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Xerox WorkCentre™ Information Assurance Disclosure Paper

1. Figure 2 4 Controller Operating System layer components Ver 1 1 February 2011 Page 15 of 49 Xerox XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper 2 7 3 Network Protocols Figure 2 5 and Figure 2 6 are interface diagrams depicting the IPv4 and IPv6 protocol stacks supported by the device annotated according to the DARPA model mary j ONS J pr j Kerberce j mo z Y ad r r i YO ZIPIASRPAP l 1 vin i anmo wi tU La t oncr t o 1 Pe N le N N e N OR M N sunia A o NO J E vf 7 Y NETOS o NCP O SA OS SN rs 4 yf een Noa gt NS to PADRES 7 1 NA SIAN Vi Ter 5 ae E I Y LORA fe t Ny ig SDA Lyle 1 ao SE aaO ME kp sex ey y RTAW NEP ATP AEP Transport Layer id A ii oe _ M t IPSec Ra e La eee eee eae ake Pet PX em M e DOOPIAARP Internet Layer MT id i Waser SO OCC lll EE DE EE mo l ae d am am a gt gt db a Gs EER EE ana de Ba2 1X T EEE 8023 Figure 2 5 IPv4 Network Protocol Stack AFP NDS DHCP LE 3 pp j ONS Jj lpr J Kerberos J fp 4 EJ l NCP o Y yo ZIPIASPIPAP UN vine somp vd 1 ii N ad Ty N os 1 y z N N 7 AN A x ON Ob e N A w ON 7 Y y f ie SN bir a SAP gt N Y i ey j N N O i SS AL ike h e so ma Se tp SPX y ve RTWF NBP ATP AFP gt l 1 l 1 l 1 PX pa sa Me DOPIMARP Transport Lay
2. SNMPv2P RFCs 1 40x SNMPv2C RFCs 190x SNMPv3 RFCs 1902 2572 2574 SNMP over UDP IP SNMP over IPX Netware SNMP over NETBEUI Microsoft Networking optional Ver 1 1 February 2011 Page 44 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper RFC 1759 Printer MIB Group RFC 1213 System group RFC 1213 Interface group RFC 1514 Storage group RFC 1514 Device group General group 7 objects Covers group 3 objects Localization group 4 objects Responsible Party group 2 objects OPTIONAL System Resources group 4 objects Input group 12 objects Extended Input group 7 objects OPTIONAL Input Media group 4 objects OPTIONAL Output group 6 objects Extended Output group 7 objects OPTIONAL Output Dimensions group 5 objects OPTIONAL Output Features group 6 objects OPTIONAL Marker group 15 objects Marker Supplies group 9 objects OPTIONAL Marker Colorant group 5 objects OPTIONAL Media Path group 11 objects Channels group 8 objects Interpreter group 12 objects Console group 4 objects Console Display Buffer group 2 objects Console Display Light group 5 objects Xerox WorkCentre supported supported supported supported supported supported supported w caveats only US English language supported supported supported supported supported supported supported w caveats only 3
3. The Xerox Service Technician must be authenticated twice 1 The first password called the PSW Lock Facility is obtained by calling a Xerox service location and providing the CSE employee number and the serial number of the PSW The password is then given to the Xerox Service Technician and is valid for 90 days When the password expires the Xerox Service Technician must call in again This password is unique to the client application running on that particular PSW and is required to log onto the PSW prior to initiating communications with the machine 2 Once the application is running the PSW supplies the second password different from the first to authenticate the session to the device This embedded password is automatically passed from the application to the machine and is never seen by anyone It is hardcoded in the software of the Marking Engine and the PSW application and is common to all products It is not encrypted Many of the diagnostic routines will require this password in order to function 3 4 4 2 Communication Protocol The communication process uses a Xerox proprietary protocol Each packet passing back and forth will have a unique identifier session key with it for authentication and tracking purposes All protocols are API based very little information is directly transferred For example in order to run any given diagnostic test the Start Test XXX command is sent to the Marking Engine The Marking Engine r
4. IIO status 26 PagePack login Device name Device serial number Completion Status Success if Passcode is ok Failed if Passcode is not ok Locked out if Max Attempts Exceed 5 Time Remaining Hrs Remaining for next attempt Min Remaining for next attempt 27 Postscript Passwords Device name Device serial number Modes StartupMode enabled disabled System Params Password changed or failed Start Job Password changed or failed Completion Status Enabled disabled Changed if password changed correctly Failed if change attempt failed 29 Network User Login UsereName Device name Device serial number Completion Status Success Failed 30 SA login UsereName Device name Device serial number Completion Status Success or Failed 31 User Login UserName Device name Device serial number Completion Status Success or Failed 32 Service Login Service name Device name Device serial number Completion status Success or Failed 33 Audit log download UserName Device name Device Serial Number Completion status Success or Failed 34 TIO feature status UserName Device name Device serial number IIO Status enabled or disabled Ver 1 1 February 2011 Page 33 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Event Event description ID Entry Data 35 SA pin changed
5. e Click the appropriate link to disable a non compliant feature or protocol e Click the appropriate link to replace any non compliant certificates e Click the appropriate link to acknowledge that you allow the printer to use non compliant features and protocols 4 6 2 Enabling FIPS 140 Mode 1 In CentreWare IS click Properties gt Security gt Encryption gt FIPS 140 2 2 Click Enable 3 Click Run Configuration Check and Apply A pass or fail message appears If the configuration check passes click Reboot Machine to save and restart the printer If the configuration check fails the reasons for the failed test are listed in a table with links to disable the protocol replace the certificate or allow the printer to use the non compliant protocol Ver 1 1 February 2011 Page 39 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y NOTE When FIPS 140 Mode is enabled only FIPS compliant certificates can be installed on the printer 4 7 Email Signing and Encryption to Self The device is capable of signing and encrypting emails when the user is authenticated to the device using a CAC or PIV smart card containing appropriate signing and encryption certificates The device allows signing to multiple recipients using the SHA1 hash algorithm The device allows encryption to the authenticated user only supporting 3DES and AES encryption When enabled the configuration options allow
6. ICMP Echo ICMP Time ICMP Echo Reply and ICMP Destination Unreachable message des Reverse Address Resolution Protocol RARP 903 Bootstrap Protocol BOOTP 951 Clarifications and Extensions for the Bootstrap Protocol BOOTP 1542 X 500 Distinguished Name RFC references 1779 2253 2297 2293 SLP 2608 Dynamic Host Configuration Protocol DHCP 2131 DHCP Options and BOOTP Vendor Extensions 2132 X 509 Certificate RFC references 2247 2293 2459 2510 2511 3280 Hyper Text Transfer Protocol version 1 1 HTTP 2616 Line Printer Daemon LPR LPD 1179 File Transfer Protocol FTP 959 SNMPv1 1157 SNMPv2 1901 1905 1906 1908 1909 SNMPv3 1902 2572 2574 Structure of Management Information SMI for SNMPv1 1155 1212 Structure of Management Information SMI for SNMPv2 1902 1903 1904 IETF MIBs MIB II 1213 Host Resources 1514 RFC 1759 Printer Printer MIB V2 1759 SNMP Traps 1215 Ver 1 1 February 2011 Page 47 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Function RFC Standard Document Printing Application DPA 10175 Appletalk Inside Appletalk Second Edition Printing Description Languages Postscript Language Reference Third Edition PCL6 PCL5C PCL XL class 3 0 emulation TIFF 6 0 JPEG Portable Document Format Reference Manual Version 1 3 Ver 1 1 February 2011 Page 48 of 49 6 4
7. UserName Device name Device serial number Completion status 36 Audit log Transfer UserName Device name Device serial number Completion status 37 SSL UserName Device name Device serial number Completion Status Enabled Disabled Terminated 38 X509 certificate UserName Device name Device serial number Completion Status Created uploaded Downloaded 39 IP sec UserName Device name Device serial number Completion Status Configured enabled disabled Terminated 40 SNMPv3 UserName Device name Device serial number Completion Status Configured enabled disabled 41 IP Filtering Rules UserName Device name Device serial number Completion Status Configured enabled disabled 42 Network Authentication UserName Device name Device serial number Completion Status Enabled Disabled 43 Device clock UserName Device name Device serial number Completion Status time changed date changed 44 SW upgrade Device name Device serial number Completion Status Success Failed 45 Cloning Device name Device serial number Completion Status Success Failed 46 Scan Metadata Validation Device name Device serial number Completion Status Metadata Validation Success or Failed 47 Xerox Secure Access Device name Device serial number Completion status Configured enabled disabled 48 Service login copy mode Service name Devic
8. and PIN 3 2 2 User authentication Users may authenticate to the device using Kerberos LDAP SMB Domain or NDS authentication protocols Once the user is authenticated to the device the user may proceed to use the Network Scanning features listed above The WebUI allows an SA to set up a default authentication domain and as many as 8 additional alternate authentication domains The device will attempt to authenticate the user at each domain server in turn until authentication is successful or the list is exhausted 3 2 2 1 Kerberos Authentication Solaris or Windows 2000 Windows 2003 This is an option that must be enabled on the device and is used in conjunction with all Network Scanning features Scan to File Scan to E mail internet fax and Scan to Fax Server The authentication steps are 1 A User enters a user name and password at the device in the Local UI The device sends an authentication request to the Kerberos Server 2 The Kerberos Server responds with the encrypted credentials of the user attempting to sign on 3 The device attempts to decrypt the credentials using the entered password The user is authenticated if the credentials can be decrypted 4 The device then logs onto and queries the LDAP server trying to match an email address against the user s Login Name The user s email address will be retrieved if the personalization option has been selected on the Authentication Configuration page 5 If the L
9. incidental consequential loss of business profits or special damages even if Xerox Corporation has been advised of the possibility of such damages Ver 1 1 February 2011 Page 6 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 2 Device Description This product consists of an in put document handler and scanner marking engine including paper path controller and user interface Document Feeder amp Scanner IIT Graphical User Interface GUI Paper Trays Optional office finisher Figure 2 1 WorkCentre Multifunction System 2 1 Security relevant Subsystems 2 1 1 Physical Partitioning The security relevant subsystems of the product are partitioned as shown in Figure 2 2 Ver 1 1 February 2011 Page 7 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y Human Interface Original 4 Documents is Button eS 20 3 8 S Y Es Se oe o S amp Scanner we e og 9 Document Handler FO Pe E 5 i ternaj Wiring G 3 Propri ieta aY Ethernet Port Image Output USB Target Port USB TOE internal Terminal also N Hardcopy Host Ports Scanner lt a Physical external Interfaces 3 gt Controller GUI re ed known as Marking Paper output interface Finisher Interface Serial Port Prop Engine Foreign Device Interface e 4 we 5 ef a YY 5
