CVE-2023-5632

    Dashboard / Vulnerabilities / CVE-2023-5632

    CVE-2023-5632

    Published: 18 Oct 2023Last Modified: 28 Oct 2026

    Summary: Unconditionally adding an event to the epoll causes excessive CPU consumption

    Details: In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5632.json, https://nvd.nist.gov/vuln/detail/CVE-2023-5632, https://github.com/eclipse/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d, https://github.com/eclipse/mosquitto/pull/2053, https://github.com/eclipse/mosquitto

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- c55424e8979c1fbc4a0a893f61f5b8f7e217f49d
    Fixed -18bad1ff32435e523d7507e9b2ce0010124a8f2d

    Affected versions

    2.0.5

    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-2023-5632 | CVE-DB