UNCLASSIFIED
507 LSS 2019
COMMON CRITERIA CERTIFICATION REPORT
Citrix Virtual Apps and Desktops 7 1912
LTSR Premium Edition
26 October 2020
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FOREWORD
This certification report is an UNCLASSIFIED publication, issued under the authority of the Chief, Communications Security
Establishment (CSE).
The Information Technology (IT) product identified in this certification report has been evaluated at an approved evaluation
facility established under the Canadian Centre for Cyber Security (CCCS). This certification report, and its associated
certificate, applies only to the identified version and release of the product in its evaluated configuration. The evaluation has
been conducted in accordance with the provisions of the Canadian CC Scheme, and the conclusions of the evaluation facility
in the evaluation report are consistent with the evidence adduced. This report, and its associated certificate, are not an
endorsement of the IT product by Canadian Centre for Cyber Security, or any other organization that recognizes or gives
effect to this report, and its associated certificate, and no warranty for the IT product by the Canadian Centre for Cyber
Security, or any other organization that recognizes or gives effect to this report, and its associated certificate, is either
expressed or implied.
If your department has identified a requirement for this certification report based on business needs and would like more
detailed information, please contact:
Contact Centre and Information Services
contact@cyber.gc.ca | 1-833-CYBER-88 (1-833-292-3788)
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OVERVIEW
The Canadian Common Criteria Scheme provides a third-party evaluation service for determining the trustworthiness of
Information Technology (IT) security products. Evaluations are performed by a commercial Common Criteria Evaluation
Facility (CCEF) under the oversight of the Certification Body, which is managed by the Canadian Centre for Cyber Security.
A CCEF is a commercial facility that has been approved by the Certification Body to perform Common Criteria evaluations; a
significant requirement for such approval is accreditation to the requirements of ISO/IEC 17025, the General Requirements
for the Competence of Testing and Calibration Laboratories.
By awarding a Common Criteria certificate, the Certification Body asserts that the product complies with the security
requirements specified in the associated security target. A security target is a requirements specification document that
defines the scope of the evaluation activities. The consumer of certified IT products should review the security target, in
addition to this certification report, in order to gain an understanding of any assumptions made during the evaluation, the IT
product's intended environment, the evaluated security functionality, and the testing and analysis conducted by the CCEF.
The certification report, certificate of product evaluation and security target are posted on the Common Criteria portal (the
official website of the International Common Criteria Project).
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TABLE OF CONTENTS
EXECUTIVE SUMMARY .................................................................................................................................... 6
1 Identification of Target of Evaluation ........................................................................................................... 7
1.1 Common Criteria Conformance.......................................................................................................................... 7
1.2 TOE Description................................................................................................................................................. 7
1.3 TOE Architecture ............................................................................................................................................... 7
2 Security Policy......................................................................................................................................... 8
3 Assumptions and Clarification of Scope ....................................................................................................... 9
3.1 Usage and Environmental Assumptions.............................................................................................................. 9
3.2 Clarification of Scope ........................................................................................................................................ 9
4 Evaluated Configuration............................................................................................................................11
4.1 Documentation.................................................................................................................................................11
5 Evaluation Analysis Activities....................................................................................................................12
5.1 Development....................................................................................................................................................12
5.2 Guidance Documents........................................................................................................................................12
5.3 Life-Cycle Support ............................................................................................................................................12
6 Testing Activities ....................................................................................................................................13
6.1 Assessment of Developer tests.........................................................................................................................13
6.2 Conduct of Testing...........................................................................................................................................13
6.3 Independent Functional Testing ........................................................................................................................13
6.3.1 Functional Test Results.................................................................................................................................14
6.4 Independent Penetration Testing.......................................................................................................................14
6.4.1 Penetration Test results................................................................................................................................14
7 Results of the Evaluation ..........................................................................................................................16
7.1 Recommendations/Comments..........................................................................................................................16
8 Supporting Content..................................................................................................................................17
8.1 List of Abbreviations.........................................................................................................................................17
8.2 References.......................................................................................................................................................17
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LIST OF FIGURES
TOE Architecture..................................................................................................................................................7
LIST OF TABLES
Table 1: TOE Identification ................................................................................................................................................7
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EXECUTIVE SUMMARY
The Citrix Virtual Apps and Desktops 7 1912 LTSR Premium Edition (hereafter referred to as the Target of Evaluation, or
TOE), from Citrix Systems, Inc. , was the subject of this Common Criteria evaluation. A description of the TOE can be found
in Section 1.2. The results of this evaluation demonstrate that the TOE meets the requirements of the conformance claim
listed in Section 1.1 for the evaluated security functionality.
