vulnerability

MFSA2021-23 Firefox: Security Vulnerabilities fixed in Firefox 89 (CVE-2021-29959)

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Severity

CVSS

(AV:N/AC:M/Au:N/C:N/I:P/A:N)

Published

Jun 1, 2021

Added

Jun 2, 2021

Modified

Mar 27, 2026

Description

When a user has already allowed a website to access microphone and camera, disabling camera sharing would not fully prevent the website from re-enabling it without an additional prompt. This was only possible if the website kept recording with the microphone until re-enabling the camera. This vulnerability affects Firefox < 89.

Solution

mozilla-firefox-upgrade-89_0

References

CVE-2021-29959
https://attackerkb.com/topics/CVE-2021-29959
CWE-863
EUVD-EUVD-2021-16418
http://www.mozilla.org/security/announce/2021/mfsa2021-23.html
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-16418

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