adding buffer overflow examples

buffer_overflow_example/demeter/stack.c

@@ -0,0 +1,29 @@
+/* stack.c */
+
+/* This is the program that introduces the buffer overflow vulnerability. */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+int bof(char *str)
+{
+    char buffer[12];
+
+    /* Can you spot the buffer overflow here? ;-) */ 
+    strcpy(buffer, str);
+
+    return 1;
+}
+
+int main(int argc, char **argv)
+{
+    char str[517];
+    FILE *badfile;
+
+    badfile = fopen("badfile", "r");
+    fread(str, sizeof(char), 517, badfile);
+    bof(str);
+
+    printf("Returned Properly\n");
+    return 1;
+}