Module: Msf::DBManager::Import::Nexpose::Raw

Included in:
Msf::DBManager::Import::Nexpose
Defined in:
lib/msf/core/db_manager/import/nexpose/raw.rb

Instance Method Summary collapse

Instance Method Details

#import_nexpose_raw_noko_stream(args, &block) ⇒ Object


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# File 'lib/msf/core/db_manager/import/nexpose/raw.rb', line 5

def import_nexpose_raw_noko_stream(args, &block)
  if block
    doc = Rex::Parser::NexposeRawDocument.new(args,framework.db) {|type, data| yield type,data }
  else
    doc = Rex::Parser::NexposeRawDocument.new(args,self)
  end
  parser = ::Nokogiri::XML::SAX::Parser.new(doc)
  parser.parse(args[:data])
end

#import_nexpose_rawxml(args = {}, &block) ⇒ Object


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# File 'lib/msf/core/db_manager/import/nexpose/raw.rb', line 15

def import_nexpose_rawxml(args={}, &block)
  bl = validate_ips(args[:blacklist]) ? args[:blacklist].split : []
  wspace = Msf::Util::DBManager.process_opts_workspace(args, framework).name
  if Rex::Parser.nokogiri_loaded
    parser = "Nokogiri v#{::Nokogiri::VERSION}"
    noko_args = args.dup
    noko_args[:blacklist] = bl
    noko_args[:workspace] = wspace
    if block
      yield(:parser, parser)
      import_nexpose_raw_noko_stream(noko_args) {|type, data| yield type,data}
    else
      import_nexpose_raw_noko_stream(noko_args)
    end
    return true
  end
  data = args[:data]

  # Use a stream parser instead of a tree parser so we can deal with
  # huge results files without running out of memory.
  parser = Rex::Parser::NexposeXMLStreamParser.new

  # Since all the Refs have to be in the database before we can use them
  # in a Vuln, we store all the hosts until we finish parsing and only
  # then put everything in the database.  This is memory-intensive for
  # large files, but should be much less so than a tree parser.
  #
  # This method is also considerably faster than parsing through the tree
  # looking for references every time we hit a vuln.
  hosts = []
  vulns = []

  # The callback merely populates our in-memory table of hosts and vulns
  parser.callback = Proc.new { |type, value|
    case type
    when :host
      # XXX: Blacklist should be checked here instead of saving a
      # host we're just going to throw away later
      hosts.push(value)
    when :vuln
      value["id"] = value["id"].downcase if value["id"]
      vulns.push(value)
    end
  }

  REXML::Document.parse_stream(data, parser)

  vuln_refs = nexpose_refs_to_struct(vulns)
  hosts.each do |host|
    if bl.include? host["addr"]
      next
    else
      yield(:address,host["addr"]) if block
    end
    nexpose_host_from_rawxml(host, vuln_refs, wspace)
  end
end

#import_nexpose_rawxml_file(args = {}) ⇒ Object

Nexpose Raw XML


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# File 'lib/msf/core/db_manager/import/nexpose/raw.rb', line 76

def import_nexpose_rawxml_file(args={})
  filename = args[:filename]

  data = ""
  ::File.open(filename, 'rb') do |f|
    data = f.read(f.stat.size)
  end
  import_nexpose_rawxml(args.merge(:data => data))
end

#nexpose_host_from_rawxml(h, vstructs, wspace, task = nil) ⇒ Object

Takes a Host object, an array of vuln structs (generated by nexpose_refs_to_struct()), and a workspace, and reports the vulns on that host.


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# File 'lib/msf/core/db_manager/import/nexpose/raw.rb', line 88

def nexpose_host_from_rawxml(h, vstructs, wspace,task=nil)
  hobj = nil
  data = {:workspace => wspace}
  if h["addr"]
    addr = h["addr"]
  else
    # Can't report it if it doesn't have an IP
    return
  end
  data[:host] = addr
  if (h["hardware-address"])
    # Put colons between each octet of the MAC address
    data[:mac] = h["hardware-address"].gsub(':', '').scan(/../).join(':')
  end
  data[:state] = (h["status"] == "alive") ? Msf::HostState::Alive : Msf::HostState::Dead

