Module: Msf::DBManager::Import::MetasploitFramework

Includes:
Credential, XML, Zip
Included in:
Msf::DBManager::Import
Defined in:
lib/msf/core/db_manager/import/metasploit_framework.rb

Defined Under Namespace

Modules: Credential, XML, Zip

Constant Summary

Constants included from XML

XML::MSF_WEB_PAGE_TEXT_ELEMENT_NAMES, XML::MSF_WEB_TEXT_ELEMENT_NAMES, XML::MSF_WEB_VULN_TEXT_ELEMENT_NAMES

Instance Method Summary collapse

Methods included from Zip

#import_msf_collateral, #import_msf_zip, #is_child_of?, #parse_zip_host, #parse_zip_loot, #parse_zip_report, #parse_zip_task

Methods included from XML

#import_msf_file, #import_msf_note_element, #import_msf_web_form_element, #import_msf_web_page_element, #import_msf_web_vuln_element, #import_msf_xml

Methods included from Credential

#import_msf_cred_dump, #import_msf_cred_dump_zip, #import_msf_pwdump

Instance Method Details

#nils_for_nulls(str) ⇒ Object

Convert the string “NULL” to actual nil

Parameters:

  • str (String) 


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# File 'lib/msf/core/db_manager/import/metasploit_framework.rb', line 14

def nils_for_nulls(str)
  str == "NULL" ? nil : str
end

#unserialize_object(xml_elem, allow_yaml = false) ⇒ Object 



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# File 'lib/msf/core/db_manager/import/metasploit_framework.rb', line 18

def unserialize_object(xml_elem, allow_yaml = false)
  return nil unless xml_elem
  string = xml_elem.text.to_s.strip
  return string unless string.is_a?(String)
  return nil if (string.empty? || string.nil?)

  begin

    # Validate that it is properly formed base64 first
    if string.gsub(/\s+/, '') =~ /^([a-z0-9A-Z\+\/=]+)$/
      marshalled_data = $1.unpack("m")[0]

      # Only attempt Marshal deserialization if the decoded data
      # starts with the Marshal version header (4.8). Otherwise
      # treat it as a plain string that happened to be base64-like.
      if Msf::DBManager::Import::MarshalValidator.marshalled_data?(marshalled_data)
        Msf::DBManager::Import::MarshalValidator.safe_load(marshalled_data, permitted_classes: %w[Time])
      else
        string
      end
    else
      if allow_yaml
        begin
          YAML.safe_load(string, permitted_classes: MetasploitDataModels::YAML::PERMITTED_CLASSES)
        rescue
          dlog("Badly formatted YAML: '#{string}'")
          string
        end
      else
        string
      end
    end
  rescue Msf::DBManager::Import::MarshalValidationError => e
    # Marshal validation failure indicates a potentially tampered export
    # file — abort the entire import rather than silently continuing.
    elem_name = xml_elem.respond_to?(:name) ? xml_elem.name : 'unknown'
    elem_path = xml_elem.respond_to?(:path) ? xml_elem.path : elem_name
    preview = string.length > 80 ? "#{string[0, 80]}..." : string
    raise Msf::DBImportError,
          "Unsafe deserialization blocked in <#{elem_name}> (#{elem_path}): " \
          "#{e.message} — base64 value: #{preview}"
  rescue ::Exception => e
    dlog("Failed to unserialize object: #{e.class} #{e.message}")
    if allow_yaml
      YAML.safe_load(string, permitted_classes: MetasploitDataModels::YAML::PERMITTED_CLASSES) rescue string
    else
      string
    end
  end
end