Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. 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 Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
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 |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-firefox-esralpine-linux-upgrade-firefoxalpine-linux-upgrade-librewolfalpine-linux-upgrade-thunderbird | Aug 22, 2024 | Oct 1, 2020 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-thunderbirdamazon-linux-ami-2-upgrade-thunderbird-debuginfo | Dec 10, 2020 | Oct 1, 2020 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Oct 1, 2020 | |
| Centos_linux | — | centos-upgrade-firefoxcentos-upgrade-firefox-debuginfocentos-upgrade-firefox-debugsourcecentos-upgrade-thunderbirdcentos-upgrade-thunderbird-debuginfocentos-upgrade-thunderbird-debugsource | Sep 25, 2020 | Sep 24, 2020 |
| Debian | debian-upgrade-firefox-esrdebian-upgrade-thunderbird | Sep 30, 2020 | Sep 30, 2020 | |
| 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 | Oct 19, 2020 | Oct 1, 2020 | |
| Mfsa2020 42 | mozilla-firefox-upgrade-81_0 | Sep 23, 2020 | Sep 22, 2020 | |
| Mfsa2020 43 | mozilla-firefox-esr-upgrade-78_3 | Sep 23, 2020 | Sep 22, 2020 | |
| Mozilla Thunderbird | mozilla-thunderbird-upgrade-78_3 | Sep 25, 2020 | Sep 22, 2020 | |
| Oracle Solaris | oracle-solaris-11-4-upgrade-mail-thunderbird-78-3-0-11-4-27-0-1-82-0oracle-solaris-11-4-upgrade-web-browser-firefox-78-3-0-11-4-27-0-1-82-0oracle-solaris-11-4-upgrade-web-data-firefox-bookmarks-78-3-0-11-4-27-0-1-82-0 | Jan 19, 2021 | Oct 1, 2020 | |
| Oracle_linux | — | oracle-linux-upgrade-firefoxoracle-linux-upgrade-thunderbird | Sep 25, 2020 | Sep 22, 2020 |
| Redhat_linux | redhat-upgrade-firefoxredhat-upgrade-firefox-debuginforedhat-upgrade-firefox-debugsourceredhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginforedhat-upgrade-thunderbird-debugsource | Sep 25, 2020 | Sep 24, 2020 | |
| Suse | — | suse-upgrade-mozilla-nsprsuse-upgrade-mozilla-nspr-32bitsuse-upgrade-mozilla-nspr-develsuse-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 | Sep 29, 2020 | Sep 24, 2020 |
| Ubuntu | ubuntu-upgrade-firefox | Sep 29, 2020 | Sep 24, 2020 |
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