Layer7 API Gateway v10.1.00
Security Target
Version 1.13
June 2024
Document prepared by
www.lightshipsec.com
Broadcom Security Target
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Document History
Version Date Author Description
1.0 18-Oct-2022 M. Baldock Version to 1.0
1.1 01-Dec-2022 M. Baldock Addressing OR01
1.2 02-Feb-2023 M. Baldock Addressing OR05
1.3 08-May-2023 M. Baldock Addressing OR06
1.4 14-Jun-2023 M. Baldock Addressing OR08
1.5 6-Jul-2023 L. Turner Addressing OR09
1.6 27-Sept-2023 M. Baldock Addressing OR11
1.7 08-Nov-2023 M. Baldock Addressing QA comments
1.8 18-Dec-2023 M. Baldock Addressing OR14
1.9 13-Feb-2024 M. Torabi Addressing OR15
1.10 25-Mar-2024 M. Baldock Addressing OR16
1.11 16-Apr-2024 M. Baldock Update doc version
1.12 23-May-2024 M. Baldock Addressing OR18
1.13 19-Jun-2024 M. Baldock Update document title
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Table of Contents
1 Introduction.......................................................................................................................5
1.1 Overview....................................................................................................................5
1.2 Identification ...............................................................................................................5
1.3 Conformance Claims ..................................................................................................5
1.4 Terminology................................................................................................................7
2 TOE Description................................................................................................................8
2.1 Type...........................................................................................................................8
2.2 Usage.........................................................................................................................8
2.3 Security Functions / Logical Scope .............................................................................9
2.4 Physical Scope.........................................................................................................11
3 Security Problem Definition ...........................................................................................12
3.1 Threats.....................................................................................................................12
3.2 Assumptions.............................................................................................................13
3.3 Organizational Security Policies................................................................................15
4 Security Objectives.........................................................................................................15
5 Security Requirements...................................................................................................17
5.1 Conventions .............................................................................................................17
5.2 Extended Components Definition..............................................................................17
5.3 Functional Requirements..........................................................................................18
5.4 Assurance Requirements..........................................................................................35
6 TOE Summary Specification ..........................................................................................36
6.1 Security Audit ...........................................................................................................36
6.2 Cryptographic Support..............................................................................................36
6.3 Identification and Authentication ...............................................................................40
6.4 Security Management...............................................................................................43
6.5 Protection of the TSF................................................................................................44
6.6 TOE Access .............................................................................................................45
6.7 Trusted Path/Channels .............................................................................................46
7 Rationale .........................................................................................................................47
7.1 Conformance Claim Rationale ..................................................................................47
7.2 Security Objectives Rationale ...................................................................................47
7.3 Security Requirements Rationale..............................................................................47
List of Tables
Table 1: Evaluation identifiers......................................................................................................5
Table 2: NIAP Technical Decisions..............................................................................................5
Table 3: Terminology...................................................................................................................7
Table 4: CAVP Certificates........................................................................................................10
Table 5: Threats........................................................................................................................12
Table 6: Assumptions................................................................................................................13
Table 7: Organizational Security Policies...................................................................................15
Table 8: Security Objectives for the Operational Environment....................................................15
Table 9: Extended Components ................................................................................................17
Table 10: Summary of SFRs......................................................................................................18
Table 11: Audit Events ..............................................................................................................20
Table 12: Assurance Requirements...........................................................................................35
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Table 13: Key Agreement Mapping............................................................................................37
Table 14: HMAC Characteristics................................................................................................38
Table 15: Keys ..........................................................................................................................44
Table 16: Passwords.................................................................................................................44
Table 17: NDcPP SFR Rationale...............................................................................................47
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1 Introduction
1.1 Overview
1 This Security Target (ST) defines the Layer7 API Gateway v10.1.00 Target of
Evaluation (TOE) for the purposes of Common Criteria (CC) evaluation.
2 The Layer7 API Gateway (TOE) is an XML firewall and service gateway that controls
how web services are exposed to and accessed by external client applications.
1.2 Identification
Table 1: Evaluation identifiers
Target of Evaluation Layer7 API Gateway v10.1.00
Build: v10.1.00-17078-CR02
Security Target Layer7 API Gateway v10.1.00 Security Target, v1.13
1.3 Conformance Claims
3 This ST supports the following conformance claims:
a) CC version 3.1 revision 5
b) CC Part 2 extended
c) CC Part 3 conformant
d) collaborative Protection Profile for Network Devices, v2.2e (NDcPP)
e) NIAP Technical Decisions per Table 2
Table 2: NIAP Technical Decisions
TD # Name Rationale if n/a
TD0527 Updates to Certificate Revocation Testing
(FIA_X509_EXT.1)
TD0528 NIT Technical Decision for Missing EAs for
FCS_NTP_EXT.1.4
TD0536 NIT Technical Decision for Update Verification
Inconsistency
TD0537 NIT Technical Decision for Incorrect reference to
FCS_TLSC_EXT.2.3
TD0546 NIT Technical Decision for DTLS - clarification of
Application Note 63
DTLS not claimed
TD0547 NIT Technical Decision for Clarification on developer
disclosure of AVA_VAN
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TD # Name Rationale if n/a
TD0555 NIT Technical Decision for RFC Reference incorrect in
TLSS Test
TD0556 NIT Technical Decision for RFC 5077 question
TD0563 NiT Technical Decision for Clarification of audit date
information
TD0564 NiT Technical Decision for Vulnerability Analysis Search
Criteria
TD0569 NIT Technical Decision for Session ID Usage Conflict in
FCS_DTLSS_EXT.1.7
TD0570 NiT Technical Decision for Clarification about FIA_AFL.1
TD0571 NiT Technical Decision for Guidance on how to handle
FIA_AFL.1
TD0572 NiT Technical Decision for Restricting FTP_ITC.1 to only
IP address identifiers
TD0580 NIT Technical Decision for clarification about use of DH14
in NDcPPv2.2e
TD0581 NIT Technical Decision for Elliptic curve-based key
establishment and NIST SP 800-56Arev3
TD0591 NIT Technical Decision for Virtual TOEs and hypervisors
TD0592 NIT Technical Decision for Local Storage of Audit
Records
TD0631 NIT Technical Decision for Clarification of public key
authentication for SSH Server
TD0632 NIT Technical Decision for Consistency with Time Data
for vNDs
TD0635 NIT Technical Decision for TLS Server and Key
Agreement Parameters
TD0636 NIT Technical Decision for Clarification of Public Key
User Authentication for SSH
TD0638 NIT Technical Decision for Key Pair Generation for
Authentication
TD0639 NIT Technical Decision for Clarification for NTP MAC
Keys
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TD # Name Rationale if n/a
TD0670 NIT Technical Decision for Mutual and Non-Mutual Auth
TLSC Testing
FCS_TLSC_EXT.2
not claimed
TD0738 NIT Technical Decision for Link to Allowed-With List
TD0790 NIT Technical Decision: Clarification Required for testing
IPv6
FCS_TLSC_EXT.1,
FCS_DTLSC_EXT.1
not claimed
TD0792 NIT Technical Decision: FIA_PMG_EXT.1 - TSS EA not
in line with SFR
TD0800 Updated NIT Technical Decision for IPsec IKE/SA
Lifetimes Tolerance
IPsec not claimed
1.4 Terminology
Table 3: Terminology
Term Definition
CC Common Criteria
EAL Evaluation Assurance Level
NDcPP collaborative Protection Profile for Network Devices
PP Protection Profile
TOE Target of Evaluation
TSF TOE Security Functionality
Policy Manager TLS client used for remote management
Firewall Network security system that monitors and controls incoming
and outgoing network traffic
NTP Server Network time protocol server for clock synchronization
Syslog Server Remote server for storing audit logs
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2 TOE Description
2.1 Type
4 The Layer7 API Gateway (TOE) is a Case 1 virtual network device.
2.2 Usage
2.2.1 Deployment
5 The TOE (enclosed in red) is a virtual appliance deployed in a network that provides
access control to a corporate network. The TOE provides access control to web
services that are exposed to and accessed by external client applications.
6 Figure 1 depicts an example deployment of the TOE devices (enclosed in red).
Figure 1: Example TOE deployment
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2.2.2 Interfaces
7 The TOE communication channels are shown in Figure 2.
Figure 2: TOE interfaces
8 The TOE interfaces are as follows:
a) CLI. Command line management interface via virtual console or remote SSH.
b) Policy Manager. Thick client GUI management interface via TLS with the use
of a TLS proxy application.
c) Logs. Transmission of logs to a syslog server via SSH.
d) NTP. The TOE synchronizes time via NTP.
2.3 Security Functions / Logical Scope
9 The TOE provides the following security functions:
a) Protected Management. The TOE protects the integrity and confidentiality of
remote management as noted in section 2.2.2 above.
b) Protected Communications. The TOE protects the integrity and
confidentiality of remote auditing as noted in section 2.2.2 above.
c) Secure Administration. The TOE enables secure management of its security
functions, including:
i) Administrator authentication with public keys and passwords
ii) Configurable password policies
iii) Role Based Access Control
iv) Access banners
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v) Management of critical security functions and data
vi) Protection of cryptographic keys and passwords
d) Trusted Update. The TOE ensures the authenticity and integrity of software
updates through digital signatures.
e) System Monitoring. The TOE generates logs of security relevant events. The
TOE stores logs locally and is capable of sending log events to a remote audit
server.
f) Self-Test. The TOE performs a suite of self-tests to ensure the correct
operation and enforcement of its security functions.
g) Cryptographic Operations. The TOE implements a cryptographic module.
Relevant Cryptographic Algorithm Validation Program (CAVP) certificates are
shown in Table 4.
Table 4: CAVP Certificates
Algorithm Capability Certificate
AES-CBC-128
AES-CBC-256
A3606
AES-GCM-128
AES-GCM-256
KAS-FFC
AES-CTR-128
AES-CTR-256
A3606
A2926
ECDSA Key Gen (186-4)
ECDSA Sig Gen (186-4)
ECDSA Sig Ver (186-4)
RSA Key Gen (186-4)
RSA Sig Gen (186-4)
RSA Sig Ver (186-4)
SHA-1, SHA-256, SHA-384, SHA-512
HMAC-SHA-256, HMAC-SHA-512
KAS-ECC
Counter DRBG
HMAC DRBG
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2.4 Physical Scope
10 The TOE boundary includes the Gateway 10.1.00.17078-CR02 VMware Centos7
OVA software that runs inside a virtual machine. The TOE is downloaded from the
Broadcom portal.