10. 53404 for Microsoft WSD support 2 8 2 26 Port 61100 WS Web Service interface s used to get set proxy configuration specific to Extensible Interface Platform services 2 8 2 27 Port 61200 WS Web Service interface s used to get physical UI configuration information Ver 1 1 February 2011 Page 21 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y 2 8 2 28 Port 61400 WS Web Service interface s used to get set digital certificates 2 8 2 29 Port 61502 WS Web Service interface s used to get set services available on the device 2 8 2 30 Port 61503 WS Web Service interface s used to get session information applicable to the current active session on the device 2 8 3 1P Filtering The devices contain a static host based firewall that provides the ability to prevent unauthorized network access based on IP address and or port number Filtering rules can be set by the SA using the WebUI An authorized SA can create rules to Accept Reject Drop for ALL or a range of IP addresses In addition to specifying IP addresses to filter an authorized SA can enable disable all traffic over a specified transport layer port Ver 1 1 February 2011 Page 22 of 49 3 3 1 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y System Access Authentication Model The authentication model allows for both local and network authentication a
11. EGP group 20 objects Transmission group 0 objects SNMP group 28 objects System Object Resources Table objects per RFC 1907 8 optional not supported WorkCentre supported supported w caveats ifInUnknownProtos does not work supported but this group has been DEPRICATED by the IETF supported supported supported supported not applicable because Exterior Gateway Protocol not supported by machine not applicable because the group has not yet been defined by the IETF supported supported objects Ver 1 1 February 2011 Page 45 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper XeroX Additional Capabilities Application Support WorkCentre Pe ability to change GET SET TRAP PDU community names Printer MIB traps SNMP Generic Traps Vendor specific Traps set trap destination address es for any 3rd party Net Mgmt apps polling for IETF status objects using any 3rd party Net Mgmt apps walking IETF MIB tree structure using any 3rd party Net Mgmt app e g HP OpenView etc shareware program New type 2 enumerations from next generation Host optional not support because Host Resources MIBv2 has NOT entered Resources MIB supported the standards track New type 2 enumerations from next generation Printer MIB supported New Printer MIBv2 objects implemented optional not support because Printer MIBv2 has NOT entered the standards track
12. User Modifiable Function or Use Process to Y N Clear NVM 512KB via Diagnostics Control setpoints configuration Diagnostic settings Flash EEPROM 32MB via Diagnostics Firmware Diagnostic Flash MCU PWBA 16Mbit N Permanent storage of program User Not customer image data are not stored alterable EEPROM LED Driver PWBA K 128Kbit N Permanent storage of setup data Not customer alterable EEPROM MCU PWBA 128Kbit N Permanent storage of parameters Not customer and setup data User image data are alterable not stored EEPROM Trans PWBA 16Kbit N Permanent storage of parameters Not customer and setup data User image data are alterable not stored EEPROM UI PWBA 1kbit x 2 N Permanent storage of setup data Not customer Storage of UI error log data alterable EEPROM DADF PWBA 16Kbit N Permanent storage of DADF Not customer configuration code User image data alterable are not stored ROM UI PWBA 32kbyte N Permanent storage of UI executable Not customer code User image data are not stored alterable ROM DADF PWBA 512kbyte N Permanent storage of UI Not customer configuration code User image data alterable are not stored Additional Information All memory listed above contains code for execution and configuration information No user or job data is stored in these locations Table 2 Controller volatile and non volatile memory components Ver 1 1 February 2011 Page 10 of 49 XEROX WorkCentre 7525 7
13. XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Appendix E References Xerox De Kerberos FAQ http www nrl navy mil CCS people kenh kerberos fag html IP port numbers http www iana org assignments port numbers Ver 1 1 February 2011 Page 49 of 49
14. against Local accounts database Group membership determined at domain conser Device provides access to authorized sees Autentcaton and Authorization complete user continues with tas Figure 3 1 Authentication and Authorization schematic Ver 1 1 February 2011 Page 24 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y 3 2 Login and Authentication Methods There are a number of methods for different types of users to be authenticated In addition the connected versions of the product also log into remote servers A description of these behaviors follows 3 2 1 System Administrator Login All product configurations Users must authenticate themselves to the device To access the User Tools via the Local UI a numerical PIN is required The customer can set the PIN to anywhere from 3 to 31digits in length This PIN is stored in the controller NVM and is inaccessible to the user Xerox strongly recommends that this PIN be changed from its default value immediately upon product installation The PIN should be set to a minimum of 8 characters in length and changed at least once per month Longer PINs can be changed less frequently a 9 digit PIN would be good for a year The same PIN is used to access the Administration screens in the Web UI A Card reader is available for public sector customers so the user can authenticate to the device with a CAC PIV card
15. authentication request directly to the Domain Controller through the router using the IP address of the Domain Controller The Domain Controller responds back to the device through the router whether or not the user was successfully authenticated If 2 is successful steps 3 5 proceed as described in 4 6 of Kerberos section 2 Subnet 1 B R k A WorkCentre or LDAP Server Domain Controller WorkCentre Pro Device and Domain Controller are on different Subnets SA defines Hostname of Domain Controller Authentication Steps 1 The device sends the Domain Controller hostname to the DNS Server as iN Router med S Subnet 1 we e Subnet 2 AS 57 i gt WorkCentre or Domain Controller LDAP Server i WorkCentre Pro 7 i 1 a2 f y DNS Server 2 The DNS Server returns the IP Address of the Domain Controller The device sends an authentication request directly to the Domain Controller through the router using the IP address of the Domain Controller The Domain Controller responds back to the device through the router whether or not the user was successfully authenticated If 4 is successful steps 5 7 proceed as described in steps 4 6 of the Kerberos section Ver 1 1 February 2011 Page 26 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Pa
16. fax protocol All remaining fax specific features are implemented in software on the controller The fax telephone lines are connected directly to the Fax Card via RJ 11 connectors Name Size Purpose Explanation MODEM 1 NA MultiTech MT9234SMI Fax modem MODEM 2 NA Optional additional MT9234SMI Table 6 Fax Module components 2 4 Scanner 2 4 1 Purpose The purpose of the scanner is to provide mechanical transport to convert hardcopy originals to electronic data 2 4 2 Hardware The scanner converts the image from hardcopy to electronic data An optional document handler moves originals into a position to be scanned The scanner provides enough image processing for signal conditioning and formatting The scanner does not store scanned images All other image processing functions are in the copy controller 2 5 Graphical User Interface GUI 2 5 1 Purpose The GUI detects soft and hard button actuations and provides text and graphical prompts to the user The GUI is sometimes referred to as the Local UI LUI to distinguish it from the WebUI which is exported by the web service that runs in theccontroller Images are not transmitted to or stored in the GUI The Start hard button is located on the GUI panel 2 6 Marking Engine Image Output Terminal or IOT 2 6 1 Purpose The Marking Engine performs copy print paper feeding and transport image marking and fusing and document finishing Images are not
17. for that role Use of network credentials for system administrator login provides more security than the legacy model based on a sys admin PIN allowing for better tracking of sys admin logins by individual users Figure 3 1 provides a schematic view of the authentication and authorization subsystem Use of the local accounts database or the network can be set independently for both authentication and authorization meaning that it is possible to enable network authentication and local authorization or vice versa Usually the device will be set for both authentication and authorization to take place against the same database either local or network Ver 1 1 February 2011 Page 23 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y Local Ul Authentication and Authorization Subsystem Virtual keyboard Secure Access CAC 1 y eet User presses Access button User selects Properties page Enable SSL to ensure secure communication between client and device Get Credentials Authentication Local UI Kerberos NDS SMB LDAP Web UI LA al authenticated against Local Accounts database User authenticated by network domain conser Domain Controller Authentication Failure Authentication Failure Authorization toca authorization
18. i e can accept 1 or more sheets can be supported for the Top Tray C supported supported supported supported supported supported supported supported supported supported w caveats prtConsoleDisable is hardcoded to enabled 3 prtConsoleLocalization hardcoded to 1 supported w caveats limited local UI messaging captured within table C local UI button selection messages are not captured within table supported w caveats only the Power Saver LED is supported the other LEDs were not implemented because they represent local UI menu activations I Alert Table group 8 objects supported Alert Time group 7 object OPTIONAL supported System group 7 objects supported Storage group 8 objects supported Devices group 6 objects supported Processor Table 2 objects supported Network Interface Table 1 object supported Printer Table 2 objects supported Disk Storage Table 4 objects supported Partition Table 5 objects supported File System Table 9 objects supported Software Running group 7 objects OPTIONAL Software Running Performance group 2 objects OPTIONAL optional not supported optional not supported Software Installed group 7 objects OPTIONAL RFC 1213 MIB 11 for TCP IP group System group 7 objects Interfaces group 23 objects Address Translation group 3 objects IP group 42 objects ICMP group 26 objects TCP group 19 objects UDP group 6 objects
19. of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Scanning feature Device behavior Scan to E mail I Fax The device logs into an LDAP Server as set up by the SA in User Tools It will log into the Server when a user is authenticated and the device is configured for Remote Authorization or Personalization is enabled and when the user attempts to access LDAP based scan to email address books At the time the LDAP server must be accessed the device will log into bind to _ the LDAP server The device uses a simple bind to the LDAP server unless the device was able to obtain a TGS for the LDAP server from the Kerberos Servier In this case a SASL GSSAPI bind is performed A network username and password may be assigned to the device The device logs in as a normal user with read only privileges User credentials may be used if configured by the SA for this authentication step Scan to Fax Server The device logs in to the Fax Server as set up by the SA from the Properties tab on the WebUI The credentials may be the user s credentials or system credentials Please note that when the device logs into any server the device username and password are sent over the network in clear text unless SSL has been enabled or IPSec has been configured to encrypt the traffic 3 3 2 2 Scan Template Management This is a web service that allows the SA to manage templates stored in a r
