id: CVE-2021-40875

info:
  name: Gurock TestRail Application files.md5 Exposure
  author: oscarintherocks
  severity: high
  description: Improper access control in Gurock TestRail versions < 7.2.0.3014 resulted in sensitive information exposure. A threat actor can access the /files.md5 file on the client side of a Gurock TestRail application, disclosing a full list of application files and the corresponding file paths which can then be tested, and in some cases result in the disclosure of hardcoded credentials, API keys, or other sensitive data.
  reference:
    - htttps://github.com/SakuraSamuraii/derailed
    - https://johnjhacking.com/blog/cve-2021-40875/
    - https://www.gurock.com/testrail/tour/enterprise-edition
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40875
    - https://github.com/SakuraSamuraii/derailed
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2021-40875
    cwe-id: CWE-425
    epss-score: 0.05046
    cpe: cpe:2.3:a:gurock:testrail:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    shodan-query: http.html:"TestRail"
    vendor: gurock
    product: testrail
  tags: cve,cve2021,exposure,gurock,testrail

http:
  - method: GET
    path:
      - "{{BaseURL}}/files.md5"
      - "{{BaseURL}}/testrail/files.md5"

    stop-at-first-match: true
    max-size: 1000 # Define response size in bytes to read from server.

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "app/arguments/admin"

      - type: status
        status:
          - 200