III - Administrative Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000383-DNS-000047
<GroupDescription></GroupDescription>Group -
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).
<VulnDiscussion>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 -
SRG-APP-000383-DNS-000047
<GroupDescription></GroupDescription>Group -
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.
<VulnDiscussion>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 -
SRG-APP-000383-DNS-000047
<GroupDescription></GroupDescription>Group -
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.
<VulnDiscussion>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 -
SRG-APP-000440-DNS-000065
<GroupDescription></GroupDescription>Group -
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).
<VulnDiscussion>Encrypting information for transmission protects information from unauthorized disclosure and modification. Cryptographic mec...Rule Medium Severity -
SRG-APP-000516-DNS-000078
<GroupDescription></GroupDescription>Group -
The validity period for the RRSIGs covering a zones DNSKEY RRSet must be no less than two days and no more than one week.
<VulnDiscussion>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 -
SRG-APP-000516-DNS-000084
<GroupDescription></GroupDescription>Group -
NSEC3 must be used for all internal DNS zones.
<VulnDiscussion>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 -
SRG-APP-000516-DNS-000085
<GroupDescription></GroupDescription>Group -
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.
<VulnDiscussion>Poorly constructed NS records pose a security risk because they create conditions under which an adversary might be able to p...Rule High Severity -
SRG-APP-000516-DNS-000087
<GroupDescription></GroupDescription>Group -
All authoritative name servers for a zone must be located on different network segments.
<VulnDiscussion>Most enterprises have an authoritative primary server and a host of authoritative secondary name servers. It is essential tha...Rule Medium Severity -
SRG-APP-000516-DNS-000088
<GroupDescription></GroupDescription>Group -
All authoritative name servers for a zone must have the same version of zone information.
<VulnDiscussion>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 -
SRG-APP-000516-DNS-000089
<GroupDescription></GroupDescription>Group -
The Windows 2012 DNS Server must be configured to enable DNSSEC Resource Records.
<VulnDiscussion>The specification for a digital signature mechanism in the context of the DNS infrastructure is in IETF's DNSSEC standard. I...Rule High Severity
Node 2
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