UNCLASSIFIED © Government of Canada. This document is the property of the Government of Canada. It shall not be altered, distributed beyond its intended audience, produced, reproduced or published, in whole or in any substantial part thereof, without the express permission of CSE. COMMON CRITERIA CERTIFICATION REPORT Lexmark CX920, CX921, CX922, CX923, CX924, XC9235, XC9245, XC9255, and XC9265 Multi-Function Printers 7 February 2018 383-4-434 V1.0 UNCLASSIFIED FOREWORD This certification report is an UNCLASSIFIED publication, issued under the authority of the Chief, Communications Security Establishment (CSE). Suggestions for amendments should be forwarded through departmental communications security channels to your Client Services Representative at CSE. The Information Technology (IT) product identified in this certification report, and its associated certificate, has been evaluated at an approved evaluation facility – established under the Canadian Common Criteria Scheme – 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. 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 the Communications Security Establishment, 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 Communications Security Establishment, 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: ITS Client Services Telephone: (613) 991-7654 E-mail: itsclientservices@cse-cst.gc.ca UNCLASSIFIED 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 Communications Security Establishment. 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 17025:2005, 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 to the Certified Products list (CPL) for the Canadian CC Scheme and to the Common Criteria portal (the official website of the International Common Criteria Project). UNCLASSIFIED TABLE OF CONTENTS Executive Summary........................................................................................................................................1 1 Identification of Target of Evaluation......................................................................................................2 1.1 Common Criteria Conformance..................................................................................................................2 1.2 TOE description ..........................................................................................................................................2 1.3 TOE architecture.........................................................................................................................................3 2 Security policy .......................................................................................................................................4 2.1 Cryptographic functionality........................................................................................................................4 3 Assumptions and Clarifications of Scope.................................................................................................5 3.1 Usage and Environmental assumptions .....................................................................................................5 3.2 Clarification of Scope..................................................................................................................................5 4 Evaluated Configuration.........................................................................................................................6 4.1 Documentation...........................................................................................................................................6 5 Evaluation Analysis Activities .................................................................................................................7 5.1 Development..............................................................................................................................................7 5.2 Guidance Documents .................................................................................................................................7 5.3 Life-cycle Support.......................................................................................................................................7 6 Testing Activities....................................................................................................................................8 6.1 Assessment of Developer Tests..................................................................................................................8 6.2 Conduct of Testing......................................................................................................................................8 6.3 Independent Functional Testing.................................................................................................................8 6.4 Independent Penetration Testing ..............................................................................................................9 7 Results of the Evaluation......................................................................................................................10 7.1 Recommendations/Comments................................................................................................................ 10 8 Supporting Content..............................................................................................................................11 8.1 List of Abbreviations................................................................................................................................ 11 8.2 References............................................................................................................................................... 13 UNCLASSIFIED LIST OF FIGURES Figure 1 TOE Architecture ....................................................................................................................................3 LIST OF TABLES Table 1 TOE Identification.......................................................................................................................................2 Table 2 Cryptographic Algorithm(s) ........................................................................................................................4 UNCLASSIFIED V1.0 1 EXECUTIVE SUMMARY Lexmark CX920, CX921, CX922, CX923, CX924, XC9235, XC9245, XC9255, and XC9265 Multi-Function Printers (hereafter referred to as the Target of Evaluation, or TOE), from Lexmark International, 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 TOE meets the requirements of the conformance claim listed in Table 1 for the evaluated security functionality. EWA-Canada is the CCEF that conducted the evaluation. This evaluation was completed 7 February 2018 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 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. Communications Security Establishment, as the Certification Body, declares that the TOE evaluation meets all the conditions of the Arrangement on the Recognition of Common Criteria Certificates and that the product will be listed on the Canadian Certified Products list (CPL) and the Common Criteria portal (the official website of the International Common Criteria Project). UNCLASSIFIED V1.0 2 1 IDENTIFICATION OF TARGET OF EVALUATION The Target of Evaluation (TOE) is identified as follows: Table 1 TOE Identification TOE Name and Version Lexmark CX920, CX921, CX922, CX923, CX924, XC9235, XC9245, XC9255, and XC9265 Multi-Function Printers Developer Lexmark International, Inc. Conformance Claim Protection Profile for Hardcopy Devices [HCD], version 1.0, dated September 10, 2015 as modified by Errata #1 dated June 2017 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. 