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    CVE-2019-18838

    An issue was discovered in Envoy 1.12.0. Upon receipt of a malformed HTTP request without a Host header, it sends an internally generated "Invalid request" response. This internally generated response is dispatched through the configured encoder filter chain before being sent to the client. An encoder filter that invokes route manager APIs that access a request's Host header causes a NULL pointer dereference, resulting in abnormal termination of the Envoy process.

    Published:Dec 10, 2019
    Last Modified:Nov 21, 2024
    EPS:Dec 13, 2019
    EPSS Score:0.00099
    CVSS Score:7.5

    Affected Products

    Vendor
    Envoyproxy
    Product
    Envoy
    Vendor
    Redhat
    Product
    Service Mesh

    Exploits

    https://github.com/envoyproxy/envoy/security/advisories/GHSA-f2rv-4w6x-rwhchttps://github.com/envoyproxy/envoy/security/advisories/GHSA-f2rv-4w6x-rwhc

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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