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    CVE-2021-31921

    Istio before 1.8.6 and 1.9.x before 1.9.5 contains a remotely exploitable vulnerability where an external client can access unexpected services in the cluster, bypassing authorization checks, when a gateway is configured with AUTO_PASSTHROUGH routing configuration.

    Published:May 11, 2021
    Last Modified:Nov 21, 2024
    EPS:Jun 2, 2021
    EPSS Score:0.00209
    CVSS Score:9.8

    Affected Products

    Vendor
    Istio
    Product
    Istio
    Vendor
    Redhat
    Product
    Service Mesh

    Exploits

    https://istio.io/latest/news/security/istio-security-2021-006/https://istio.io/latest/news/security/istio-security-2021-006/

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

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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