Lightship Security is the CCEF that conducted the evaluation. This evaluation was completed on 26 October 2020 and was
carried out in accordance with the rules of the Canadian Common Criteria Scheme.
The scope of the evaluation is defined by the Security Target, which identifies assumptions made during the evaluation, the
intended environment for the TOE, and the security functional/assurance requirements. Consumers are advised to verify
that their operating environment is consistent with that specified in the security target, and to give due consideration to the
comments, observations, and recommendations in this Certification Report.
The Canadian Centre for Cyber Security, as the Certification Body, declares that this evaluation meets all the conditions of
the Arrangement on the Recognition of Common Criteria Certificates and that the product is listed on the Certified Products
list (CPL) for the Canadian CC Scheme and the Common Criteria portal (the official website of the International Common
Criteria Project).
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1 IDENTIFICATION OF TARGET OF EVALUATION
The Target of Evaluation (TOE) is identified as follows:
Table 1: TOE Identification
TOE Name and Version Citrix Virtual Apps and Desktops 7 1912 LTSR Premium Edition
Developer Citrix Systems, Inc.
1.1 COMMON CRITERIA CONFORMANCE
The evaluation was conducted using the Common Methodology for Information Technology Security Evaluation, Version 3.1
Revision 5, for conformance to the Common Criteria for Information Technology Security Evaluation, Version 3.1 Revision 5.
The TOE claims the following conformance:
EAL 2 + ALC_FLR.2
1.2 TOE DESCRIPTION
The TOE is a desktop and application virtualization software solution that gives organizations control of virtual machines,
applications, licensing, and security, while providing anywhere access for any device.
1.3 TOE ARCHITECTURE
A diagram of the TOE architecture is as follows:
TOE Architecture
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2 SECURITY POLICY
The TOE implements and enforces policies pertaining to the following security functionality:
 User Data Protection
 Identification and Authentication
 Security Management
 Protection of the TSF
Complete details of the security functional requirements (SFRs) can be found in the Security Target (ST) referenced in
section 8.2.
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3 ASSUMPTIONS AND CLARIFICATION OF SCOPE
Consumers of the TOE should consider assumptions about usage and environmental settings as requirements for the
product’s installation and its operating environment. This will ensure the proper and secure operation of the TOE.
3.1 USAGE AND ENVIRONMENTAL ASSUMPTIONS
The following assumptions are made regarding the use and deployment of the TOE:
 The TOE servers are installed in a physically secure location that can only be accessed by authorised
administrators.
 The Endpoint operating system is securely configured, including appropriate file protection. In particular, a non-
administrative user should not have access to facilities to edit the User Device registry.
 Data (including keys) generated, processed, and stored outside the TOE is managed in accordance with the level of
risk. This includes the application of appropriate controls to prevent the use of cameras and smart phones to
photograph screens and disabling screen capture and print screen functions on endpoints if required by the TOE
customer.
 The VM Host software provides virtual machine isolation and is operating correctly and securely.
 Trusted third-party software is operating correctly and securely.
3.2 CLARIFICATION OF SCOPE
Communication between TOE components is protected by Windows cryptographic modules in the operational environment.
The following features/components have not been evaluated and are not to be used in the evaluated configuration:
 Citrix Gateway,
 Citrix Provisioning Services,
 Citrix Profile Management,
 Citrix SD-WAN,
 Citrix Desktop Director,
 Citrix Endpoint Management,
 Application delivery methods other than Citrix Endpoint Management published apps, also known as server-based
hosted applications,
 Desktop delivery methods other than VDI desktops,
 Desktop delivery groups of the random type,
 The capability for users to belong to multiple desktop delivery groups,
 The capability for desktop users to be assigned multiple desktops in a desktop delivery group,
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 The capability for users to belong to multiple application delivery groups,
 Delegated administrator roles other than full administrators,
 Control of local peripheral support using individual and group policy (only global policy is used),
 The ability for administrators to automatically create virtual desktops and servers using Machine Creation Services,
 Power management of virtual machines via the Delivery Controller,
 The use of multiple Delivery Controllers,
 Connection leasing and use of Zones with Local Host Cache,
 Disconnected sessions,
 Non-brokered sessions,
 Streaming applications using AppV,
 The ability for administrators to deploy Personal vDisks for users and deliver applications using AppV and AppDisks,
 The ability for users to access their personal office PC remotely from Citrix Receiver using the Remote PC Access
feature,
 The recording, archiving and playback of the on-screen activity of a user session hosted on a Server or Desktop VDA
using the Session Recording feature, and
 Use of the Federated Authentication Service to support SAML-based logon to StoreFront, and the use of
unauthenticated (anonymous) delivery groups and StoreFront stores.
