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    CVE-2022-23652

    capsule-proxy is a reverse proxy for Capsule Operator which provides multi-tenancy in Kubernetes. In versions prior to 0.2.1 an attacker with a proper authentication mechanism may use a malicious `Connection` header to start a privilege escalation attack towards the Kubernetes API Server. This vulnerability allows for an exploit of the `cluster-admin` Role bound to `capsule-proxy`. There are no known workarounds for this issue.

    Published:Feb 22, 2022
    Last Modified:Apr 22, 2025
    EPS:Feb 22, 2022
    EPSS Score:0.00385
    CVSS Score:8.8

    Affected Products

    Vendor
    Clastix
    Product
    Capsule-proxy

    Exploits

    https://github.com/clastix/capsule-proxy/issues/188https://github.com/clastix/capsule-proxy/issues/188

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    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