Cisco IOS XR Router NDM Security Technical Implementation Guide

This Security Technical Implementation Guide is published as a tool to improve the security of Department of Defense (DoD) information systems. The requirements are derived from the National Institute of Standards and Technology (NIST) 800-53 and related documents. Comments or proposed revisions to this document should be sent via email to the following address: [email protected]

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Version / Release: V1R2

Published: 2019-12-20

Updated At: 2020-01-27 23:26:36

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    Vuln Rule Version CCI Severity Title Description Status Finding Details Comments
    SV-105509r1_rule CISC-ND-000010 CCI-000054 MEDIUM The Cisco router must be configured to limit the number of concurrent management sessions to an organization-defined number. Device management includes the ability to control the number of administrators and management sessions that manage a device. Limiting the number of allowed administrators and sessions per administrator based on account type, role, or access type is helpfu
    SV-105511r1_rule CISC-ND-000060 CCI-000015 MEDIUM The network element must provide automated support for account management functions. If account management functions are not automatically enforced, an attacker could gain privileged access to a vital element of the network security architecture. Account management functions include: assignment of group or role membership; identifying ac
    SV-105513r1_rule CISC-ND-000070 CCI-000016 MEDIUM The Cisco router must automatically remove or disable temporary user accounts after 72 hours. Temporary accounts are established as part of normal account activation procedures when there is a need for short-term accounts without the demand for immediacy in account activation. If temporary accounts remain active when no longer needed, they may be
    SV-105515r1_rule CISC-ND-000080 CCI-000017 MEDIUM The Cisco router must automatically disable accounts after a 35-day period of account inactivity. Since the accounts in the network device are privileged or system-level accounts, account management is vital to the security of the network device. Inactive accounts could be reactivated or compromised by unauthorized users, allowing exploitation of vuln
    SV-105517r1_rule CISC-ND-000140 CCI-001368 MEDIUM The Cisco router must be configured to enforce approved authorizations for controlling the flow of management information within the device based on control policies. A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If management information flow is not enforced based on approved authorizations, the network device may become compromised. Info
    SV-105519r1_rule CISC-ND-000150 CCI-000044 MEDIUM The Cisco router must be configured to enforce the limit of three consecutive invalid logon attempts after which time lock out the user account from accessing the device for 15 minutes. By limiting the number of failed login attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced.
    SV-105521r1_rule CISC-ND-000160 CCI-000048 MEDIUM The Cisco router must be configured to display the Standard Mandatory DoD Notice and Consent Banner before granting access to the device. Display of the DoD-approved use notification before granting access to the network device ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations, standards, a
    SV-105523r1_rule CISC-ND-000180 CCI-000052 MEDIUM Upon successful login, the Cisco router must notify the administrator of the date and time of the last login. Administrators need to be aware of activity that occurs regarding their network device management account. Providing administrators with information regarding the date and time of their last successful login allows them to determine if any unauthorized ac
    SV-105525r1_rule CISC-ND-000190 CCI-000053 MEDIUM Upon successful login, the Cisco router must notify the administrator of the number of unsuccessful login attempts since the last successful login. Administrators need to be aware of activity that occurs regarding their network device management account. Providing administrators with information regarding the number of unsuccessful attempts made to login to their account allows them to determine if a
    SV-105527r1_rule CISC-ND-000200 CCI-000366 MEDIUM The Cisco router must notify the administrator of changes to access and/or privilege parameters of the administrators account that occurred since the last logon. Providing administrators with information regarding security-related changes to their account allows them to determine if any unauthorized activity has occurred. Changes to the account could be an indication of the account being compromised. Hence, withou
    SV-105531r1_rule CISC-ND-000250 CCI-000172 MEDIUM The Cisco router must be configured to generate audit records when successful/unsuccessful attempts to logon with access privileges occur. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit reco
    SV-105533r1_rule CISC-ND-000280 CCI-000131 MEDIUM The Cisco router must produce audit records containing information to establish when (date and time) the events occurred. It is essential for security personnel to know what is being done, what was attempted, where it was done, when it was done, and by whom it was done in order to compile an accurate risk assessment. Logging the date and time of each detected event provides