1.2 TOE DESCRIPTION The TOE is a multi-functional printer system with scanning, fax, and networked capabilities. Their capabilities extend to walk-up scanning and copying, scanning to fax, scanning to email, and servicing print jobs through the network. The MFPs feature an integrated touch-sensitive operator panel. UNCLASSIFIED V1.0 3 1.3 TOE ARCHITECTURE A diagram of the TOE architecture is as follows: Figure 1 TOE Architecture Printer Laptop Laptop Desktop LAN LDAP, Email, Syslog and/or NTP Servers UNCLASSIFIED V1.0 4 2 SECURITY POLICY The TOE implements policies pertaining to the following security functional classes: • Identification and Authentication; • User Data Protection; • Cryptographic Support; • Trusted Path/Channels; • Security Management; • Security Audit; • Protection of the TSF; and • TOE Access. Complete details of the security functional requirements (SFRs) can be found in the Security Target (ST) referenced in section 8.2. 2.1 CRYPTOGRAPHIC FUNCTIONALITY The following Government of Canada approved cryptographic algorithms were evaluated by the CAVP and used by the TOE: Table 2 Cryptographic Algorithm(s) Cryptographic Algorithm Standard Certificate Number Advanced Encryption Standard (AES) FIPS 197 4851, 4997 Rivest Shamir Adleman (RSA) FIPS 186-4 2695 Secure Hash Algorithm (SHS) FIPS 180-4 3990,4063 Keyed-Hash Message Authentication Code (HMAC) FIPS 198 3248,3320 Deterministic Random Bit Generation (DRBG) SP 800-90A 1820 Elliptic Curve Digital Signature Algorithm (ECDSA) FIPS 186-4 1268 Component Validation List (CVL) SP 800-131A 1547,1550 UNCLASSIFIED V1.0 5 3 ASSUMPTIONS AND CLARIFICATIONS 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 is assumed to be located in a physical environment that is controlled or monitored such that a physical attack is prevented or detected; • The TOE is not intended to withstand network-based attacks from an unmanaged network environment; • TOE Administrators are trusted to administer the TOE according to site security policies; and • Authorized Users are trained to use the TOE according to site security policies. 3.2 CLARIFICATION OF SCOPE The TOE incorporates CAVP-validated Cryptography and was not subjected to CMVP (FIPS-140) validation. UNCLASSIFIED V1.0 6 4 EVALUATED CONFIGURATION The evaluated configuration for the TOE comprises: One of the following Lexmark MFD Models: • CX920; • CX921; • CX922; • CX923; • CX924; • XC9235; • XC9245; • XC9255; and • XC9265. All containing firmware version CXTMH.040.204c3 with Lexmark Secure Element (P/N 57X0085). 4.1 DOCUMENTATION The following documents are provided to the consumer to assist in the configuration and installation of the TOE: a. Lexmark Common Criteria Installation Supplement and Administrator Guide, February 2018; b. Lexmark Embedded Web Server Administrator's Guide June 2017; c. Lexmark CX920, CX921, CX922, CX923, CX924, CX927 Series User's Guide, August 2017; d. Lexmark XC9225, XC9235, XC9245, XC9255, XC9265 User’s Guide, August 2017; and e. Lexmark Menus Guide, August 2017. UNCLASSIFIED V1.0 7 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 (SFRs). 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. UNCLASSIFIED V1.0 8 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 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. PP Assurance Activities: The evaluator performed the assurance activities listed in the claimed PP. 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. UNCLASSIFIED V1.0 9 6.4 INDEPENDENT PENETRATION TESTING Subsequent to the independent review of public domain vulnerability databases and all evaluation deliverables, limited independent evaluator penetration testing was conducted. The penetration tests focused on: a. Use of automated vulnerability scanning tools to discover potential network, platform and application layer vulnerabilities such as Heartbleed, Shellshock, FREAK, POODLE, and GHOST; b. User Data Persistence after Restart of Printer: The objective of this test case is to verify that settings are what they should be upon restarting; and c. Faxing a Postscript file: The objective of this test case is to verify that a PS file faxed to the printer will not execute. 6.4.1 PENETRATION TEST RESULTS The independent penetration testing did not uncover any exploitable vulnerabilities in the intended operating environment. UNCLASSIFIED V1.0 10 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 IT product identified in this report has been evaluated at an approved evaluation facility established under the Canadian Common Criteria Scheme using the Common Methodology for IT Security Evaluation, Version 3.1 Revision 5, for conformance to the Common Criteria for IT Security Evaluation, Version 3.1 Revision 5. These evaluation results apply only to the specific version and release of the product in its evaluated configuration and in conjunction with the complete certification report. 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 CSE or by any other organization that recognizes or gives effect to this certificate, and no warranty of the IT product by CSE 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. UNCLASSIFIED V1.0 11 8 SUPPORTING CONTENT 8.1 LIST OF ABBREVIATIONS Term Definition AES Advanced Encryption Standard CAVP Cryptographic Algorithm Validation Program CCEF Common Criteria Evaluation Facility CM Configuration Management CMVP Cryptographic Module Validation Program CPL Certified Products List CSE Communications Security Establishment CVL Component Validation List DRBG Deterministic Random Bit Generation EAL Evaluation Assurance Level ECDSA Elliptic Curve Digital Signature Algorithm ETR Evaluation Technical Report GC Government of Canada HMAC Keyed-Hash Message Authentication Code IT Information Technology ITS Information Technology Security LAN Local Area Network PP Protection Profile RSA Rivest Shamir Adleman SFR Security Functional Requirement SHS Secure Hash Algorithm ST Security Target UNCLASSIFIED V1.0 12 Term Definition TOE Target of Evaluation TSF TOE Security Function UNCLASSIFIED V1.0 13 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. Lexmark CX920, CX921, CX922, CX923, CX924, XC9235, XC9245, XC9255, and XC9265 Multi-Function Printers Security Target, version 1.6, January 30, 2018 Evaluation Technical Report for Lexmark CX920, CX921, CX922, CX923, CX924, XC9235, XC9245, XC9255, and XC9265 Multi-Function Printers, version 1.1, February 7, 2018 Assurance Activity Report for Lexmark CX920, CX921, CX922, CX923, CX924, XC9235, XC9245, XC9255, and XC9265 Multi-Function Printers against the Protection Profile for Hardcopy Devices, version 1.1, February 7, 2018