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 firefoxUpgrade thunderbird | May 4, 2022 | Aug 5, 2021 |
| Alpine Linux | — | Upgrade firefox-esrUpgrade librewolfUpgrade mozjs78Upgrade firefoxUpgrade thunderbird | Aug 22, 2024 | Aug 5, 2021 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade thunderbird-debuginfo | 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 thunderbirdUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade firefoxUpgrade firefox-debugsource | Jul 16, 2021 | Jul 15, 2021 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Jul 16, 2021 | Jul 16, 2021 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox.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 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 5, 2021 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Jul 16, 2021 | Jul 13, 2021 |
| Redhat_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-debuginfoNo solution existsUpgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfo | Jul 16, 2021 | Jul 15, 2021 |
| Rocky_linux | — | Upgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade thunderbirdUpgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | Mar 12, 2024 | Aug 5, 2021 |
| Suse | — | Upgrade mozillafirefoxUpgrade mozillafirefox-branding-upstreamUpgrade mozillafirefox-buildsymbolsUpgrade mozillafirefox-translations-commonUpgrade mozillathunderbird-translations-otherUpgrade mozillathunderbirdUpgrade mozillafirefox-develUpgrade mozillathunderbird-translations-commonUpgrade mozillafirefox-translations-other | Jul 17, 2021 | Jul 16, 2021 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Jul 17, 2021 | Jul 16, 2021 |
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