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    CVE-2020-15166

    In ZeroMQ before version 4.3.3, there is a denial-of-service vulnerability. Users with TCP transport public endpoints, even with CURVE/ZAP enabled, are impacted. If a raw TCP socket is opened and connected to an endpoint that is fully configured with CURVE/ZAP, legitimate clients will not be able to exchange any message. Handshakes complete successfully, and messages are delivered to the library, but the server application never receives them. This is patched in version 4.3.3.

    Published:Sep 7, 2020
    Last Modified:Nov 21, 2024
    EPS:Sep 11, 2020
    EPSS Score:0.00965
    CVSS Score:7.5

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Zeromq
    Product
    Libzmq

    Exploits

    No exploit reference

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    References

    https://github.com/zeromq/libzmq/pull/3913
    https://github.com/zeromq/libzmq/pull/3973
    https://github.com/zeromq/libzmq/security/advisories/GHSA-25wp-cf8g-938m
    https://lists.debian.org/debian-lts-announce/2020/11/msg00017.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZ5IMNQXDB52JFBXHFLK4AHVORFELNNG/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YFW2ZELCCPS4VLU4OSJOH5YL6KFKTFYW/
    https://security.gentoo.org/glsa/202009-12
    https://github.com/zeromq/libzmq/pull/3913
    https://github.com/zeromq/libzmq/pull/3973
    https://github.com/zeromq/libzmq/security/advisories/GHSA-25wp-cf8g-938m
    https://lists.debian.org/debian-lts-announce/2020/11/msg00017.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZ5IMNQXDB52JFBXHFLK4AHVORFELNNG/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YFW2ZELCCPS4VLU4OSJOH5YL6KFKTFYW/
    https://security.gentoo.org/glsa/202009-12

    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