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 | alma-upgrade-firefoxalma-upgrade-thunderbird | May 4, 2022 | Aug 5, 2021 | |
| Alpine Linux | alpine-linux-upgrade-firefox-esralpine-linux-upgrade-mozjs78alpine-linux-upgrade-firefoxalpine-linux-upgrade-thunderbirdalpine-linux-upgrade-librewolf | Aug 22, 2024 | Aug 5, 2021 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-thunderbirdamazon-linux-ami-2-upgrade-thunderbird-debuginfo | Sep 16, 2021 | Aug 5, 2021 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Aug 5, 2021 | |
| Centos_linux | — | centos-upgrade-firefoxcentos-upgrade-firefox-debuginfocentos-upgrade-firefox-debugsourcecentos-upgrade-thunderbirdcentos-upgrade-thunderbird-debuginfocentos-upgrade-thunderbird-debugsource | Jul 16, 2021 | Jul 15, 2021 |
| Debian | debian-upgrade-firefox-esrdebian-upgrade-thunderbird | Jul 16, 2021 | Jul 16, 2021 | |
| Gentoo Linux | gentoo-linux-upgrade-mail-client-thunderbirdgentoo-linux-upgrade-mail-client-thunderbird-bingentoo-linux-upgrade-www-client-firefoxgentoo-linux-upgrade-www-client-firefox-bin | Feb 22, 2022 | Aug 5, 2021 | |
| Mfsa2021 28 | mozilla-firefox-upgrade-90_0 | Jul 14, 2021 | Jul 13, 2021 | |
| Mfsa2021 29 | mozilla-firefox-esr-upgrade-78_12 | Jul 14, 2021 | Jul 13, 2021 | |
| Mozilla Thunderbird | mozilla-thunderbird-upgrade-78_12 | Jul 14, 2021 | Jul 13, 2021 | |
| Oracle Solaris | oracle-solaris-11-4-upgrade-mail-thunderbird-78-14-0-11-4-38-0-1-101-3oracle-solaris-11-4-upgrade-web-browser-firefox-78-14-0-11-4-38-0-1-101-3oracle-solaris-11-4-upgrade-web-data-firefox-bookmarks-78-14-0-11-4-38-0-1-101-3 | Nov 17, 2021 | Aug 5, 2021 | |
| Oracle_linux | — | oracle-linux-upgrade-firefoxoracle-linux-upgrade-thunderbird | Jul 16, 2021 | Jul 13, 2021 |
| Redhat_linux | redhat-upgrade-firefoxredhat-upgrade-firefox-debuginforedhat-upgrade-firefox-debugsourceredhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginforedhat-upgrade-thunderbird-debugsource | Jul 16, 2021 | Jul 15, 2021 | |
| Rocky_linux | rocky-upgrade-firefoxrocky-upgrade-firefox-debuginforocky-upgrade-firefox-debugsourcerocky-upgrade-thunderbirdrocky-upgrade-thunderbird-debuginforocky-upgrade-thunderbird-debugsource | Mar 12, 2024 | Aug 5, 2021 | |
| Suse | — | suse-upgrade-mozillafirefoxsuse-upgrade-mozillafirefox-branding-upstreamsuse-upgrade-mozillafirefox-buildsymbolssuse-upgrade-mozillafirefox-develsuse-upgrade-mozillafirefox-translations-commonsuse-upgrade-mozillafirefox-translations-othersuse-upgrade-mozillathunderbirdsuse-upgrade-mozillathunderbird-translations-commonsuse-upgrade-mozillathunderbird-translations-other | Jul 17, 2021 | Jul 16, 2021 |
| Ubuntu | ubuntu-upgrade-firefoxubuntu-upgrade-thunderbird | Jul 17, 2021 | Jul 16, 2021 |
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