ISO/IEC TS 19249:2017
(Main)Information technology — Security techniques — Catalogue of architectural and design principles for secure products, systems and applications
Information technology — Security techniques — Catalogue of architectural and design principles for secure products, systems and applications
ISO/IEC TS 19249:2017 provides a catalogue of architectural and design principles that can be used in the development of secure products, systems and applications together with guidance on how to use those principles effectively. ISO/IEC TS 19249:2017 gives guidelines for the development of secure products, systems and applications including a more effective assessment with respect to the security properties they are supposed to implement. ISO/IEC TS 19249:2017 does not establish any requirements for the evaluation or the assessment process or implementation.
Technologies de l'information — Techniques de sécurité — Catalogue des principes architecturaux et conceptuels pour la sécurisation des produits, systèmes et applications
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TECHNICAL ISO/IEC TS
SPECIFICATION 19249
First edition
2017-10
Information technology — Security
techniques — Catalogue of
architectural and design principles
for secure products, systems and
applications
Technologies de l'information — Techniques de sécurité — Catalogue
des principes architecturaux et conceptuels pour la sécurisation des
produits, systèmes et applications
Reference number
©
ISO/IEC 2017
© ISO/IEC 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO/IEC 2017 – All rights reserved
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Architectural principles for secure products, systems and applications .2
4.1 General . 2
4.2 Domain separation . 3
4.2.1 General. 3
4.2.2 Principles for defining domain structures . 3
4.2.3 Principles for defining inter-domain communication . 3
4.2.4 Security policies that may be enforced using domain separation. 4
4.2.5 Examples . 4
4.2.6 Considerations for evaluation . 4
4.3 Layering. 5
4.3.1 General. 5
4.3.2 Principles for defining layers . 5
4.3.3 Principles for Interfaces exposed by a layer . 5
4.3.4 Security policies that may be enforced using layering . 5
4.3.5 Examples . 6
4.3.6 Considerations for evaluation . 6
4.4 Encapsulation. 6
4.4.1 General. 6
4.4.2 Principles for defining encapsulation . 7
4.4.3 Security policies that may be enforced using encapsulation . 7
4.4.4 Examples . 7
4.4.5 Considerations for evaluation . 7
4.5 Redundancy . 7
4.5.1 General. 7
4.5.2 Principles for defining redundant elements . 8
4.5.3 Principles for keeping consistency between redundant elements . 8
4.5.4 Security policies that may be enforced using redundancy . 8
4.5.5 Examples . 8
4.5.6 Considerations for evaluation . 9
4.6 Virtualization .10
4.6.1 General.10
4.6.2 Principles for defining virtualization .10
4.6.3 Security policies that may be enforced using virtualization .10
4.6.4 Examples .11
4.6.5 Considerations for evaluation .11
5 Design principles .11
5.1 General .11
5.2 List of design principles for security .12
5.2.1 Least privilege .12
5.2.2 Attack surface minimization .13
5.2.3 Centralized parameter validation .15
5.2.4 Centralized general security services .17
5.2.5 Preparing for error and exception handling .18
5.3 Using the design principles when designing a secure system or application .20
5.3.1 General.20
5.3.2 Least privilege .20
5.3.3 Attack surface minimization .20
© ISO/IEC 2017 – All rights reserved iii
5.3.4 Centralized parameter validation .20
5.3.5 Centralized security services .20
5.3.6 Preparing for error and exception handling .21
6 Evaluation activities for the architectural principles .21
6.1 General .21
6.2 Domain separation .22
6.3 Layering.23
6.4 Encapsulation.23
6.5 Redundancy .24
6.6 Virtualization .25
Bibliography .26
iv © ISO/IEC 2017 – All rights reserved
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 27, IT Security techniques.
© ISO/IEC 2017 – All rights reserved v
Intro
...
TECHNICAL ISO/IEC TS
SPECIFICATION 19249
First edition
2017-10
Information technology — Security
techniques — Catalogue of
architectural and design principles
for secure products, systems and
applications
Technologies de l'information — Techniques de sécurité — Catalogue
des principes architecturaux et conceptuels pour la sécurisation des
produits, systèmes et applications
Reference number
©
ISO/IEC 2017
© ISO/IEC 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO/IEC 2017 – All rights reserved
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Architectural principles for secure products, systems and applications .2
4.1 General . 2
4.2 Domain separation . 3
4.2.1 General. 3
4.2.2 Principles for defining domain structures . 3
4.2.3 Principles for defining inter-domain communication . 3
4.2.4 Security policies that may be enforced using domain separation. 4
4.2.5 Examples . 4
4.2.6 Considerations for evaluation . 4
4.3 Layering. 5
4.3.1 General. 5
4.3.2 Principles for defining layers . 5
4.3.3 Principles for Interfaces exposed by a layer . 5
4.3.4 Security policies that may be enforced using layering . 5
4.3.5 Examples . 6
4.3.6 Considerations for evaluation . 6
4.4 Encapsulation. 6
4.4.1 General. 6
4.4.2 Principles for defining encapsulation . 7
4.4.3 Security policies that may be enforced using encapsulation . 7
4.4.4 Examples . 7
4.4.5 Considerations for evaluation . 7
4.5 Redundancy . 7
4.5.1 General. 7
4.5.2 Principles for defining redundant elements . 8
4.5.3 Principles for keeping consistency between redundant elements . 8
4.5.4 Security policies that may be enforced using redundancy . 8
4.5.5 Examples . 8
4.5.6 Considerations for evaluation . 9
4.6 Virtualization .10
4.6.1 General.10
4.6.2 Principles for defining virtualization .10
4.6.3 Security policies that may be enforced using virtualization .10
4.6.4 Examples .11
4.6.5 Considerations for evaluation .11
5 Design principles .11
5.1 General .11
5.2 List of design principles for security .12
5.2.1 Least privilege .12
5.2.2 Attack surface minimization .13
5.2.3 Centralized parameter validation .15
5.2.4 Centralized general security services .17
5.2.5 Preparing for error and exception handling .18
5.3 Using the design principles when designing a secure system or application .20
5.3.1 General.20
5.3.2 Least privilege .20
5.3.3 Attack surface minimization .20
© ISO/IEC 2017 – All rights reserved iii
5.3.4 Centralized parameter validation .20
5.3.5 Centralized security services .20
5.3.6 Preparing for error and exception handling .21
6 Evaluation activities for the architectural principles .21
6.1 General .21
6.2 Domain separation .22
6.3 Layering.23
6.4 Encapsulation.23
6.5 Redundancy .24
6.6 Virtualization .25
Bibliography .26
iv © ISO/IEC 2017 – All rights reserved
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 27, IT Security techniques.
© ISO/IEC 2017 – All rights reserved v
Intro
...
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