    SV-105535r1_rule CISC-ND-000290 CCI-000132 MEDIUM The Cisco router must produce audit records containing information to establish where the events occurred. In order to compile an accurate risk assessment and provide forensic analysis, it is essential for security personnel to know where events occurred, such as device hardware components, device software modules, session identifiers, filenames, host names, a
    SV-105537r1_rule CISC-ND-000340 CCI-000139 MEDIUM The Cisco router must alert the ISSO and SA (at a minimum) in the event of an audit processing failure. It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability and system opera
    SV-105539r1_rule CISC-ND-000440 CCI-001350 MEDIUM The Cisco router must use cryptographic mechanisms to protect the integrity of audit information at rest. Audit records may be tampered with. If the integrity of audit data were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. Protection of audit records and audi
    SV-105541r1_rule CISC-ND-000470 CCI-000382 HIGH The Cisco router must be configured to be configured to prohibit the use of all unnecessary and nonsecure functions and services. Network devices are capable of providing a wide variety of functions and services. Some of the functions and services provided by default may not be necessary to support essential organizational operations. Additionally, it is sometimes convenient to prov
    SV-105543r1_rule CISC-ND-000480 CCI-000764 HIGH The Cisco router must uniquely identify and authenticate organizational administrators (or processes acting on behalf of organizational administrators). To assure accountability and prevent unauthenticated access, organizational administrators must be uniquely identified and authenticated for all network management accesses to prevent potential misuse and compromise of the system. This control does not a
    SV-105545r1_rule CISC-ND-000490 CCI-001358 MEDIUM The Cisco router must be configured with only one local account to be used as the account of last resort in the event the authentication server is unavailable. Authentication for administrative (privileged level) access to the device is required at all times. An account can be created on the device's local database for use when the authentication server is down or connectivity between the device and the authenti
    SV-105547r1_rule CISC-ND-000500 CCI-000765 MEDIUM The Cisco router must use multifactor authentication for network access to privileged accounts. Multifactor authentication requires using two or more factors to achieve authentication. Factors include: (i) something a user knows (e.g., password/PIN); (ii) something a user has (e.g., cryptographic identification device, token); or (iii) something
    SV-105549r1_rule CISC-ND-000510 CCI-000767 MEDIUM The Cisco router must use multifactor authentication for local access to privileged accounts. Multifactor authentication is defined as using two or more factors to achieve authentication. Factors include: (i) Something a user knows (e.g., password/PIN); (ii) Something a user has (e.g., cryptographic identification device, token); or (iii) Som
    SV-105551r1_rule CISC-ND-000530 CCI-001941 MEDIUM The Cisco router must be configured to implement replay-resistant authentication mechanisms for network access to privileged accounts. A replay attack may enable an unauthorized user to gain access to the application. Authentication sessions between the authenticator and the application validating the user credentials must not be vulnerable to a replay attack. An authentication process
    SV-105553r1_rule CISC-ND-000540 CCI-000795 MEDIUM The Cisco router must disable identifiers (individuals, groups, roles, and devices) after 35 days of inactivity. Inactive identifiers pose a risk to network devices. Attackers that are able to exploit an inactive identifier can potentially obtain and maintain undetected access to the device. Owners of inactive accounts may not notice if unauthorized access to their
    SV-105555r1_rule CISC-ND-000640 CCI-000198 MEDIUM The Cisco router must enforce 24 hours as the minimum password lifetime. Enforcing a minimum password lifetime helps prevent repeated password changes to defeat the password reuse or history enforcement requirement. Restricting this setting limits the user's ability to change their password. Passwords need to be changed at sp
    SV-105557r1_rule CISC-ND-000650 CCI-000199 MEDIUM The Cisco router must enforce a 60-day maximum password lifetime restriction. Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed at specific intervals. One method of minimizing this risk is to use complex passwords and periodically change them. If the network device does not li
    SV-105559r1_rule CISC-ND-000720 CCI-001133 HIGH The Cisco router must be configured to terminate all network connections associated with device management after 10 minutes of inactivity. Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminat
