade to Mozilla Firefox ESR version 60.7Upgrade to the latest version of Mozilla Firefox | May 22, 2019 | May 21, 2019 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 60.7Upgrade to the latest version of Mozilla Thunderbird | May 23, 2019 | May 21, 2019 |
| Oracle Solaris | — | Upgrade web/data/firefox-bookmarks to version 60.7.0-11.4.10.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 60.7.0-11.4.10.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird to version 60.7.0-11.4.10.0.1.2.0 on Solaris 11.4Upgrade web/browser/firefox to version 60.7.0-11.4.10.0.1.2.0 on Solaris 11.4 | Jun 26, 2019 | Jun 26, 2019 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | May 24, 2019 | May 22, 2019 |
| Redhat_linux | — | Upgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefoxUpgrade thunderbirdUpgrade firefox-debugsourceUpgrade thunderbird-debugsource | May 24, 2019 | May 23, 2019 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefoxUpgrade mozillafirefox-buildsymbolsUpgrade mozillafirefox-branding-upstreamUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-buildsymbolsUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-common | May 31, 2019 | May 21, 2019 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | May 22, 2019 | May 21, 2019 |
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