Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds read or memory corruption, and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, 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 | alma-upgrade-firefoxalma-upgrade-thunderbird | May 4, 2022 | Aug 17, 2021 | |
| Alpine Linux | alpine-linux-upgrade-firefox-esralpine-linux-upgrade-firefoxalpine-linux-upgrade-thunderbirdalpine-linux-upgrade-librewolf | Aug 22, 2024 | Aug 17, 2021 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-thunderbirdamazon-linux-ami-2-upgrade-thunderbird-debuginfo | Sep 16, 2021 | Aug 17, 2021 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Aug 17, 2021 | |
| Centos_linux | — | centos-upgrade-firefoxcentos-upgrade-firefox-debuginfocentos-upgrade-firefox-debugsourcecentos-upgrade-thunderbirdcentos-upgrade-thunderbird-debuginfocentos-upgrade-thunderbird-debugsource | Aug 17, 2021 | Aug 16, 2021 |
| Debian | debian-upgrade-firefox-esrdebian-upgrade-thunderbird | Aug 13, 2021 | Aug 13, 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 17, 2021 | |
| Mfsa2021 33 | mozilla-firefox-upgrade-91_0 | Aug 12, 2021 | Aug 10, 2021 | |
| Mfsa2021 34 | mozilla-firefox-esr-upgrade-78_13 | Aug 12, 2021 | Aug 10, 2021 | |
| Mozilla Thunderbird | mozilla-thunderbird-upgrade-91_0 | Sep 16, 2021 | Aug 17, 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 17, 2021 | |
| Oracle_linux | — | oracle-linux-upgrade-firefoxoracle-linux-upgrade-thunderbird | Aug 17, 2021 | Aug 10, 2021 |
| Redhat_linux | redhat-upgrade-firefoxredhat-upgrade-firefox-debuginforedhat-upgrade-firefox-debugsourceredhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginforedhat-upgrade-thunderbird-debugsource | Aug 17, 2021 | Aug 16, 2021 | |
| Rocky_linux | rocky-upgrade-firefoxrocky-upgrade-firefox-debuginforocky-upgrade-firefox-debugsourcerocky-upgrade-thunderbirdrocky-upgrade-thunderbird-debuginforocky-upgrade-thunderbird-debugsource | May 5, 2022 | Aug 17, 2021 | |
| Suse | — | suse-upgrade-mozillafirefoxsuse-upgrade-mozillafirefox-branding-slesuse-upgrade-mozillafirefox-branding-sledsuse-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-othersuse-upgrade-rust-cbindgen | Aug 13, 2021 | Aug 11, 2021 |
| Ubuntu | ubuntu-upgrade-firefoxubuntu-upgrade-thunderbird | Aug 12, 2021 | Aug 11, 2021 |
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