ETSI GS NFV-SEC 028 V4.5.1 (2023-11)

Network Functions Virtualisation (NFV) Release 4; Security; Security Assurance Specification (SCAS) for Generic NFV-MANO

DGS/NFV-SEC028

General Information

• Status: Not Published
• Technical Committee: NFV SEC - Security
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Due Date: 04-Dec-2023
• Completion Date: 09-Nov-2023

Standards Content (Sample)

GROUP SPECIFICATION
Network Functions Virtualisation (NFV) Release 4;
Security;
Security Assurance Specification (SCAS)
for Generic NFV-MANO
Disclaimer
The present document has been produced and approved by the Network Functions Virtualisation (NFV) ETSI Industry
Specification Group (ISG) and represents the views of those members who participated in this ISG.
It does not necessarily represent the views of the entire ETSI membership.

2 ETSI GS NFV-SEC 028 V4.5.1 (2023-11)

Reference
DGS/NFV-SEC028
Keywords
MANO, NFV, SCAS, security, test

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All rights reserved.
ETSI
3 ETSI GS NFV-SEC 028 V4.5.1 (2023-11)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Catalogue of security requirements and related test cases for generic part of NFV-MANO
products . 8
4.1 Introduction . 8
4.2 Security functional requirements and related test cases . 8
4.2.1 Introduction. 8
4.2.2 Security functional requirements on the NFV-MANO deriving from ETSI specifications and related
test cases . 8
4.2.2.1 Security functional requirements deriving from ETSI NFV specifications - general approach . 8
4.2.2.2 Security functional requirements derived from ETSI specifications - general Interface aspects . 9
4.2.2.2.1 Introduction . 9
4.2.2.2.2 Protection at the transport layer . 9
4.2.3 Technical Baseline . 11
4.2.3.1 Introduction . 11
4.2.4 Operating systems . 11
4.2.4.1 General operating system requirements and related test cases . 11
4.2.5 Web servers . 11
4.2.5.1 General web servers' requirements and related test cases . 11
4.2.6 Network devices . 11
4.2.6.1 General network devices requirements and related test cases . 11
4.2.6.2 GTP-C and GTP-U Filtering . 11
4.2.6.2.1 GTP-C Filtering . 11
4.2.6.2.2 GTP-U Filtering. 11
4.3 Security requirements and related test cases related to hardening . 11
4.3.1 Introduction. 11
4.3.2 Technical Baseline . 11
4.3.2.1 Introduction . 11
4.3.3 Operating Systems . 12
4.3.3.1 Introduction . 12
4.3.4 Web Servers . 12
4.3.4.1 Introduction . 12
4.3.5 Network Devices . 12
4.3.5.0 Introduction . 12
4.3.5.1 Traffic Separation . 12
4.3.6 Network Functions in service-based architecture . 12
4.3.6.0 Introduction . 12
4.3.6.1 No code execution or inclusion of external resources by JSON parsers . 12
4.3.6.2 Unique key values in IEs . 12
4.3.6.3 The valid format and range of values for IEs . 12
4.4 Baseline vulnerability testing requirements . 12
4.4.1 Introduction. 12
Annex A (informative): Generic NFV-MANO class description . 13
A.1 Overview . 13
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4 ETSI GS NFV-SEC 028 V4.5.1 (2023-11)
A.2 Minimum set of functions defining Generic NFV-MANO class . 13
A.3 Generic model . 13
A.3.1 Generic NFV-MANO product model overview . 13
A.3.2 Functions defined by ETSI . 13
A.3.3 Other functions . 13
A.3.4 Operating System (OS) . 13
A.3.5 Interfaces . 14
Annex B (informative): Generic NFV-MANO assets and threats . 15
B.1 Introduction . 15
B.2 Generic critical assets . 15
B.3 Generic threats . 15
B.3.1 Generic threats format . 15
B.3.2 Threats relating to ETSI-defined interfaces and functions . 15
B.3.2.1 Weak cryptographic algorithms . 15
B.3.3 Spoofing identity . 16
B.3.3.1 Default Accounts . 16
B.3.3.2 Weak Password Policies . 16
B.3.3.3 Password peek . 16
B.3.3.4 Direct Root Access . 16
B.3.3.5 IP Spoofing . 16
B.3.3.6 Malware . 16
B.3.3.7 Eavesdropping . 16
B.3.4 Tampering . 16
B.3.4.1 Software Tampering . 16
B.3.4.2 Ownership File Misuse . 16
B.3.4.3 External Device Boot . 16
B.3.4.4 Log Tampering . 17
B.3.4.5 OAM Traffic Tampering . 17
B.3.4.6 File Write Permissions Abuse . 17
B.3.4.7 User Session Tampering . 17
B.3.5 Repudiation . 17
B.3.5.1 Lack of User Activity Trace . 17
B.3.6 Information disclosure . 17
B.3.6.1 Poor key generation . 17
B.3.6.2 Poor key management . 17
B.3.6.3 Weak cryptographic algorithms . 17
B.3.6.4 Insecure Data Storage . 17
B.3.6.5 System Fingerprinting. 17
B.3.6.6 Malware . 17
B.3.6.7 Personal Identification Information Violation . 18
B.3.6.8 Insecure Default Configuration. 18
B.3.6.9 File/Directory Read Permissions Misuse . 18
B.3.6.10 Insecure Network Services . 18
B.3.6.11 Unnecessary Services . 18
B.3.6.12 Log Disclosure . 18
B.3.6.13 Unnecessary Applications . 18
B.3.6.14 Eavesdropping . 18
B.3.6.15 Security threat caused by lack of generic NFV-MANO product traffic isolation . 18
B.3.7 Denial of service . 18
B.3.7.1 Compromised/Misbehaving User Equipments . 18
B.3.7.2 Implementation Flaw . 18
B.3.7.3 Insecure Network Services . 18
B.3.7.4 Human Error . 18
B.3.8 Elevation of privilege . 19
B.3.8.1 Misuse by authorized users . 19
B.3.8.2 Over-Privileged Processes/Services . 19
B.3.8.3 Folder Write Permission Abuse . 19
B.3.8.4 Root-Owned File Write Permission Abuse . 19
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5 ETSI GS NFV-SEC 028 V4.5.1 (2023-11)
B.3.8.5 High-Privileged Files . 19
B.3.8.6 Insecure Network Services . 19
B.3.8.7 Elevation of Privilege via Unnecessary Network Services . 19
Annex C (informative): Change History . 20
History . 21

ETSI
6 ETSI GS NFV-SEC 028 V4.5.1 (2023-11)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
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ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the ®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Group Specification (GS) has been produced by ETSI Industry Specification Group (ISG) Network Functions
Virtualisation (NFV).
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
7 ETSI GS NFV-SEC 028 V4.5.1 (2023-11)
1 Scope
The present document defines the security assurance of generic NFV-MANO products. The outcome of the present
document expects the security assets, security threats, security requirements and test cases for evaluating the generic
security of NFV-MANO products. In the present document, the security assurance methodology introduced in 3GPP
specifications will be leveraged. Security test cases including testing goals, testing steps, and evidence of testing results
will be produced for evaluating whether the security requirements are implemented by NFV-MANO products.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 133 117: "Universal Mobile Telecommunications System (UMTS); LTE; 5G; Catalogue
of general security assurance requirements (3GPP TS 33.117)".
[2] ETSI GS NFV-SOL 013: "Network Functions Virtualisation (NFV) Release 3; Protocols and Data
Models; Specification of common aspects for RESTful NFV MANO APIs".
[3] ETSI GS NFV
...