FireEye HX Series Appliances Validation Report, Version 1.0
February 1, 2016
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National Information Assurance Partnership
Common Criteria Evaluation and Validation Scheme
Validation Report
FireEye, Inc.
1440 McCarthy Blvd
Milpitas, CA 95035
FireEye Series Appliances
Report Number: CCEVS-VR-VID10675-2015
Dated: February 1 2016
Version: 1.0
National Institute of Standards and Technology National Security Agency
Information Technology Laboratory Information Assurance Directorate
100 Bureau Drive 9800 Savage Road STE 6940
Gaithersburg, MD 20899 Fort George G. Meade, MD 20755-6940
®
TM
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ACKNOWLEDGEMENTS
Validation Team
Paul Bicknell
Patrick Mallett
Brad O’Neill
Common Criteria Testing Laboratory
Anthony Busciglio
Dereck Oshin
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1. Contents
2. EXECUTIVE SUMMARY ................................................................................................4
3. IDENTIFICATION..........................................................................................................5
4. ARCHITECTURAL INFORMATION..................................................................................6
5. ASSUMPTIONS AND CLARIFICATION OF SCOPE ..........................................................11
6. DOCUMENTATION.....................................................................................................12
7. EVALUATED CONFIGURATION ...................................................................................13
8. IT PRODUCT TESTING ................................................................................................14
9. RESULTS OF THE EVALUATION...................................................................................15
10. VALIDATOR COMMENTS & RECOMENDATIONS......................................................18
11. ANNEXES ...............................................................................................................19
12. SECURITY TARGET..................................................................................................20
13. GLOSSARY .............................................................................................................21
14. BIBLIOGRAPHY.......................................................................................................22
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1. EXECUTIVE SUMMARY
This report documents the NIAP validators' assessment of the evaluation of FireEye’s FireEye
HX Series Appliances. It presents the evaluation results, their justifications, and the
conformance results. This validation report is not an endorsement of the IT product by any
agency of the U.S. Government and no warranty of the IT product is either expressed or
implied.
The evaluation was performed by Acumen Security and completed in February 2016. The
information in this report is largely derived from the Evaluation Technical Report (ETR) and
associated test report, all written by Acumen Security. The evaluation determined that the
product is both Common Criteria Part 2 Extended and Part 3 Conformant.
The Target of Evaluation (TOE) is the FireEye HX Series Appliances.
The TOE identified in this Validation Report has been evaluated at a NIAP approved
Common Criteria Testing Laboratory using the Common Methodology for IT Security
Evaluation (Version 3.1, Rev. 4) for conformance to the Common Criteria for IT Security
Evaluation (Version 3.1, Rev. 4), as interpreted by the Assurance Activities contained in the
Protection Profile for Network Devices (NDPP) with Errata #3. This Validation Report
applies only to the specific version of the TOE as evaluated. The evaluation has been
conducted in accordance with the provisions of the NIAP Common Criteria Evaluation and
Validation Scheme and the conclusions of the testing laboratory in the evaluation technical
report is consistent with the evidence provided.
The technical information included in this report was obtained from the FireEye TBD Series
Appliances Security Target and analysis performed by the Validation Team.
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2. IDENTIFICATION
The CCEVS is a joint National Security Agency (NSA) and National Institute of
Standards effort to establish commercial facilities to perform trusted product evaluations.
Under this program, security evaluations are conducted by commercial testing
laboratories called Common Criteria Testing Laboratories (CCTLs). CCTLs evaluate
products against Protection Profile containing Assurance Activities, which are
interpretation of CEM work units specific to the technology described by the PP.
The NIAP Validation Body assigns Validators to monitor the CCTLs to ensure quality
and consistency across evaluations. Developers of information technology products
desiring a security evaluation contract with a CCTL and pay a fee for their product's
evaluation. Upon successful completion of the evaluation, the product is added to NIAP's
Product Compliance List.
Table 1 provides information needed to completely identify the product, including:
• The Target of Evaluation (TOE): the fully qualified identifier of the product as
evaluated.
• The Security Target (ST), describing the security features, claims, and assurances
of the product.
• The conformance result of the evaluation.
• The Protection Profile(s) to which the product is conformant.
• The organizations and individuals participating in the evaluation.
Table 1: Evaluation Identifiers
Item Identifier
Evaluation Scheme United States NIAP Common Criteria Evaluation and Validation Scheme
TOE FireEye HX Series Appliances
Protection Profile U.S. Government Protection Profile for Security Requirements for Network Devices, Version 1.1
with Errata #3
Security Target FireEye HX Series Appliances Security Target, version 1.0
Evaluation Technical
Report
VID 10675 Common Criteria NDPP Assurance Activity Report, Version 1.0
CC Version Version 3.1, Revision 4
Conformance Result CC Part 2 Extended and CC Part 3 Conformant
Sponsor FireEye, Inc.
