| V-239931 | High | The Cisco ASA must be configured to implement cryptographic mechanisms using a FIPS 140-2 approved algorithm 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... |
| V-239930 | High | The Cisco ASA must be configured to use FIPS-validated Keyed-Hash Message Authentication Code (HMAC) to protect the integrity of non-local maintenance and diagnostic communications. | 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... |
| V-239911 | High | The Cisco ASA must be configured to prohibit the use of all unnecessary and/or non-secure functions, ports, protocols, and/or services. | In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must... |
| V-239944 | High | The Cisco ASA must be running an operating system 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. |
| V-239940 | High | The Cisco ASA must be configured to use at least two authentication servers to authenticate users prior to granting administrative access. | Centralized management of authentication settings increases the security of remote and non-local access methods. This control is particularly important protection against the insider threat. With... |
| V-239943 | High | The Cisco ASA must be configured to send log data to at least two central log servers for the purpose of forwarding alerts to organization-defined personnel and/or the firewall administrator. | 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... |
| V-239920 | High | The Cisco ASA must be configured to terminate all network connections associated with a device management session at the end of the session, or the session must be terminated after five minutes of inactivity except to fulfill documented and validated mission requirements. | 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... |
| V-239929 | Medium | The Cisco ASA must be configured to authenticate Network Time Protocol 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... |
| V-239903 | Medium | The Cisco ASA must be configured to protect against an individual (or process acting on behalf of 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... |
| V-239904 | Medium | The Cisco ASA must be configured to generate audit records when successful/unsuccessful attempts to 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... |
| V-239905 | Medium | The Cisco ASA must be configured to produce audit log records containing sufficient information to establish what type of event 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.... |
| V-239896 | Medium | The Cisco ASA 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... |
| V-239897 | Medium | The Cisco ASA 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.... |
| V-239906 | Medium | The Cisco ASA must be configured to 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.... |
| V-239907 | Medium | The Cisco ASA must be configured to 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... |
| V-239898 | Medium | The Cisco ASA 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... |
| V-239899 | Medium | The Cisco ASA 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... |
| V-239919 | Medium | The Cisco ASA 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... |
| V-239918 | Medium | The Cisco ASA 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... |
| V-239935 | Medium | The Cisco ASA 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... |
| V-239934 | Medium | The Cisco ASA must be configured to generate audit records when successful/unsuccessful attempts to delete administrator 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... |
| V-239937 | Medium | The Cisco ASA must be configured to 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... |
| V-239936 | Medium | The Cisco ASA must be configured to generate audit records for privileged activities or other system-level access. | 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... |
| V-239913 | Medium | The Cisco ASA 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... |
| V-239912 | Medium | The Cisco ASA 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... |
| V-239910 | Medium | The Cisco ASA 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... |
| V-239917 | Medium | The Cisco ASA 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... |
| V-239916 | Medium | The Cisco ASA must be configured to enforce password complexity by requiring that at least one lowercase 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... |
| V-239915 | Medium | The Cisco ASA must be configured to enforce password complexity by requiring that at least one uppercase 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... |
| V-239914 | Medium | The Cisco ASA 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 factor of several that helps to... |
| V-239908 | Medium | The Cisco ASA must be configured to produce audit log records containing information to establish the source of events. | In order to compile an accurate risk assessment and provide forensic analysis, it is essential for security personnel to know the source of the event. The source may be a component, module, or... |
| V-239933 | Medium | The Cisco ASA must be configured to generate audit records when successful/unsuccessful attempts to modify administrator 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... |
| V-239927 | Medium | The Cisco ASA must be configured to authenticate Simple Network Management Protocol (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... |
| V-239932 | Medium | The Cisco ASA must be configured to protect against known types of Denial of Service (DoS) attacks by enabling the
Threat Detection feature. | 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... |
| V-239909 | Medium | The Cisco ASA must be configured to produce audit records that contain information to establish the outcome of the event. | Without information about the outcome of events, security personnel cannot make an accurate assessment as to whether an attack was successful or if changes were made to the security state of the... |
| V-239941 | Medium | The Cisco ASA must be configured to conduct backups of system-level information contained in the information system 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... |
| V-239928 | Medium | The Cisco ASA must be configured to encrypt Simple Network Management Protocol (SNMP) messages using a FIPS 140-2 approved algorithm. | Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Bidirectional authentication provides stronger safeguards to validate... |
| V-239900 | Medium | The Cisco ASA 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... |
| V-239901 | Medium | The Cisco ASA must be configured to enforce approved authorizations for controlling the flow of management information within the Cisco ASA based on information flow 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... |
| V-239902 | Medium | The Cisco ASA 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,... |
| V-239925 | Medium | The Cisco ASA must be configured to 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.... |
| V-239922 | Medium | The Cisco ASA 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... |
| V-239923 | Medium | The Cisco ASA must be configured to generate an immediate real-time alert of all audit failure events requiring real-time alerts. | 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... |
| V-239921 | Medium | The Cisco ASA 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... |
| V-239939 | Medium | The Cisco ASA must be configured to offload audit records onto a different system or media than the system being audited. | Information stored in one location is vulnerable to accidental or incidental deletion or alteration.
Offloading is a common process in information systems with limited audit storage capacity. |
| V-239942 | Medium | The Cisco ASA 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... |
| V-239938 | Medium | The Cisco ASA must be configured to generate audit 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... |
| V-239924 | Medium | The Cisco ASA 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... |
