National Information Assurance Partnership Common Criteria Evaluation and Validation Scheme Validation Report Samsung Electronics Co., Ltd. 416 Maetan-3dong, Yeongtong-gu, Suwon-si, Gyeonggi- do, 443-742 Korea Samsung Electronics Co., Ltd. Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S & Galaxy Tab Active VPN Client Report Number: CCEVS-VR-VID10595-2014 Dated: November 17, 2014 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 Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 ii ACKNOWLEDGEMENTS Validation Team Luke Florer Meredith Hennan Jerry Myers Ken Stutterheim Aerospace Corporation Sheldon Durrant MITRE Corporation Common Criteria Testing Laboratory James Arnold Tammy Compton Gossamer Security Solutions, Inc. Catonsville, MD Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 iii Table of Contents 1 Executive Summary.................................................................................................... 1 2 Identification............................................................................................................... 2 3 Architectural Information ........................................................................................... 3 3.1 TOE Evaluated Configuration ............................................................................ 3 3.2 Physical Boundaries............................................................................................ 4 4 Security Policy............................................................................................................ 4 4.1 Cryptographic support ........................................................................................ 4 4.2 User data protection............................................................................................ 5 4.3 Identification and authentication......................................................................... 5 4.4 Security management.......................................................................................... 5 4.5 Protection of the TSF.......................................................................................... 5 4.6 Trusted path/channels ......................................................................................... 5 5 Assumptions and Clarification of Scope..................................................................... 5 6 Documentation............................................................................................................ 6 7 IT Product Testing ...................................................................................................... 6 7.1 Developer Testing............................................................................................... 8 7.2 Evaluation Team Independent Testing ............................................................... 8 8 Evaluated Configuration............................................................................................. 8 9 Results of the Evaluation ............................................................................................ 8 9.1 Evaluation of the Security Target (ASE)............................................................ 9 9.2 Evaluation of the Development (ADV).............................................................. 9 9.3 Evaluation of the Guidance Documents (AGD)................................................. 9 9.4 Evaluation of the Life Cycle Support Activities (ALC)..................................... 9 9.5 Evaluation of the Test Documentation and the Test Activity (ATE) ............... 10 9.6 Vulnerability Assessment Activity (VAN)....................................................... 10 9.7 Summary of Evaluation Results........................................................................ 10 10 Validator Comments/Recommendations .................................................................. 10 11 Annexes..................................................................................................................... 10 12 Security Target.......................................................................................................... 11 13 Glossary .................................................................................................................... 11 14 Bibliography ............................................................................................................. 11 Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 1 1 Executive Summary This report documents the assessment of the National Information Assurance Partnership (NIAP) validation team of the evaluation of Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S & Galaxy Tab Active VPN Client solution provided by Samsung Electronics Co., Ltd. It presents the evaluation results, their justifications, and the conformance results. This Validation Report is not an endorsement of the Target of Evaluation by any agency of the U.S. government, and no warranty is either expressed or implied. The evaluation was performed by the Gossamer Security Solutions (Gossamer) Common Criteria Testing Laboratory (CCTL) in Catonsville, MD, United States of America, and was completed in October 2014. The information in this report is largely derived from the Evaluation Technical Report (ETR) and associated test reports, all written by Gossamer Security Solutions. The evaluation determined that the product is both Common Criteria Part 2 Extended and Part 3 Conformant, and meets the assurance requirements of EAL 1. The Target of Evaluation (TOE) are the Samsung Galaxy Devices VPN Client including the Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S 8.4 LTE & 10.5 LTE, & Galaxy Tab Active. The Target of Evaluation (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). 