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    CVE-2021-34431

    In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.

    Published:Jul 22, 2021
    Last Modified:Nov 21, 2024
    EPS:Jul 22, 2021
    EPSS Score:0.00305
    CVSS Score:6.5

    Affected Products

    Vendor
    Eclipse
    Product
    Mosquitto

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2024-3935 (CVSS 6) — In Eclipse Mosquito, versions from 2.0.0 through 2.0.18, if a Mosquitto broker is configured to create an outg…
    CVE-2024-10525 (CVSS 7.2) — In Eclipse Mosquitto, from version 1.3.2 through 2.0.18, if a malicious broker sends a crafted SUBACK packet w…
    CVE-2024-8376 (CVSS 7.2) — In Eclipse Mosquitto up to version 2.0.18a, an attacker can achieve memory leaking, segmentation fault or heap…
    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-2021-34434 (CVSS 5.3) — In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the dynamic security plugin, if the ability for a clie…
    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…

    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