Domain Name System (DNS) Security Requirements Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The DNS implementation must protect the authenticity of communications sessions for queries.
The underlying feature in the major threat associated with DNS query/response (i.e., forged response or response failure) is the integrity of DNS data returned in the response. An integral part of ...Rule Medium Severity -
The DNS server implementation must fail to a secure state if system initialization fails, shutdown fails, or aborts fail.
Failure to a known safe state helps prevent systems from failing to a state that may cause loss of data or unauthorized access to system resources. Applications or systems that fail suddenly and wi...Rule Medium Severity -
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.
Failure to a known state can address safety or security in accordance with the mission/business needs of the organization. Failure to a known secure state helps prevent a loss of confidentiality, i...Rule Medium Severity -
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.
Information at rest refers to the state of information when it is located on a secondary storage device within an organizational information system. Mobile devices, laptops, desktops, and storage d...Rule Medium Severity -
The DNS server implementation must prevent unauthorized and unintended information transfer via shared system resources.
Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of ...Rule Medium Severity -
The DNS server implementation must restrict the ability of individuals to use the DNS server to launch Denial of Service (DoS) attacks against other information systems.
A DoS is a condition where a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. Individua...Rule Medium Severity -
The DNS server implementation must manage excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of Denial of Service (DoS) attacks.
A DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. In the ca...Rule Medium Severity -
The DNS server implementation must check the validity of all data inputs except those specifically identified by the organization.
Invalid user input occurs when a user inserts data or characters into an application's data entry fields and the application is unprepared to process that data. This results in unanticipated applic...Rule Medium Severity -
The DNS server implementation must, when a component failure is detected, activate a notification to the system administrator.
Predictable failure prevention requires organizational planning to address system failure issues. If components key to maintaining systems security fail to function, the system could continue opera...Rule Medium Severity -
The DNS server implementation must be configured to generate audit records for failed security verification tests so that the ISSO and ISSM can be notified of the failures.
Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data ...Rule Medium Severity
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