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    CVE-2019-18802

    An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat "header-value " as a different string from "header-value" so for example with the Host header "example.com " one could bypass "example.com" matchers.

    Published:Dec 10, 2019
    Last Modified:Nov 21, 2024
    EPS:Dec 13, 2019
    EPSS Score:0.00045
    CVSS Score:9.8

    Affected Products

    Vendor
    Envoyproxy
    Product
    Envoy
    Vendor
    Redhat
    Product
    Service Mesh

    Exploits

    https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    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