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Domain Name System (DNS) Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The DNS server implementation must prevent the installation of organization-defined software and firmware components without verification that the component has been digitally signed using a certificate that is recognized and approved by the organization.

    <VulnDiscussion>Software and firmware components prevented from installation unless signed with recognized and approved certificates include ...
    Rule Medium Severity
    Show

  • SRG-APP-000815

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must require users to be individually authenticated before granting access to the shared accounts or resources.

    &lt;VulnDiscussion&gt;Individual authentication prior to shared group authentication mitigates the risk of using group accounts or authenticators.&...
    Rule Medium Severity
    Show

  • SRG-APP-000820

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must implement multifactor authentication for local; network; and/or remote access to privileged accounts; and/or nonprivileged accounts such that one of the factors is provided by a device separate from the system gaining access.

    &lt;VulnDiscussion&gt;The purpose of requiring a device that is separate from the system to which the user is attempting to gain access for one of ...
    Rule Medium Severity
    Show

  • SRG-APP-000825

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must provide protected storage for cryptographic keys with organization-defined safeguards and/or hardware protected key store.

    &lt;VulnDiscussion&gt;A Trusted Platform Module (TPM) is an example of a hardware-protected data store that can be used to protect cryptographic ke...
    Rule Medium Severity
    Show

  • SRG-APP-000920

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must implement multifactor authentication for local; network; and/or remote access to privileged accounts; and/or nonprivileged accounts such that the device meets organization-defined strength of mechanism requirements.

    &lt;VulnDiscussion&gt;The purpose of requiring a device that is separate from the system to which the user is attempting to gain access for one of ...
    Rule Medium Severity
    Show

  • SRG-APP-000830

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, maintain a list of commonly used, expected, or compromised passwords on an organization-defined frequency.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000835

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, update the list of passwords on an organization-defined frequency.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000840

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, update the list of passwords when organizational passwords are suspected to have been compromised directly or indirectly.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000845

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, verify when users create or update passwords, that the passwords are not found on the list of commonly-used, expected, or compromised passwords in IA-5 (1) (a).

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000850

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, store passwords using an approved salted key derivation function, preferably using a keyed hash.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000855

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, require immediate selection of a new password upon account recovery.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000860

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, allow user selection of long passwords and passphrases, including spaces and all printable characters.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000865

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, employ automated tools to assist the user in selecting strong password authenticators.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000870

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for password-based authentication, enforce organization-defined composition and complexity rules.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
    Show

  • SRG-APP-000875

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must, for public key-based authentication, implement a local cache of revocation data to support path discovery and validation.

    &lt;VulnDiscussion&gt;Public key cryptography is a valid authentication mechanism for individuals, machines, and devices. For PKI solutions, status...
    Rule Medium Severity
    Show

  • SRG-APP-000880

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must protect nonlocal maintenance sessions by separating the maintenance session from other network sessions with the system by logically separated communications paths.

    &lt;VulnDiscussion&gt;Nonlocal maintenance and diagnostic activities are conducted by individuals who communicate through either an external or int...
    Rule Medium Severity
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  • SRG-APP-000910

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must include only approved trust anchors in trust stores or certificate stores managed by the organization.

    &lt;VulnDiscussion&gt;Public key infrastructure (PKI) certificates are certificates with visibility external to organizational systems and certific...
    Rule Medium Severity
    Show

  • The DNS server implementation must synchronize system clocks within and between systems or system components.

    &lt;VulnDiscussion&gt;Time synchronization of system clocks is essential for the correct execution of many system services, including identificatio...
    Rule Medium Severity
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  • SRG-APP-000925

    <GroupDescription></GroupDescription>
    Group
    Show

  • The DNS server implementation must compare the internal system clocks on an organization-defined frequency with organization-defined authoritative time source.

    &lt;VulnDiscussion&gt;Synchronization of internal system clocks with an authoritative source provides uniformity of time stamps for systems with mu...
    Rule Medium Severity
    Show

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