> fgets(buf,40,stdin);
> if ( strncmp(buf2, "go", 2) == 0 )
> {
> printf("Good Skill!\n");
> setreuid( 3010, 3010 );
> system("/bin/bash");
> }
>
>À̺κÐÀ» º¸½Ã¸é buf ¿¡ ÀԷ¹޴µ¥ buf2 ¿¡¼ "go" °¡ ÀÖ´ÂÁö üũÇÏ°í
>
>ÀÖÀ¸¸é level10±ÇÇÑ¿¡ ½©À» ¶ç¿öÁÝ´Ï´Ù.
>
>buf °¡ ³ÑÄ¡¸é buf2 ·Î °©´Ï´Ù.
>
>±×·¯´Ï go ¸¦ overwrite ÇϽøé
>
>--------------------------------
>| buf | buf2 |
>| gogogogogogogogogogogogogogo |
>--------------------------------
>
>ÀÌ·±½ÄÀ¸·Î ³ÑÄ¡°Ô µË´Ï´Ù.
|