Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
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 |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefox | May 4, 2022 | Aug 5, 2021 |
| Alpine Linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade mozjs78Upgrade librewolfUpgrade firefox-esr | Aug 22, 2024 | Aug 5, 2021 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Sep 16, 2021 | Aug 5, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Aug 5, 2021 |
| Centos_linux | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade firefox-debugsource | Jul 16, 2021 | Jul 15, 2021 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Jul 16, 2021 | Jul 16, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin. | Feb 22, 2022 | Aug 5, 2021 |
| Mfsa2021 28 | — | Upgrade to Mozilla Firefox version 90.0 | Jul 14, 2021 | Jul 13, 2021 |
| Mfsa2021 29 | — | Upgrade to Mozilla Firefox ESR version 78.12 | Jul 14, 2021 | Jul 13, 2021 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 78.12 | Jul 14, 2021 | Jul 13, 2021 |
| Oracle Solaris | — | Upgrade mail/thunderbird to version 78.14.0-11.4.38.0.1.101.3 on Solaris 11.4Upgrade web/browser/firefox to version 78.14.0-11.4.38.0.1.101.3 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 78.14.0-11.4.38.0.1.101.3 on Solaris 11.4 | Nov 17, 2021 | Aug 5, 2021 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Jul 16, 2021 | Jul 13, 2021 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoNo solution exists | Jul 16, 2021 | Jul 15, 2021 |
| Rocky_linux | — | Upgrade firefoxUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-debugsource | Mar 12, 2024 | Aug 5, 2021 |
| Suse | — | Upgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefoxUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-commonUpgrade mozillafirefox-buildsymbolsUpgrade mozillafirefox-branding-upstream | Jul 17, 2021 | Jul 16, 2021 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Jul 17, 2021 | Jul 16, 2021 |
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