20. on Flash Media Physical security of this information is the responsibility of the user or operator Optional security devices such as a CAC reader communicate with the machine via this port No job data is transmitted across this interface when an optional security device is connected Rear panel 1 Target port User PC direct connection for printing Xerox Customer Service Engineer PWS connection for problem diagnosis The optional CopyAssistant kit communicates with the machine via this port No job data is transmitted across this interface Additional Information A number of devices can be connected to the 3 USB Host ports Once information has been copied either as a back up data set or as a transfer medium physical security of this information is the responsibility of the user or operator Table 5 USB Ports 2 3 Fax Module 2 3 1 Purpose The embedded FAX service uses the installed embedded fax card to send and receive images over the telephone interface The FAX card plugs into a custom interface slot on the controller 2 3 2 Hardware The Fax Card is a printed wiring board assembly containing a fax modem and the necessary telephone interface logic It connects to the controller via a serial communications interface The Fax Card is responsible for Ver 1 1 February 2011 Page 13 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 9 o implementing the T 30
21. selected service have not been exceeded In this sense XSA acts as an authorization service The system administrator can limit access to device services by setting the usage limits on specific services to zero for users that 1 On color machines XSA can track color copy or color print usage Ver 1 1 February 2011 Page 36 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox should not have rights to use the feature After each job is performed the user s balance is updated by the number of impressions or scans performed Services become unavailable to the user when the usage limits are exceeded When XSA is enabled in the print driver or on the Web UI before a print job is submitted an XSA ID must also be entered The ID is sent to the controller for validation If the submitted ID is valid the job will print and the user s balance will be updated by the number of impressions performed If the submitted ID is invalid the job is deleted and an error sheet is printed in its place The Systems Administrator can chose to track all services Print Copy Scan and Fax or can choose to permit specific accounting IDs only for color print and copy On demand the SA will be able to download a report that shows activity for all of the users The SA can add modify or remove users and their allocations at any point An end user will be able to review their balances by entering a User ID at
22. stored at any point in these subsystems 2 6 2 Hardware The marking engine is comprised of paper supply trays and feeders paper transport laser scanner xerographics and paper output and finishing The marking engine contains a CPU BIOS RAM and Non Volatile Memory 2 7 System Software Structure 2 7 1 Open source components Open source components in the connectivity layer implement high level protocol services The security relevant connectivity layer components are Ver 1 1 February 2011 Page 14 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y e Apache 2 2 16 with mod ssl integrated http and https e PHP 5 3 1 e OpenSSL 0 9 8p SSL e SAMBA 3 0 37 SMB e Netsnmp 5 0 9 SNMPv3 2 7 2 OS Layer in the Controller The OS layer includes the operating system network and physical I O drivers The controller operating system is Wind River Linux kernel v 2 6 27 Xerox may issue security patches for the OS in which case the Xerox portion of the version number i e after the sign will be incremented The crypto library for IPSec is provided by the kernel IP Filtering is also provided by the kernel Open Source Developed by Xerox Network Controller Services Application Layer Security Manager Connectivity Layer OS Layer
23. the LUI or web UI 4 3 SMart eSolutions SMart eSolutions provides the ability to automatically send data to Xerox to be used for billing Meter Assistant and toner replenishment Supplies Assistant The Systems Administrator sets up the attributes for the service via the web UI including enable disable participation in SMart eSolutions and time of day for the daily polling to the Xerox Communication Server The device can be set to communicate via a proxy server on the customer s network The proxy server is set to auto detect proxy settings or to manually set proxy address using the WebUI 4 2 1 Meter Assistant Once the connection with the Xerox Communication Server has been established the Meter Assistant service will poll the Xerox Communication server daily over the network The server will check whether it is time in the billing cycle to update the meter readings If so the server will request reads from the device and the device will then respond by sending the meter reads back to the server 4 2 2 Supplies Assistant Once the connection with the Xerox Communication Server has been established the Supplies Assistant service will be automatically enabled by request from the Xerox Communication Server The device will then automatically send supplies data over the network to the Xerox Communication server at a regular interval 4 2 3 Summary The SMart eSolutions communication process means that the device initiates all communicati
24. 530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Hard Disk Descriptions Drive Partition Removable Size User Modifiable Function Process System Image Y N Y N to Clear System Disk System partition No 27GB N with normal Operating System Diagnostic operation Fonts configuration file Procedure storage System Disk Image partition No 53GB N with normal Job Images Diagnostic operation Procedure Additional Information This System disk contains the Linux Operating System and stores executables fonts and settings files During normal operation job files do not remain stored on this disk One exception is Print From Saved Jobs feature Customer jobs saved on the machine s hard disk using this feature must be manually deleted by the customer If Image Overwrite is installed and full disk overwrite is selected all saved jobs will be erased The Image partition stores images in a proprietary encoded format in non contiguous blocks Customer image data is only stored to the image partition if EPC memory is full User data and image data may be completely erased if Image Overwrite kit is installed and enabled Using a three pass algorithm which conforms to U S Department of Defense Directive 5200 28 M the entire image disk partition is erased and checked Table 3 Hard Disk Drive 2 2 3 External Connections The controller printed wiring boards are physical
25. A centralized database that maps host names to static IP addresses Dynamic Domain Name Server Maps host names to dynamic static IP addresses Dynamic Random Access Memory Electrically erasable programmable read only memory Exterior Gateway Protocol Gigabyte Hewlett Packard Hypertext transfer protocol International Business Machines Internet Control Message Protocol Internet Engineering Task Force Internet Fax Immediate Image Overwrite Image Input Terminal the scanner Information Technology Image Output Terminal the marking engine Internet Protocol Internet Protocol Security Internet Protocol Exchange Local Area Network Lightweight Directory Access Protocol Lightweight Directory Access Protocol Server Typically the same server that is used for email It contains information about users such as name phone number and email address It can also include a users login alias Light Emitting Diode Line Printer Request Media Access Control Management Information Base not applicable Novell Distributed Print Services NETBIOS Extended User Interface Network Basic Input Output System Network Operating System Non Volatile Random Access Memory Page 42 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y NVM Non Volatile Memory ODIO On Demand Image Overwrite PCL Printer Control Language PDL Page Description Language PIN Personal Identification Number PSW P
26. DAP Query is successful the user s email address is placed in the From field Otherwise the user s login name along with the system domain is used in the From field 6 The user may then add recipient addresses by accessing the Address Book on the LDAP server Please see the User Manual for details Each addition is a separate session to the LDAP server 3 2 2 2 SMB Authentication Windows NT 4 or Windows 2000 Windows 2003 This is also an option that may be enabled on the device and is used in conjunction with all Network Scanning features Scan to File Scan to E mail internet fax and Scan to Fax Server The authentication steps vary somewhat depending on the network configuration Listed below are 3 network configurations and the authentication steps Basic Network Configuration Device and Domain Controller are on the same Subnet Authentication Steps 1 The device broadcasts an authentication request that is answered by the Domain Controller 2 The Domain Controller responds back to the device whether or not the user was successfully authenticated If 2 is successful steps 3 5 proceed as described in steps 4 6 of the Kerberos section Ver 1 1 February 2011 Page 25 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Device and Domain Controller are on different Subnets SA defines IP Address of Domain Controller Authentication Steps 1 The device sends an
27. IETF AppleTalk MIB RFC implemented Job monitoring via MIBs Vendor specific MIBs implemented Vendor specific MIBs provided to customer Vendor specific client application s provided required Windows2000 MIB objects supported Embedded Web Server support Xerox PrinterMap application support Xerox PrintXchange support Novell Distributed Print Services support Dazel Output Management Environment HP OpenView snap in module CA Unicenter snap in module IBM Tivoli NetView snap in module Ver 1 1 February 2011 Page 46 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 6 3 Appendix C Standards Controller Hardware PCI Specification PCI Local Bus Specification Revision 2 1 100 Megabit Ethernet IEEE 802 3 Universal Serial Bus 1 1 Parallel IEEE 1284 IEEE 1394a FireWire Controller Software Function RFC Standard Internet Protocol 950 Internet standard subnetting procedure 919 Broadcasting internet datagrams 922 IP Version 6 2460 IP Version 6 Addressing Architecture 2373 ICMP Version 6 Protocol 2463 Transition Mechanisms for IPv6 Hosts and Routers 1933 Transmission Control Protocol TCP 793 User Datagram Protocol 768 Standard for the transmission of IP datagrams over Ethernet 894 networks Standard for the transmission of IP datagrams over IEEE802 1042 networks ICMP
