UBUNTU-CVE-2023-28366

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    UBUNTU-CVE-2023-28366

    Published: 1 Sept 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-28366
    Aliases:
    USN-6492-1

    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://ubuntu.com/security/CVE-2023-28366, https://mosquitto.org/blog/2023/08/version-2-0-16-released/, https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9, https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9, https://www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Eclipse_Mosquitto_Memory_Leak.txt, https://github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16, https://ubuntu.com/security/notices/USN-6492-1, https://www.cve.org/CVERecord?id=CVE-2023-28366

    Affected packages

    Package

    Name: mosquitto

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.4.3-1
    1.4.4-1
    1.4.7-1
    1.4.8-1
    1.4.8-1build1
    1.4.8-1ubuntu0.16.04.1
    1.4.8-1ubuntu0.16.04.2
    1.4.8-1ubuntu0.16.04.3
    1.4.8-1ubuntu0.16.04.4
    1.4.8-1ubuntu0.16.04.5
    1.4.8-1ubuntu0.16.04.6
    1.4.8-1ubuntu0.16.04.7
    1.4.8-1ubuntu0.16.04.7+esm1
    1.4.8-1ubuntu0.16.04.7+esm2

    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-2023-28366 | CVE-DB