UBUNTU-CVE-2021-34434

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    UBUNTU-CVE-2021-34434

    Published: 30 Aug 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-34434
    Aliases:
    USN-6492-1

    Summary:

    Details: In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the dynamic security plugin, if the ability for a client to make subscriptions on a topic is revoked when a durable client is offline, then existing subscriptions for that client are not revoked.

    References: https://ubuntu.com/security/CVE-2021-34434, https://bugs.eclipse.org/bugs/show_bug.cgi?id=575324, https://ubuntu.com/security/notices/USN-6492-1, https://www.cve.org/CVERecord?id=CVE-2021-34434

    Affected packages

    Package

    Name: mosquitto

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0.11-1ubuntu1.1

    Affected versions

    2.0.11-1
    2.0.11-1build1
    2.0.11-1ubuntu1

    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-2021-34434 | CVE-DB