public override void Bad() { long data; data = long.MinValue; /* Initialize data */ /* get environment variable ADD */ /* FLAW: Read data from an environment variable */ { string stringNumber = Environment.GetEnvironmentVariable("ADD"); if (stringNumber != null) // avoid NPD incidental warnings { try { data = long.Parse(stringNumber.Trim()); } catch (FormatException exceptNumberFormat) { IO.Logger.Log(NLog.LogLevel.Warn, exceptNumberFormat, "Number format exception parsing data from string"); } } } /* serialize data to a byte array */ byte[] dataSerialized = null; try { BinaryFormatter bf = new BinaryFormatter(); using (var ms = new MemoryStream()) { bf.Serialize(ms, data); dataSerialized = ms.ToArray(); } CWE197_Numeric_Truncation_Error__long_Environment_to_int_75b.BadSink(dataSerialized); } catch (SerializationException exceptSerialize) { IO.Logger.Log(NLog.LogLevel.Warn, "Serialization exception in serialization", exceptSerialize); } }
/* goodG2B() - use goodsource and badsink */ private static void GoodG2B() { long data; /* FIX: Use a hardcoded number that won't cause underflow, overflow, divide by zero, or loss-of-precision issues */ data = 2; /* serialize data to a byte array */ byte[] dataSerialized = null; try { BinaryFormatter bf = new BinaryFormatter(); using (var ms = new MemoryStream()) { bf.Serialize(ms, data); dataSerialized = ms.ToArray(); } CWE197_Numeric_Truncation_Error__long_Environment_to_int_75b.GoodG2BSink(dataSerialized); } catch (SerializationException exceptSerialize) { IO.Logger.Log(NLog.LogLevel.Warn, "Serialization exception in serialization", exceptSerialize); } }