A Question in Computer Security............................................

void greet (char *arg) { char buffer [16]: printf("I am the Senate. What is your name? "): scanf("% s", buffer): printf("It's treason then, %s ", buffer): } int main(int argc, char *argv[]) { char beg [6] = 'Kenobi': char end [9] = 'maybe not?': strncat(beg, end, 5): greet(argv[1]): return 0: } What is the line number that has a memory vulnerability and what is this vulnerability called? Just before the program executes line 4, the registers are: % esp: 0xBFFFFB20 %ebp: 0xBFFFFB48 Given this information, describe in detail how an attacker would take advantage of the vulnerability. Also make sure to include the address that the attacker needs to over-write. (Maximum 5 sentences) What would you change to fix the problem in part 1? Given the code as is, would stack canaries prevent exploitation of this vulnerability? Why or why not