Developer FireEye, Inc.
Common Criteria
Testing Lab (CCTL)
Acumen Security
Montgomery Village, MD
CCEVS Validators Paul Bicknell, Patrick Mallett, Brad O’Neill
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3. ARCHITECTURAL INFORMATION
Note: The following architectural description is based on the description presented in the
Security Target.
3.1.TOE EVALUATED CONFIGURATION
The TOE consists of the FireEye HX series appliances. These products include the HX4400,
HX4400D, HX 4402, and HX 9402. These products provide organizations with the ability to
continuously monitor endpoints for advanced malware and indicators of compromise.
FireEye HX Series Appliances (HX 4400, HX 4400D, HX 4402, HX 9402)
The FireEye HX series appliances enable security operations teams to correlate network and
endpoint activity. Organizations can automatically investigate alerts generated by FireEye
Threat Prevention Platforms, log management, and network security products, apply
intelligence from FireEye to continuously validate Indicators of Compromises on the
endpoints and identify if a compromise has occurred and assess the potential risk. Further,
organizations can quickly triage the incident to understand the details and contain
compromised endpoints with a single click and contain compromised devices within a single
click workflow.
TOE Evaluated Configuration
The TOE evaluated configuration consists of one of the HX series appliances listed above.
The TOE also supports (sometimes optionally) secure connectivity with several other IT
environment devices.
The following figure provides a visual depiction of an example TOE deployment. The TOE
boundary is surrounded with a hashed red line. Each TOE interconnection is through an SSH
secured channel
TOE Example Deployment
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3.2.PHYSICAL SCOPE OF THE TOE
The TOE is a hardware and software solution that makes up the appliances as described above
in Section Error! Reference source not found.. The TOE guidance documentation is
considered to be part of the TOE.
3.3.LOGICAL SCOPE OF THE TOE
The TOE is comprised of several security features. Each of the security features identified
above consists of several security functionalities, as identified below.
1. Security Audit
2. Cryptography Support
3. User Data Protection
4. Identification & Authentication
5. Security Management
6. Protection of the TSF
7. Trusted Path/Channel
8. TOE Access
3.3.1. Security Audit
The FireEye HX Series Appliances provide extensive auditing capabilities. The TOE
generates a comprehensive set of audit logs that identify specific TOE operations. For each
event, the TOE records the date and time of each event, the type of event, the subject identity,
and the outcome of the event. Auditable events include: failure on invoking cryptographic
functionality such as establishment, termination and failure of a TLS session; establishment,
termination and failure of an SSH session; modifications to the group of users that are part of
the authorized administrator roles; all use of the user identification mechanism; any use of the
authentication mechanism; any change in the configuration of the TOE, changes to time,
initiation of TOE update, indication of completion of TSF self-test, maximum sessions being
exceeded, termination of a remote session; and initiation and termination of a trusted channel.
The TOE is configured to transmit its audit messages to an external syslog server.
Communication with the syslog server is protected using TLS and the TOE can determine
when communication with the syslog server fails.
The logs for all of the appliances can be viewed on the TOE via the TOE CLI. The records
include the date/time the event occurred, the event/type of event, the user ID associated with
the event, and additional information of the event and its success and/or failure. The TOE
does not have an interface to modify audit records, though there is an interface available for
the authorized administrator to clear audit data stored locally on the TOE.
3.3.2. Cryptographic Support
The TOE provides cryptographic support for the following features,
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 TLS connectivity with the following entities:
o External LDAP Server
o Audit Server
o Management Web Browser
 SSH connectivity with the following entities:
o Management SSH Client
 Secure software update
3.3.3. User Data Protection
The TOE ensures that all information flows from the TOE do not contain residual information
from previous traffic. Packets are padded with zeros. Residual data is never transmitted from
the TOE.
3.3.4. Identification & Authentication
The TOE performs three types of authentication: device-level authentication of remote IT
Environment devices (e.g., audit servers and LDAP servers) and user authentication for the
Authorized Administrator of the TOE (both locally and remotely). Device-level
authentication of remote IT Environment devices allows the TOE to establish a secure channel
with an IT Environment trusted peer. The secure channel is established only after each device
authenticates the other. This device-level authentication is performed via TLS authentication.
