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30 lines
625 B
C
30 lines
625 B
C
/* stack.c */
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/* This is the program that introduces the buffer overflow vulnerability. */
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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int bof(char *str)
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{
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char buffer[12];
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/* Can you spot the buffer overflow here? ;-) */
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strcpy(buffer, str);
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return 1;
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}
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int main(int argc, char **argv)
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{
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/* This tries to handle 517 bytes and the strcpy is trying to copy that to buffer which only has 12 bytes */
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char str[517];
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FILE *badfile;
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badfile = fopen("badfile", "r");
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fread(str, sizeof(char), 517, badfile);
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bof(str);
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printf("Returned Properly\n");
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return 1;
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} |