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Microsoft Windows 2012 Server Domain Name System Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-APP-000383-DNS-000047

    <GroupDescription></GroupDescription>
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  • Forwarders on an authoritative Windows 2012 DNS Server, if enabled for external resolution, must only forward to either an internal, non-AD-integrated DNS server or to the DoD Enterprise Recursive Services (ERS).

    &lt;VulnDiscussion&gt;A potential vulnerability of DNS is that an attacker can poison a name server's cache by sending queries that will cause the ...
    Rule Medium Severity
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  • SRG-APP-000383-DNS-000047

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  • The Windows 2012 DNS Server with a caching name server role must restrict recursive query responses to only the IP addresses and IP address ranges of known supported clients.

    &lt;VulnDiscussion&gt;A potential vulnerability of DNS is that an attacker can poison a name server's cache by sending queries that will cause the ...
    Rule Medium Severity
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  • SRG-APP-000383-DNS-000047

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  • The Windows 2012 DNS Server with a caching name server role must be secured against pollution by ensuring the authenticity and integrity of queried records.

    &lt;VulnDiscussion&gt;A potential vulnerability of DNS is that an attacker can poison a name server's cache by sending queries that will cause the ...
    Rule Medium Severity
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  • SRG-APP-000440-DNS-000065

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  • The Windows 2012 DNS Server must implement cryptographic mechanisms to detect changes to information during transmission unless otherwise protected by alternative physical safeguards, such as, at a minimum, a Protected Distribution System (PDS).

    &lt;VulnDiscussion&gt;Encrypting information for transmission protects information from unauthorized disclosure and modification. Cryptographic mec...
    Rule Medium Severity
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  • SRG-APP-000516-DNS-000078

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  • The validity period for the RRSIGs covering a zones DNSKEY RRSet must be no less than two days and no more than one week.

    &lt;VulnDiscussion&gt;The best way for a zone administrator to minimize the impact of a key compromise is by limiting the validity period of RRSIGs...
    Rule Medium Severity
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  • SRG-APP-000516-DNS-000084

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  • NSEC3 must be used for all internal DNS zones.

    &lt;VulnDiscussion&gt;NSEC records list the resource record types for the name, as well as the name of the next resource record. With this informat...
    Rule Medium Severity
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  • SRG-APP-000516-DNS-000085

    <GroupDescription></GroupDescription>
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  • The Windows 2012 DNS Servers zone files must have NS records that point to active name servers authoritative for the domain specified in that record.

    &lt;VulnDiscussion&gt;Poorly constructed NS records pose a security risk because they create conditions under which an adversary might be able to p...
    Rule High Severity
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  • SRG-APP-000516-DNS-000087

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  • All authoritative name servers for a zone must be located on different network segments.

    &lt;VulnDiscussion&gt;Most enterprises have an authoritative primary server and a host of authoritative secondary name servers. It is essential tha...
    Rule Medium Severity
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  • SRG-APP-000516-DNS-000088

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  • All authoritative name servers for a zone must have the same version of zone information.

    &lt;VulnDiscussion&gt;The only protection approach for content control of a DNS zone file is the use of a zone file integrity checker. The effectiv...
    Rule Medium Severity
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  • SRG-APP-000516-DNS-000089

    <GroupDescription></GroupDescription>
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  • The Windows 2012 DNS Server must be configured to enable DNSSEC Resource Records.

    &lt;VulnDiscussion&gt;The specification for a digital signature mechanism in the context of the DNS infrastructure is in IETF's DNSSEC standard. I...
    Rule High Severity
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