If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in a way that was unnoticable to the user. This would have allowed a remote attacker (able to make a direct network connection to the victim) to monitor the user's browsing activity and (plaintext) network traffic. This was addressed by providing a visual cue when Devtools has an open network socket. This vulnerability affects Firefox < 87.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefoxUpgrade librewolf | Aug 22, 2024 | Mar 31, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | May 3, 2021 | Mar 31, 2021 |
| Mfsa2021 10 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 87.0 | Mar 24, 2021 | Mar 23, 2021 |
| Ubuntu | — | Upgrade firefox | Mar 26, 2021 | Mar 25, 2021 |
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