The TOE provides authentication services for administrative users to connect to the TOEs
secure GUI or CLI administrator interface. The TOE requires Authorized Administrators to
authenticate prior to being granted access to any of the management functionality. In the
Common Criteria evaluated configuration, the TOE is configured to require a minimum
password length of 15 characters, as well as, mandatory password complexity rules. The TOE
provides two administrator authentication methods:
 Authentication against a local user database
 Authentication via LDAP over TLS (part of the TOE IT environment)
Password-based authentication can be performed on any TOE administrative interface
including local CLI, remote CLI over SSH, and remote GUI over HTTPS.
3.3.5. Security Management
The TOE provides secure administrative services for management of general TOE
configuration and the security functionality provided by the TOE. Management can take
place over a variety of interfaces including:
 Local console command line administration at each of the appliances
 Remote command line administration via SSHv2 at each of the appliances
 Remote GUI administration via TLS
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While the TOE provides multiple interfaces to perform administration, all functionality
available via the command line interface is limited. All general and security administration for
all of the appliances will take place at one of several locations including,
 Remote GUI administration to the appliance being managed over HTTPS,
 Remote CLI administration to each appliance over an SSH tunnel over HTTPS,
 Local administration via direction connection.
The TOE provides the ability to securely manage:
 All TOE administrative users;
 All identification and authentication;
 All audit functionality of the TOE;
 All TOE cryptographic functionality;
 The timestamps maintained by the TOE; and
 Update to the TOE.
The TOE supports several administrator roles, including,
 Admin: The system administrator is a “super user” who has all capabilities.
 Monitor: The system monitor has read-only access
 Operator: The system operator has a subset of the capabilities associated with the
admin role.
 Analyst: The system analyst focuses on data plane analysis.
 Auditor: The system auditor reviews audit logs and performs forensic analysis.
These roles are collectively known as the “Authorized Administrator”
The TOE supports the configuration of login banners to be displayed at time of login and
inactivity timeouts to terminate administrative sessions after a set period of inactivity.
3.3.6. Protection of the TSF
The TOE protects against interference and tampering by untrusted subjects by implementing
identification, authentication, and access controls to limit configuration to Authorized
Administrators. The TOE prevents reading of cryptographic keys and passwords.
Additionally the TOE software is a custom-built hardened version of Linux and access to
memory space is restricted to only required software services.
The TOE internally maintains the date and time. This date and time is used as the timestamp
that is applied to audit records generated by the TOE. Administrators can update the TOE’s
clock manually, or can configure the TOE to use NTP to synchronize the TOE’s clock with an
external time source. Finally, the TOE performs testing to verify correct operation of the
security appliances themselves.
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The TOE verifies all software updates via digital signature and requires administrative
intervention prior to the software updates being installed on the TOE to avoid the installation
of unauthorized software.
3.3.7. TOE Access
The TOE can terminate inactive sessions after an Authorized Administrator configurable time-
period. Once a session has been terminated the TOE requires the user to re-authenticate to
establish a new session.
The TOE also displays an Authorized Administrator configured banner on both the GUI and
CLI management interfaces prior to allowing any administrative access to the TOE.
3.3.8. Trusted Path/Channel
The TOE supports several types of secure communications, including,
 Trusted paths with remote administrators over SSH,
 Trusted paths with remote administrators over TLS,
 Trusted channels with remote IT Environment audit servers over TLS,
 Trusted channels with remote IT Environment LDAP servers over TLS.
Each of these trusted paths/channels are secured using either TLS or SSH.
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4. ASSUMPTIONS AND CLARIFICATION OF SCOPE
4.1.ASSUMPTIONS
The Security Problem Definition, including the assumptions, may be found in the Protection
Profile for Network Devices, version 1.1, 8 June 2012 (NDPP). That information has not been
reproduced here and the NDPP should be consulted if there is interest in that material.
4.2.CLARIFICATION OF SCOPE
All evaluations (and all products) have limitations, as well as potential misconceptions that
need clarifying. This text covers some of the more important limitations and clarifications of
this evaluation. Note that:
 As with any evaluation, this evaluation only shows that the evaluated configuration
meets the security claims made, with a certain level of assurance. The level of
assurance for this evaluation is defined within the Protection Profile for Network
Devices.
 Consistent with the expectations of the Protection Profile, this evaluation did not
specifically search for, nor seriously attempt to counter, vulnerabilities that were not
“obvious” or vulnerabilities to objectives not claimed in the ST. The CEM defines an
“obvious” vulnerability as one that is easily exploited with a minimum of
understanding of the TOE, technical sophistication and resources.