2.4.1 Guidance Documents
11 The TOE includes the following guidance documents (PDF):
a) Layer7 API Gateway v10.1.00v10.1.00-17078-CR02 Common Criteria Guide,
v1.10 2024-04-16
b) Layer7 API Gateway 10.1 Last Updated November 4, 2022
12 Users can download the guidance documents from Broadcom’s web portal.
https://techdocs.broadcom.com/us/en/ca-enterprise-software/layer7-api-
management/api-gateway/10-1.html
2.4.2 Non-TOE Components
13 The TOE operates with the following components in the environment:
a) Audit Server. The TOE sends audit events to a syslog server.
b) NTP Server. The TOE synchronizes time via NTP.
c) TLS Proxy. TLS application used with Policy Manager from the remote
endpoint.
d) VMware hypervisors (ESX, ESXi, vSphere). The TOE operates on VMware
ESXi 6.7.
2.4.3 Functions not included in the TOE Evaluation
14 The functions evaluated are limited to those identified at section 2.3. The following
functions have not been assessed as part of this evaluation:
a) XML firewall and policy enforcement features.
b) vSphere High Availability feature
c) Identity and Access Management feature
d) Hardware Security Module feature
e) Rest API
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3 Security Problem Definition
15 The Security Problem Definition is reproduced from section 4 of the NDcPP.
3.1 Threats
Table 5: Threats
Identifier Description
T.UNAUTHORIZED_
ADMINISTRATOR_
ACCESS
Threat agents may attempt to gain Administrator access to the
Network Device by nefarious means such as masquerading as an
Administrator to the device, masquerading as the device to an
Administrator, replaying an administrative session (in its entirety, or
selected portions), or performing man-in-the-middle attacks, which
would provide access to the administrative session, or sessions
between Network Devices. Successfully gaining Administrator access
allows malicious actions that compromise the security functionality of
the device and the network on which it resides.
T.WEAK_
CRYPTOGRAPHY
Threat agents may exploit weak cryptographic algorithms or perform a
cryptographic exhaust against the key space. Poorly chosen
encryption algorithms, modes, and key sizes will allow
attackers to compromise the algorithms, or brute force exhaust the key
space and give them unauthorized access allowing them to read,
manipulate and/or control the traffic with minimal effort.
T.UNTRUSTED_
COMMUNICATION_
CHANNELS
Threat agents may attempt to target Network Devices that do not use
standardized secure tunnelling protocols to protect the critical network
traffic. Attackers may take advantage of poorly designed protocols or
poor key management to successfully perform man-in-the-middle
attacks, replay attacks, etc. Successful attacks will result in loss of
confidentiality and integrity of the critical network traffic, and potentially
could lead to a compromise of the Network Device itself.
T.WEAK_
AUTHENTICATION_
ENDPOINTS
Threat agents may take advantage of secure protocols that use weak
methods to authenticate the endpoints – e.g. a shared password that
is guessable or transported as plaintext. The consequences are the
same as a poorly designed protocol, the attacker could masquerade
as the Administrator or another device, and the attacker could insert
themselves into the network stream and perform a man-in-the-middle
attack. The result is the critical network traffic is exposed and there
could be a loss of confidentiality and integrity, and potentially the
Network Device itself could be compromised.
T.UPDATE_
COMPROMISE
Threat agents may attempt to provide a compromised update of the
software or firmware which undermines the security functionality of the
device. Non-validated updates or updates validated using non-secure
or weak cryptography leave the update firmware vulnerable to
surreptitious alteration.
T.UNDETECTED_
ACTIVITY
Threat agents may attempt to access, change, and/or modify the
security functionality of the Network Device without Administrator
awareness. This could result in the attacker finding an avenue (e.g.,
misconfiguration, flaw in the product) to compromise the device and
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Identifier Description
the Administrator would have no knowledge that the device has been
compromised.
T.SECURITY_
FUNCTIONALITY_
COMPROMISE
Threat agents may compromise credentials and device data enabling
continued access to the Network Device and its critical data. The
compromise of credentials includes replacing existing credentials with
an attacker’s credentials, modifying existing credentials, or obtaining
the Administrator or device credentials for use by the attacker.
T.PASSWORD_
CRACKING
Threat agents may be able to take advantage of weak administrative
passwords to gain privileged access to the device. Having privileged
access to the device provides the attacker unfettered access to the
network traffic, and may allow them to take advantage of any trust
relationships with other Network Devices.
T.SECURITY_
FUNCTIONALITY_
FAILURE
An external, unauthorized entity could make use of failed or
compromised security functionality and might therefore subsequently
use or abuse security functions without prior authentication to access,
change or modify device data, critical network traffic or security
functionality of the device.
3.2 Assumptions
Table 6: Assumptions
Identifier Description
A.PHYSICAL_
PROTECTION
The Network Device is assumed to be physically protected in its
operational environment and not subject to physical attacks that
compromise the security or interfere with the device’s physical
interconnections and correct operation. This protection is assumed to
be sufficient to protect the device and the data it contains. As a result,
the cPP does not include any requirements on physical tamper
protection or other physical attack mitigations. The cPP does not
expect the product to defend against physical access to the device
that allows unauthorized entities to extract data, bypass other controls,
or otherwise manipulate the device. For vNDs, this assumption applies
to the physical platform on which the VM runs.
A.LIMITED_
FUNCTIONALITY
The device is assumed to provide networking functionality as its core
function and not provide functionality/services that could be deemed
as general purpose computing. For example, the device should not
provide a computing platform for general purpose applications
(unrelated to networking functionality).
If a virtual TOE evaluated as a pND, following Case 2 vNDs as
specified in Section 1.2, the VS is considered part of the TOE with only
one vND instance for each physical hardware platform. The exception
being where components of a distributed TOE run inside more than
one virtual machine (VM) on a single VS. In Case 2 vND, no non-TOE
guest VMs are allowed on the platform.
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Identifier Description
A.NO_THRU_
TRAFFIC_
PROTECTION
A standard/generic Network Device does not provide any assurance
regarding the protection of traffic that traverses it. The intent is for the
Network Device to protect data that originates on or is destined to the
device itself, to include administrative data and audit data. Traffic that
is traversing the Network Device, destined for another network entity,
is not covered by the NDcPP. It is assumed that this protection will be
covered by cPPs and PP-Modules for particular types of Network
Devices (e.g., firewall).
A.TRUSTED_
ADMINISTRATOR
The Security Administrator(s) for the Network Device are assumed to
be trusted and to act in the best interest of security for the
organization. This includes appropriately trained, following policy, and
adhering to guidance documentation. Administrators are trusted to
ensure passwords/credentials have sufficient strength and entropy and
to lack malicious intent when administering the device. The Network
Device is not expected to be capable of defending against a malicious
Administrator that actively works to bypass or compromise the security
of the device.
For TOEs supporting X.509v3 certificate-based authentication, the
Security Administrator(s) are expected to fully validate (e.g. offline
verification) any CA certificate (root CA certificate or intermediate CA
certificate) loaded into the TOE’s trust store (aka ‘root store’, ‘ trusted
CA Key Store’, or similar) as a trust anchor prior to use (e.g. offline
verification).
A.REGULAR_
UPDATES
The Network Device firmware and software is assumed to be updated
by an Administrator on a regular basis in response to the release of
product updates due to known vulnerabilities.
A.ADMIN_
CREDENTIALS_
SECURE
The Administrator’s credentials (private key) used to access the
Network Device are protected by the platform on which they reside.
A.RESIDUAL_
INFORMATION
The Administrator must ensure that there is no unauthorized access
possible for sensitive residual information (e.g. cryptographic keys,
keying material, PINs, passwords etc.) on networking equipment when
the equipment is discarded or removed from its operational
environment.
A.VS_TRUSTED_AD
MINISTRATOR
The Security Administrators for the VS are assumed to be trusted and
to act in the best interest of security for the organization. This includes
not interfering with the correct operation of the device. The Network
Device is not expected to be capable of defending against a malicious
VS Administrator that actively works to bypass or compromise the
security of the device.
A.VS_REGULAR_UP
DATES
The VS software is assumed to be updated by the VS Administrator on
a regular basis in response to the release of product updates due to
known vulnerabilities.
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Identifier Description
A.VS_ISOLATON For vNDs, it is assumed that the VS provides, and is configured to
provide sufficient isolation between software running in VMs on the
same physical platform. Furthermore, it is assumed that the VS
adequately protects itself from software running inside VMs on the
same physical platform.
A.VS_CORRECT_CO
NFIGURATION
For vNDs, it is assumed that the VS and VMs are correctly configured
to support ND functionality implemented in VMs.
3.3 Organizational Security Policies
Table 7: Organizational Security Policies
Identifier Description
P.ACCESS_BANNER The TOE shall display an initial banner describing restrictions of use,
legal agreements, or any other appropriate information to which users
consent by accessing the TOE.
4 Security Objectives
16 The security objectives are reproduced from section 5 of the NDcPP.
Table 8: Security Objectives for the Operational Environment
Identifier Description
OE.PHYSICAL Physical security, commensurate with the value of the TOE and
the data it contains, is provided by the environment.
OE.NO_GENERAL_
PURPOSE
There are no general-purpose computing capabilities (e.g.,
compilers or user applications) available on the TOE, other than
those services necessary for the operation, administration and
support of the TOE.
OE.NO_THRU_
TRAFFIC_
PROTECTION
The TOE does not provide any protection of traffic that traverses
it. It is assumed that protection of this traffic will be covered by
other security and assurance measures in the operational
environment.
OE.TRUSTED_ADMIN Security Administrators are trusted to follow and apply all
guidance documentation in a trusted manner. For vNDs, this
includes the VS Administrator responsible for configuring the
VMs that implement ND functionality.
For TOEs supporting X.509v3 certificate-based authentication,
the Security Administrator(s) are assumed to monitor the
revocation status of all certificates in the TOE’s trust store and to
remove any certificate from the TOE’s trust store in case such
certificate can no longer be trusted.
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Identifier Description
OE.UPDATES The TOE firmware and software is updated by an Administrator
on a regular basis in response to the release of product updates
due to known vulnerabilities.
