/* goodB2G() - use BadSource and GoodSink */ private static void GoodB2G() { int data; data = int.MinValue; /* Initialize data */ /* get environment variable ADD */ /* POTENTIAL FLAW: Read data from an environment variable */ { string stringNumber = Environment.GetEnvironmentVariable("ADD"); if (stringNumber != null) // avoid NPD incidental warnings { try { data = int.Parse(stringNumber.Trim()); } catch (FormatException exceptNumberFormat) { IO.Logger.Log(NLog.LogLevel.Warn, exceptNumberFormat, "Number format exception parsing data from string"); } } } Dictionary <int, int> dataDictionary = new Dictionary <int, int>(); dataDictionary.Add(0, data); dataDictionary.Add(1, data); dataDictionary.Add(2, data); CWE191_Integer_Underflow__int_Environment_sub_74b.GoodB2GSink(dataDictionary); }
/* goodG2B() - use GoodSource and BadSink */ private static void GoodG2B() { int data; /* FIX: Use a hardcoded number that won't cause underflow, overflow, divide by zero, or loss-of-precision issues */ data = 2; Dictionary <int, int> dataDictionary = new Dictionary <int, int>(); dataDictionary.Add(0, data); dataDictionary.Add(1, data); dataDictionary.Add(2, data); CWE191_Integer_Underflow__int_Environment_sub_74b.GoodG2BSink(dataDictionary); }