Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. 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 < 78.13, Firefox ESR < 78.13, and Firefox < 91.
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 17, 2021 |
| Alpine Linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade mozjs78Upgrade firefox-esrUpgrade librewolf | Aug 22, 2024 | Aug 17, 2021 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Sep 16, 2021 | Aug 17, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Aug 17, 2021 |
| Centos_linux | — | Upgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade firefox-debugsource | Aug 17, 2021 | Aug 16, 2021 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Aug 13, 2021 | Aug 13, 2021 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird. | Feb 22, 2022 | Aug 17, 2021 |
| Mfsa2021 33 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 91.0 | Aug 12, 2021 | Aug 10, 2021 |
| Mfsa2021 34 | — | Upgrade to Mozilla Firefox ESR version 78.13Upgrade to the latest version of Mozilla Firefox | Aug 12, 2021 | Aug 10, 2021 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 91.0 | Sep 16, 2021 | Aug 17, 2021 |
| Oracle Solaris | — | Upgrade 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 11.4Upgrade mail/thunderbird to version 78.14.0-11.4.38.0.1.101.3 on Solaris 11.4 | Nov 17, 2021 | Aug 17, 2021 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Aug 17, 2021 | Aug 10, 2021 |
| Redhat_linux | — | Upgrade thunderbird-debugsourceUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-debugsourceUpgrade firefox-debuginfoNo solution existsUpgrade thunderbird | Aug 17, 2021 | Aug 16, 2021 |
| Rocky_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debuginfo | May 5, 2022 | Aug 17, 2021 |
| Suse | — | Upgrade MozillaFirefox-translations-otherUpgrade rust-cbindgenUpgrade MozillaFirefox-branding-SLEDUpgrade MozillaThunderbirdUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-translations-commonUpgrade mozillafirefox-branding-sleUpgrade MozillaThunderbird-translations-otherUpgrade mozillafirefox-buildsymbolsUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-commonUpgrade mozillafirefox-branding-upstream | Aug 13, 2021 | Aug 11, 2021 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Aug 12, 2021 | Aug 11, 2021 |
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