    SV-105561r1_rule CISC-ND-000790 CCI-000366 MEDIUM The Cisco router must activate a system alert message, send an alarm, and/or automatically shut down when a component failure is detected. Predictable failure prevention requires organizational planning to address device failure issues. If components key to maintaining the device's security fail to function, the device could continue operating in an insecure state. If appropriate actions are
    SV-105563r1_rule CISC-ND-000800 CCI-001683 MEDIUM The Cisco router must generate alerts that can be forwarded to the administrators and ISSO when accounts are created. Once an attacker establishes initial access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to simply create a new account. Notification of account creation is
    SV-105565r1_rule CISC-ND-000810 CCI-001684 MEDIUM The Cisco router must generate alerts that can be forwarded to the administrators and ISSO when accounts are modified. Once an attacker establishes initial access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to simply modify an existing account. Notification of account modif
    SV-105567r1_rule CISC-ND-000820 CCI-001685 MEDIUM The Cisco router must generate alerts that can be forwarded to the administrators and ISSO when accounts are disabled. When application accounts are disabled, administrator accessibility is affected. Accounts are utilized for identifying individual device administrators or for identifying the device processes themselves. In order to detect and respond to events that aff
    SV-105569r1_rule CISC-ND-000830 CCI-001686 MEDIUM The Cisco router must generate alerts that can be forwarded to the administrators and ISSO when accounts are removed. When application accounts are removed, administrator accessibility is affected. Accounts are utilized for identifying individual device administrators or for identifying the device processes themselves. In order to detect and respond to events that affe
    SV-105573r1_rule CISC-ND-000890 CCI-002132 MEDIUM The Cisco router must notify System Administrators (SAs) and Information System Security Officers (ISSMs) when accounts are created, or enabled when previously disabled. Once an attacker establishes initial access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to simply enable a new or disabled account. Notification of account
    SV-105575r1_rule CISC-ND-000900 CCI-000366 MEDIUM The Cisco router must be configured to be compliant with at least one IETF Internet standard authentication protocol. Protecting access authorization information (i.e., access control decisions) ensures that authorization information cannot be altered, spoofed, or otherwise compromised during transmission. In distributed information systems, authorization processes and
    SV-105577r1_rule CISC-ND-000950 CCI-002238 MEDIUM The Cisco router must automatically lock the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded. By limiting the number of failed login attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account.
    SV-105579r1_rule CISC-ND-000960 CCI-000366 MEDIUM The Cisco router must notify the administrator, upon successful logon (access), of the location of last logon (terminal or IP address) in addition to the date and time of the last logon (access). Administrators need to be aware of activity that occurs regarding their account. Providing them with information deemed important by the organization may aid in the discovery of unauthorized access or thwart a potential attacker. Organizations should co
    SV-105581r1_rule CISC-ND-000980 CCI-001849 MEDIUM The Cisco router must be configured to allocate audit record storage capacity in accordance with organization-defined audit record storage requirements. In order to ensure network devices have a sufficient storage capacity in which to write the audit logs, they need to be able to allocate audit record storage capacity. The task of allocating audit record storage capacity is usually performed during initia
    SV-105583r1_rule CISC-ND-000990 CCI-001855 MEDIUM The Cisco router must generate an immediate alert when allocated audit record storage volume reaches 75% of repository maximum audit record storage capacity. If security personnel are not notified immediately upon storage volume utilization reaching 75%, they are unable to plan for storage capacity expansion. This could lead to the loss of audit information. Note that while the network device must generate the
    SV-105585r1_rule CISC-ND-001000 CCI-001858 MEDIUM The Cisco router must be configured to generate an alert for all audit failure events. It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without a real-time alert, security personnel may be unaware of an impending failure of the audit capability and system operation
    SV-105587r1_rule CISC-ND-001030 CCI-000366 MEDIUM The Cisco router must be configured to synchronize its clock with the primary and secondary time sources using redundant authoritative time sources. The loss of connectivity to a particular authoritative time source will result in the loss of time synchronization (free-run mode) and increasingly inaccurate time stamps on audit events and other functions. Multiple time sources provide redundancy by i
