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III - Administrative Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000078-VPN-000290

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to generate log records containing information to establish when the events occurred.

    &lt;VulnDiscussion&gt;Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to...
    Rule Low Severity
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  • SRG-NET-000336-VPN-001280

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco ASA must be configured to queue log records locally in the event that the central audit server is down or not reachable.

    &lt;VulnDiscussion&gt;If the system were to continue processing after audit failure, actions can be taken on the system that cannot be tracked and ...
    Rule Medium Severity
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  • SRG-NET-000335-VPN-001270

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to generate an alert that can be forwarded as an alert to organization-defined personnel and/or firewall administrator of all log failure events.

    &lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....
    Rule Medium Severity
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  • SRG-NET-000164-VPN-000560

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to validate certificates via a trustpoint that identifies a DoD or DoD-approved certificate authority.

    &lt;VulnDiscussion&gt;Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate n...
    Rule Medium Severity
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  • SRG-NET-000512-VPN-002220

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to use Internet Key Exchange (IKE) for all IPsec security associations.

    &lt;VulnDiscussion&gt;Without IKE, the Security Parameter Index (SPI) is manually specified for each security association. IKE peers will negotiate...
    Rule High Severity
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  • SRG-NET-000132-VPN-000460

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to use Internet Key Exchange v2 (IKEv2) for all IPsec security associations.

    &lt;VulnDiscussion&gt;In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e....
    Rule Medium Severity
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  • SRG-NET-000510-VPN-002180

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to use NIST FIPS-validated cryptography for Internet Key Exchange (IKE) Phase 1.

    &lt;VulnDiscussion&gt;Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The VPN gatewa...
    Rule Medium Severity
    Show

  • SRG-NET-000371-VPN-001640

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco ASA must be configured to specify Perfect Forward Secrecy (PFS) for the IPsec Security Association (SA) during IKE Phase 2 negotiation.

    &lt;VulnDiscussion&gt;PFS generates each new encryption key independently from the previous key. Without PFS, compromise of one key will compromise...
    Rule Medium Severity
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  • SRG-NET-000510-VPN-002160

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to use a FIPS-validated cryptographic module to generate cryptographic hashes.

    &lt;VulnDiscussion&gt;FIPS 140-2/140-3 precludes the use of invalidated cryptography for the cryptographic protection of sensitive or valuable data...
    Rule Medium Severity
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  • SRG-NET-000510-VPN-002170

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco ASA must be configured to use a FIPS-validated cryptographic module to implement IPsec encryption services.

    &lt;VulnDiscussion&gt;FIPS 140-2/140-3 precludes the use of invalidated cryptography for the cryptographic protection of sensitive or valuable data...
    Rule Medium Severity
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  • SRG-NET-000074-VPN-000250

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco ASA must be configured to use a Diffie-Hellman (DH) Group of 16 or greater for Internet Key Exchange (IKE) Phase 1.

    &lt;VulnDiscussion&gt;Use of an approved DH algorithm ensures the IKE (Phase 1) proposal uses FIPS-validated key management techniques and processe...
    Rule High Severity
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  • SRG-NET-000168-VPN-000600

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to use FIPS-validated SHA-2 at 384 bits or higher for Internet Key Exchange (IKE) Phase 1.

    &lt;VulnDiscussion&gt;Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Although al...
    Rule Medium Severity
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  • SRG-NET-000230-VPN-000780

    <GroupDescription></GroupDescription>
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  • The Cisco ASA must be configured to use FIPS-validated SHA-2 or higher for Internet Key Exchange (IKE) Phase 2.

    &lt;VulnDiscussion&gt;Authenticity protection provides protection against man-in-the-middle attacks/session hijacking and the insertion of false in...
    Rule High Severity
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  • SRG-NET-000019-VPN-000040

    <GroupDescription></GroupDescription>
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  • The Cisco ASA VPN gateway must be configured to restrict what traffic is transported via the IPsec tunnel according to flow control policies.

