II - Mission Support Public
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000214
<GroupDescription></GroupDescription>Group -
The validity period for the RRSIGs covering the DS RR for a zones delegated children 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-000215
<GroupDescription></GroupDescription>Group -
The DNS server implementation must enforce approved authorizations for controlling the flow of information between DNS servers and between DNS servers and DNS clients based on DNSSEC policies.
<VulnDiscussion>A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design...Rule Medium Severity -
SRG-APP-000215
<GroupDescription></GroupDescription>Group -
A DNS server implementation must provide the means to enable verification of a chain of trust among parent and child domains (if the child supports secure resolution services).
<VulnDiscussion>If name server replies are invalid or cannot be validated, many networking functions and communication would be adversely aff...Rule Medium Severity -
SRG-APP-000219
<GroupDescription></GroupDescription>Group -
The DNS implementation must protect the authenticity of communications sessions for zone transfers.
<VulnDiscussion>DNS is a fundamental network service that is prone to various attacks, such as cache poisoning and man-in-the middle attacks....Rule Medium Severity -
SRG-APP-000219
<GroupDescription></GroupDescription>Group -
The DNS implementation must protect the authenticity of communications sessions for dynamic updates.
<VulnDiscussion>DNS is a fundamental network service that is prone to various attacks, such as cache poisoning and man-in-the middle attacks....Rule Medium Severity -
SRG-APP-000219
<GroupDescription></GroupDescription>Group -
The DNS implementation must protect the authenticity of communications sessions for queries.
<VulnDiscussion>The underlying feature in the major threat associated with DNS query/response (i.e., forged response or response failure) is ...Rule Medium Severity -
SRG-APP-000225
<GroupDescription></GroupDescription>Group -
The DNS server implementation must fail to a secure state if system initialization fails, shutdown fails, or aborts fail.
<VulnDiscussion>Failure to a known safe state helps prevent systems from failing to a state that may cause loss of data or unauthorized acces...Rule Medium Severity -
SRG-APP-000226
<GroupDescription></GroupDescription>Group -
In the event of a system failure, the DNS server implementation must preserve any information necessary to determine cause of failure and any information necessary to return to operations with least disruption to mission processes.
<VulnDiscussion>Failure to a known state can address safety or security in accordance with the mission/business needs of the organization. Fa...Rule Medium Severity -
SRG-APP-000231
<GroupDescription></GroupDescription>Group -
The DNS server implementation must protect the confidentiality and integrity of secret/private cryptographic keys at rest and the integrity of DNS information at rest.
<VulnDiscussion>Information at rest refers to the state of information when it is located on a secondary storage device within an organizatio...Rule Medium Severity -
SRG-APP-000243
<GroupDescription></GroupDescription>Group -
The DNS server implementation must prevent unauthorized and unintended information transfer via shared system resources.
<VulnDiscussion>Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of infor...Rule Medium Severity
Node 2
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