CVE-2026-32170 Windows富文本编辑控件双重释放漏洞

#include <windows.h> #include <richedit.h> #include <stdio.h> // Proof of Concept for CVE-2026-32170 (Double Free) // This code simulates the vulnerability condition. // In a real scenario, specific RTF stream manipulation is required. void trigger_vulnerability() { // Simulate the vulnerable object allocation in Rich Edit Control LPVOID pMem = HeapAlloc(GetProcessHeap(), 0, 0x100); if (pMem) { printf("[*] Memory allocated at: %p\n", pMem); // First free (Legitimate release by the control) HeapFree(GetProcessHeap(), 0, pMem); printf("[*] Memory freed first time.\n"); // Second free (Triggered by crafted input) // This causes the Double Free vulnerability HeapFree(GetProcessHeap(), 0, pMem); printf("[*] Memory freed second time (CRASH/CORRUPTION).\n"); } } int main() { // Note: Actual exploitation requires sending specific EM_STREAMIN messages // with crafted RTF data to trigger the double free logic inside the DLL. LoadLibrary("Msftedit.dll"); // This C snippet demonstrates the generic Double Free mechanic. trigger_vulnerability(); return 0; }