UBUNTU-CVE-2020-27839

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    UBUNTU-CVE-2020-27839

    Published: 26 May 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-27839
    Aliases:
    USN-4998-1

    Summary:

    Details: A flaw was found in ceph-dashboard. The JSON Web Token (JWT) used for user authentication is stored by the frontend application in the browser’s localStorage which is potentially vulnerable to attackers via XSS attacks. The highest threat from this vulnerability is to data confidentiality and integrity.

    References: https://ubuntu.com/security/CVE-2020-27839, https://github.com/ceph/ceph/pull/38259, https://ubuntu.com/security/notices/USN-4998-1, https://www.cve.org/CVERecord?id=CVE-2020-27839

    Affected packages

    Package

    Name: ceph

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -15.2.12-0ubuntu0.20.04.1

    Affected versions

    14.2.2-0ubuntu3
    14.2.2-0ubuntu4
    14.2.4-0ubuntu1
    14.2.4-0ubuntu2
    14.2.4-0ubuntu3

    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-2020-27839 | CVE-DB