Cisco IOS 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: V1R4

Published: 2020-06-04

Updated At: 2020-08-15 20:21:58

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    Vuln Rule Version CCI Severity Title Description Status Finding Details Comments
    SV-105145r1_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-105153r1_rule CISC-ND-000090 CCI-000018 MEDIUM The Cisco router must be configured to automatically audit account creation. Upon gaining access to a network device, an attacker will often first attempt to create a persistent method of reestablishing access. One way to accomplish this is to create a new account. Notification of account creation helps to mitigate this risk. Audi
    SV-105155r1_rule CISC-ND-000100 CCI-001403 MEDIUM The Cisco router must be configured to automatically audit account modification. Since the accounts in the network device are privileged or system-level accounts, account management is vital to the security of the network device. Account management by a designated authority ensures access to the network device is being controlled in a
    SV-105157r1_rule CISC-ND-000110 CCI-001404 MEDIUM The Cisco router must be configured to automatically audit account disabling actions. Account management, as a whole, ensures access to the network device is being controlled in a secure manner by granting access to only authorized personnel. Auditing account disabling actions will support account management procedures. When device managem
    SV-105159r1_rule CISC-ND-000120 CCI-001405 MEDIUM The Cisco router must be configured to automatically audit account removal actions. Account management, as a whole, ensures access to the network device is being controlled in a secure manner by granting access to only authorized personnel. Auditing account removal actions will support account management procedures. When device managemen
    SV-105161r1_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-105163r1_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 it must lock out the user account from accessing the device for 15 minutes. By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced.
    SV-105165r1_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-105173r1_rule CISC-ND-000210 CCI-000166 MEDIUM The Cisco router must be configured to protect against an individual falsely denying having performed organization-defined actions to be covered by non-repudiation. This requirement supports non-repudiation of actions taken by an administrator and is required in order to maintain the integrity of the configuration management process. All configuration changes to the network device are logged, and administrators authe
    SV-105177r1_rule CISC-ND-000250 CCI-000172 MEDIUM The Cisco router must be configured to generate audit records when successful/unsuccessful attempts to log on 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-105179r1_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-105181r1_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-105183r1_rule CISC-ND-000330 CCI-000135 MEDIUM The Cisco router must be configured to generate audit records containing the full-text recording of privileged commands. Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information. Organizations consider limiting the additional audit information to only that information explicitly needed for specific audit requ
    SV-105187r1_rule CISC-ND-000380 CCI-000163 MEDIUM The Cisco router must be configured to protect audit information from unauthorized modification. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit network device activity. If audit data were to become compromised, then forensic analysis and discovery of the true source of
    SV-105189r1_rule CISC-ND-000390 CCI-000164 MEDIUM The Cisco router must be configured to protect audit information from unauthorized deletion. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity. If audit data were to become compromised, then forensic analysis and discovery of the true sourc
    SV-105193r1_rule CISC-ND-000460 CCI-001499 MEDIUM The Cisco router must be configured to limit privileges to change the software resident within software libraries. Changes to any software components of the network device can have significant effects on the overall security of the network. Therefore, only qualified and authorized individuals should be allowed administrative access to the network device for implementi
    SV-105195r1_rule CISC-ND-000470 CCI-000382 HIGH The Cisco router must 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-105199r2_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-105205r1_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-105209r1_rule CISC-ND-000550 CCI-000205 MEDIUM The Cisco router must be configured to enforce a minimum 15-character password length. Password complexity or strength is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one of several that helps to determine strength and how long it takes to crack a password. The s
    SV-105211r1_rule CISC-ND-000570 CCI-000192 MEDIUM The Cisco router must be configured to enforce password complexity by requiring that at least one upper-case character be used. Use of a complex passwords helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password
    SV-105213r1_rule CISC-ND-000580 CCI-000193 MEDIUM The Cisco router must be configured to enforce password complexity by requiring that at least one lower-case character be used. Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password
    SV-105215r1_rule CISC-ND-000590 CCI-000194 MEDIUM The Cisco router must be configured to enforce password complexity by requiring that at least one numeric character be used. Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password
    SV-105217r1_rule CISC-ND-000600 CCI-001619 MEDIUM The Cisco router must be configured to enforce password complexity by requiring that at least one special character be used. Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password
    SV-105219r1_rule CISC-ND-000610 CCI-000195 MEDIUM The Cisco router must be configured to require that when a password is changed, the characters are changed in at least eight of the positions within the password. If the application allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number of changed c
    SV-105221r1_rule CISC-ND-000620 CCI-000196 HIGH The Cisco router must only store cryptographic representations of passwords. Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised. Network devices must enforce cryptographic re
    SV-105227r1_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-105241r1_rule CISC-ND-000880 CCI-002130 MEDIUM The Cisco router must be configured to automatically audit account enabling actions. 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-105247r1_rule CISC-ND-000940 CCI-002234 MEDIUM The Cisco router must be configured to audit the execution of privileged functions. Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts
    SV-105253r1_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-105257r1_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-105259r1_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-105261r1_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-105263r1_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-105273r1_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-105275r1_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-105277r1_rule CISC-ND-001150 CCI-001967 MEDIUM The Cisco router must be configured to authenticate Network Time Protocol (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-105283r1_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-105285r1_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-105287r1_rule CISC-ND-001220 CCI-002385 MEDIUM The Cisco router must be configured to protect against known types of denial-of-service (DoS) attacks by employing organization-defined security safeguards. DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. This requirement addresses the configuration of network devices to mit
    SV-105289r1_rule CISC-ND-001240 CCI-000172 MEDIUM The Cisco router must be configured to generate log records when administrator privileges are modified. 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 recor
    SV-105291r1_rule CISC-ND-001250 CCI-000172 MEDIUM The Cisco router must be configured to generate log records when administrator privileges are deleted. 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 recor
    SV-105293r1_rule CISC-ND-001260 CCI-000172 MEDIUM The Cisco router must be configured to generate audit records when successful/unsuccessful logon attempts 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 recor
    SV-105295r1_rule CISC-ND-001270 CCI-000172 MEDIUM The Cisco router must be configured to generate log records for privileged activities. 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 recor
    SV-105297r1_rule CISC-ND-001280 CCI-000172 MEDIUM The Cisco router must generate audit records showing starting and ending time for administrator access to the system. 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-105299r1_rule CISC-ND-001290 CCI-000172 MEDIUM The Cisco router must be configured to generate log records when concurrent logons from different workstations 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 recor
    SV-105301r1_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-105307r1_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-105315r2_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-105319r2_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-105321r3_rule CISC-ND-001450 CCI-000366 HIGH 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-105325r2_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