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 are consistent with the evidence provided. The validation team monitored the activities of the evaluation team, provided guidance on technical issues and evaluation processes, and reviewed the individual work units and successive versions of the ETR. The validation team found that the evaluation showed that the product satisfies all of the functional requirements and assurance requirements stated in the Security Target (ST). Therefore the validation team concludes that the testing laboratory’s findings are accurate, the conclusions justified, and the conformance results are correct. The conclusions of the testing laboratory in the evaluation technical report are consistent with the evidence produced. The Gossamer Security Solutions evaluation team concluded that the Common Criteria requirements for Evaluation Assurance Level (EAL) 1. The technical information included in this report was obtained from the Samsung Electronics Co., Ltd. Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S & Galaxy Tab Active VPN Client (IVPNCPP14) Security Target and analysis performed by the Validation Team. Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 2 2 Identification The CCEVS is a joint National Security Agency (NSA) and National Institute of Standards and Technology (NIST) 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) using the Common Evaluation Methodology (CEM) in accordance with National Voluntary Laboratory Assessment Program (NVLAP) accreditation. 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 Validated Products 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 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: Samsung Electronics Co., Ltd. Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha & Galaxy Tab S 8.4 LTE & 10.5 LTE VPN Client Protection Profile Protection Profile for IPsec Virtual Private Network (VPN) Clients, Version 1.4, 21 October 2013 ST: Samsung Electronics Co., Ltd. Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S & Galaxy Tab Active VPN Client (IVPNCPP14) Security Target, Version 1.4, November 11, 2014 Evaluation Technical Report Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S & Galaxy Tab Active VPN Client (IVPNCPP14) , Version 1.3, November 16, 2014 CC Version Common Criteria for Information Technology Security Evaluation, Version 3.1, rev 4 Conformance Result CC Part 2 extended, CC Part 3 conformant Sponsor Samsung Electronics Co., Ltd. Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 3 Item Identifier Developer Samsung Electronics Co., Ltd. Common Criteria Testing Lab (CCTL) Gossamer Security Solutions, Inc. CCEVS Validators Luke Florer, The Aerospace Corporation Meredith Hennan, The Aerospace Corporation Jerry Myers, The Aerospace Corporation Ken Stutterheim, The Aerospace Corporation Sheldon Durrant, The MITRE Corporation 3 Architectural Information Note: The following architectural description is based on the description presented in the Security Target. The TOE combines with a Mobile Device Management solution that enables the enterprise to watch, control and administer all deployed mobile devices, across multiple mobile service providers as well as facilitate secure communications through a VPN. This partnership provides a secure mobile environment that can be managed and controlled by the environment and reduce the risks that can be introduced through a Bring-Your-Own- Device (BYOD) model. Data on the TOE is protected through the implementation of Samsung On-Device Encryption (ODE) which utilizes CAVP certified cryptographic algorithms to encrypt device and SD card storage. This functionality is combined with a number of on-device policies including local wipe, remote wipe, password complexity, automatic lock and privileged access to security configurations to prevent unauthorized access to the device and stored data. The Samsung Enterprise Software Development Kit (SDK) builds on top of the existing Android security model by expanding the current set of security configuration of options to more than 390 configurable policies and including additional security functionality such as application whitelisting and blacklisting. 