OE.ADMIN_
CREDENTIALS_
SECURE
The Administrator’s credentials (private key) used to access the
TOE must be protected on any other platform on which they
reside.
OE.RESIDUAL_
INFORMATION
The Security Administrator ensures that there is no unauthorized
access possible for sensitive residual information (e.g.
cryptographic keys, keying material, PINs, passwords etc.) on
networking equipment when the equipment is discarded or
removed from its operational environment.
OE.VM_CONFIGURATION For vNDs, the Security Administrator ensures that the VS and
VMs are configured to
• reduce the attack surface of VMs as much as possible while
supporting ND functionality (e.g., remove unnecessary virtual
hardware, turn off unused inter-VM communications
mechanisms), and
• correctly implement ND functionality (e.g., ensure virtual
networking is properly configured to support network traffic,
management channels, and audit reporting).
The VS should be operated in a manner that reduces the
likelihood that vND operations are adversely affected by
virtualisation features such as cloning, save/restore,
suspend/resume, and live migration.
If possible, the VS should be configured to make use of features
that leverage the VS’s privileged position to provide additional
security functionality. Such features could include malware
detection through VM introspection, measured VM boot, or VM
snapshot for forensic analysis.
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5 Security Requirements
5.1 Conventions
17 This document uses the following font conventions to identify the operations defined
by the CC:
a) Assignment. Indicated with italicized text.
b) Refinement. Indicated with bold text and strikethroughs.
c) Selection. Indicated with underlined text.
d) Assignment within a Selection: Indicated with italicized and underlined text.
e) Iteration. Indicated by adding a string starting with “/” (e.g.
“FCS_COP.1/Hash”).
18 Note: Operations performed within the Security Target are denoted within brackets
[]. Operations shown without brackets are reproduced from the NDcPP.
5.2 Extended Components Definition
19 The Extended Components are defined in Appendix C of the NDcPP.
Table 9: Extended Components
Requirement Title Applicable TDs
FAU_STG_EXT.1 Protected Audit Event Storage
FCS_NTP_EXT.1 NTP Protocol TD0528
FCS_RBG_EXT.1 Random Bit Generation
FCS_SSHC_EXT.1 SSH Client Protocol TD0636
FCS_SSHS_EXT.1 SSH Server Protocol TD0631
FCS_TLSC_EXT.1 TLS Client Protocol Without Mutual
Authentication
TD0634
FCS_TLSS_EXT.1 TLS Server Protocol Without Mutual
Authentication
TD0635
FIA_PMG_EXT.1 Password Management
FIA_UIA_EXT.1 User Identification and Authentication
FIA_UAU_EXT.2 Password-based Authentication
Mechanism
FIA_X509_EXT.1 X.509 Certificate Validation TD0527
FIA_X509_EXT.2 X.509 Certification Authentication
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Requirement Title Applicable TDs
FIA_X509_EXT.3 X.509 Certificate Requests
FPT_SKP_EXT.1 Protection of TSF Data (for reading of
all symmetric keys)
FPT_APW_EXT.1 Protection of Administrator Passwords
FPT_TST_EXT.1 TSF Testing
FPT_TUD_EXT.1 Trusted Update
FPT_STM_EXT.1 Reliable Time Stamps
FTA_SSL_EXT.1 TSF-initiated Session Locking
5.3 Functional Requirements
Table 10: Summary of SFRs
Requirement Title
FAU_GEN.1 Audit Data Generation
FAU_GEN.2 User Identity Association
FAU_STG_EXT.1 Protected Audit Event Storage
FCS_CKM.1 Cryptographic Key Generation
FCS_CKM.2 Cryptographic Key Establishment
FCS_CKM.4 Cryptographic Key Destruction
FCS_COP.1/DataEncryption Cryptographic Operation (AES Data Encryption/Decryption)
FCS_COP.1/SigGen Cryptographic Operation (Signature Generation and Verification)
FCS_COP.1/Hash Cryptographic Operation (Hash Algorithm)
FCS_COP.1/KeyedHash Cryptographic Operation (Keyed Hash Algorithm)
FCS_NTP_EXT.1 NTP Protocol
FCS_RBG_EXT.1 Random Bit Generation
FCS_SSHC_EXT.1 SSH Client Protocol
FCS_SSHS_EXT.1 SSH Server Protocol
FCS_TLSS_EXT.1 TLS Server Protocol Without Mutual Authentication
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Requirement Title
FIA_AFL.1 Authentication Failure Management
FIA_PMG_EXT.1 Password Management
FIA_UIA_EXT.1 User Identification and Authentication
FIA_UAU_EXT.2 Password-based Authentication Mechanism
FIA_UAU.7 Protected Authentication Feedback
FIA_X509_EXT.1/Rev X.509 Certificate Validation
FIA_X509_EXT.2 X.509 Certificate Authentication
FIA_X509_EXT.3 X.509 Certificate Requests
FMT_MOF.1/ManualUpdate Management of Security Functions Behaviour
FMT_MTD.1/CoreData Management of TSF Data
FMT_MTD.1/CryptoKeys Management of TSF Data
FMT_SMF.1 Specification of Management Functions
FMT_SMR.2 Restrictions on Security Roles
FPT_SKP_EXT.1 Protection of TSF Data (for reading of all pre-shared, symmetric
and private keys)
FPT_APW_EXT.1 Protection of Administrator Passwords
FPT_TST_EXT.1 TSF Testing
FPT_TUD_EXT.1 Trusted Update
FPT_STM_EXT.1 Reliable Time Stamps
FTA_SSL_EXT.1 TSF-initiated Session Locking
FTA_SSL.3 TSF-initiated Termination
FTA_SSL.4 User-initiated Termination
FTA_TAB.1 Default TOE Access Banners
FTP_ITC.1 Inter-TSF trusted channel
FTP_TRP.1/Admin Trusted Path
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5.3.1 Security Audit (FAU)
FAU_GEN.1 Audit Data Generation
FAU_GEN.1.1 The TSF shall be able to generate an audit record of the following
auditable events:
a) Start-up and shutdown of the audit functions;
b) All auditable events for the not specified level of audit;
c) All administrative actions comprising:
o Administrative login and logout (name of user account shall
be logged if individual user accounts are required for
Administrators).
o Changes to TSF data related to configuration changes (in
addition to the information that a change occurred it shall be
logged what has been changed).
o Generating/import of, changing, or deleting of cryptographic
keys (in addition to the action itself a unique key name or
key reference shall be logged).
o Resetting passwords (name of related user account shall be
logged).
o [no other actions];
d) Specifically defined auditable events listed in Table 2 Table 11.
Table 11: Audit Events
Requirement Auditable Events Additional Audit
Record Contents
FAU_GEN.1 None. None.
FAU_GEN.2 None. None.
FAU_STG_EXT.1 None. None.
FCS_CKM.1 None. None.
FCS_CKM.2 None. None.
FCS_CKM.4 None. None.
FCS_COP.1/DataEncryption None. None.
FCS_COP.1/SigGen None. None.
FCS_COP.1/Hash None. None.
FCS_COP.1/KeyedHash None. None.
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Requirement Auditable Events Additional Audit
Record Contents
FCS_NTP_EXT.1 Configuration of a new
time server
Removal of configured
time server
Identity if new/removed
time server
FCS_RBG_EXT.1 None. None.
FCS_SSHC_EXT.1 Failure to establish an
SSH Session
Reason for failure
FCS_SSHS_EXT.1 Failure to establish an
SSH session
Reason for failure
FCS_TLSS_EXT.1 Failure to establish a
TLS Session
Reason for failure
FIA_AFL.1 Unsuccessful login
attempts limit is met or
exceeded.
Origin of the attempt
(e.g., IP address).
FIA_PMG_EXT.1 None. None.
FIA_UIA_EXT.1 All use of identification
and authentication
mechanism.
Provided user identity,
origin of the attempt
(e.g., IP address).
FIA_UAU_EXT.2 All use of identification
and authentication
mechanism.
Origin of the attempt
(e.g., IP address).
FIA_UAU.7 None. None.
FIA_X509_EXT.1/Rev
• Unsuccessful
attempt to validate a
certificate.
• Any addition,
replacement or
removal of trust
anchors in the
TOE's trust store.
• Reason for failure
of certificate
validation.
• Identification of
certificates added,
replaced or
removed as trust
anchor in the
TOE's trust store.
FIA_X509_EXT.2 None. None.
FIA_X509_EXT.3 None. None.
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Requirement Auditable Events Additional Audit
Record Contents
FMT_MOF.1/ManualUpdate Any attempt to initiate a
manual update
None.
FMT_MTD.1/CoreData None. None.
FMT_MTD.1/CryptoKeys None. None.
FMT_SMF.1 All management
activities of TSF data.
None.
FMT_SMR.2 None. None.
FPT_SKP_EXT.1 None. None.
FPT_APW_EXT.1 None. None.
FPT_TST_EXT.1 None. None.
FPT_TUD_EXT.1 Initiation of update;
result of the update
attempt (success or
failure)
None.
FPT_STM_EXT.1 Discontinuous changes
to time - either
Administrator actuated
or changed via an
automated process.
(Note that no continuous
changes to time need to
be logged. See also
application note on
FPT_STM_EXT.1)
For discontinuous
changes to time: The old
and new values for the
time. Origin of the
attempt to change time
for success and failure
(e.g., IP address).
FTA_SSL_EXT.1 (if “terminate the
session” is selected)
The termination of a
local session by the
session locking
mechanism.
None.
FTA_SSL.3 The termination of a
remote session by the
session locking
mechanism.
None.
FTA_SSL.4 The termination of an
interactive session.
None.
FTA_TAB.1 None. None.
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Requirement Auditable Events Additional Audit
Record Contents
FTP_ITC.1 Initiation of the trusted
channel.
Termination of the
trusted channel.
Failure of the trusted
channel functions.
Identification of the
initiator and target of
failed trusted channels
establishment attempt.
FTP_TRP.1/Admin Initiation of the trusted
path.
Termination of the
trusted path.
Failure of the trusted
path functions.
None.
FAU_GEN.1.2 The TSF shall record within each audit record at least the following
information:
a) Date and time of the event, type of event, subject identity, and the
outcome (success or failure) of the event; and
b) For each audit event type, based on the auditable event definitions of
the functional components included in the cPP/ST, information
specified in column three of Table 2 Table 11.