 The evaluation of security functionality of the product was limited to the functionality
specified in the claimed PPs. Any additional security related functional capabilities
included in the product were not covered by this evaluation.
 This evaluation did not specifically search for, nor attempt to exploit, vulnerabilities
that were not “obvious” or vulnerabilities to objectives not claimed in the ST. The
CEM defines an “obvious” vulnerability as one that is easily exploited with a
minimum of understanding of the TOE, technical sophistication and resources.
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5. DOCUMENTATION
The following documents were available with the TOE for evaluation:
1. [AAR] FireEye HX Series Appliances Assurance Activity Report, version 1.0
2. [AGD] FireEye HX Series Appliances FIPS Mode and Common Criteria Addendum,
version 1.0
3. [EAR] FireEye HX Series Appliances Entropy Assessment Report, version 1.0
4. [EQUIV] FireEye HX Series Appliances Equivalency Analysis, version 1.0
5. [ST] FireEye HX Series Appliances Security Target, version 1.0
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6. EVALUATED CONFIGURATION
See section 3.1.
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7. IT PRODUCT TESTING
This section describes the testing efforts of the developer and the evaluation team. It is derived
from information contained in Evaluation Test Report for the FireEye HX Series Appliances,
which is not publically available.
7.1.Testing Overview
A test plan was developed in accordance with the Testing Assurance Activities specified in
the NDPPv1.1 with Errata 3. Testing was conducted at two locations, including,
 FireEye, Inc. facilities in Reston, VA,
The Evaluation Team successfully performed the following activities during independent
testing:
 Placed TOE into evaluated configuration by executing the preparative procedures
 Successfully executed the NDPP Assurance-defined tests
 Successfully executed the selection-based Assurance-defined tests associated with the
following SFRs,
o FCS_SSH_EXT.1,
o FCS_TLS_EXT.1,
It was determined after examining the Test Report and full set of test results provided by the
evaluators the testing requirements for NDPPv1.1 with Errata #3 are fulfilled.
7.2.EVALUATION TEAM INDEPENDENT TESTING
The evaluation team verified the product according to the documents listed in Section 5 and
ran the tests specified in the NDPP.
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8. RESULTS OF THE EVALUATION
The results of the assurance requirements are generally described in this section and are
presented in detail in the proprietary documents: the Detailed Test Report (DTR) and the
Evaluation Technical Report (ETR). The reader of this document can assume that activities
and work units received a passing verdict.
A verdict for an assurance component is determined by the resulting verdicts assigned to the
corresponding evaluator action elements. The evaluation was conducted based upon CC
version 3.1 rev 4 and CEM version 3.1 rev 4. The evaluation determined the FireEye HX
Series Appliances to be Part 2 extended, and meets the SARs contained in the PP.
Additionally the evaluator performed the Assurance Activities specified in the NDPP.
8.1.EVALUATION OF THE SECURITY TARGET (ASE)
The evaluation team applied each ASE CEM work unit. The ST evaluation ensured the ST
contains a description of the environment in terms of policies and assumptions, a statement of
security requirements claimed to be met by the FireEye HX Series Appliances that are
consistent with the Common Criteria, and product security function descriptions that support
the requirements. Additionally the evaluator performed an assessment of the Assurance
Activities specified in the NDPP.
The validator reviewed the work of the evaluation team, and found that sufficient evidence
and justification was provided by the evaluation team to confirm that the evaluation was
conducted in accordance with the requirements of the CEM, and that the conclusion reached
by the evaluation team was justified.
8.2.EVALUATION OF THE DEVELOPMENT (ADV)
The evaluation team applied each EAL 1 ADV CEM work unit. The evaluation team assessed
the design documentation and found it adequate to aid in understanding how the TSF provides
the security functions. The design documentation consists of a functional specification
contained in the Security Target's TOE Summary Specification. Additionally the evaluator
performed the Assurance Activities specified in the NDPP related to the examination of the
information contained in the TOE Summary Specification.
The validator reviewed the work of the evaluation team, and found that sufficient evidence
and justification was provided by the evaluation team to confirm that the evaluation was
conducted in accordance with the Assurance Activities, and that the conclusion reached by the
evaluation team was justified.
8.3.EVALUATION OF THE GUIDANCE DOCUMENTS (AGD)
The evaluation team applied each EAL 1 AGD CEM work unit. The evaluation team ensured
the adequacy of the user guidance in describing how to use the operational TOE. Additionally,
the evaluation team ensured the adequacy of the administrator guidance in describing how to
securely administer the TOE. The guides were assessed during the design and testing phases
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of the evaluation to ensure they were complete. Additionally the evaluator performed the
Assurance Activities specified in the NDPP related to the examination of the information
contained in the operational guidance documents.
