VulnerabilityModified
CVE-2021-29959
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.
MEDIUM 4.3EPSS 0.84%
Does this matter?
Lower severity and a low EPSS score (0.84%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- EPSS
- 0.84% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1395819Issue Tracking, Permissions Required, Vendor Advisory
- https://security.gentoo.org/glsa/202107-09Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-23/Release Notes, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1395819Issue Tracking, Permissions Required, Vendor Advisory
- https://security.gentoo.org/glsa/202107-09Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-23/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.