The program copies an input buffer to an output buffer without
					verifying that the size of the input buffer is less than the size of the output
					buffer, leading to a buffer overflow.A buffer overflow condition exists when a program attempts to put more
						data in a buffer than it can hold, or when a program attempts to put data in
						a memory area outside of the boundaries of a buffer. The simplest type of
						error, and the most common cause of buffer overflows, is the "classic" case
						in which the program copies the buffer without restricting how much is
						copied. Other variants exist, but the existence of a classic overflow
						strongly suggests that the programmer is not considering even the most basic
						of security protections.