A malicious extension could have called <code>browser.identity.launchWebAuthFlow</code>, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider. This vulnerability affects Firefox < 75.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-firefoxalpine-linux-upgrade-librewolf | Aug 22, 2024 | Apr 24, 2020 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Apr 24, 2020 | |
| Gentoo Linux | gentoo-linux-upgrade-www-client-firefoxgentoo-linux-upgrade-www-client-firefox-bin | Apr 24, 2020 | Apr 23, 2020 | |
| Mfsa2020 12 | mozilla-firefox-upgrade-75_0 | Apr 8, 2020 | Apr 7, 2020 | |
| Redhat_linux | no-fix-redhat-rpm-package | Jul 9, 2025 | Apr 24, 2020 | |
| Ubuntu | ubuntu-upgrade-firefox | Apr 8, 2020 | Apr 7, 2020 |
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