/* goodG2B() - use goodsource and badsink */ private static void GoodG2B() { ushort data = CWE190_Integer_Overflow__UInt16_rand_multiply_61b.GoodG2BSource(); if (data > 0) /* ensure we won't have an underflow */ { /* POTENTIAL FLAW: if (data*2) > ushort.MaxValue, this will overflow */ ushort result = (ushort)(data * 2); IO.WriteLine("result: " + result); } }
/* goodB2G() - use badsource and goodsink */ private static void GoodB2G() { ushort data = CWE190_Integer_Overflow__UInt16_rand_multiply_61b.GoodB2GSource(); if (data > 0) /* ensure we won't have an underflow */ { /* FIX: Add a check to prevent an overflow from occurring */ if (data < (ushort.MaxValue / 2)) { ushort result = (ushort)(data * 2); IO.WriteLine("result: " + result); } else { IO.WriteLine("data value is too large to perform multiplication."); } } }