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4 EVALUATED CONFIGURATION
The evaluated configuration of the TOE comprises the following Citrix Virtual Apps and Desktops 7 1912 LTSR Premium
Edition server, build 1912.0.0.24265, and software components running on Windows Server 2019 Standard Edition:
 Delivery Controller build 1912.0.0.24265.
 Studio build 1912.0.0.24265.
 StoreFront (includes the StoreFront Management Console) build 1912.0.0.40.
 Virtual Delivery Agent build 1912.0.0.24265.
 Citrix Workspace app build 19.11.0.50 for Windows.
The TOE requires the following components in the operational environment:
 Citrix License Licensing 11.16.3.
 Microsoft SQL Server 2017.
 Microsoft Active Directory Server in Windows Server 2016 native mode.
 A compatible hypervisor.
4.1 DOCUMENTATION
The following documents are provided to the consumer to assist in the configuration and installation of the TOE:
a) Common Criteria Evaluated Configuration Guide for Citrix Virtual Apps and Desktops 7 1912 LTSR Premium Edition
[CCECG], v01, 2020-10-08
https://www.citrix.com/about/legal/security-compliance/common-criteria.html.
b) Citrix Virtual Apps and Desktops 7 1912 LTSR Premium Edition, Citrix Product Documentation, 5 June 2020
https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/1912-ltsr/citrix-virtual-apps-anddesktops-7-1912-ltsr.pdf.
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5 EVALUATION ANALYSIS ACTIVITIES
The evaluation analysis activities involved a structured evaluation of the TOE. Documentation and process dealing with
Development, Guidance Documents, and Life-Cycle Support were evaluated.
5.1 DEVELOPMENT
The evaluators analyzed the documentation provided by the vendor; they determined that the design completely and
accurately describes the TOE security functionality (TSF) interfaces and how the TSF implements the security functional
requirements. The evaluators determined that the initialization process is secure, that the security functions are protected
against tamper and bypass, and that security domains are maintained.
5.2 GUIDANCE DOCUMENTS
The evaluators examined the TOE preparative user guidance and operational user guidance and determined that it
sufficiently and unambiguously describes how to securely transform the TOE into its evaluated configuration and how to use
and administer the product. The evaluators examined and tested the preparative and operational guidance, and determined
that they are complete and sufficiently detailed to result in a secure configuration.
Section 4.1 provides details on the guidance documents.
5.3 LIFE-CYCLE SUPPORT
An analysis of the TOE configuration management system and associated documentation was performed. The evaluators
found that the TOE configuration items were clearly marked.
The evaluators examined the delivery documentation and determined that it described all of the procedures required to
maintain the integrity of the TOE during distribution to the consumer.
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6 TESTING ACTIVITIES
Testing consists of the following three steps: assessing developer tests, performing independent functional tests, and
performing penetration tests.
6.1 ASSESSMENT OF DEVELOPER TESTS
The evaluators verified that the developer has met their testing responsibilities by examining their test evidence, and
reviewing their test results, as documented in the Evaluation Test Report (ETR). The correspondence between the tests
identified in the developer’s test documentation and the functional specification was complete.
6.2 CONDUCT OF TESTING
The TOE was subjected to a comprehensive suite of formally documented, independent functional and penetration tests. The
detailed testing activities, including configurations, procedures, test cases, expected results and observed results are
documented in a separate Test Results document.
6.3 INDEPENDENT FUNCTIONAL TESTING
During this evaluation, the evaluator developed independent functional tests by examining design and guidance
documentation.
All testing was planned and documented to a sufficient level of detail to allow repeatability of the testing procedures and
results. The following testing activities were performed:
a. Repeat of Developer's Tests: The evaluator repeated a subset of the developer's tests;
b. User Authentication: The evaluator verified the TOE supports Usernames/Passwords and smartcards for
authentication;
c. Smartcard Authentication Error Conditions: The evaluator verified that various error conditions for smartcard
authentication were generated;
d. Configuring StoreFront authentication methods: The evaluator verified that authentication methods for StoreFront
can be configured using the Citrix StoreFront administration console;
e. User desktop or apps access: The evaluator verified that a user cannot access a desktop or app when the datastore
is not available;
f. User access to delivery groups: The evaluator verified user access to delivery groups;
g. Interrupted network error: The evaluator verified that a network communication failed error message is displayed
when a network cable is unplugged from the user device;
h. Breaking out of Applications: The evaluator verified that users are prevented from “breaking out” of published
applications;
i. USB preferences: The evaluator verified that USB preferences are available;
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j. Administrator control of the USB virtual channel: The evaluator verified that the administrator can control the USB
virtual channel;
k. Administrator Control: The evaluator verified that Administrators can control the USB and CDM virtual channels.
