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    CVE-2023-31421

    It was discovered that when acting as TLS clients, Beats, Elastic Agent, APM Server, and Fleet Server did not verify whether the server certificate is valid for the target IP address; however, certificate signature validation is still performed. More specifically, when the client is configured to connect to an IP address (instead of a hostname) it does not validate the server certificate's IP SAN values against that IP address and certificate validation fails, and therefore the connection is not blocked as expected.

    Published:Oct 26, 2023
    Last Modified:Nov 21, 2024
    EPS:Oct 26, 2023
    EPSS Score:0.00093
    CVSS Score:5.9

    Affected Products

    Vendor
    Elastic
    Product
    Apm Server
    Vendor
    Elastic
    Product
    Elastic Agent
    Vendor
    Elastic
    Product
    Elastic Beats
    Vendor
    Elastic
    Product
    Elastic Fleet Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

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    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