FAU_GEN.2 User Identity Association
FAU_GEN.2.1 For audit events resulting from actions of identified users, the TSF shall
be able to associate each auditable event with the identity of the user
that caused the event.
FAU_STG_EXT.1 Protected Audit Event Storage
FAU_STG_EXT.1.1 The TSF shall be able to transmit the generated audit data to an external
IT entity using a trusted channel according to FTP_ITC.1.
FAU_STG_EXT.1.2 The TSF shall be able to store generated audit data on the TOE itself. In
addition [
• The TOE shall consist of a single standalone component that stores
audit data locally]
FAU_STG_EXT.1.3 The TSF shall [overwrite previous audit records according to the
following rule: [overwrite oldest record first], [no other action]] when the
local storage space for audit data is full.
5.3.2 Cryptographic Support (FCS)
FCS_CKM.1 Cryptographic Key Generation
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FCS_CKM.1.1 The TSF shall generate asymmetric cryptographic keys in accordance
with a specified cryptographic key generation algorithm: [
• RSA schemes using cryptographic key sizes of 2048-bit or greater
that meet the following: FIPS PUB 186-4, “Digital Signature Standard
(DSS)”, Appendix B.3;
• ECC schemes using “NIST curves” [P-256, P-384, P-521] that meet
the following: FIPS PUB 186-4, “Digital Signature Standard (DSS)”,
Appendix B.4;
• FFC Schemes using ‘safe-prime’ groups that meet the following:
“NIST Special Publication 800-56A Revision 3, Recommendation for
Pair-Wise Key Establishment Schemes Using Discrete Logarithm
Cryptography” and [RFC 3526]
]and specified cryptographic key sizes [assignment: cryptographic key
sizes] that meet the following: [assignment: list of standards].
FCS_CKM.2 Cryptographic Key Establishment
FCS_CKM.2.1 The TSF shall perform cryptographic key establishment in accordance
with a specified cryptographic key establishment method: [
• RSA-based key establishment schemes that meet the following:
RSAES-PKCS1-v1_5 as specified in Section 7.2 of RFC 3447,
“Public-Key Cryptography Standards (PKCS) #1: RSA Cryptography
Specifications Version 2.1”;
• Elliptic curve-based key establishment schemes that meet the
following: NIST Special Publication 800-56A Revision 3,
“Recommendation for Pair-Wise Key Establishment Schemes Using
Discrete Logarithm Cryptography”;
• FFC Schemes using “safe-prime” groups that meet the following:
‘NIST Special Publication 800-56A Revision 3, “Recommendation for
Pair-Wise Key Establishment Schemes Using Discrete Logarithm
Cryptography” and [RFC 3526];
] that meets the following: [assignment: list of standards].
FCS_CKM.4 Cryptographic Key Destruction
FCS_CKM.4.1 The TSF shall destroy cryptographic keys in accordance with a specified
cryptographic key destruction method [
• For plaintext keys in volatile storage, the destruction shall be
executed by a [destruction of reference to the key directly followed
by a request for garbage collection];
• For plaintext keys in non-volatile storage, the destruction shall be
executed by the invocation of an interface provided by a part of the
TSF that [
o instructs a part of the TSF to destroy the abstraction that
represents the key
Broadcom Security Target
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] that meets the following: No Standard.
FCS_COP.1/DataEncryption Cryptographic Operation (AES Data
Encryption/Decryption)
FCS_COP.1.1/DataEncryption The TSF shall perform encryption/decryption in accordance with
a specified cryptographic algorithm AES used in [CBC, CTR, GCM]
mode and cryptographic key sizes [128 bits, 256 bits] that meet the
following: AES as specified in ISO 18033-3, [CBC as specified in ISO
10116, CTR as specified in ISO 10116, GCM as specified in ISO 19772].
FCS_COP.1/SigGen Cryptographic Operation (Signature Generation and
Verification)
FCS_COP.1.1/SigGen The TSF shall perform cryptographic signature services (generation and
verification) in accordance with a specified cryptographic algorithm [
• RSA Digital Signature Algorithm and cryptographic key sizes
(modulus) [2048 bits],
• Elliptic Curve Digital Signature Algorithm and cryptographic key sizes
[256 bits],
] that meet the following: [
• For RSA schemes: FIPS PUB 186-4, “Digital Signature Standard
(DSS)”, Section 5.5, using PKCS #1 v2.1 Signature Schemes
RSASSA-PSS and/or RSASSA-PKCS1v1_5; ISO/IEC 9796-2, Digital
signature scheme 2 or Digital Signature scheme 3,
• For ECDSA schemes: FIPS PUB 186-4, “Digital Signature Standard
(DSS)”, Section 6 and Appendix D, Implementing “NIST curves” [P-
256]; ISO/IEC 14888-3, Section 6.4]
FCS_COP.1/Hash Cryptographic Operation (Hash Algorithm)
FCS_COP.1.1/Hash The TSF shall perform cryptographic hashing services in accordance
with a specified cryptographic algorithm [SHA-1, SHA-256, SHA-384,
SHA-512] and cryptographic key sizes [assignment: cryptographic key
sizes] and message digest sizes [160, 256, 384, 512] bits that meet
the following: ISO/IEC 10118-3:2004.
FCS_COP.1/KeyedHash Cryptographic Operation (Keyed Hash Algorithm)
FCS_COP.1.1/KeyedHash The TSF shall perform keyed-hash message authentication in
accordance with a specified cryptographic algorithm [HMAC-SHA-256,
HMAC-SHA-512] and cryptographic key sizes [256, 512] and message
digest sizes [256, 512] bits that meet the following: ISO/IEC 9797-
2:2011, Section 7 “MAC Algorithm 2”.
FCS_NTP_EXT.1 NTP Protocol
FCS_NTP_EXT.1.1 The TSF shall use only the following NTP version(s) [NTP v4 (RFC
5905)].
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FCS_NTP_EXT.1.2 The TSF shall update its system time using [
• Authentication using [SHA1] as the message digest algorithm(s)]
FCS_NTP_EXT.1.3 The TSF shall not update NTP timestamp from broadcast and/or
multicast addresses.
FCS_NTP_EXT.1.4 The TSF shall support configuration of at least three (3) NTP time
sources.
FCS_RBG_EXT.1 Random Bit Generation
FCS_RBG_EXT.1.1 The TSF shall perform all deterministic random bit generation services in
accordance with ISO/IEC 18031:2011 using [HMAC_DRBG(SHA512),
CTR_DRBG (AES)].
FCS_RBG_EXT.1.2 The deterministic RBG shall be seeded by at least one entropy source
that accumulates entropy from [[one] software-based noise source] with
a minimum of [256 bits] of entropy at least equal to the greatest security
strength, according to ISO/IEC 18031:2011 Table C.1 “Security Strength
Table for Hash Functions”, of the keys and hashes that it will generate.
FCS_SSHC_EXT.1 SSH Client Protocol
FCS_SSHC_EXT.1.1 The TSF shall implement the SSH protocol that complies with: RFC(s)
4251, 4252, 4253, 4254, [4344, 5656, 6668, 8268, 8308 section 3.1,
8332].
FCS_SSHC_EXT.1.2 The TSF shall ensure that the SSH protocol implementation supports the
following authentication methods as described in RFC 4252: public key-
based, [no other method].
FCS_SSHC_EXT.1.3 The TSF shall ensure that, as described in RFC 4253, packets greater
than [256 kilo]bytes in an SSH transport connection are dropped.
FCS_SSHC_EXT.1.4 The TSF shall ensure that the SSH transport implementation uses the
following encryption algorithms and rejects all other encryption
algorithms: [aes128-ctr, aes256-ctr].
FCS_SSHC_EXT.1.5 The TSF shall ensure that the SSH public-key based authentication
implementation uses [ssh-rsa, rsa-sha2-256, rsa-sha2-512, ecdsa-sha2-
nistp256] as its public key algorithm(s) and rejects all other public key
algorithms.
FCS_SSHC_EXT.1.6 The TSF shall ensure that the SSH transport implementation uses
[hmac-sha2-256, hmac-sha2-512] as its MAC algorithm(s) and rejects all
other MAC algorithm(s).
FCS_SSHC_EXT.1.7 The TSF shall ensure that [diffie-hellman-group14-sha1] and [diffie-
hellman-group14-sha256, diffie-hellman-group16-sha512, diffie-hellman-
group18-sha512, ecdh-sha2-nistp521] are the only allowed key
exchange methods used for the SSH protocol.
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FCS_SSHC_EXT.1.8 The TSF shall ensure that within SSH connections, the same session
keys are used for a threshold of no longer than one hour, and each
encryption key is used to protect no more than one gigabyte of data.
After any of the thresholds are reached, a rekey needs to be performed.
FCS_SSHC_EXT.1.9 The TSF shall ensure that the SSH client authenticates the identity of the
SSH server using a local database associating each host name with its
corresponding public key and [no other methods] as described in RFC
4251 section 4.1.
FCS_SSHS_EXT.1 SSH Server Protocol
FCS_SSHS_EXT.1.1 The TSF shall implement the SSH protocol that complies with: RFC(s)
4251, 4252, 4253, 4254, [4344, 5656, 6668, 8268, 8308 section 3.1,
8332].
FCS_SSHS_EXT.1.2 The TSF shall ensure that the SSH protocol implementation supports the
following authentication methods as described in RFC 4252: public key-
based, [password based].
FCS_SSHS_EXT.1.3 The TSF shall ensure that, as described in RFC 4253, packets greater
than [256 kilo]bytes in an SSH transport connection are dropped.
FCS_SSHS_EXT.1.4 The TSF shall ensure that the SSH transport implementation uses the
following encryption algorithms and rejects all other encryption
algorithms: [aes128-ctr, aes256-ctr].
FCS_SSHS_EXT.1.5 The TSF shall ensure that the SSH public-key based authentication
implementation uses [ssh-rsa,rsa-sha2-256,rsa-sha2-512,ecdsa-sha2-
nistp256] as its public key algorithm(s) and rejects all other public key
algorithms.
FCS_SSHS_EXT.1.6 The TSF shall ensure that the SSH transport implementation uses
[hmac-sha2-256, hmac-sha2-512] as its MAC algorithm(s) and rejects all
other MAC algorithm(s).