28. S si Ee conan Ee NR ER eN ES ee RSG REEN ee bee Bed ee decian lan Ee Age ae ea Gede o TEENE E debi eed 14 2 1 2 OS Layer in the Controller uri a llas 15 221 3 NetWork Protocols AE AE EE HE OE NE EE AE OR EE AEK inde si n 16 2 8 LOGICAL Need EER ee Re ee ee oe 16 2 8 1 Network ProtocolS see Ie Ed Ee ER De be ER ee ee De ee ie RD oe n EVA see se Ed ee E es ee eie 16 28 2 POS ES ER OD RE Ee E EE GE OD De tantviraa 17 2 85 A A ee ee Ee Ie ee ee Ee Pe ee 22 3 SYSTEM ACCESS iese sees ee suk N knee ee ee AN Ke Mee n ee ee Ne Ne ee Wee ee N Ne ie ee aE 23 31 Authentication Model ccssssscsssssccssssssessssscsssssessesssssescesssesssssseesesessesesssessesssesssssssesessseasesessasessseeseseses 23 Ver 1 1 February 2011 Page 3 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper 3 2 Login and Authentication Methods sesse see sesse see see se se ee se EE AE Be GE ee GE ee Be GE AE Se GE ee Be Ge ee Be Ge ae Be Ge ee ees 2 3 2 1 System Administrator Login All product configuratiOMS oonocnnnnnincnonnnocnnononononencnan Re ee ee ee ee ee ee ee 25 3 2 2 User authentication O 25 3 3 System ACCOUNTS esse see see see see see se EE ee EE EE GE EE Ee Ee EE GE issia EE GE Ge EE EE EE AE AE GE Ge ee GE EE EE AE Ee Ee ee ee ee ee ee 27 3 3 1 Printing Multifunction models only iese sesse see ke ke ee Ge ee ee cono ee ee ee Re Re Re ee ee ee ee ee ee ee 27 3 3 2 Network Scanning Multifunction models o
29. VET et MB ie DAE RE EE EE NE OE OE anales 38 4 6 NN 39 4 0 1 FIPS 14022 Compliance RE EE EE EE o soi ondas 39 4 62 Enabling FIPS 140 Mode ii ese ee ane tia 39 4 7 Email Signing and Encryption to Self sesse ses see se se ee ee AE Be GE AE ee AE Be Ge AE Be Ge AE ee AE ee AE ee Ge ees 40 5 RESPONSES TO KNOWN VULNERABILITIES usus ee ee ee ees ee EER RR Re ee ee ee ee EE EER RR RR RR Re ee ee 41 5 1 Security Xerox www xerox com securitY use ese ese see see ee ee ee Ge ee Ge Ge Ge ee Ge Ge ee Ge Ge Ge ee Ge ee 41 6 APRENDICES sis tae 42 6 1 Appendix A Abbrevidtions ssccsssssesssssssscssssssssessesessssssssssssssssssesssssscessesssseesessssecsessssessesesseesesesseres 42 6 2 Appendix B Supported MIB Objects uses see sesse sae see sae Bee RE Bee RE Bee GE Be ee GE Bee ee ee GE ee EE ee GE ee 44 6 3 Appendix C Standards AAA ge Es de sed N GN Ge de GN Nes ad N Ge N Ad gs 47 6 4 Appendix E References usus sesse ese see sesse sae Bee EE Bee GE ee AE Bee GE ee GE ee GE ee GE ee GE ee Be GE ee GE ee Ge ee eg 49 Ver 1 1 February 2011 Page 4 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y Ver 1 1 February 2011 Page 5 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 1 Introduction The WorkCentre 7545 7556 multifunction systems are among the latest versions of Xerox copier and multifunction devices
30. WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y 2 8 2 10 Ports 161 162 SNMP These ports support the SNMPv1 SNMPv2c and SNMPv3 protocols Please note that SNMP v1 does not have any password or community string control SNMPv2 relies on a community string to keep unwanted people from changing values or browsing parts of the MIB This community string is transmitted on the network in clear text so anyone sniffing the network can see the password Xerox strongly recommends that the customer change the community string upon product installation SNMP is configurable and may be explicitly enabled or disabled in the Properties tab of the device s web pages SNMP traffic may be secured if an IPSec tunnel has been established between the agent the device and the manager i e the user s PC The device supports SNMPv3 which is an encrypted version of the SNMP protocol that uses a shared secret Secure Sockets Layer must be enabled before configuring the shared secret needed for SNMPv3 2 8 2 11 Port 389 LDAP This is the standard LDAP port used for address book queries in the Scan to Email feature 2 8 2 12 Port 396 Netware This configurable port is used when Novell Netware is enabled to run over IP 2 8 2 13 Port 427 SLP When activated this port is used for service discovery and advertisement The device will advertise itself as a printer and also listen for SLP queries using this port It is
31. Xerox Y Xerox WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Version 1 1 Prepared by Larry Kovnat Xerox Corporation 800 Phillips Road Rochester New York 14580 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 2011 Xerox Corporation All rights reserved Xerox and the sphere of connectivity design are trademarks of Xerox Corporation in the United States and or other counties Other company trademarks are also acknowledged Document Version 1 00 February 2011 Contributors Michael Barrett Steve Beers Bob Crumrine Bob Easterly Mike Faraoni Gordon Farquhar Mirelsa Fontanes Tim Hunter Larry Kovnat Tom Pierce Roger Rhodes Steve Sydorowicz R Ben Wilkie Bob Zolla Ralph H Stoos Jr Ver 1 1 February 2011 Page 2 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 1 INTRODUCTION cantaran 6 1 1 AP NN 6 1 2 Target Audiente GEE N OE N EE SSKA ESEOS KAOSE NANESE POSTES r esra SEa S 6 1 3 Disclaimer use sesse sesse se se see Be Ee Be Ee Be RE BE Be Ee Be EE TE Be Gee E Se ee es 6 2 DEVICE DESCRIPTION ien ENE ee ee RARA 7 2 1 Security relevant SubsysteMS esse see seese see soe ee ee GE Gee Ge AE Se GE ee GE ee GE ee GE ee GE ee GE ee GE ee GE ee Ge ee 7 21M Physicall Partiti Onin EE AE EE AE ER RE EG OR EE EER N 7 2 1 2 Security Functions allocated to Subsystems ees s
32. Y Physical external Power Cord Interface Power Supply EE gt TOE Physical Boundary Physical external interface y PSTN R411 Port Figure 2 2 System functional block diagram Ver 1 1 February 2011 Page 8 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox D 2 1 2 Security Functions allocated to Subsystems Security Function Subsystem Image Overwrite Controller Graphical User Interface System Authentication Controller Graphical User Interface Network Authentication Controller Graphical User Interface Security Audit Controller Cryptographic Operations Controller User Data Protection SSL Controller User Data Protection IP Filtering Controller User Data Protection IPSec Controller User Data Protection Disk Encryption Controller Network Management Security Controller Fax Flow Security Fax Module Controller Graphical User Interface Security Management Controller Graphical User Interface Table 1 Security Functions allocated to Subsystems 2 2 Controller 2 2 1 Purpose The controller provides both network and direct connect external interfaces and enables copy print email network scan server fax internet FAX and LanFAX functionality Network scanning server fax internet fax and LanFax are standard features Image Overwrite which is included as a standar
33. ault port for WS Discovery the discovery of services in an ad hoc network with a minimum of networking services for example no DNS UDDI or other directory services It does this by announcing or advertising the existence of the printer and its services on the network when it becomes available and announcing its departure when unavailable The default state is selected enabled 2 8 2 22 Port 5353 Multicast DNS 5354 Multicast DNS Responder IPC Multicast DNS provides the ability to address hosts using DNS like names without the need of an existing managed DNS server The Multicast DNS Responder is a client in the printer that replies to multicast DNS requests for services on the local network The multicast DNS requests and replies conform to RFC 1034 and RFC 2782 and are broadcast to the destination IP address 224 0 0 251 on port 5353 The se ports will only be open if the Multicast DNS service is enabled 2 8 2 23 Port 9100 raw IP This allows downloading a PDL file directly to the interpreter This port has limited bi directionality via PJL back channel and allows printing only This is a configurable port and may be disabled in the Properties tab of the device s web pages 2 8 2 24 Port 28002 WS Web Service interface s used to programmatically configure device usage of Workflow Scanning features such as template management 2 8 2 25 Port 53202 53303 53404 WSD Transfer Web Service 53202 and Print Web Service 53303 and
34. d feature enables both Immediate and On Demand overwrite of any temporary image data created on disk The controller also incorporates an open source web server Apache that exports a Web User Interface WebUI through which users can submit jobs and check job and machine status and through which system administrators can remotely administer the machine The controller contains the image path which uses proprietary hardware and algorithms to process the scanned images into high quality reproductions Scanned images may be temporarily buffered in DRAM to enable electronic pre collation sometimes referred to as scan once print many When producing multiple copies of a document the scanned image is processed and buffered in the DRAM in a proprietary format Extended buffer space for very large documents is provided on the network disk The buffered bitmaps are then read from DRAM and sent to the Image Output Terminal IOT for marking on hardcopy output For long documents the production of hardcopy may begin before the entire original is scanned achieving a level of concurrency between the scan and mark operations The controller operating system is Wind River Linux kernel v 2 6 27 Note Consistent with Flaw Remediation this baseline may be updated as indicated by the sign Unnecessary services such as rsh telnet and finger are disabled in the OS FTP is used in client only mode by the network scanning feature for the filing of scanned i
35. e is then uploaded to the device Alternatively the device will generate a self signed certificate In this case the generic Xerox root CA certificate must be downloaded from the device and installed in the certificate store of the user s browser The device supports only server authentication 2 8 2 15 Port 445 NETBIOS Microsoft DS This port is open and used only when NETBIOS Microsoft Networking Active Directory is enabled 2 8 2 16 Port 500 ISAKMP ISAKMP defines the procedures for authenticating a communicating peer creation and management of Security Associations key generation techniques and threat mitigation e g denial of service and replay attacks ISAKMP defines procedures and packet formats to establish negotiate modify and delete Security Associations ISAKMP can be implemented over any transport protocol All implementations must include send and receive capability for ISAKMP using UDP on port 500 Port 500 will only be open on the device if the IPsec service is enabled Ver 1 1 February 2011 Page 20 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y 2 8 2 17 Port 515 LPR This is the standard LPR printing port which only supports IP printing It is a configurable port and may be explicitly enabled or disabled in the Properties tab of the device s web pages 2 8 2 18 Port 631 IPP This port supports the Internet Printing Protocol It is not configurab
36. e name Device serial number Completion Status Success Failed 49 Smartcard CAC PIV access UserName if valid Card and Password are entered Device name Device serial number Process Name Ver 1 1 February 2011 Page 34 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Event ID Event description Entry Data 50 Process terminated Device name Device serial number Process name 51 ODIO scheduled Device name Device serial number ODIO type Full or Standard Scheduled time ODIO status Started Completed canceled Completion Status Success Failed Canceled 53 CPSR Backup File Name User Name Completion Status Normal Error IIO Status 54 CPSR Restore File Name User Name Completion Status Normal Error IIO Status 55 SA Tools Access Admin Device serial number Completion Status Locked Unlocked 57 Session Timer Logout Device Name Device Serial Number Interface Web LUI User Name who was logged out Session IP if available 58 Session Timer Interval Change Device Name Device Serial Number Interface Web LUI Timer affected by change User Name who made this change Session IP if available Completion Status 59 Feature Access Control Enable Disable Configure User Name Device Name Device Serial Number Completion Status Enabled D