  # Since we only have one name field per host in the database, just
  # take the first one.
  if (h["names"] and h["names"].first)
    data[:name] = h["names"].first
  end

  if (data[:state] != Msf::HostState::Dead)
    hobj = report_host(data)
    report_import_note(wspace, hobj)
  end

  if h["notes"]
    note = {
        :workspace => wspace,
        :host      => (hobj || addr),
        :type      => "host.vuln.nexpose_keys",
        :data      => {},
        :mode      => :unique_data,
        :task      => task
    }
    h["notes"].each do |v,k|
      note[:data][v] ||= []
      next if note[:data][v].include? k
      note[:data][v] << k
    end
    report_note(note)
  end

  if h["os_family"]
    note = {
        :workspace => wspace,
        :host      => hobj || addr,
        :type      => 'host.os.nexpose_fingerprint',
        :task      => task,
        :data      => {
            :family    => h["os_family"],
            :certainty => h["os_certainty"]
        }
    }
    note[:data][:vendor]  = h["os_vendor"]  if h["os_vendor"]
    note[:data][:product] = h["os_product"] if h["os_product"]
    note[:data][:version] = h["os_version"] if h["os_version"]
    note[:data][:arch]    = h["arch"]       if h["arch"]

    report_note(note)
  end

  h["endpoints"].each { |p|
    extra = ""
    extra << p["product"] + " " if p["product"]
    extra << p["version"] + " " if p["version"]

    # Skip port-0 endpoints
    next if p["port"].to_i == 0

    # XXX This should probably be handled in a more standard way
    # extra << "(" + p["certainty"] + " certainty) " if p["certainty"]

    data             = {}
    data[:workspace] = wspace
    data[:proto]     = p["protocol"].downcase
    data[:port]      = p["port"].to_i
    data[:state]     = p["status"]
    data[:host]      = hobj || addr
    data[:info]      = extra if not extra.empty?
    data[:task]      = task
    if p["name"] != "<unknown>"
      data[:name] = p["name"]
    end
    report_service(data)
  }

  h["vulns"].each_pair { |k,v|

    next if v["status"] !~ /^vulnerable/
    vstruct = vstructs.select {|vs| vs.id.to_s.downcase == v["id"].to_s.downcase}.first
    next unless vstruct
    data             = {}
    data[:workspace] = wspace
    data[:host]      = hobj || addr
    data[:proto]     = v["protocol"].downcase if v["protocol"]
    data[:port]      = v["port"].to_i if v["port"]
    data[:name]      = "NEXPOSE-" + v["id"]
    data[:info]      = vstruct.title
    data[:refs]      = vstruct.refs
    data[:task]      = task
    report_vuln(data)
  }
end

#nexpose_refs_to_struct(vulns) ⇒ Object

Takes an array of vuln hashes, as returned by the NeXpose rawxml stream parser, like:

[
  "id"=>"winreg-notes-protocol-handler", severity="8", "refs"=>["source"=>"BID", "value"=>"10600", ...]
  "id"=>"windows-zotob-c", severity="8", "refs"=>["source"=>"BID", "value"=>"14513", ...]
]

and transforms it into a struct, containing :id, :refs, :title, and :severity

Other attributes can be added later, as needed.


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# File 'lib/msf/core/db_manager/import/nexpose/raw.rb', line 204

def nexpose_refs_to_struct(vulns)
  ret = []
  vulns.each do |vuln|
    next if ret.map {|v| v.id}.include? vuln["id"]
    vstruct = Struct.new(:id, :refs, :title, :severity).new
    vstruct.id = vuln["id"]
    vstruct.title = vuln["title"]
    vstruct.severity = vuln["severity"]
    vstruct.refs = []
    vuln["refs"].each do |ref|
      if ref['source'] == 'BID'
        vstruct.refs.push('BID-' + ref["value"])
      elsif ref['source'] == 'CVE'
        # value is CVE-$ID
        vstruct.refs.push(ref["value"])
      elsif ref['source'] == 'MS'
        vstruct.refs.push('MSB-' + ref["value"])
      elsif ref['source'] == 'URL'
        vstruct.refs.push('URL-' + ref["value"])
      end
    end
    ret.push vstruct
  end
  return ret
end