A DNS server implementation must provide additional integrity artifacts along with the authoritative name resolution data the system returns in response to external name/address resolution queries.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-214190	IDNS-7X-000510	SV-214190r612370_rule		Medium

Description
The major threat associated with DNS forged responses or failures is the integrity of the DNS data returned in the response. The principle of DNSSEC is to mitigate this threat by providing data origin authentication, establishing trust in the source. This requirement enables remote clients to obtain origin authentication and integrity verification assurances for the host/service name to network address resolution information obtained through the service. A DNS server is an example of an information system providing name/address resolution service. Digital signatures and cryptographic keys are examples of additional artifacts. DNS resource records are examples of authoritative data. Applications other than the DNS to map between host/service names and network addresses must provide other means to assure the authenticity and integrity of response data. In the case of DNS, employ DNSSEC to provide an additional data origin and integrity artifacts along with the authoritative data the system returns in response to DNS name/address resolution queries.

Description

The major threat associated with DNS forged responses or failures is the integrity of the DNS data returned in the response. The principle of DNSSEC is to mitigate this threat by providing data origin authentication, establishing trust in the source. This requirement enables remote clients to obtain origin authentication and integrity verification assurances for the host/service name to network address resolution information obtained through the service. A DNS server is an example of an information system providing name/address resolution service. Digital signatures and cryptographic keys are examples of additional artifacts. DNS resource records are examples of authoritative data. Applications other than the DNS to map between host/service names and network addresses must provide other means to assure the authenticity and integrity of response data. In the case of DNS, employ DNSSEC to provide an additional data origin and integrity artifacts along with the authoritative data the system returns in response to DNS name/address resolution queries.

STIG	Date
Infoblox 7.x DNS Security Technical Implementation Guide	2020-12-10

Details

Check Text ( C-15405r295833_chk )
Note: For Infoblox DNS systems on a Classified network, this requirement is Not Applicable. Validate that DNSSEC validation is enabled by navigating to Data Management >> DNS >> Grid DNS properties. Note: DNSSEC validation is only applicable on a grid member where recursion is active. Toggle Advanced Mode click on "DNSSEC" tab. When complete, click "Cancel" to exit the "Properties" screen. If both "Enable DNSSEC" and "Enable DNSSEC validation" are not enabled, this is a finding.

Check Text ( C-15405r295833_chk )

Note: For Infoblox DNS systems on a Classified network, this requirement is Not Applicable.

Validate that DNSSEC validation is enabled by navigating to Data Management >> DNS >> Grid DNS properties.

Note: DNSSEC validation is only applicable on a grid member where recursion is active.

Toggle Advanced Mode click on "DNSSEC" tab.
When complete, click "Cancel" to exit the "Properties" screen.

If both "Enable DNSSEC" and "Enable DNSSEC validation" are not enabled, this is a finding.

Fix Text (F-15403r295834_fix)
DNSSEC validation is enabled by navigating to Data Management >> DNS >> Grid DNS properties. Toggle Advanced Mode click on "DNSSEC" tab. Enable both "Enable DNSSEC" and "Enable DNSSEC validation". When complete, click "Save & Close" to save the changes and exit the "Properties" screen. Perform a service restart if necessary.