37. eb servers outside of the customer firewall When the device is configured with an IP address it is as secure as any device inside the firewall The web pages are accessible only to authorized users of the network inside the firewall This service and port may be disabled in User Tools via the Local User Interface or via the TCP IP page in the Properties tab on the WebU Please note that when this is disabled IPP Port 631 is also disabled HTTP may be secured by enabling Secure Sockets Layer 2 8 2 5 1 Proxy Server The device can be configured to communicate through a proxy server Features that can make use of a proxy server include the Automatic Meter Read feature scanning to a remote repository or retrieving scan templates from a remote template pool 2 8 2 7 Kerberos This port is only open when the device is communicating with the Kerberos server to authenticate a user or to request a TGT to access the LDAP server To disable this port authentication must be disabled and this is accomplished via the Local User Interface This version of software has Kerberos 5 1 1 with DES Data Encryption Standard and 64 bit encryption The Kerberos code is limited to user authentication and is used to authenticate a user with a given Kerberos server as a valid user on the network Please note that the Kerberos server a 3rd party device needs to be set up for each user Once the user is authenticated the Kerberos software has completed it
38. ed IETF compliant 3 It is assumed that mandatory IETF string related MIB objects shall contain meaningful data not blank strings 4 The C notation indicates that the previously stated item is a true caveat condition The I notation indicates that the previous stated item should be regarded as information only 5 MIB objects that CANNOT be populated with meaningful data e g a machine may not have paper level sensors hence can only support 0 or 3 for more than 1 sheet for prtInputCurrentLevel will be considered a caveat denoted as C 6 The Printer MIB requires a few groups from RFC 1213 and RFC 1514 to be supported Therefore this assessment will indicate that these groups are supported as long as the basic MIB structures have been implemented Support Definitions Definition all MIB objects exists and are populated w meaningful data that is consistent w the hardware installed within the machine all MIB objects exists however 2 major bugs or less may exists w some of the objects that were not fixed MIB objects do not exist implementation was not planned MIB objects exists HOWEVER are NOT populated w meaningful data OR provide only default values OR contain 3 or more major bugs optional group that is NOT required by the RFC however an implementation may exist some MIB objects may not be populated w meaningful data SNMP version Network Transport support WorkCentre SNMPv1 RFC 1157
39. emote template pool The connection to the remote pool can be secured with SSL 3 4 Diagnostics 3 4 1 Service All product configurations To access onboard diagnostics from the local user interface Xerox service representatives must enter a unique 4 digit password This PIN is the same for all models across this product family but different from that used on other porudt families and cannot be changed 3 4 2 Alternate Boot via Serial Port Alternate Boot Alt boot is a means for the Portable Service Workstation PSW to directly connect to the controller The primary purpose of Alternate Boot is to provide the capability to boot the controller in case of hard disk failure to perform system diagnostics and load controller software independent of other sub systems To enter this mode a user must strike any key on the PSW within 10 seconds of power on If the 10 seconds times out then the normal boot sequence occurs and the serial port acts as a typical tty see next section However if this mode is entered a Xerox unique serial protocol is used to communicate to the alt boot code All commands are DOS type menu driven i e type in a number to start a command If a PSW is connected the application on the PSW cannot be accessed without logging on with a password see next section If the PSW is used and is successfully logged on then the Ethernet port is used to download executable files The serial port is used for commands and s
40. ents and servers will have the ability to establish an IPSec tunnel with the machine Thus device initiated operations like scanning cannot assume the existence of the tunnel unless a print job or other client initiated action has been previously run since the last boot at either end of the connection 2 8 2 Ports The following table summarizes all potentially open ports and subsequent sections discuss each port in more detail All ports can be disabled if not needed under control of the system administrator Default Type Service name Port 22 TCP SFTP 23 UDP NTP 25 TCP SMTP 53 UDP DNS 68 UDP DHC ACK Response to DHCP 80 TCP HTTP 88 UDP Kerberos 110 TCP POP3 client used for IFax 137 UDP NETBIOS Name Service 138 UDP NETBIOS Datagram Service SMB filing and Scan template retrieval 139 TCP NETBIOS Session Service SMB Authentication SMB filing 161 TCP UDP SNMP 162 TCP UDP SNMP trap 389 UDP LDAP 396 TCP Netware 427 UDP SLP 443 TCP SSL 445 TCP Microsoft DS 500 TCP ISAKMP 515 TCP LPR 631 TCP IPP 1900 TCP UDP SSDP 1901 UDP SSDP 3003 TCP http SNMP reply 3702 TCP UDP WSD Discovery 5353 TCP UDP Multicast DNS 5354 TCP Multicast DNS Responder IPC 9100 TCP raw IP 28002 TCP WS Scan Template Management Scan Extension Xerox Secure Access Authentication amp Authorization Configuration Dev
41. er PSec e i ie eee ai i ME Pe Internet Layer ae Py an pr Ay Tal gt gt ap Tw 1e a ris es SEE NN LAA Eed Network Layer la BO 1x Figure 2 6 IPv6 Network Protocol Stack 2 8 Logical Access 2 8 1 Network Protocols The supported network protocols are listed in Appendix D and are implemented to industry standard specifications i e they are compliant to the appropriate RFC and are well behaved protocols There are no Xerox unique additions to these protocols The device supports IPSec tunnel mode The print channel can be secured by establishing an IPSec association IPSec between a client and the device A shared secret is used to encrypt the traffic flowing through this tunnel SSL must Page 16 of 49 28 1 1 be enabled in order to set up the shared secret Ver 1 1 February 2011 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox When an IPSec tunnel is established between a client and the machine the tunnel will also be active for administration with SNMPv2 tools HP Open View etc providing security for SNMP SETs and GETS with an otherwise insecure protocol SNMP Traps may not be secure if either the client or the device has just been rebooted IP Filtering can be useful to prevent SNMP calls from non IPSec clients Once an IPSec channel is established between two points it stays open until one end reboots or goes into power saver Only network cli
42. esse ee ke ee ee ee ee ee ed ee ke ee ke ee ee ee 9 2 2 Controller E se sesse se see se see Be EE Be Ee Be Ee Be Ee Be EE Be Ee Be Ee Be EE Be EE Be Ee Be EE Be Ee Be EE Be ee Be See Se ee Se ees 9 22i ui ER N OE NE EE RE EE EE EE 9 22 2 Memory Components AO RE EE EE EE N 10 2 2 3 External Connections sesse esse ee ee ee AA ee Aa ai ee o Re ar ke ee on ee e ee ee E 11 224 USB A e E E A ateea pacauten tases tere e e tence 13 2 3 Fax Module sesse se sesse se see se se A EER Se EE EE E Be Ee Be EE Be RE Ee De EE Se EE Se EE Se ee Be ee Ee ee es 13 MES N id se AA ER RE EE KEER OR EE EE 13 DD Die ek SR LO AE EE OR EE EE EE EE EE EE 13 2 4 CANNOT AE nano ron narco ron narco ron n non ron nr cn ron r ron ron canon nono ron ronca ron ron raroc nono ronronosoonos 14 224 PUDO o ee GE 14 24 Hatd W AUS iia EE EE ee ee ee ee Ge ER GE EE ee Oe oe e oe se 14 2 5 Graphical User Interface GUI sessies sen see Re se ee RE Ee Ee ese nin Ee Ee ee Rek Ee SEE Ke seges Kie ees kens EE Ee 14 LI PULPOSC ii EE EE RE eduevateeuleten 14 2 6 Marking Engine also known as the Image Output Terminal or TOT sesse sesse see sesse see sesse ee ee ee ees 14 2 0 N Se se SR RE ER N EE E e E iges abecaveeon 14 26 2 Had W ANG ie Ge ee EE De oe bg ee oe go Ee EE E EE we A ed ee ve ee 14 2 7 System Software Structure ococconooconccnonconocnnncononennconocnnnconoconeconoconoconon naco non oc co non nc GE ee ee ee GE ee Se Ge ee ees 14 2 1 1 Open soure COMIPOMENE
43. evice name Device serial number System shutdown Device name Device serial number Manual ODIO Standard started Device name Device serial number Manual ODIO Standard complete Device name Device serial number Overwrite Status Print job Job name User Name Completion Status IIO status Accounting User ID Accounting Account ID Network scan job Job name User Name Completion Status IIO status Accounting User ID Accounting Account ID total number net destination net destination Server fax job Job name User Name Completion Status IIO status Accounting User ID Accounting Account ID Total fax recipient phone numbers fax recipient phone numbers net destination Ver 1 1 February 2011 Page 31 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Event Event description ID Entry Data 8 IFAX Job name User Name Completion Status IIO status Accounting User ID Accounting Account ID total number of smtp recipients smtp recipients 9 Email job Job name User Name Completion Status IIO status Accounting User ID Accounting Account ID total number of smtp recipients smtp recipients 10 Audit Log Disabled Device name Device serial number 11 Audit Log Enabled Device name Device serial number 12 Copy Job name User Name Completion Status IIO status Accounting U
44. for the general office 1 1 Purpose The purpose of this document is to disclose information for the WorkCentre products with respect to device security Device Security for this paper is defined as how image data is stored and transmitted how the product behaves in a networked environment and how the product may be accessed both locally and remotely Please note that the customer is responsible for the security of their network and the WorkCentre products do not establish security for any network environment The purpose of this document is to inform Xerox customers of the design functions and features of the WorkCentre products relative to Information Assurance IA This document does NOT provide tutorial level information about security connectivity PDLs or WorkCentre products features and functions This information is readily available elsewhere We assume that the reader has a working knowledge of these types of topics However a number of references are included in the Appendix 1 2 Target Audience The target audience for this document is Xerox field personnel and customers concerned with IT security 1 3 Disclaimer The information in this document is accurate to the best knowledge of the authors and is provided without warranty of any kind In no event shall Xerox Corporation be liable for any damages whatsoever resulting from user s use or disregard of the information provided in this document including direct indirect