3.1 TOE Evaluated Configuration The evaluated configuration consists of several devices with specific processors. The model numbers of the mobile devices are as follows. Device Name Base Model Number Android Version Kernel Version Build Number Galaxy Note 4 (Qualcomm) SM-N910 4.4.4 3.10.0 KYU84Q Galaxy Note 4 (System LSI) 3.10.9 Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 4 Device Name Base Model Number Android Version Kernel Version Build Number Galaxy Note Edge (Qualcomm) SM-N915 4.4.4 3.10.0 KYU84Q Galaxy Note Edge (System LSI) 3.10.9 Galaxy Alpha (Qualcomm) SM-G850 4.4.4 3.4.0 KYU84Q Galaxy Alpha (System LSI) 3.10.9 Galaxy Tab S 8.4 SM-T707 4.4.2 3.4.0 KOT49H Galaxy Tab S 10.5 SM-T807 4.4.2 3.4.0 KOT49H Galaxy Tab Active SM-T360 4.4.4 3.4.0 KTU84P The security software version is MDF v1.1 Release 4. 3.2 Physical Boundaries The TOE is a multi-user operating system based on Android (4.4) that incorporates the Samsung Enterprise SDK. The TOE does not include the user applications that run on top of the operating system, but does include controls that limit application behavior. The method of use for the TOE is as a mobile messaging and VPN device for use within an enterprise environment where the configuration of the device is managed through a compliant device management solution. The TOE communicates and interacts with 802.11-2012 Access Points to establish network connectivity, and the through that connectivity interacts with MDM servers that allow administrative control of the TOE. 4 Security Policy This section summarizes the security functionality of the TOE: 1. Cryptographic support 2. User data protection 3. Identification and authentication 4. Security Management 5. Protection of the TSF 6. Trusted path/channels 4.1 Cryptographic support The IPsec implementation is the primary function of the TOE. IPSec is used by the TOE to protect communication between itself and a VPN Gateway over an unprotected network. With the exception of the IPsec implementation, the TOE relies upon its underlying evaluated platform for the cryptographic services specified in this Security Target. Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 5 4.2 User data protection The TOE ensures that residual information is protected from potential reuse in accessible objects such as network packets. 4.3 Identification and authentication The TOE provides the ability to use, store, and protect X.509 certificates and pre-shared keys that are used for IPsec Virtual Private Network (VPN) connections. 4.4 Security management The TOE provides all the interfaces necessary to manage the security functions required by the VPN client to meet the requirements. In particular, the IPsec VPN is fully configurable by a combination of functions provided directly by The TOE and those available to the associated VPN gateway. 4.5 Protection of the TSF The TOE relies upon its underlying platform to perform self-tests that cover the TOE as well as the functions necessary to securely update the TOE. 4.6 Trusted path/channels The TOE acts as a VPN client using IPsec to established secure channels to corresponding VPN gateways. 5 Assumptions and Clarification of Scope The Security Problem Definition, including the assumptions, may be found in the Protection Profile for IPsec Virtual Private Network (VPN) Clients, Version 1.4, 21 October 2013 (IVPNCPP14). That information has not been reproduced here and the IVPNCPP14should be consulted if there is interest in that material. 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: 1. As with any evaluation, this evaluation only shows that the evaluated configuration meets the security claims made, with a certain level of assurance (the assurance activities specified in the Protection Profile for IPsec Virtual Private Network (VPN) Clients and performed by the evaluation team). 2. This evaluation covers only the specific product version identified in this document, and not any earlier or later versions released or in process. 3. 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 Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 6 an “obvious” vulnerability as one that is easily exploited with a minimum of understanding of the TOE, technical sophistication and resources. 6 Documentation The following documentation was used as evidence for the evaluation of the Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S & Galaxy Tab Active VPN Client: • Samsung VPN Client on Galaxy Devices Guidance documentation, Version 1.1, October 28, 2014 • Samsung VPN Client on Galaxy Devices VPN User Guidance Documentation, Version 1.1, October 28, 2014 Any additional customer documentation delivered with the product or available through download was not included in the scope of the evaluation and hence should not be relied upon when using the products as evaluated. 7 IT Product Testing This section describes the testing efforts of the developer and the Evaluation Team. It is derived from information contained in the Detailed Test Report for Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha & Galaxy Tab S 8.4 LTE & 10.5 LTE VPN Client (IVPNCPP14), Version 1.2, October 31, 2014, which is not publically available. The Assurance Activities Report for Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S 8.4 LTE & 10.5 LTE, & Galaxy Tab Active VPN Client (IVPNCPP14), Version 1.2, November 11, 2014 (AAR), provides a non-proprietary overview of testing and the prescribed assurance activities. The following diagrams depict the test environments used by the evaluators. Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 7 Figure 1 Evaluator Test Setup 1 Windows Ubuntu Linux Ubuntu Linux Tab 10.5 LTE Galaxy Note 4 USB Connections Network – Putty Connections Ubuntu Linux Ubuntu Linux Ubuntu Linux Galaxy Note 4 Edge Tab 8.4 LTE Galaxy Alpha Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 8 7.1 Developer Testing No evidence of developer testing is required in the assurance activities for this product. 7.2 Evaluation Team Independent Testing The evaluation team verified the product according the Samsung VPN Client on Galaxy Devices Guidance documentation, Version 1.1, October 28, 2014 document and ran the tests specified in the IVPNCPP14. 8 Evaluated Configuration The evaluated configuration consists of the Samsung Galaxy Devices VPN Client devices configured as specified in Samsung VPN Client on Galaxy Devices Guidance documentation, Version 1.1, October 28, 2014. 9 Results of the Evaluation The results of the assurance requirements are generally described in this section and are presented in detail in the proprietary ETR and Detailed Test Report (DTR). The evaluation activities included performance of all EAL1 work units with 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 Product Figure 2 Evaluator Test Setup 2 TOE Devices Linux • RADIUS • VPN Gateway • Sniffer • Web server Backtrack Wireshark Access Point Private VPN-accessible Network Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 9 Name TOE to be Part 2 extended, and to meet the Part 3 Evaluation Assurance Level (EAL 1). 9.1 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 Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S & Galaxy Tab Active VPN Client devices that are consistent with the Common Criteria, and product security function descriptions that support the requirements. 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. 9.2 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 and Guidance documents. Additionally the evaluator performed the assurance activities specified in the IVPNCPP related to the examination of the information contained in the TSS. 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. 9.3 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. All of the guides were assessed during the design and testing phases of the evaluation to ensure they were complete. 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. 9.4 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 Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 10 conducted in accordance with the requirements of the CEM, and that the conclusion reached by the evaluation team was justified. 9.5 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 IVPNCPP and recorded the results in a Test Report, summarized in the AAR. 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. 9.6 Vulnerability Assessment Activity (VAN) The evaluation team applied each EAL 1 AVA CEM work unit. The evaluation team performed a public search for vulnerabilities and did not discover any public 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 was conducted in accordance with the requirements of the CEM, and that the conclusion reached by the evaluation team was justified. 9.7 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 testing 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 followed the procedures defined in the CEM, and correctly verified that the product meets the claims in the ST. 10 Validator Comments/Recommendations One of the ST’s claims deviates from the requirement FCS_IPSEC_EXT.1.14 defined in the VPN Protection Profile. This deviation was approved by the NIAP Technical Rapid Response Team (TRRT), and makes the assurance that the relative key strength negotiated by the product to protect the key strength of the tunnel reliant on the correct functioning and correct configuration of the remote VPN Gateway, which is beyond the scope of this evaluation. 11 Annexes Not applicable Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 11 12 Security Target The Security Target is identified as Samsung Electronics Co., Ltd. Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S & Galaxy Tab Active VPN Client (IVPNCPP14) Security Target, Version 1.4, November 11, 2014. 13 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. 14 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, September 2012. Samsung Galaxy Devices VPN Client Validation Report, Version 0.3 November 17, 2014 12 [2] Common Criteria for Information Technology Security Evaluation Part 2: Security functional components, Version 3.1, Revision 4, September 2012. [3] Common Criteria for Information Technology Security Evaluation Part 3: Security assurance components, Version 3.1 Revision 4, September 2102. [4] Protection Profile for IPsec Virtual Private Network (VPN) Clients, Version 1.4, 21 October 2013. [5] Assurance Activities Report for Samsung Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S 8.4 LTE & 10.5 LTE, & Galaxy Tab Active VPN Client (IVPNCPP14), Version 1.2, November 11, 2014. [6] Samsung VPN Client on Galaxy Devices Guidance documentation, Version 1.1, October 28, 2014. [7] Samsung VPN Client on Galaxy Devices VPN User Guidance Documentation, Version 1.1, October 28, 2014.