The validator reviewed the work of the evaluation team, and found that sufficient evidence
and justification was provided by the evaluation team to confirm that the evaluation was
conducted in accordance with the Assurance Activities, and that the conclusion reached by
the evaluation team was justified.
8.4.EVALUATION OF THE LIFE CYCLE SUPPORT ACTIVITIES (ALC)
The evaluation team applied each EAL 1 ALC CEM work unit. The evaluation team found
that the TOE was identified.
The validator reviewed the work of the evaluation team, and found that sufficient evidence
and justification was provided by the evaluation team to confirm that the evaluation was
conducted in accordance with the requirements of the CEM, and that the conclusion reached
by the evaluation team was justified.
8.5.EVALUATION OF THE TEST DOCUMENTATION AND THE TEST ACTIVITY
(ATE)
The evaluation team applied each EAL 1 ATE CEM work unit. The evaluation team ran the
set of tests specified by the Assurance Activities in the NDPP and recorded the results in a
Test Report, summarized in the Evaluation Technical Report and Assurance Activities Report.
The validator reviewed the work of the evaluation team, and found that sufficient evidence
was provided by the evaluation team to show that the evaluation activities addressed the test
activities in the NDPP, and that the conclusion reached by the evaluation team was justified.
8.6.VULNERABILITY ASSESSMENT ACTIVITY (VAN)
The evaluation team applied each EAL 1 AVA CEM work unit. The evaluation team
performed a public search for vulnerabilities, performed vulnerability testing and did not
discover any issues with the TOE.
The validator reviewed the work of the evaluation team, and found that sufficient evidence
and justification was provided by the evaluation team to confirm that the evaluation addressed
the vulnerability analysis Assurance Activities in the NDPP, and that the conclusion reached
by the evaluation team was justified.
8.7.SUMMARY OF EVALUATION RESULTS
The evaluation team's assessment of the evaluation evidence demonstrates that the claims in
the ST are met. Additionally, the evaluation team's test activities also demonstrated the
accuracy of the claims in the ST.
The validation team's assessment of the evidence provided by the evaluation team is that it
demonstrates that the evaluation team performed the Assurance Activities in the NDPP, and
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correctly verified that the product meets the claims in the ST.
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9. VALIDATOR COMMENTS & RECOMENDATIONS
The validators have no further comments about the evaluation results.
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10. ANNEXES
Not applicable
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11. SECURITY TARGET
The Security Target for this product’s evaluation is FireEye HX Series Appliances Security
Target Version 1.0, November 20, 2015.
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12. GLOSSARY
The following definitions are used throughout this document:
 Common Criteria Testing Laboratory (CCTL). An IT security evaluation facility
accredited by the National Voluntary Laboratory Accreditation Program (NVLAP) and
approved by the CCEVS Validation Body to conduct Common Criteria-based
evaluations.
 Conformance. The ability to demonstrate in an unambiguous way that a given
implementation is correct with respect to the formal model.
 Evaluation. The assessment of an IT product against the Common Criteria using the
Common Criteria Evaluation Methodology to determine whether or not the claims made
are justified; or the assessment of a protection profile against the Common Criteria using
the Common Evaluation Methodology to determine if the Profile is complete, consistent,
technically sound and hence suitable for use as a statement of requirements for one or
more TOEs that may be evaluated.
 Evaluation Evidence. Any tangible resource (information) required from the sponsor or
developer by the evaluator to perform one or more evaluation activities.
 Feature. Part of a product that is either included with the product or can be ordered
separately.
 Target of Evaluation (TOE). A group of IT products configured as an IT system, or an
IT product, and associated documentation that is the subject of a security evaluation
under the CC.
 Validation. The process carried out by the CCEVS Validation Body leading to the issue
of a Common Criteria certificate.
 Validation Body. A governmental organization responsible for carrying out validation
and for overseeing the day-to-day operation of the NIAP Common Criteria Evaluation
and Validation Scheme.
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13. BIBLIOGRAPHY
The Validation Team used the following documents to produce this Validation Report:
1. Common Criteria for Information Technology Security Evaluation - Part 1: Introduction
and general model, Version 3.1 Revision 4.
2. Common Criteria for Information Technology Security Evaluation - Part 2: Security
functional requirements, Version 3.1 Revision 4.
3. Common Criteria for Information Technology Security Evaluation - Part 3: Security
assurance requirements, Version 3.1 Revision 4.
4. Common Evaluation Methodology for Information Technology Security Evaluation,
Version 3.1 Revision 4.