UBUNTU-CVE-2021-24000

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    UBUNTU-CVE-2021-24000

    Published: 19 Apr 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-24000
    Aliases:
    USN-4926-1

    Summary:

    Details: A race condition with requestPointerLock() and setTimeout() could have resulted in a user interacting with one tab when they believed they were on a separate tab. In conjunction with certain elements (such as &lt;input type="file"&gt;) this could have led to an attack where a user was confused about the origin of the webpage and potentially disclosed information they did not intend to. This vulnerability affects Firefox < 88.

    References: https://ubuntu.com/security/CVE-2021-24000, https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-24000, https://ubuntu.com/security/notices/USN-4926-1, https://www.cve.org/CVERecord?id=CVE-2021-24000

    Affected packages

    Package

    Name: firefox

    Purl: pkg:deb/ubuntu/[email protected]+build2-0ubuntu0.16.04.1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -88.0+build2-0ubuntu0.16.04.1

    Affected versions

    41.0.2+build2-0ubuntu1

    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-2021-24000 | CVE-DB