FCS_SSHS_EXT.1.7 The TSF shall ensure that [diffie-hellman-group14-sha1] and [diffie-
hellman-group14-sha256, diffie-hellman-group16-sha512, diffie-hellman-
group18-sha512, ecdh-sha2-nistp521] are the only allowed key
exchange methods used for the SSH protocol.
FCS_SSHS_EXT.1.8 The TSF shall ensure that within SSH connections, the same session
keys are used for a threshold of no longer than one hour, and each
encryption key is used to protect no more than one gigabyte of data.
After any of the thresholds are reached, a rekey needs to be performed.
FCS_TLSS_EXT.1 TLS Server Protocol
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FCS_TLSS_EXT.1.1 The TSF shall implement [TLS 1.2 (RFC 5246), TLS 1.1 (RFC 4346)]
and reject all other TLS and SSL versions. The TLS implementation will
support the following ciphersuites:[
• TLS_RSA_WITH_AES_128_CBC_SHA as defined in RFC 3268
• TLS_RSA_WITH_AES_256_CBC_SHA as defined in RFC 3268
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA as defined in RFC
3268
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA as defined in RFC
3268
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA as defined in RFC
4492
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA as defined in RFC
4492
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA as defined in
RFC 4492
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA as defined in
RFC 4492
• TLS_RSA_WITH_AES_128_CBC_SHA256 as defined in RFC 5246
• TLS_RSA_WITH_AES_256_CBC_ SHA256 as defined in RFC 5246
• TLS_DHE_RSA_WITH_AES_128_CBC_ SHA256 as defined in RFC
5246
• TLS_DHE_RSA_WITH_AES_256_CBC_ SHA256 as defined in RFC
5246
• TLS_RSA_WITH_AES_128_GCM_SHA256 as defined in RFC 5288
• TLS_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5288
• TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 as defined in RFC
5288
• TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC
5288
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 as defined
in RFC 5289
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 as defined
in RFC 5289
• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 as defined
in RFC 5289
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 as defined
in RFC 5289
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 as defined in
RFC 5289
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 as defined in
RFC 5289
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 as defined in
RFC 5289
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• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 as defined in
RFC 5289]
and no other ciphersuites.
FCS_TLSS_EXT.1.2 The TSF shall deny connections from clients requesting SSL 2.0, SSL
3.0, TLS 1.0 and [none].
FCS_TLSS_EXT.1.3 The TSF shall perform key establishment for TLS using [RSA with key
size [2048 bits], Diffie-Hellman groups [ffdhe2048], ECDHE curves
[secp256r1, secp384r1, secp521r1] and no other curves]].
FCS_TLSS_EXT.1.4 The TSF shall support [no session resumption or session tickets].
5.3.3 Identification and Authentication (FIA)
FIA_AFL.1 Authentication Failure Management
FIA_AFL.1.1 The TSF shall detect when an Administrator configurable positive integer
within [1-20] unsuccessful authentication attempts occur related to
Administrators attempting to authenticate remotely using a password.
FIA_AFL.1.2 When the defined number of unsuccessful authentication attempts has
been met, the TSF shall [prevent the offending Administrator from
successfully establishing a remote session using any authentication
method that involves a password until an Administrator defined time
period has elapsed].
FIA_PMG_EXT.1 Password Management
FIA_PMG_EXT.1.1 The TSF shall provide the following password management capabilities
for administrative passwords:
a) Passwords shall be able to be composed of any combination of
upper and lower case letters, numbers, and the following special
characters: [ “!”, “@”, “#”, “$”, “%”, “^”, “&”, “*”, “(“, “)”];
b) Minimum password length shall be configurable to between [8] and
[128] characters.
FIA_UIA_EXT.1 User Identification and Authentication
FIA_UIA_EXT.1.1 The TSF shall allow the following actions prior to requiring the non-TOE
entity to initiate the identification and authentication process:
• Display the warning banner in accordance with FTA_TAB.1;
• [[no other actions]]
FIA_UIA_EXT.1.2 The TSF shall require each administrative user to be successfully
identified and authenticated before allowing any other TSF-mediated
actions on behalf of that administrative user.
FIA_UAU_EXT.2 Password-based Authentication Mechanism
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FIA_UAU_EXT.2.1 The TSF shall provide a local [password-based, SSH public key-based]
authentication mechanism to perform local administrative user
authentication.
FIA_UAU.7 Protected Authentication Feedback
FIA_UAU.7.1 The TSF shall provide only obscured feedback to the administrative user
while the authentication is in progress at the local console.
FIA_X509_EXT.1/Rev X.509 Certificate Validation
FIA_X509_EXT.1.1/Rev The TSF shall validate certificates in accordance with the following rules:
• RFC 5280 certificate validation and certification path validation
supporting a minimum path length of three certificates.
• The certification path must terminate with a trusted CA certificate
designated as a trust anchor.
• The TSF shall validate a certification path by ensuring that all CA
certificates in the certification path contain the basicConstraints
extension with the CA flag set to TRUE.
• The TSF shall validate the revocation status of the certificate using
[Certificate Revocation List (CRL) as specified in RFC 5759 Section
5].
• The TSF shall validate the extendedKeyUsage field according to the
following rules:
o Certificates used for trusted updates and executable code
integrity verification shall have the Code Signing purpose (id-
kp 3 with OID 1.3.6.1.5.5.7.3.3) in the extendedKeyUsage
field.
o Server certificates presented for TLS shall have the Server
Authentication purpose (id-kp 1 with OID 1.3.6.1.5.5.7.3.1) in
the extendedKeyUsage field.
o Client certificates presented for TLS shall have the Client
Authentication purpose (id-kp 2 with OID 1.3.6.1.5.5.7.3.2) in
the extendedKeyUsage field.
o OCSP certificates presented for OCSP responses shall have
the OCSP Signing purpose (id-kp 9 with OID
1.3.6.1.5.5.7.3.9) in the extendedKeyUsage field.
FIA_X509_EXT.1.2/Rev The TSF shall only treat a certificate as a CA certificate if the
basicConstraints extension is present and the CA flag is set to TRUE.
FIA_X509_EXT.2 X.509 Certificate Authentication
FIA_X509_EXT.2.1 The TSF shall use X.509v3 certificates as defined by RFC 5280 to
support authentication for [TLS] and [no additional uses].
FIA_X509_EXT.2.2 When the TSF cannot establish a connection to determine the validity of
a certificate, the TSF shall [accept the certificate].
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FIA_X509_EXT.3 X.509 Certificate Requests
FIA_X509_EXT.3.1 The TSF shall generate a Certificate Request as specified by RFC 2986
and be able to provide the following information in the request: public key
and [Common Name, Organization, Organizational Unit, Country].
FIA_X509_EXT.3.2 The TSF shall validate the chain of certificates from the Root CA upon
receiving the CA Certificate Response.
5.3.4 Security Management (FMT)
FMT_MOF.1/ManualUpdate Management of security functions behaviour
FMT_MOF.1.1/ManualUpdate The TSF shall restrict the ability to enable the functions to
perform manual updates to Security Administrators.
FMT_MTD.1/CoreData Management of TSF Data
FMT_MTD.1.1/CoreData The TSF shall restrict the ability to manage the TSF data to
Security Administrators.
FMT_MTD.1/CryptoKeys Management of TSF data
FMT_MTD.1.1/CryptoKeys The TSF shall restrict the ability to manage the cryptographic
keys to Security Administrators.
FMT_SMF.1 Specification of Management Functions
FMT_SMF.1.1 The TSF shall be capable of performing the following management
functions:
• Ability to administer the TOE locally and remotely;
• Ability to configure the access banner;
• Ability to configure the session inactivity time before session
termination or locking;
• Ability to update the TOE, and to verify the updates using [digital
signature] capability prior to installing those updates;
• Ability to configure the authentication failure parameters for
FIA_AFL.1;
• [
o Ability to modify the behaviour of the transmission of audit
data to an external IT entity;
o Ability to manage the cryptographic keys;
o Ability to configure the cryptographic functionality;
o Ability to configure NTP;
o Ability to manage the TOE's trust store and designate
X509.v3 certificates as trust anchors;
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o Ability to import X.509v3 certificates to the TOE's trust store;
]
FMT_SMR.2 Restrictions on Security Roles
FMT_SMR.2.1 The TSF shall maintain the roles:
• Security Administrator.
FMT_SMR.2.2 The TSF shall be able to associate users with roles.
FMT_SMR.2.3 The TSF shall ensure that the conditions
• The Security Administrator role shall be able to administer the TOE
locally;
• The Security Administrator role shall be able to administer the TOE
remotely
are satisfied.
5.3.5 Protection of the TSF (FPT)
FPT_SKP_EXT.1 Protection of TSF Data (for reading of all pre-shared,
symmetric and private keys)
FPT_SKP_EXT.1.1 The TSF shall prevent reading of all pre-shared keys, symmetric keys,
and private keys.
FPT_APW_EXT.1 Protection of Administrator Passwords
FPT_APW_EXT.1.1 The TSF shall store administrative passwords in non-plaintext form.
FPT_APW_EXT.1.2 The TSF shall prevent the reading of plaintext administrative passwords.
FPT_TST_EXT.1 TSF testing
FPT_TST_EXT.1.1 The TSF shall run a suite of the following self-tests [during initial start-up
(on power on), at the request of the authorised user] to demonstrate the
correct operation of the TSF: [
• Image integrity validation
• Cryptographic module tests].
FPT_TUD_EXT.1 Trusted update
FPT_TUD_EXT.1.1 The TSF shall provide Security Administrators the ability to query the
currently executing version of the TOE firmware/software and [no other
TOE firmware/software version].
FPT_TUD_EXT.1.2 The TSF shall provide Security Administrators the ability to manually
initiate updates to TOE firmware/software and [no other update
mechanism].
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FPT_TUD_EXT.1.3 The TSF shall provide means to authenticate firmware/software updates
to the TOE using a [digital signature] prior to installing those updates.
FPT_STM_EXT.1 Reliable Time Stamps
FPT_STM_EXT.1.1 The TSF shall be able to provide reliable time stamps for its own use.
FPT_STM_EXT.1.2 The TSF shall [synchronize time with an NTP server].
5.3.6 TOE Access (FTA)
FTA_SSL_EXT.1 TSF-initiated Session Locking
FTA_SSL_EXT.1.1 The TSF shall, for local interactive sessions, [
• terminate the session]
after a Security Administrator-specified time period of inactivity.
