CVE-2023-28366

    Dashboard / Vulnerabilities / CVE-2023-28366

    CVE-2023-28366

    Published: 1 Sept 2023Last Modified: 27 Aug 2026

    Summary:

    Details: The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.

    References: https://github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16, https://www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Eclipse_Mosquitto_Memory_Leak.txt, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28366.json, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJ2FMBGVVQEQWTTQB7YLKTAHMX2UM66X/, https://nvd.nist.gov/vuln/detail/CVE-2023-28366, https://security.gentoo.org/glsa/202401-09, https://www.debian.org/security/2023/dsa-5511, https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9, https://mosquitto.org/blog/2023/08/version-2-0-16-released/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- aa86554592d0f647b81b13f2261de9e0a1db328b
    Fixed -9e0831b3ed87f9b9a60a01f74040a077f40946c4

    Affected versions

    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
    CVE-2023-28366 | CVE-DB