A return$-$to$-$libc attack to an $86$ binary program requires three

components $1)$ the address of function system; $2)$ the address

of a string to a shell command $($such as $"/$bin$/$sh$")$; and $3)$ the

address of function exit. Check each of the following

questions.

When implemented by including the three components in a

buffer that can be over flown, the order of the three

components in the buffer $($from first to last$)$ would be $1)3)2).$

The address of function exit is required in order to get a shell.

AlJ the addresses need to be written in the buffer in the little

endian format.