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An Incident Object Description Exchange Format (IODEF) Extension for Structured Cybersecurity Information
RFC 7203

Document type: RFC - Proposed Standard (April 2014; No errata)
Document stream: IETF
Last updated: 2014-04-21
Other versions: plain text, pdf, html

IETF State: Submitted to IESG for Publication Aug 2013
Consensus: Unknown
Document shepherd: Brian Trammell
Shepherd Write-Up: Last changed 2013-10-03

IESG State: RFC 7203 (Proposed Standard)
IANA Action State: RFC-Ed-Ack
Responsible AD: Sean Turner
Send notices to: mile-chairs@tools.ietf.org, draft-ietf-mile-sci@tools.ietf.org

Internet Engineering Task Force (IETF)                      T. Takahashi
Request for Comments: 7203                                          NICT
Category: Standards Track                                   K. Landfield
ISSN: 2070-1721                                                   McAfee
                                                          Y. Kadobayashi
                                                                   NAIST
                                                              April 2014

    An Incident Object Description Exchange Format (IODEF) Extension
                for Structured Cybersecurity Information

Abstract

   This document extends the Incident Object Description Exchange Format
   (IODEF) defined in RFC 5070 to exchange enriched cybersecurity
   information among security experts at organizations and facilitate
   their operations.  It provides a well-defined pattern to consistently
   embed structured information, such as identifier- and XML-based
   information.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7203.

Takahashi, et al.            Standards Track                    [Page 1]
RFC 7203                        IODEF-SCI                     April 2014

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................3
   2. Terminology .....................................................3
   3. Applicability ...................................................4
   4. Extension Definition ............................................5
      4.1. IANA Table for Structured Cybersecurity Information ........5
      4.2. Extended Data Type: XMLDATA ................................6
      4.3. Extending IODEF ............................................6
      4.4. Basic Structure of the Extension Classes ...................8
      4.5. Defining Extension Classes .................................9
           4.5.1. AttackPattern .......................................9
           4.5.2. Platform ...........................................10
           4.5.3. Vulnerability ......................................11
           4.5.4. Scoring ............................................11
           4.5.5. Weakness ...........................................12
           4.5.6. EventReport ........................................13
           4.5.7. Verification .......................................14
           4.5.8. Remediation ........................................15
   5. Mandatory-to-Implement Features ................................15
      5.1. An Example XML Document ...................................16
      5.2. An XML Schema for the Extension ...........................18
   6. Security Considerations ........................................20
      6.1. Transport-Specific Concerns ...............................20
      6.2. Protection of Sensitive and Private Information ...........21
      6.3. Application and Server Security ...........................22
   7. IANA Considerations ............................................22
   8. Acknowledgments ................................................24
   9. References .....................................................24
      9.1. Normative References ......................................24
      9.2. Informative References ....................................26

Takahashi, et al.            Standards Track                    [Page 2]
RFC 7203                        IODEF-SCI                     April 2014

1.  Introduction

   The number of incidents in cyber society is growing day by day.

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