45. ged in and inform the device of logon issues using error messages The authentication steps are 1 The device presents the appropriate screens to tell the user what needs to be done to authenticate 2 The user follows the authentication instructions like swiping a card and or entering a PIN or password 3 User is authenticated and the device will complete any Authorization and Personalization as would have been done if the user authenticated using a system supplied solution 3 2 2 5 DDNS The implementation in the device does not support any security extensions 3 3 System Accounts 3 3 1 Printing Multifunction models only The device may be set up to connect to a print queue maintained on a remote print server The login name and password are sent to the print server in clear text IPSec should be used to secure this channel 3 3 2 Network Scanning Multifunction models only Network Scanning may require the device to log into a server The instances where the device logs into a server are detailed in the following table Users may also need to authenticate for scanning This authentication is detailed in subsequent sections 3 3 2 1 Device log on Scanning feature Device behavior Scan to File Public Template The device logs in to the scan repository as set up by the SA in the Properties tab on the WebUI The credentials may be the user s credentials or system credentials Ver 1 1 February 2011 Page 27
46. ice Configuration 53202 TCP WSD Transfer 53303 TCP WSD Print 53404 TCP WSD Scan 61100 TCP WS XEIP Proxy Configuration 61200 TCP WS User Interface Configuration 61400 TCP WS Digital Certificate Management 61502 TCP WS Extensible Service Registration 61503 TCP WS Session Data Ver 1 1 February 2011 Page 17 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y Table 7 Network Ports Please note that there is no ftp port in this list ftp is only used to export scanned images and to retrieve Scan Job Templates and will open port 21 on the remote device An ftp port is never open on the controller itself 2 8 2 1 Port 22 SFTP This port is used to securely encrypt the user name password and data being transferred to a network server repository 2 8 2 2 Port 23 NTP This port is used to retrieve the time from a network server 2 8 2 3 Port 25 SMTP This unidirectional port is open only when Scan to E mail or Internet Fax I Fax is exporting images to an SMTP server or when email alerts are being transmitted SMTP messages amp images are transmitted to the SMTP server from the device 2 8 2 4 Port 53 DNS Designating a DNS server will allow the device to resolve domain names This can be configured via the WebUI 2 8 2 5 Port 68 DHCP This port is used only when performing DHCP and is not open all of the time To permanently close this port DHCP must be e
47. isabled Configured Interface Web Local CAC SNMP Session IP address if available 60 Device Clock NTP Enable Disable Device Name Device serial number Enable Disable NTP NTP Server IP Address Completion Status Success Failed 61 Grant Revoke Admin Device Name Device Serial Number User Name of target user Grant or Revoke the admin right Completion Status Success Failed 62 Smartcard CAC PIV Enable Disable Configure UserName Device Name Device Serial Number Completion Status Success Failed 63 IPv6 Enable Disable Configure UserName Device Name Device Serial Number Completion Status Success Failed 64 802 1x Enable Disable Configure UserName Device Name Device Serial Number Completion Status Success Failed Ver 1 1 February 2011 Page 35 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Event ID Event description Entry Data 65 Abnormal System Termination Device Name Device Serial Number 66 Local Authentication UserName Device Name Device Serial Number Completion Status Enabled Disabled 67 Web User Interface Authentication Enable Network or Local UserName Device Name Device Serial Number Authentication Method Enabled Network Local 69 Xerox Secure Access Login UserName Device Name Device Serial Number Co
48. ithm that is not FIPS compliant but you must acknowledge this in the validation process If FIPS mode is enabled when you enable a non compliant protocol such as SNMPv3 or NetWare a message appears to remind you that the protocol uses an encryption algorithm that is not FIPS compliant NOTE If you enable FIPS 140 2 Mode it may not be able to communicate with other network devices that use protocols that do not employ FIPS 140 2 validated algorithms When you enable FIPS 140 mode the printer validates its current configuration by performing the following checks e Validates certificates for features where the printer is the server in the client server relationship An SSL certificate for HTTPS is an example e Validates certificates for features where the printer is the client in the client server relationship CA Certificates for LDAP Xerox Extensible Interface Platform EIP 2 0 and Smart eSolutions are examples e Validates certificates that are installed on the printer but not used Certificates for HTTPS LDAP or SNMPv3 are examples e Checks features and protocols for non compliant encryption algorithms For example NetWare and SNMPv3 use encryption algorithms that are not FIPS compliant e Performs CAC PIV and NET card validation e Digital Signing and Encrypted e mail IPSec over IPV6 When validation is complete information and links display in a table at the bottom of the FIPS 140 2 configuration page of the webUI
49. k functions will be delayed until the overwrite is completed Copying is unavailable while the overwrite itself is underway but copies may be made while the controller is booting Upon completion and verification of the ODIO process a confirmation sheet is printed which indicates the status of the overwrite The completion status can be successful failed cancelled or timed out Please note that invocation of ODIO will cause currently processing print jobs to be aborted However scan jobs will not be aborted and so ODIO might fail The user should insure that all scan jobs have been completed before invoking ODIO Please refer to the customer documentation for a description on how failures are logged 4 5 3 Overwrite Timing The ODIO overwrite time is dependent on the type of hard disk in the product The overwrite and reset average time is 10 minutes but longer times are possible IIO is performed as a background operation with no user perceivable reduction in copy print or scan performance Ver 1 1 February 2011 Page 38 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y 4 6 FIPS 4 6 1 FIPS 140 2 Compliance You can enable the printer to check its current configuration to ensure that transmitted and stored data is encrypted as specified in FIPS 140 2 Level 1 Once FIPS 140 mode is enabled you can allow the printer to use a protocol or feature that uses an encryption algor
50. le This is disabled when the http server is disabled 2 8 2 19 Port 1900 SSDP This port behaves similarly to the SLP port When activated this port is used for service discovery and advertisement The device will advertise itself as a printer and also listen for SSDP queries using this port It is not configurable This port is explicitly enabled disabled in the Properties tab of the device s web pages 2 8 2 20 Port 3003 http SNMP reply This port is used when the http server requests device information The user displays the Web User Interface WebUI and goes to a page where the http server must query the device for settings e g Novell network settings The http server queries the machine via an internal SNMP request hence this port can only open when the http server is active The machine replies back to the http server via this port It sends the reply to the loopback address 127 0 0 0 which is internally routed to the http server This reply is never transmitted on the network Only SNMP replies are accepted by this port and this port is active when the http server is active i e if the http server is disabled this port will be closed If someone attempted to send an SNMP reply to this port via the network the reply would have to contain the correct sequence number which is highly unlikely since the sequence numbers are internal to the machine 2 8 2 21 Port 3702 WSD Discovery WS Discovery Multicast This is the def
51. lts back to the Marking Engine Ver 1 1 February 2011 Page 29 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 5 The Marking Engine will report diagnostic results back to the PSW 3 4 4 4 Accessible Data The only files that are accessible are various log files fault log internal event log complete job log configuration log and a debug log The customer s network is accessible for diagnostic purposes only However there is one diagnostic routine Get Network Connectivity Data where the device will collect data about the network it is on and transmit the data The CSE is expected to seek permission from the customer before connecting the device to the LAN and performing this diagnostic The Novell test will only collect information for devices on the local network It will not provide information for any devices across a router The following data will be stored on the controller e Frame Type local network devices only e Server Name e Serverinternal network number e Server node Media Access Control address e Server NOS version number e Hop count to device local net The IP test will collect data from all responding IP routers and pd hosts The following data will be stored on the controller e Controller Interface where host discovered Ethernet Token Ring etc e Device subnet mask e Device IP address e Device Media Access Control MAC address The Novell te
52. ly mounted in a tray with external connections available at the rear of the machine The tray contains a single controller board An optional fax board may also be installed Disk s are mounted on the underside of the tray Below the controller tray are other connectors that distribute power and communications to external options such as a finisher or high capacity paper tray Ver 1 1 February 2011 Page 11 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Right Side View of Machine SBC Connector Layout Back Right Side of Machine Location of SBC 2B Gigabit a Ethernet Port Optional I FDI Slot Requires FDI option kit Diagnostic Display Optional FAX Slot 4 Requires Single or Dual line Fax option kit Figure 2 3 Back panel connections Interface Description Usage PSW USB Target Port Diagnostics and service Xerox Copier Assistant USB Host Ports Card readers SW upgrade USB Printing Scan to USB Ethernet Network Connectivity FAX line 1 RJ 11 Supports FAX Modem T 30 protocol only FAX line 2 RJ 11 optional Supports FAX Modem T 30 protocol only Foreign Device Interface FDI Allows connection of optional access control hardware accessory not present in evaluated TOE Allows premium charge for Legal paper Ver 1 1 February 2011 Page 12 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Di
53. mages and the retrieval of Scan Templates however the controller does not contain an FTP server The controller works with the Graphical User Interface GUI assembly to provide system configuration functions A System Administrator PIN must be entered at the GUI in order to access these functions Ver 1 1 February 2011 Page 9 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper 2 2 2 Memory Components Xerox Volatile Memory Description Type SRAM DRAM etc Size User Modifiable Function or Use Process to Y N Clear DDR2 SDRAM System Memory 2GB N Executable code Printer control data Power Off System temporary storage of job data DDR2 SDRAM Image Memory 1GB N Image data copy scan print Fax Power Off System SRAM 1MB N JPEG image processing Power Off System Additional Information There are two main blocks of Volatile memory in the controller System and Image memory System memory contains a mixture of executable code control data and job data Job data exists in System memory while the job is being processed Once the job is complete the memory is reused for the next job Likewise Image memory holds job data in a proprietary format while the job is being processed Once the job is complete the image memory is reused for subsequent jobs Non Volatile Memory Description Type Flash EEPROM etc Size