    SV-105589r1_rule CISC-ND-001040 CCI-001889 MEDIUM The Cisco router must record time stamps for audit records that meet a granularity of one second for a minimum degree of precision. Without sufficient granularity of time stamps, it is not possible to adequately determine the chronological order of records. Time stamps generated by the application include date and time. Granularity of time measurements refers to the degree of synchron
    SV-105591r1_rule CISC-ND-001050 CCI-001890 MEDIUM The Cisco router must be configured to record time stamps for log records that can be mapped to Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT). If time stamps are not consistently applied and there is no common time reference, it is difficult to perform forensic analysis. Time stamps generated by the application include date and time. Time is commonly expressed in UTC, a modern continuation of G
    SV-105593r1_rule CISC-ND-001060 CCI-001811 MEDIUM The Cisco router must generate an alert that will then be sent to the ISSO, ISSM, and other designated personnel (deemed appropriate by the local organization) when the unauthorized installation of software is detected. Unauthorized software not only increases risk by increasing the number of potential vulnerabilities, it also can contain malicious code. Sending an alert (in real time) when unauthorized software is detected allows designated personnel to take action on t
    SV-105595r1_rule CISC-ND-001100 CCI-002038 MEDIUM The Cisco router must require users to re-authenticate when privilege escalation or role changes occur. Without re-authentication, users may access resources or perform tasks for which they do not have authorization. When devices provide the capability to change security roles, it is critical the user re-authenticate. In addition to the re-authentication
    SV-105597r1_rule CISC-ND-001110 CCI-001953 MEDIUM The Cisco router must accept Personal Identity Verification (PIV) credentials. The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use of the CAC to support identity management and personal authentication for systems covered under HSPD 12, as well as a primary com
    SV-105599r1_rule CISC-ND-001120 CCI-001954 MEDIUM The Cisco router must electronically verify Personal Identity Verification (PIV) credentials. The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use of the CAC to support identity management and personal authentication for systems covered under HSPD 12, as well as a primary com
    SV-105601r1_rule CISC-ND-001130 CCI-001967 MEDIUM The Cisco router must be configured to authenticate SNMP messages using a FIPS-validated Keyed-Hash Message Authentication Code (HMAC). Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Bidirectional authentication provides stronger safeguards to validate the identity of other devices for connections that are of gre
    SV-105603r1_rule CISC-ND-001140 CCI-000068 MEDIUM The Cisco router must be configured to encrypt SNMP messages using a FIPS 140-2 approved algorithm. Without the strong encryption that is provided by the SNMP Version 3 User-based Security Model (USM), an unauthorized user can gain access to network management information that can be used to create a network outage.
    SV-105605r1_rule CISC-ND-001150 CCI-001967 MEDIUM The Cisco router must be configured to authenticate NTP sources using authentication that is cryptographically based. If Network Time Protocol is not authenticated, an attacker can introduce a rogue NTP server. This rogue server can then be used to send incorrect time information to network devices, which will make log timestamps inaccurate and affect scheduled actions.
    SV-105607r1_rule CISC-ND-001160 CCI-000366 MEDIUM The Cisco router must dynamically manage identifiers. Dynamic identifier management prevents disruption of operations by minimizing the need for system restarts. Dynamic establishment of new identifiers will occur while the system is operational. New identifiers or changes to existing identifiers must take e
    SV-105609r1_rule CISC-ND-001170 CCI-002041 MEDIUM The Cisco router must allow the use of a temporary password for system logons with an immediate change to a permanent password. Without providing this capability, an account may be created without a password. Non-repudiation cannot be guaranteed once an account is created if a user is not forced to change the temporary password upon initial login. Temporary passwords are typicall
    SV-105611r1_rule CISC-ND-001200 CCI-002890 HIGH The Cisco router must be configured to use FIPS-validated Keyed-Hash Message Authentication Code (HMAC) to protect the integrity of remote maintenance sessions. Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised. Nonlocal maintenance and diagnostic activiti
    SV-105613r1_rule CISC-ND-001210 CCI-003123 HIGH The Cisco router must be configured to implement cryptographic mechanisms to protect the confidentiality of remote maintenance sessions. This requires the use of secure protocols instead of their unsecured counterparts, such as SSH instead of telnet, SCP instead of FTP, and HTTPS instead of HTTP. If unsecured protocols (lacking cryptographic mechanisms) are used for sessions, the contents
    SV-105615r1_rule CISC-ND-001310 CCI-001851 MEDIUM The Cisco router must be configured to off-load log records onto a different system than the system being audited. Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity.
