CVE-2026-23670 Windows VBS Enclave不可信指针解引用漏洞

#include <windows.h> #include <stdio.h> // Conceptual PoC for CVE-2026-23670 // Vulnerability: Untrusted pointer dereference in Windows VBS Enclave // This code simulates the logic of dereferencing a controlled pointer. // Simulate the vulnerable VBS Enclave function void VulnerableEnclaveFunction(void* untrusted_input) { printf("[*] VBS Enclave processing input at: %p\n", untrusted_input); // FLAW: The code dereferences the pointer without validating if it points to a valid/safe memory region // In a real scenario, this could be a function pointer or a structure pointer in kernel space. int data = *(int*)untrusted_input; printf("[+] Data read: 0x%x\n", data); } int main() { printf("--- CVE-2026-23670 PoC Simulation ---\n"); // Attacker controls a memory location char attacker_controlled_buffer[4] = {0x41, 0x41, 0x41, 0x41}; // Attacker passes this pointer to the vulnerable interface // Requires High Privileges (PR:H) and Local Access (AV:L) VulnerableEnclaveFunction((void*)attacker_controlled_buffer); // If successful, the attacker might bypass security checks or leak memory printf("[!] Attempt to bypass security feature completed.\n"); return 0; }