54. mpletion Status Success Failed 70 Print from USB Enable Disable User Name Device Name Device Serial Number Completion Status Enabled Disabled 71 USB Port Enable Disable User Name Device Name Device Serial Number USB Port Front Rear Completion Status Enabled Disabled 72 Scan to USB Enable Disable User Name Device Name Device Serial Number Completion Status Enabled Disabled 73 System Log Download Username IP of requesting device if available File names downloaded Destination IP address or USB device Completion status Success failed 74 Scan to USB Job Job Name User Name Completion Status IIO Status Accounting User ID Name Accounting Account ID Name 106 SA PIN Reset Device serial number Completion Status Success Failed 4 2 Xerox Standard Accounting Xerox Standard Accounting XSA intended primarily for use as an accounting service can be used as an internal authorization service XSA tracks copy scan including filing and email print and fax usage by individual user The system administrator can enable disable the feature via the LUI or Web UI add or delete users and set usage limits by service for each user If XSA is enabled a walk up user must enter a valid XSA ID before being allowed access to the device The device will confirm that the entered XSA ID matches an authorized user and that the usage limits for the
55. nd authorization In the local and network cases authentication and authorization take place as separate processes a user must be authenticated before being authorized to use the services of the device If the device is set for local authentication user account information will be kept in a local accounts database see the discussion in Chapter 4 of Xerox Standard Accounting and the authentication process will take place locally The system administrator can assign authorization privileges on a per user basis User access to services will be provided based on the privileges set for each user in the local accounts database When the device is set for network authentication the user s network credentials will be used to authenticate the user at the network domain controller Users can be authorized on an individual basis to access one or any combination of the following services Copy Fax Server Fax Reprint Saved Jobs Email Internet Fax Workflow Scanning Server Also users can be authorized to access one or any combination of the following machine pathways Services Job Status or Machine Status Assignment of users to the System Administrator role or the Accounting Administrator is managed by groups set up at the LDAP or Active Directory server Any user listed in the System Administrator group will be granted sys admin privileges at the device Likewise any user listed in the Accounting Administrator group will be granted the privileges
56. nly iese see see se se ee ee ee ee Re Re ee ee ee ee ee ee ee 2 3 4 DiagnostiEs ENAERE E ST A de de T Se Ee Le Ad E SS Ge ER Fe ee ede ge ee SE be OR ee 28 3 4 1 Service All product configurations iese sesse see ee ke ee ee ee ee ee ee ee Re Re rre ee ee E ee ee ee ee 28 3 4 2 Alternate Boot via Serial Port ooooononccnnncccnnoconocannonnnnonnnnnnncnonanonnnnnonancnnnn ee ee AA ee nro ee ee ee ee ee 28 343 AL EE RE ET EE EE N 28 3 4 4 Diagnostics via Portable Service Workstation PSW POTE esse sesse esse ee ese ee ek ed ee ke ee ee ke ee ee 28 JA Ee ti IE AR RE 30 4 SECURITY ASPECTS OF SELECTED FEATURES scsi 31 4 1 PUCIELOG EE sencupsadiengononseasupedoaseanensen esshsandondasancanedsabennsndasdonsasansnndicaasanen 31 4 2 Xerox Standard AccOUNtING sessccccsscsesccsssseccssssssscessssssesscssssesscssssessessssessessssessessssessessssessessssessessesesses 36 4 3 SMart eSolutiONS eese sesse se sesse se ese Be ee Se ee Be EE Be Be EE Be EE Be EE Be Ee Be SEE Se EE Be EE Be Ee BE Ee Se EE Be ee Se ee Se 37 AE GEE EE AO a EE aii 37 4 2 2 SUPPllES EE ME N EO ER EE EE N 37 EE Ni in ie EE ER N EE EE EN R 37 4 4 Encrypted Partitions sssccscsssscsscssssccssscsscsscsssssesssssssessesssssscesssssssesseesssessecsssssseesscecsessesecsessssecsessesecsers 37 4 5 NAAA EE GE GE GE EE GE GE GE GE ee Ge Ge ee ee ee 37 4 5 Ve NE ER N RR OE EE EE RE ER 38 ASS 2 User sl END RR ER EE tau RE OR OR dba ai 38 4 5 3 O
57. not configurable This port is explicitly enabled disabled in the Properties tab of the device s web pages 2 8 2 14 Port 443 SSL This is the default port for Secure Sockets Layer communication This port can be configured via the device s web pages SSL must be enabled before setting up either SNMPv3 or IPSec or before retrieving the audit log see Sec 4 1 SSL must also be enabled in order to use any of the Web Services Scan Template Management Automatic Meter Reads or Network Scanning Validation Service SSL should be enabled so that the device can be securely administered from the web UI When scanning SSL can be used to secure the filing channel to a remote repository SSL uses X 509 certificates to establish trust between two ends of a communication channel When storing scanned images to a remote repository using an https connection the device must verify the certificate provided by the remote repository A Trusted Certificate Authority certificate should be uploaded to the device in this case To securely administer the device the user s browser must be able to verify the certificate supplied by the device A certificate signed by a well known Certificate Authority CA can be downloaded to the device or the device can generate a self signed certificate In the first instance the device creates a Certificate Signing Request CSR that can be downloaded and forwarded to the well known CA for signing The signed device certificat
58. on between it and Xerox Only device ID device configuration current firmware versions meter read and supplies information is transferred The information is sent encrypted using https SSL 4 4 Encrypted Partitions When enabled by the customer the controller disk is encrypted using the AES algorithm with a 256 bit key The key is generated dynamically on each boot and is kept only in volatile memory 4 5 Image Overwrite The Image Overwrite Security feature provides both Immediate Image Overwrite IIO and On Demand Image Overwrite ODIO functions Immediately before a job is considered complete IIO will overwrite any temporary files associated with print network scan internet fax network fax or e mail jobs that had been created on the controller Ver 1 1 February 2011 Page 37 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Hard Disk The ODIO feature can be executed at any time by the SA and will overwrite the entire document image partitions of the controller Hard disk ODIO may also be scheduled to run at regular times A standard ODIO will overwrite all image data from memory and disks except for Jobs and Folders stored in the Reprint Saved Jobs feature Jobs stored in the Scan to Mailbox feature if installed Fax Dial Directories if fax card is installed and Fax Mailbox contents if fax card is installed A full ODIO will overwrite all image data from memory and disks as
59. ortable Service Workstation PWBA Printed Wire Board Assembly PWS Common alternative for PSW RFC Required Functional Capability SA System Administrator SFTP Secure File Transfer Protocol SLP Service Location Protocol SNMP Simple Network Management Protocol SRAM Static Random Access Memory SSDP Simple Service Discovery Protocol SSL Secure Sockets Layer TCP Transmission Control Protocol TIFF Tagged Image File Format UI User Interface URL Uniform Resource Locator UDP User Datagram Protocol WebUI Web User Interface the web pages resident in the WorkCentre Pro These are accessible through any browser using the machine s IP address as the URL XCMI Xerox Common Management Interface XSA Xerox Standard Accounting Ver 1 1 February 2011 Page 43 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Y 6 2 Appendix B Supported MIB Objects NOTES 1 The number of objects shown per MIB group represents the number of objects defined by the IETF standard for that MIB group It does not represent the instantiation of the MIB group which may contain many more objects 2 Some MIB objects defined within Input and Output groups of the Printer MIB RFC 1759 have a MAX ACCESS of RW However the Printer MIBv2 defines a MIB ACCESS of RO for these MIB objects within the Input and Output groups and all machines assessed support RO access Therefore RO access to these MIB objects is consider
60. orth Korea Sudan and Syria their nationals and other sanctioned entities such as persons listed on the Denied Parties List Xerox provides this information for the convenience of its customers and not as legal advice Customers are encouraged to consult with legal counsel to assure their own compliance with applicable export laws 2 8 2 8 Port 110 POP 3 Client This unidirectional port is used when receiving an Internet Fax I Fax or E Mail These jobs may only be printed and the port is only open if I Fax is enabled and while receiving the job It is not configurable 2 8 2 9 Ports 137 138 139 NETBIOS For print jobs these ports support the submission of files for printing as well as support Network Authentication through SMB Port 137 is the standard NetBIOS Name Service port which is used primarily for WINS Port 138 supports the CIFS browsing protocol Port 139 is the standard NetBIOS Session port which is used for printing Ports 137 138 and 139 may be configured in the Properties tab of the device s web page For Network Scanning features ports 138 and 139 are used for both outbound i e exporting scanned images and associated data and inbound functionality i e retrieving Scan Templates In both instances these ports are only open when the files are being stored to the server or templates are being retrieved from the Template Pool For these features SMB protocol is used Ver 1 1 February 2011 Page 19 of 49 XEROX
61. per Xerox Y 3 2 2 3 Common Access Card CAC1 With the addition of the CAC accessory kit the device is able to utilize NET cards with Gemalto Version 2 as well as the new 144K CAC and PIV cards This includes a 2048 bit certificate key Sending encrypted data to multiple recipients is made possible using an organizations LDAP directory The user may view certificates of potential recipients to ensure they are sent to the intended parties Controls are also in place to prevent sending to users without encryption certificates Audit logs record which e mails were sent encrypted and those that were not In addition Confirmation Reports detail which recipients received e mail and if it was encrypted or not 3 2 2 4 Xerox Secure Access Via Xerox Secure Access a customer can enable additional authentication methods to the device with minimal impact on the system software By using a Web Service and 3rd party equipment any authentication method that complies with the established interface into the device can be used This includes biometric and card access Xerox Secure Acess is a Web Service that allows a 3rd party to use its own mechanisms including accessing the customers authentication servers to authenticate a user The device can also take in additional information about the user to allow for two factor authentication The Web Service interface allows the 3rd party to tell the device that someone was successfully logged in who log