    SV-105617r1_rule CISC-ND-001330 CCI-000366 MEDIUM The Cisco router must notify the administrator of the number of successful logon attempts occurring during an organization-defined time period. Administrators need to be aware of activity that occurs regarding their network device management account. Providing administrators with information regarding the date and time of their last successful login allows the administrator to determine if any un
    SV-105619r1_rule CISC-ND-001340 CCI-000366 MEDIUM The Cisco router must use automated mechanisms to alert security personnel to threats identified by authoritative sources (e.g., CTOs) and in accordance with CJCSM 6510.01B. By immediately displaying an alarm message, potential security violations can be identified more quickly even when administrators are not logged into the network device.
    SV-105621r1_rule CISC-ND-001370 CCI-000366 HIGH The Cisco router must be configured to use an authentication server for the purpose of authenticating users prior to granting administrative access. Centralized management of user accounts and authentication increases the administrative access to the router. This control is particularly important protection against the insider threat. With robust centralized management, audit records for administrator
    SV-105623r1_rule CISC-ND-001380 CCI-000366 MEDIUM The Cisco router must employ automated mechanisms to centrally apply authentication settings. The use of authentication servers or other centralized management servers for providing centralized authentication services is required for network device management. Maintaining local administrator accounts for daily usage on each network device without
    SV-105625r1_rule CISC-ND-001390 CCI-000366 MEDIUM The Cisco router must employ automated mechanisms to centrally verify authentication settings. The use of authentication servers or other centralized management servers for providing centralized authentication services is required for network device management. Maintaining local administrator accounts for daily usage on each network device without
    SV-105627r1_rule CISC-ND-001400 CCI-000366 MEDIUM The Cisco router must employ automated mechanisms to detect the addition of unauthorized components or devices. This requirement addresses configuration management of the network device. The network device must automatically detect the installation of unauthorized software or hardware onto the device itself. Monitoring may be accomplished on an ongoing basis or by
    SV-105629r2_rule CISC-ND-001410 CCI-000366 MEDIUM The Cisco router must be configured to back up the configuration when changes occur. System-level information includes default and customized settings and security attributes, including ACLs that relate to the network device configuration, as well as software required for the execution and operation of the device. Information system backu
    SV-105631r1_rule CISC-ND-001430 CCI-000366 MEDIUM The Cisco router must employ automated mechanisms to assist in the tracking of security incidents. Despite the investment in perimeter defense technologies, enclaves are still faced with detecting, analyzing, and remediating network breaches and exploits that have made it past the network device. An automated incident response infrastructure allows net
    SV-105633r1_rule CISC-ND-001440 CCI-000366 MEDIUM The Cisco router must be configured to obtain its public key certificates from an appropriate certificate policy through an approved service provider. For user certificates, each organization obtains certificates from an approved, shared service provider, as required by OMB policy. For federal agencies operating a legacy public key infrastructure cross-certified with the Federal Bridge Certification Aut
    SV-105635r1_rule CISC-ND-001450 CCI-000366 MEDIUM The Cisco router must be configured to send log data to a syslog server for the purpose of forwarding alerts to the administrators and the ISSO. The aggregation of log data kept on a syslog server can be used to detect attacks and trigger an alert to the appropriate security personnel. The stored log data can used to detect weaknesses in security that enable the network IA team to find and address
    SV-105637r1_rule CISC-ND-001460 CCI-000366 MEDIUM The Cisco router must be configured to send SNMP traps and notifications to the SNMP manager for the purpose of sending alarms and notifying appropriate personnel as required by specific events. If appropriate actions are not taken when a network device failure occurs, a denial of service condition may occur which could result in mission failure since the network would be operating without a critical security monitoring and prevention function. U
    SV-105639r1_rule CISC-ND-001470 CCI-000366 HIGH The Cisco router must be running an IOS release that is currently supported by Cisco Systems. Network devices running an unsupported operating system lack current security fixes required to mitigate the risks associated with recent vulnerabilities. Running a supported release also enables operations to maintain a stable and reliable network provid