    &lt;VulnDiscussion&gt;Unrestricted traffic may contain malicious traffic which poses a threat to an enclave or to other connected networks. Additio...
    Rule Medium Severity
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  • SRG-NET-000148-VPN-000540

    <GroupDescription></GroupDescription>
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  • The Cisco ASA VPN gateway must be configured to identify all peers before establishing a connection.

    &lt;VulnDiscussion&gt;Without identifying devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. For...
    Rule Medium Severity
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  • SRG-NET-000565-VPN-002400

    <GroupDescription></GroupDescription>
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  • The Cisco ASA VPN gateway must use cryptographic algorithms approved by NSA to protect NSS when transporting classified traffic across an unclassified network.

    &lt;VulnDiscussion&gt;Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The VPN gatewa...
    Rule High Severity
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  • SRG-NET-000337-VPN-001290

    <GroupDescription></GroupDescription>
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  • The Cisco ASA VPN gateway must be configured to renegotiate the IPsec Security Association after eight hours or less.

    &lt;VulnDiscussion&gt;The IPsec security association (SA) and its corresponding key will expire either after the number of seconds or amount of tra...
    Rule Medium Severity
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  • SRG-NET-000337-VPN-001300

    <GroupDescription></GroupDescription>
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  • The Cisco ASA VPN gateway must be configured to renegotiate the IKE security association after 24 hours or less.

    &lt;VulnDiscussion&gt;When a VPN gateway creates an IPsec security association (SA), resources must be allocated to maintain the SA. These resource...
    Rule Medium Severity
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  • SRG-NET-000166-VPN-000580

    <GroupDescription></GroupDescription>
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  • The Cisco ASA remote access VPN server must be configured to use a separate authentication server than that used for administrative access.

    &lt;VulnDiscussion&gt;The VPN interacts directly with public networks and devices and should not contain user authentication information for all us...
    Rule Medium Severity
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  • SRG-NET-000320-VPN-001120

    <GroupDescription></GroupDescription>
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  • The Cisco ASA remote access VPN server must be configured to use LDAP over SSL to determine authorization for granting access to the network.

    &lt;VulnDiscussion&gt;Protecting authentication communications between the client, the VPN Gateway, and the authentication server keeps this critic...
    Rule Medium Severity
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  • SRG-NET-000138-VPN-000490

    <GroupDescription></GroupDescription>
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  • The Cisco ASA remote access VPN server must be configured to identify and authenticate users before granting access to the network.

    &lt;VulnDiscussion&gt;To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to pre...
    Rule Medium Severity
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  • SRG-NET-000140-VPN-000500

    <GroupDescription></GroupDescription>
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  • The Cisco ASA remote access VPN server must be configured to enforce certificate-based authentication before granting access to the network.

    &lt;VulnDiscussion&gt;To assure accountability and prevent unauthenticated access, non-privileged users must utilize multifactor authentication to ...
    Rule High Severity
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  • SRG-NET-000166-VPN-000590

    <GroupDescription></GroupDescription>
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  • The Cisco ASA remote access VPN server must be configured to map the distinguished name (DN) from the client’s certificate to entries in the authentication server to determine authorization to access the network.

    &lt;VulnDiscussion&gt;Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the indivi...
    Rule Medium Severity
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  • SRG-NET-000041-VPN-000110

    <GroupDescription></GroupDescription>
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  • The Cisco ASA remote access VPN server must be configured to display the Standard Mandatory DoD Notice and Consent Banner before granting access to the network.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the network ensures privacy and security no...
    Rule Medium Severity
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  • SRG-NET-000079-VPN-000300

    <GroupDescription></GroupDescription>
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  • The Cisco ASA remote access VPN server must be configured to generate log records containing information that establishes the identity of any individual or process associated with the event.

    &lt;VulnDiscussion&gt;Without information that establishes the identity of the subjects (i.e., users or processes acting on behalf of users) associ...
    Rule Medium Severity
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