62. s task This code will not and cannot be used to encrypt or decrypt documents or other information This feature is based on the Kerberos program from the Massachusetts Institute of Technology MIT The Kerberos network authentication protocol is publicly available on the Internet as freeware at http web mit edu kerberos www Please note The device ignores much of the information provided by Kerberos for authenticating For the most part the device only pays attention to information that indicates whether authentication has passed Other information that the server may return e g what services the user is authenticated for is ignored or disabled in the Xerox implementation This is not an issue since the only service a user is being authenticated for is access to an e mail directory No other network services are accessible from the Local UI Xerox has received an opinion from its legal counsel that the device software including the implementation of a Kerberos encryption protocol in its network authentication feature is not subject to encryption restrictions based on Export Administration Regulations of the United States Bureau of Export Administration BXA This means that it can be exported from the United States to most destinations and purchasers without the need for previous approval from or notification to BXA At the time of the opinion restricted destinations and entities included terrorist supporting states Cuba Iran Libya N
63. sclosure Paper Xerox Scanner Proprietary connection between the Scan Module and the Copy Controller Located inside machine UI Video and power Located inside machine SIM Options enablement Table 4 Controller External Connections 2 2 4 USB Ports The WorkCentre contains a host connector for a USB flash drive enabling upload of software upgrades and download of network logs or machine settings files Autorun is disabled on this port No executable files will be accepted by the port Modifying the software upgrade network logging or saved machine settings files will make the files unusable on a WorkCentre The data in the network logging file is encrypted and can only be decrypted by Xerox service The machine settings that can be saved and restored by a service technician are limited to controller and fax parameters that are needed for normal operation For example the fax address book can be saved and restored by a service technician There is no method for a user administrator or technician to move image data from the WorkCentre to a USB device USB Port s USB port and location Purpose Front panel 1 Host port User retrieves print ready files from Flash Media or stores scanned files on Flash Media Physical security of this information is the responsibility of the user or operator Rear panel 2 Host ports User retrieves print ready files from Flash Media or stores scanned files
64. ser ID Accounting Account ID Total fax recipient phone numbers fax recipient phone numbers 13 Efax Job name User Name Completion Status IIO status Accounting User ID Accounting Account ID Total fax recipient phone numbers fax recipient phone numbers 14 Lan Fax Job Job name User Name Completion Status IIO status Accounting User ID Accounting Account ID Total fax recipient phone numbers fax recipient phone numbers 15 Data Encryption enabled Device name Device serial number 16 Manual ODIO Full started Device name Device serial number 17 Manual ODIO Full complete Device name Device serial number Overwrite Status 20 Scan to Mailbox job Job name or Dir name User Name Completion Status IIO status 21 Delete File Dir Job name or Dir name User Name Completion Status IIO status Ver 1 1 February 2011 Page 32 of 49 D XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox Event Event description ID Entry Data 23 Scan to Home UserName Device name Device serial number Completion Status Enabled Disabled 24 Scan to Home job Job name or Dir name User Name Completion Status Normal Error IIO status Accounting User ID Name Accounting Account ID Name total number net destination net destination 25 Copy store job Job name or Dir name User Name Completion Status Normal Error
65. st will NOT collect e Print Queue Name e Attached to File Server status e Attached to Print Queue status The IP test will NOT collect e Device Name e Gateway IP address e Destination Network number e Hop count to device 3 4 5 Summary As stated above accessibility of customer documents files or network resources is impossible via the PSW In the extremely unlikely event that someone did spoof the Xerox proprietary protocols only diagnostic activities can be executed Ver 1 1 February 2011 Page 30 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 4 Security Aspects of Selected Features 4 1 Audit Log D The device maintains a security audit log Recording of security audit log data can be enabled or disabled by the SA The audit log is implemented as a circular log containing a maximum of 15000 event entries meaning that once the maximum number of entries is reached the log will begin overwriting the earliest entry Only an SA will be authorized to download the log from the device The log may only be exported over an https connection so SSL must be set up before retrieving the log The log is exported in MS Excel comma separated file format The log does not clear when it is disabled and will persist through power cycles The following table lists the events that are recorded in the log Event ID Event description Entry Data System startup D
66. tatus Again please refer to the PSW section for details 3 4 3 tty Mode When the controller has completed booting a login line will be displayed This mode is a typical tty window and is password protected This password changes with each major software release The password is stored on the controller hard disk in an encrypted format similarly to how UNIX encrypts and stores passwords Through this port a user can gain information and access to any files or information stored in the controller DRAM or controller hard disk However this mode is only used by a CSE if directed by a Field Engineer when all other diagnostics fail to solve a problem The written repair procedures that direct the CSE never employ this mode 3 4 4 Diagnostics via Portable Service Workstation PSW Port When connected to the PSW Port the PSW provides an extensive suite of diagnostic functions for use by the Xerox Customer Service Engineer CSE The over the wire protocol is Xerox proprietary This port cannot process any other Ver 1 1 February 2011 Page 28 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox protocol except this proprietary protocol used for machine diagnosis Also the PSW must have an application loaded to connect to and communicate with the device Customer documents or files cannot be accessed during a diagnostic session nor are network servers accessible through this port 3 4 4 1 Access
67. the system administrator the flexibility for the user to choose signing and encryption on a job by job basis or require one or the other for all jobs NOTE The crypto algorithms used for smart card authentication signing and encryption are not FIPS validated in the launch version of software Ver 1 1 February 2011 Page 40 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox 5 Responses to Known Vulnerabilities 5 1 Security Xerox www xerox com security Xerox maintains an evergreen public web page that contains the latest security information pertaining to its products Please see www xerox com security Ver 1 1 February 2011 Page 41 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper 6 6 1 PI AMR ASIC CAT CSE DADF DADH DHCP DNS DDNS DRAM EEPROM EGP GB HP HTTP IBM ICMP IETF IFAX IIO IIT IT IOT IP IPSec IPX LAN LDAP LDAP Server LED LPR MAC MIB n a NDPS NETBEUI NETBIOS NOS NVRAM Ver 1 1 February 2011 Xerox APPENDICES Appendix A Abbreviations Application Programming Interface Automatic Meter Reads Application Specific Integrated Circuit This is a custom integrated circuit that is unique to a specific product Customer Administration Tool Customer Service Engineer Duplex Automatic Document Feeder Handler Dynamic Host Configuration Protocol Domain Name Server
68. uns the test and responds with a Test XXX passed or failed reply This is illustrated in the following diagram 3 4 4 3 Network Diagnostics executed from the PSW Network Controller Marking Engine LA Marking Engine information may be Era retrieved no image data may be accessed PSW Laptop computer The PSW allows the technician to execute certain Network diagnostic tests by connecting directly to the serial port on the controller These tests are executed with the device disconnected from the customer s LAN The tests that are available are echo tests for the various protocols e g IP IPX where the controller sends a dummy message to itself to test the transmit and receive capabilities of its own connectivity stacks Each protocol is tested individually and each test must be invoked separately The diagnostic sequence is as follows 1 After the PSW and Marking Engine have established a connection the PSW must send the expected synchronization message to the machine 2 The Marking Engine will respond with an acknowledge message containing its serial number 3 The PSW will send a request for Diagnostic service and a password 4 Assuming the password is authentic the Marking Engine will either execute a Marking Engine diagnostic or else forward the diagnostic request to the controller If this is a network diagnostic the controller will execute the diagnostic and report resu
69. well as the items excluded from a standard ODIO 4 5 1 Algorithm The overwrite mechanism for both IIO and ODIO conforms to the U S Department of Defense Directive 5200 28 M Section 7 Part 2 paragraph 7 2022 The algorithm for the Image Overwrite feature is Step 1 Pattern 1 is written to the sectors containing temporary files IIO or to the entire spooling area of the disks ODIO hex value 0x35 ASCII 5 Step 2 Pattern 2 is written to the sectors containing temporary files IIO or to the entire spooling area of the disks ODIO hex value OxCA ASCII compliment of 5 Step 3 Pattern 3 is written to the sectors containing temporary files IIO or to the entire spooling area of the disks ODIO hex value 0x97 ASCII Step 4 10 of the overwritten area is sampled to ensure Pattern 3 was properly written The 10 sampling is accomplished by sampling a random 10 of the overwritten area 4 5 2 User Behavior TIO can be enabled at the local UI only Once enabled TO is invoked automatically immediately prior to the completion of a print network scan internet fax network fax or e mail job If TIO completes successfully status is displayed in the Job Queue However if IIO fails a popup will appear on the Local UI recommending that the user run ODIO and a failure sheet will be printed ODIO may be invoked either from the Local UI in Tools Pathway or from the CentreWare Internet Services Web UI Networ
70. xplicitly disabled This is done in User Tools via the Local User Interface or via the TCP IP page in the Properties tab on the WebUI 2 8 2 6 Port 80 HTTP The embedded web pages communicate to the machine through a set of unique APIs and do not have direct access to machine information Network Controller ION request request http server machine response information Z NI gt 0 gt I3 response l I Network The HTTP port can only access the HTTP server residing in the controller The embedded HTTP server is Apache The purpose of the HTTP server is to e Give users information of the status of the device e Viewthe job queue within the device and delete jobs e Allow users to download print ready files and program Scan to File Job Templates e Allow remote administration of the device Many settings that are on the Local UI are replicated in the device s web pages Users may view the properties of the device but not change them without logging into the machine with administrator privileges Ver 1 1 February 2011 Page 18 of 49 XEROX WorkCentre 7525 7530 7535 7545 7556 Information Assurance Disclosure Paper Xerox The HTTP server can only host the web pages resident on the hard disk of the device It does not and cannot act as a proxy server to get outside of the network the device resides on Hence the server cannot access any networks or w

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