/* goodG2B() - use GoodSource and BadSink */ private static void GoodG2B() { string data; /* FIX: Use a hardcoded string */ data = "foo"; LinkedList <string> dataLinkedList = new LinkedList <string>(); dataLinkedList.AddLast(data); dataLinkedList.AddLast(data); dataLinkedList.AddLast(data); CWE134_Externally_Controlled_Format_String__Listen_tcp_Format_73b.GoodG2BSink(dataLinkedList); }
public override void Bad() { string data; data = ""; /* Initialize data */ /* Read data using a listening tcp connection */ { TcpListener listener = null; try { listener = new TcpListener(IPAddress.Parse("10.10.1.10"), 39543); listener.Start(); using (TcpClient tcpConn = listener.AcceptTcpClient()) { /* read input from socket */ using (StreamReader sr = new StreamReader(tcpConn.GetStream())) { /* POTENTIAL FLAW: Read data using a listening tcp connection */ data = sr.ReadLine(); } } } catch (IOException exceptIO) { IO.Logger.Log(NLog.LogLevel.Warn, exceptIO, "Error with stream reading"); } finally { if (listener != null) { try { listener.Stop(); } catch (SocketException se) { IO.Logger.Log(NLog.LogLevel.Warn, se, "Error closing TcpListener"); } } } } LinkedList <string> dataLinkedList = new LinkedList <string>(); dataLinkedList.AddLast(data); dataLinkedList.AddLast(data); dataLinkedList.AddLast(data); CWE134_Externally_Controlled_Format_String__Listen_tcp_Format_73b.BadSink(dataLinkedList); }