UBUNTU-CVE-2021-29959

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    UBUNTU-CVE-2021-29959

    Published: 2 Jun 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-29959
    Aliases:
    USN-4978-1

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2021-29959, https://www.mozilla.org/en-US/security/advisories/mfsa2021-23/#CVE-2021-29959, https://ubuntu.com/security/notices/USN-4978-1, https://www.cve.org/CVERecord?id=CVE-2021-29959

    Affected packages

    Package

    Name: firefox

    Purl: pkg:deb/ubuntu/[email protected]+build2-0ubuntu0.18.04.2?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -89.0+build2-0ubuntu0.18.04.2

    Affected versions

    56.0+build6-0ubuntu1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2021-29959 | CVE-DB