If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater.exe from the install location with system privileges. Although the Mozilla Maintenance Service does ensure that updater.exe is signed by Mozilla, the version could have been rolled back to a previous version which would have allowed exploitation of an older bug and arbitrary code execution with System Privileges. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, and Firefox ESR < 78.2.
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 | — | Upgrade firefox-esrUpgrade librewolfUpgrade firefoxUpgrade thunderbird | Aug 22, 2024 | Oct 1, 2020 |
| Mfsa2020 36 | — | Upgrade to Mozilla Firefox version 80.0 | Aug 26, 2020 | Aug 25, 2020 |
| Mfsa2020 37 | — | Upgrade to Mozilla Firefox ESR version 68.12 | Aug 26, 2020 | Aug 25, 2020 |
| Mfsa2020 38 | — | Upgrade to Mozilla Firefox ESR version 78.2 | Aug 26, 2020 | Aug 25, 2020 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 78.2 | Aug 27, 2020 | Aug 25, 2020 |
| Oracle Solaris | — | Upgrade SUNWthunderbird-calendar to version 0.5.11-11.4.27.0.1.82.0 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 68.12.0-11.4.26.0.1.75.2 on Solaris 11.4Upgrade mail/thunderbird to version 68.12.0-11.4.26.0.1.75.2 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 68.12.0-11.4.26.0.1.75.2 on Solaris 11.4Upgrade web/browser/firefox to version 68.12.0-11.4.26.0.1.75.2 on Solaris 11.4Upgrade mail/thunderbird/plugin/plugin-lightning to version 0.5.11-11.4.27.0.1.82.0 on Solaris 11.4 | Jan 19, 2021 | Oct 1, 2020 |
| Suse | — | Upgrade mozillafirefox-develUpgrade mozillafirefox-buildsymbolsUpgrade mozillathunderbirdUpgrade mozillafirefox-branding-upstreamUpgrade mozillathunderbird-translations-otherUpgrade mozillafirefox-translations-commonUpgrade mozillafirefox-translations-otherUpgrade mozillathunderbird-translations-commonUpgrade mozillafirefox | Sep 5, 2020 | Sep 4, 2020 |
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