6.3.1 FUNCTIONAL TEST RESULTS
The developer’s tests and the independent functional tests yielded the expected results, providing assurance that the TOE
behaves as specified in its ST and functional specification.
6.4 INDEPENDENT PENETRATION TESTING
The penetration testing effort focused on 4 flaw hypotheses.
 Public Vulnerability based (Type 1)
 Technical community sources (Type 2)
 Evaluation team generated (Type 3)
 Tool Generated (Type 4)
The evaluators conducted an independent review of all evaluation evidence, public domain vulnerability databases and
technical community sources (Type 1 & 2). Additionally, the evaluators used automated vulnerability scanning tools to
discover potential network, platform, and application layer vulnerabilities (Type 4). Based upon this review, the evaluators
formulated flaw hypotheses (Type 3), which they used in their penetration testing effort.
6.4.1 PENETRATION TEST RESULTS
Type 1 & 2 searches were conducted on 8/25/2020 and included the following search terms:
 Citrix Delivery controller and Citrix Studio (1912.0.0.24265)
 Citrix StoreFront (1912.0.0.40)
 Citrix VDA (1912.0.0.24265)
 Citrix License server
 Citrix Desktop Lock (19.12.0.119 Type)
 Citrix workspace 1911 (19.11.0.50)
Vulnerability searches were conducted using the following sources:
 Citrix Support Knowledge Center https://support.citrix.com/search/
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 NIST National Vulnerabilities Database (can be used to access CVE and US-CERT databases identified below):
https://web.nvd.nist.gov/view/vuln/search
o Common Vulnerabilities and Exposures: http://cve.mitre.org/cve/
https://www.cvedetails.com/vulnerability-search.php
o US-CERT: http://www.kb.cert.org/vuls/html/search.
 Community (Symantec) security community: https://www.securityfocus.com/
 Tenable Network Security http://nessus.org/plugins/index.php?view=search
 Tipping Point Zero Day Initiative http://www.zerodayinitiative.com/advisories
 Offensive Security Exploit Database: https://www.exploit-db.com/
 Rapid7 Vulnerability Database: https://www.rapid7.com/db/vulnerabilities
 OpenSSL Vulnerabilities: https://www.openssl.org/news/vulnerabilities.html
 Google
The independent penetration testing did not uncover any residual exploitable vulnerabilities in the intended operating
environment.
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7 RESULTS OF THE EVALUATION
This evaluation has provided the basis for the conformance claim documented in Table 1. The overall verdict for this
evaluation is PASS. These results are supported by evidence in the ETR.
The Information Technology (IT) product identified in this certification report has been evaluated at an approved evaluation
facility established under the Canadian Centre for Cyber Security (CCCS). This certification report, and its associated
certificate, apply only to the specific version and release of the product in its evaluated configuration.
The evaluation has been conducted in accordance with the provisions of the Canadian Common Criteria Scheme and the
conclusions of the evaluation facility in the evaluation report are consistent with the evidence adduced. This is not an
endorsement of the IT product by CCCS or by any other organization that recognizes or gives effect to this certificate, and no
warranty of the IT product by CCCS or by any other organization that recognizes or gives effect to this certificate, is
expressed or implied.
7.1 RECOMMENDATIONS/COMMENTS
 It is recommended that all guidance outlined in Section 4.1 be followed to configure the TOE in the evaluated
configuration.
 The evaluator noted that the setup of the TOE requires extensive knowledge of Microsoft Windows services and
functionality. It is recommended that customers looking to deploy the TOE have in depth experience with Active
Directory and Windows Server.
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8 SUPPORTING CONTENT
8.1 LIST OF ABBREVIATIONS
Term Definition
CAVP Cryptographic Algorithm Validation Program
CCEF Common Criteria Evaluation Facility
CM Configuration Management
CMVP Cryptographic Module Validation Program
CSE Communications Security Establishment
CCCS Canadian Centre for Cyber Security
EAL Evaluation Assurance Level
ETR Evaluation Technical Report
GC Government of Canada
IT Information Technology
ITS Information Technology Security
PP Protection Profile
SFR Security Functional Requirement
ST Security Target
TOE Target of Evaluation
TSF TOE Security Function
8.2 REFERENCES
Reference
Common Criteria for Information Technology Security Evaluation, Version 3.1 Revision 5, April 2017.
Common Methodology for Information Technology Security Evaluation, CEM, Version 3.1 Revision 5, April 2017.
Citrix Virtual Apps and Desktops 7 1912 LTSR Premium Edition, Security Target, Version 1.1, 26 October 2020.
Evaluation Technical Report, Version 0.9, 26 October 2020.