Stack buffer overflow.

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Presentation transcript:

Stack buffer overflow

Stack frame layout

#include <string.h> void foo (char *bar) { char c[12]; strcpy (c, bar); //no bound } int main (int argc, char **argv) foo(argv[1]);

#include <string.h> void foo (char *bar) { char c[12]; strcpy (c, bar); //no bound } int main (int argc, char **argv) foo(argv[1]);

#include <string.h> void foo (char *bar) { char c[12]; strcpy (c, bar); //no bound } int main (int argc, char **argv) foo(argv[1]);

Lab 3 Due next week Thursday, April 11th. Stack buffer overflow problem, very similar to what we have described today. Demo.