Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. 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 ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
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 | Mar 31, 2021 |
| Alpine Linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade mozjs78Upgrade firefox-esrUpgrade librewolf | Jun 17, 2022 | Mar 31, 2021 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade thunderbird-debuginfo | Apr 23, 2021 | Mar 31, 2021 |
| Centos_linux | — | Upgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox-debuginfo | Mar 26, 2021 | Mar 25, 2021 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Mar 26, 2021 | Mar 26, 2021 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox.Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin. | May 3, 2021 | Mar 31, 2021 |
| Mfsa2021 10 | — | Upgrade to Mozilla Firefox version 87.0Upgrade to the latest version of Mozilla Firefox | Mar 24, 2021 | Mar 23, 2021 |
| Mfsa2021 11 | — | Upgrade to Mozilla Firefox ESR version 78.9Upgrade to the latest version of Mozilla Firefox | Mar 24, 2021 | Mar 23, 2021 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 78.9Upgrade to the latest version of Mozilla Thunderbird | Mar 24, 2021 | Mar 23, 2021 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 78.9.0-11.4.32.0.1.88.3 on Solaris 11.4Upgrade mail/thunderbird to version 78.9.0-11.4.32.0.1.88.3 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 78.9.0-11.4.32.0.1.88.3 on Solaris 11.4 | Apr 21, 2021 | Mar 31, 2021 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Mar 26, 2021 | Mar 23, 2021 |
| Redhat_linux | — | Upgrade firefox-debugsourceNo solution existsUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade thunderbirdUpgrade firefox | Mar 26, 2021 | Mar 25, 2021 |
| Suse | — | Upgrade mozillafirefox-buildsymbolsUpgrade MozillaThunderbird-translations-commonUpgrade mozillafirefox-branding-upstreamUpgrade mozillafirefox-branding-sleUpgrade MozillaFirefox-develUpgrade MozillaFirefoxUpgrade MozillaThunderbirdUpgrade mozilla-nspr-develUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-translations-otherUpgrade mozilla-nspr-32bitUpgrade mozilla-nspr | Mar 31, 2021 | Mar 25, 2021 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Mar 26, 2021 | Mar 25, 2021 |
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