FTA_SSL.3 TSF-initiated Termination
FTA_SSL.3.1 The TSF shall terminate a remote interactive session after a Security
Administrator-configurable time interval of session inactivity.
FTA_SSL.4 User-initiated Termination
FTA_SSL.4.1 Refinement: The TSF shall allow Administrator-initiated termination of
the Administrator’s own interactive session.
FTA_TAB.1 Default TOE Access Banners
FTA_TAB.1.1 Before establishing an administrative user session the TSF shall
display a Security Administrator-specified advisory notice and
consent warning message regarding use of the TOE.
5.3.7 Trusted path/channels (FTP)
FTP_ITC.1 Inter-TSF trusted channel
FTP_ITC.1.1 The TSF shall be capable of using [SSH] to provide a trusted
communication channel between itself and authorized IT entities
supporting the following capabilities: audit server, [no other
capabilities] that is logically distinct from other communication channels
and provides assured identification of its end points and protection of the
channel data from disclosure and detection of modification of the
channel data.
FTP_ITC.1.2 The TSF shall permit the TSF or the authorized IT entities to initiate
communication via the trusted channel.
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FTP_ITC.1.3 The TSF shall initiate communication via the trusted channel for [audit
server].
FTP_TRP.1 /Admin Trusted Path
FTP_TRP.1.1/Admin The TSF shall be capable of using [SSH, TLS] to provide a
communication path between itself and authorized remote
Administrators that is logically distinct from other communication paths
and provides assured identification of its end points and protection of the
communicated data from disclosure and provides detection of
modification of the channel data.
FTP_TRP.1.2 /Admin The TSF shall permit remote Administrators to initiate communication
via the trusted path.
FTP_TRP.1.3 /Admin The TSF shall require the use of the trusted path for initial Administrator
authentication and all remote administration actions.
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5.4 Assurance Requirements
20 The TOE security assurance requirements are summarized in Table 12
Table 12: Assurance Requirements
Assurance Class Components Description
Security Target
Evaluation
ASE_CCL.1 Conformance Claims
ASE_ECD.1 Extended Components Definition
ASE_INT.1 ST Introduction
ASE_OBJ.1 Security Objectives for the operational environment
ASE_REQ.1 Stated Security Requirements
ASE_SPD.1 Security Problem Definition
ASE_TSS.1 TOE Summary Specification
Development ADV_FSP.1 Basic Functional Specification
Guidance Documents AGD_OPE.1 Operational User Guidance
AGD_PRE.1 Preparative User Guidance
Life Cycle Support ALC_CMC.1 Labelling of the TOE
ALC_CMS.1 TOE CM Coverage
Tests ATE_IND.1 Independent Testing - conformance
Vulnerability Assessment AVA_VAN.1 Vulnerability Analysis
21 In accordance with section 7.1 of the NDcPP, the following refinement is made to
ASE:
a) ASE_TSS.1.1C Refinement: The TOE summary specification shall describe
how the TOE meets each SFR. In the case of entropy analysis, the TSS is
used in conjunction with required supplementary information on
Entropy.
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6 TOE Summary Specification
22 The following describes how the TOE fulfils each SFR included in section 5.3.
6.1 Security Audit
6.1.1 FAU_GEN.1
23 The TOE generates the audit records specified at FAU_GEN.1 containing fields that
include the timestamp, IP address (if applicable), action, user (if applicable) and a
contextual message indicating success or failure of the action.
24 The following information is logged as a result of the Security Administrator
generating/importing or deleting cryptographic keys:
a) Generate SSH Private Key. Action and key reference.
b) Generate TLS Server Private Key. Action and key reference.
6.1.2 FAU_GEN.2
25 The TOE includes the user identity in audit events resulting from actions of identified
users.
6.1.3 FAU_STG_EXT.1
26 Log files are transferred via SSH (see FCS_SSHC_EXT.1) to the external syslog
server. Logs are transmitted in real time.
27 Logs are stored locally in rotating log files as follows:
a) /var/log log files. Logs are rotated weekly and up to 4 weeks of logs are kept
before being removed.
b) Policy Manager ssg log file. up to 20MB of log data is kept until they are
rotated. A total of 9 previous logs are kept (plus the live log).
28 Logs are overwritten by removing the oldest records first.
29 Only authorized administrators may view audit records and no capability to modify
the audit records is provided.
6.2 Cryptographic Support
6.2.1 FCS_CKM.1
30 The TOE supports key generation for the following asymmetric schemes:
a) RSA Scheme. Key sizes of 2048 used in SSH and 2048-bit used in TLS
communications.
b) ECC P-256, P-384, P-521. P-256 is used in SSH authentication and key
exchange and P-256, P-384, P-521 used in TLS.
c) FFC Safe Primes. Used in SSH key exchange and TLS.
31 The OpenSSL cryptographic module is implemented when generating SSH keys and
the CryptoComply cryptographic module is implemented when generating TLS keys.
6.2.2 FCS_CKM.2
32 The TOE supports the following key establishment schemes:
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a) RSA schemes. Used in SSH and TLS communications.
b) ECC schemes. Used in SSH key exchange and TLS. TOE is both sender and
receiver.
c) FFC schemes using safe primes. Used in SSH key exchange and TLS. TOE
is both sender and receiver. The following Diffie Helman groups are supported
for SSH:
i) Group 14 per RFC 3526 section 3
ii) Group 16 per RFC 3526 section 5
iii) Group 18 per RFC 3526 section 7
33 The OpenSSL cryptographic module is implemented in SSH communications and
the CryptoComply cryptographic module is implemented in TLS communications.
34 Table 13 below identifies the scheme being used by each service.
Table 13: Key Agreement Mapping
Scheme SFR Service
RSA Schemes FCS_TLSS_EXT.1 Administration
ECC FCS_SSHS_EXT.1 Administration
FCS_SSHC_EXT.1 Audit Server
FCS_TLSS_EXT.1 Administration
FFC Safe Primes FCS_SSHS_EXT.1 Administration
FCS_SSHC_EXT.1 Audit Server
FCS_TLSS_EXT.1 Administration
6.2.3 FCS_CKM.4
35 Table 15 shows the origin, storage location and destruction details for cryptographic
keys. Unless otherwise stated, the keys are generated by the TOE.
6.2.4 FCS_COP.1/DataEncryption
36 The TOE provides symmetric encryption and decryption capabilities using 128 and
256 bit AES in CTR, CBC and GCM mode. AES is implemented in SSH.
37 The relevant NIST CAVP certificate numbers are listed Table 4.
6.2.5 FCS_COP.1/SigGen
38 The TOE provides cryptographic signature generation and verification services
using:
a) RSA Signature Algorithm with key size of 2048 bits in SSH and in TLS
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b) Elliptic Curve Digital Signature Algorithm with key sizes of 256 in SSH, and
256, 384 and 521 for TLS.
39 The RSA signature verification services are used in the SSH and TLS protocol and
TOE firmware integrity checks.
40 The ECDSA signature verification services are used in the SSH and TLS protocol.
41 The relevant NIST CAVP certificate numbers are listed in Table 4.
42 The OpenSSL cryptographic module is implemented in SSH communications and
TOE firmware integrity checks.
43 The CryptoComply cryptographic module is implemented in TLS communications.
6.2.6 FCS_COP.1/Hash
44 The TOE provides cryptographic hashing services using SHA-1, SHA-256, SHA-384
and SHA-512.
45 SHA is implemented in the following parts of the TSF:
a) SSH;
b) Digital signature verification as part of trusted update validation; and
c) Hashing of passwords in non-volatile storage.
46 The relevant NIST CAVP certificate numbers are listed in Table 4.
6.2.7 FCS_COP.1/KeyedHash
47 The TOE provides keyed-hashing message authentication services using HMAC-
SHA-256, and HMAC-SHA-512.
48 HMAC is implemented in SSH.
49 The characteristics of the HMACs used in the TOE are given in Table 14.
Table 14: HMAC Characteristics
Algorithm Block Size Key Size Digest Size
HMAC-SHA-256 512 bits 256 bits 256 bits
HMAC-SHA-512 1024 bits 512 bits 512 bits
50 The relevant NIST CAVP certificate numbers are listed in Table 4.
6.2.8 FCS_NTP_EXT.1
51 The TOE supports NTPv4 using SHA-1 authentication. The TOE allows
configuration of up to 3 NTP servers. The TOE uses pre-shared keys for
authentication and integrity of the NTP server when synchronizing the time.
6.2.9 FCS_RBG_EXT.1
52 The TOE contains two cryptographic modules. The OpenSSL module implements a
CTR_DRBG that is seeded from a software provided entropy source. Entropy from
the noise is conditioned and used to seed the DRBG with 384 bits of full entropy.
The CryptoComply Java cryptographic module implements an HMAC_DRBG that is
seeded from a software provided entropy source. Entropy from the noise is
conditioned and used to seed the DRGB with 512 bits of full entropy.
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53 Additional detail is provided the proprietary Entropy Description.
6.2.10 FCS_SSHC_EXT.1
54 The TOE implements SSH in compliance with RFCs 4251, 4252, 4253, 4254, 4344,
5656, 6668, 8268, 8308 section 3.1 and 8332.
55 The TOE supports public key authentication with the following algorithms, rsa-sha2-
512, ecdsa-sha2-nistp256 for user public keys.
56 In the case of public keys, the TOE authenticates the identity of the SSH server
using a local database associating authorized hosts with its corresponding public
key. The TOE supports ssh-rsa, rsa-sha2-256, rsa-sha2-512, ecdsa-sha2-nistp256
host key algorithms to associate server identity when authenticating external SSH
servers.
57 The TOE examines the size of each received SSH packet. If the packet is greater
than 256 KB, it is automatically dropped.
58 The TOE utilises AES-CTR-128 and AES-CTR-256 for SSH encryption.
59 The TOE provides data integrity for SSH connections via HMAC-SHA2-256 and
HMAC-SHA2-512.
60 The TOE supports diffie-hellman-group14-sha1, diffie-hellman-group14-sha256,
diffie-hellman-group16-sha512, diffie-hellman-group18-sha512 and ecdh-sha2-
nistp521 for SSH key exchanges.
61 The TOE will re-key SSH connections after 30 minutes or after an aggregate of 512
megabytes of data has been exchanged (whichever occurs first).
