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    CVE-2021-34434

    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.

    Published:Aug 30, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 30, 2021
    EPSS Score:0.00261
    CVSS Score:5.3

    Affected Products

    Vendor
    Eclipse
    Product
    Mosquitto
    Vendor
    Fedoraproject
    Product
    Fedora

    Exploits

    https://bugs.eclipse.org/bugs/show_bug.cgi?id=575324https://bugs.eclipse.org/bugs/show_bug.cgi?id=575324

    Related CVEs

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    CVE-2023-5632 (CVSS 7.5) — In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without send…
    CVE-2023-0809 (CVSS 5.8) — In Mosquitto before 2.0.16, excessive memory is allocated based on malicious initial packets that are not CONN…
    CVE-2023-3592 (CVSS 5.8) — In Mosquitto before 2.0.16, a memory leak occurs when clients send v5 CONNECT packets with a will message that…
    CVE-2023-28366 (CVSS 7.5) — The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely …
    CVE-2021-41039 (CVSS 7.5) — In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 client connecting with a large number of user-prope…
    CVE-2021-34432 (CVSS 7.5) — In Eclipse Mosquitto versions 2.0.7 and earlier, the server will crash if the client tries to send a PUBLISH p…
    CVE-2021-34431 (CVSS 6.5) — In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a …

    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