6.2.11 FCS_SSHS_EXT.1
62 The TOE implements SSH in compliance with RFCs 4251, 4252, 4253, 4254, 4344,
5656, 6668, 8268, 8308 section 3.1 and 8332.
63 The TOE supports password-based or public key authentication (rsa-sha2-256, rsa-
sha2-512, ecdsa-sha2-nistp256). In the case of public keys, the TOE authenticates
the identity of the SSH client using a local database associating authorized hosts
with its corresponding public key.
64 The TOE supports the following host key algorithms, ssh-rsa, rsa-sha2-256, rsa-
sha2-512.
65 The TOE examines the size of each received SSH packet. If the packet is greater
than 256 KB, it is automatically dropped.
66 The TOE utilises AES-CTR-128 and AES-CTR-256 for SSH encryption.
67 The TOE provides data integrity for SSH connections via HMAC-SHA2-256 and
HMAC-SHA2-512.
68 The TOE supports diffie-hellman-group14-sha1, diffie-hellman-group14-sha256,
diffie-hellman-group16-sha512, diffie-hellman-group18-sha512 and ecdh-sha2-
nistp521 for SSH key exchanges.
69 The TOE will re-key SSH connections after 30 minutes or after an aggregate of 512
megabytes of data has been exchanged (whichever occurs first).
6.2.12 FCS_TLSS_EXT.1
70 The TOE accepts TLS 1.2, TLS 1.1 and rejects all other TLS and SSL versions.
71 The TOE restricts TLS to the following ciphersuites:
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a) TLS_RSA_WITH_AES_128_CBC_SHA as defined in RFC 3268
b) TLS_RSA_WITH_AES_256_CBC_SHA as defined in RFC 3268
c) TLS_DHE_RSA_WITH_AES_128_CBC_SHA as defined in RFC 3268
d) TLS_DHE_RSA_WITH_AES_256_CBC_SHA as defined in RFC 3268
e) TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA as defined in RFC 4492
f) TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA as defined in RFC 4492
g) TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA as defined in RFC 4492
h) TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA as defined in RFC 4492
i) TLS_RSA_WITH_AES_128_CBC_SHA256 as defined in RFC 5246
j) TLS_RSA_WITH_AES_256_CBC_ SHA256 as defined in RFC 5246
k) TLS_DHE_RSA_WITH_AES_128_CBC_ SHA256 as defined in RFC 5246
l) TLS_DHE_RSA_WITH_AES_256_CBC_ SHA256 as defined in RFC 5246
m) TLS_RSA_WITH_AES_128_GCM_SHA256 as defined in RFC 5288
n) TLS_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5288
o) TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 as defined in RFC 5288
p) TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5288
q) TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 as defined in RFC
5289
r) TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 as defined in RFC
5289
s) TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 as defined in RFC
5289
t) TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 as defined in RFC
5289
u) TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 as defined in RFC 5289
v) TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5289
w) TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 as defined in RFC 5289
x) TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 as defined in RFC 5289
72 Ciphersuites are user configurable.
73 The TOE performs key establishment for TLS using RSA with key size of 2048-bit,
Diffie-hellman group ffdhe2048, and ECDHE curves secp256r1, secp384r1,
secp521r1 and no other curves.
74 The TOE does not support session resumption or session tickets.
6.3 Identification and Authentication
6.3.1 FIA_PMG_EXT.1
75 The TOE supports the local definition of users with corresponding passwords. The
passwords can be composed of any combination of upper and lower case letters,
numbers, and special characters “!”, “@”, “#”, “$”, “%”, “^”, “&”, “*”, “(“, “)”.
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76 The minimum password length is configurable by the Administrator and can range
from 8 to 128 characters.
6.3.2 FIA_UIA_EXT.1
77 The TOE requires all users to be successfully identified and authenticated. The TOE
warning banner is displayed prior to authentication.
78 Administrative access to the TOE is facilitated through several interfaces:
a) CLI. Administrative CLI via virtual serial connection.
b) SSH CLI. Administrative CLI via SSH.
c) Policy Manager. Administrative thick client GUI over connected to a TLS
Proxy application from the Client machine then connected to the TOE via TLS.
6.3.3 FIA_UAU_EXT.2
79 Regardless of the interface at which the administrator interacts, the TOE prompts the
user for a credential. Only after the administrative user presents the correct
authentication credentials will they be granted access to the TOE administrative
functionality. No TOE administrative access is permitted until an administrator is
successfully identified and authenticated.
80 The TOE provides a local password-based authentication mechanism and also
supports SSH public key authentication.
81 The process for authentication is the same for administrative access whether
administration is occurring via direct connection or remotely. At initial login, the
administrative user is prompted to provide a username. After the user provides the
username, the user is prompted to provide the administrative credential associated
with the user account (e.g. password or SSH public/private key response). The TOE
then either grants administrative access (if the combination of username and
credential is correct) or indicates that the login was unsuccessful. The TOE does not
provide a reason for failure in the cases of a login failure.
6.3.4 FIA_UAU.7
82 For all authentication at the local CLI the TOE provides no feedback when the
administrative password is entered so that the password is obscured.
6.3.5 FIA_AFL.1
83 The TOE is capable of tracking authentication failures of remote administrators.
84 When a user account has sequentially failed authentication the configured number of
times the account will be locked for a Security Administrator defined time period.
85 The local console does not implement the lockout mechanism.
6.3.6 FIA_X509_EXT.1/Rev
86 The TOE performs X.509 certificate validation at the following points:
a) TOE TLS client validation of server X.509 certificates;
b) When certificates are loaded into the TOE, such as when importing CAs,
certificate responses and other device-level certificates
c) In all scenarios, certificates are checked for several validation characteristics:
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d) If the certificate ‘notAfter’ date is in the past, then this is an expired certificate
which is considered invalid;
e) The certificate chain must terminate with a trusted CA certificate;
f) Server certificates consumed by the TOE TLS client must have a
‘serverAuthentication’ extendedKeyUsage purpose;
g) The TOE validates a certificate path and treats a certificate as a CA certificate
when certificates include the basicConstraints extensions and that the CA flag
is set to “TRUE” for all CA certificates.
87 Certificate revocation checking for the above scenarios is performed using CRLs.
88 As X.509 certificates are not used for trusted updates, firmware integrity self-tests or
client authentication, the code-signing and clientAuthentication purpose is not
checked in the extendedKeyUsage for related certificates.
89 The TOE ensures that the X.509 certificates adhere to RFC 5280 Section 6.3
(certificate validation and certificate path validation), which can be summarized as
follows:
a) The public key algorithm and parameters are checked
b) The current date/time is checked against the validity period revocation status
is checked
c) Issuer name of X matches the subject name of X+1
d) Name constraints are checked
e) Policy OIDs are checked
f) Policy constraints are checked; issuers are ensured to have CA signing bits
g) Path length is checked
h) Critical extensions are processed
90 If, during the entire trust chain verification activity, any certificate under review fails a
verification check, then the entire trust chain is deemed untrusted.
6.3.7 FIA_X509_EXT.2
91 The TOE has a trust store where root CA and intermediate CA certificates can be
stored. The trust store is not cached: if a certificate is deleted, it is immediately
untrusted. If a certificate is added to the trust store, it is immediately trusted for its
given scope. The use of the trust store is restricted to Security Administrators.
92 Instructions for configuring the trusted IT entities to supply appropriate X.509
certificates are captured in the guidance documents.
93 As part of the verification process, a CRL route is used to determine whether the
certificate is revoked or not. If the validity of the certificate cannot be established,
the validation will pass.
6.3.8 FIA_X509_EXT.3
94 The TOE generates Certificate Requests that provide public key, Common Name,
Organization, Organizational Unit and Country information.
95 The TOE validates the chain of certificates from the Root CA when receiving the CA
Certificate Response.
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6.4 Security Management
6.4.1 FMT_MOF.1/ManualUpdate
96 The TOE restricts the ability to perform software updates to Security Administrators.
6.4.2 FMT_MTD.1/CoreData
97 Users are required to login before being provided with access to any administrative
functions.
6.4.3 FMT_SMR.2
98 The following user accounts are available, which are all Security Administrators:
a) ssgconfig. This account is used to access the CLI and SSH CLI.
b) ssgadmin. This account is used to access the CLI and SSH CLI
c) Admin. This account is used to access the Policy Manager thick client GUI.
99 Management of TSF data is restricted to Security Administrators.
6.4.4 FMT_SMF.1
100 The TOE provides the following management capabilities:
a) Ability to administer the TOE locally (virtual serial) and remotely (SSH and
thick client GUI)
b) Ability to configure the access banner via CLI, SSH CLI or thick client GUI
c) Ability to configure the session inactivity time before session termination
i) The CLI / SSH CLI timeout value is set via the CLI, SSH CLI
ii) The thick client GUI timeout value is via the thick client GUI
d) Ability to update the TOE and to verify the updates via CLI or SSH CLI
e) Ability to configure the authentication failure parameters via CLI, SSH CLI or
thick client GUI
f) Ability to manage the cryptographic keys (generating, importing, modifying,
and deleting SSH keys) via CLI or SSH CLI
g) Ability to manage the cryptographic keys (generating, importing, modifying,
and deleting X509 keys) via thick client GUI
h) Ability to configure the cryptographic functionality (SSH configuration and
X509 configuration) via CLI or SSH CLI
i) Ability to configure the cryptographic functionality (X509 configuration) via
thick client GUI
j) Ability to configure NTP via the CLI or SSH CLI
6.4.5 FMT_MTD.1/CryptoKeys
101 The TOE restricts management of cryptographic keys to Security Administrators
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6.5 Protection of the TSF
6.5.1 FPT_SKP_EXT.1
102 Keys are protected as described in Table 15. In all cases, plaintext keys cannot be
viewed through an interface designed specifically for that purpose.
Table 15: Keys
Key Algorithm Storage Zeroization
SSH Private
Keys
ECDSA, RSA Flash -
plaintext
Stored in a protected file on the Gateway
OS with root access only.
The administrator may zeroize this key
using the shred command. This causes a
three pass overwrite of the file holding the
key.
SSH Ephemeral
Keys
AES / DH /
ECDH
RAM –
plaintext
OpenSSL ensures that keys (including re-
keyed keys) are overwritten with zeroes
when no longer required.
NTP Key SHA-1 Flash -
plaintext
Keys are destroyed when generating new
keys by deleting the previous file and
creating a new file. Initiated via CLI
command by the Security Administrator.
TLS Server
Private Keys
ECDSA, RSA Encrypted
PKCS#12
Stored in encrypted PKCS#12 keystore in
the Internal DB using AES-256 (CBC).
TLS Server
Ephemeral Keys
ECDHE, DHE,
RSA
RAM -
plaintext
CryptoComply ensures that keys are
overwritten with zeroes when no longer
required.
6.5.2 FPT_APW_EXT.1
103 Passwords are protected as describe in Table 16. In all cases plaintext passwords
cannot be viewed through an interface designed specifically for that purpose.
Table 16: Passwords
Key/Password Generation/ Algorithm Storage
Locally stored administrator
passwords
User generated Flash - SHA-512 hash
Policy Manager administrator
passwords
User generated Stored in encrypted fields in
the Internal DB using AES-256
(CBC).
TOE logic prevents display of
plaintext passwords and PEM
keys to users.
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6.5.3 FPT_TST_EXT.1
104 At startup, the TOE undergoes the following tests:
a) Image verification and integrity validation.
b) CryptoComply cryptographic self-tests.
c) OpenSSL cryptographic module self-tests
The Administrator can also perform integrity validation tests manually via SSH or
local CLI.
105 These tests ensure the correct operation of the cryptographic functionality of the
TOE and verify that the correct TOE image is being used. The cryptographic
functionality will not be available if the tests fail, and any operation of the TOE
supported by this functionality will not be available. When the device completes the
boot up operation, this is evidence that the self-tests have passed, and that the TOE,
and the cryptographic functions are operating correctly.
6.5.4 FPT_TUD_EXT.1
106 The current firmware version may be queried using the CLI or SSH CLI.
107 The Security Administrator manually initiates TOE updates from the CLI or SSH CLI.
TOE update files must first be copied to the TOE and then using the “Patch
Management” menu, select “Upload” then “Install” via the appropriate menu options.
108 TOE update files are digitally signed (RSA) and the signature is verified using a
hardcoded public key prior to installation of the update. If verification fails, the update
is aborted, and an error message is displayed. If the update succeeds, a message
indicating the TOE must be rebooted to apply all changes will appear.
6.5.5 FPT_STM_EXT.1
109 The TOE makes use of NTP to maintain date and time.
110 The TOE makes use of time for the following:
a) Audit record timestamps
b) Session timeouts (lockout enforcement)
c) Certificate Expiration Validation.
d) Cryptographic functions.
6.6 TOE Access
6.6.1 FTA_SSL_EXT.1
111 The Security Administrator may configure the TOE to terminate an inactive local
interactive session following a specified period of time. This is applicable to the local
CLI.
6.6.2 FTA_SSL.3
112 The Security Administrator may configure the TOE to terminate an inactive remote
interactive session following a specified period of time. This is applicable to the CLI,
SSH CLI and thick client GUI.
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6.6.3 FTA_SSL.4
113 Administrative users may terminate their own sessions at any time.
6.6.4 FTA_TAB.1
114 The TOE displays an administrator configurable message to users prior to login at
the CLI, SSH CLI, and Policy Manager GUI.
6.7 Trusted Path/Channels
6.7.1 FTP_ITC.1
115 The TOE supports secure communication with the following IT entities:
a) Audit server per FCS_SSHC_EXT.1
6.7.2 FTP_TRP.1/Admin
116 The TOE provides the following trusted paths for remote administration:
a) SSH. Administrative CLI via SSH per FCS_SSHS_EXT.1.
b) Policy Manager. Administrative Java Client via TLS per FCS_TLSS_EXT.1.
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7 Rationale
7.1 Conformance Claim Rationale
117 The following rationale is presented with regard to the PP conformance claims:
a) TOE type. As identified in section 2.1, the TOE is network device, consistent
with the NDcPP.
b) Security problem definition. As shown in section 3, the threats, OSPs and
assumptions are reproduced directly from the NDcPP.
c) Security objectives. As shown in section 4, the security objectives are
reproduced directly from the NDcPP.
d) Security requirements. As shown in section 5, the security requirements are
reproduced directly from the NDcPP. No additional requirements have been
specified.
7.2 Security Objectives Rationale
118 All security objectives are drawn directly from the NDcPP.
7.3 Security Requirements Rationale
119 All security requirements are drawn directly from the NDcPP. Table 17 presents a
mapping between threats and SFRs as presented in the NDcPP.
Table 17: NDcPP SFR Rationale
Identifier SFR Rationale
T.UNAUTHORIZED_ADMINIS
TRATOR_ACCESS
• The Administrator role is defined in FMT_SMR.2 and the
relevant administration capabilities are defined in
FMT_SMF.1 and FMT_MTD.1/CoreData, with optional
additional capabilities in FMT_MOF.1/Services and
FMT_MOF.1/Functions
• The actions allowed before authentication of an
Administrator are constrained by FIA_UIA_EXT.1, and
include the advisory notice and consent warning message
displayed according to FTA_TAB.1
• The requirement for the Administrator authentication
process is described in FIA_UAU_EXT.2
• Locking of Administrator sessions is ensured by
FTA_SSL_EXT.1 (for local sessions), FTA_SSL.3 (for
remote sessions), and FTA_SSL.4 (for all interactive
sessions)
• The secure channel used for remote Administrator
connections is specified in FTP_TRP.1/Admin
• (Malicious actions carried out from an Administrator session
are separately addressed by T.UNDETECTED_ACTIVITY)
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Identifier SFR Rationale
• (Protection of the Administrator credentials is separately
addressed by T.PASSWORD_CRACKING).
T.WEAK_CRYPTOGRAPHY
• Requirements for key generation and key distribution are
set in FCS_CKM.1 and FCS_CKM.2 respectively
• Requirements for use of cryptographic schemes are set in
FCS_COP.1/DataEncryption, FCS_COP.1/SigGen,
FCS_COP.1/Hash, and FCS_COP.1/KeyedHash
• Requirements for random bit generation to support key
generation and secure protocols (see SFRs resulting from
T.UNTRUSTED_COMMUNICATION_CHANNELS) are set
in FCS_RBG_EXT.1
• Management of cryptographic functions is specified in
FMT_SMF.1
T.UNTRUSTED_COMMUNI
CATION_CHANNELS
• The general use of secure protocols for identified
communication channels is described at the top level in
FTP_ITC.1 and FTP_TRP.1/Admin; for distributed TOEs the
requirements for inter-component communications are
addressed by the requirements in FPT_ITT.1
• Requirements for the use of secure communication
protocols are set for all the allowed protocols in
FCS_DTLSC_EXT.1, FCS_DTLSC_EXT.2,
FCS_DTLSS_EXT.1, FCS_DTLSS_EXT.2,
FCS_HTTPS_EXT.1, FCS_IPSEC_EXT.1,
FCS_SSHC_EXT.1, FCS_SSHS_EXT.1,
FCS_TLSC_EXT.1, FCS_TLSC_EXT.2, FCS_TLSS_EXT.1,
FCS_TLSS_EXT.2
• Optional and selection-based requirements for use of public
key certificates to support secure protocols are defined in
FIA_X509_EXT.1, FIA_X509_EXT.2, FIA_X509_EXT.3
T.WEAK_AUTHENTICATIO
N_ENDPOINTS
• The use of appropriate secure protocols to provide
authentication of endpoints (as in the SFRs addressing
T.UNTRUSTED_COMMUNICATION_CHANNELS) are
ensured by the requirements in FTP_ITC.1 and
FTP_TRP.1/Admin; for distributed TOEs the authentication
requirements for endpoints in inter-component
communications are addressed by the requirements in
FPT_ITT.1
• Additional possible special cases of secure authentication
during registration of distributed TOE components are
addressed by FCO_CPC_EXT.1 and FTP_TRP.1/Join.
T.UPDATE_COMPROMISE • Requirements for protection of updates are set in
FPT_TUD_EXT.1
• Additional optional use of certificate-based protection of
signatures can be specified using FPT_TUD_EXT.2,
supported by the X.509 certificate processing requirements
in FIA_X509_EXT.1, FIA_X509_EXT.2 and
FIA_X509_EXT.3
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Identifier SFR Rationale
• Requirements for management of updates are defined in
FMT_SMF.1 and (for manual updates) in
FMT_MOF.1/ManualUpdate, with optional requirements for
automatic updates in FMT_MOF.1/AutoUpdate
T.UNDETECTED_ACTIVITY • Requirements for basic auditing capabilities are specified in
FAU_GEN.1 and FAU_GEN.2, with timestamps provided
according to FPT_STM_EXT.1 and if applicable, protection
of NTP channels in FCS_NTP_EXT.1
• Requirements for protecting audit records stored on the
TOE are specified in FAU_STG.1
• Requirements for secure transmission of local audit records
to an external IT entity via a secure channel are specified in
FAU_STG_EXT.1
• Optional additional requirements for dealing with potential
loss of locally stored audit records are specified in
FAU_STG_EXT.2/LocSpace, and
FAU_STG_EXT.3/LocSpace
• If (optionally) configuration of the audit functionality is
provided by the TOE then this is specified in FMT_SMF.1,
and confining this functionality to Security Administrators is
required by FMT_MOF.1/Functions.
T.SECURITY_FUNCTIONAL
ITY_COMPROMISE
• Protection of secret/private keys against compromise is
specified in FPT_SKP_EXT.1
• Secure destruction of keys is specified in FCS_CKM.4
• If (optionally) management of keys is provided by the TOE
then this is specified in FMT_SMF.1, and confining this
functionality to Security Administrators is required by
FMT_MTD.1/CryptoKeys
• (Protection of passwords is separately covered under
T.PASSWORD_CRACKING)
T.PASSWORD_CRACKING • Requirements for password lengths and available
characters are set in FIA_PMG_EXT.1
• Protection of password entry by providing only obscured
feedback is specified in FIA_UAU.7
• Actions on reaching a threshold number of consecutive
password failures are specified in FIA_AFL.1
• Requirements for secure storage of passwords are set in
FPT_APW_EXT.1.
T.SECURITY_FUNCTIONAL
ITY_FAILURE
• Requirements for running self-test(s) are defined in
FPT_TST_EXT.1
P.ACCESS_BANNER • An advisory notice and consent warning message is
required to be displayed by FTA_TAB.1
Broadcom Security Target
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