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Check: SRG-APP-000219-DNS-000029

Domain Name System (DNS) SRG: SRG-APP-000219-DNS-000029 (in versions v3 r2 through v2 r4)

Title

The DNS implementation must protect the authenticity of communications sessions for dynamic updates. (Cat II impact)

Discussion

DNS is a fundamental network service that is prone to various attacks, such as cache poisoning and man-in-the middle attacks. If communication sessions are not provided appropriate validity protections, such as the employment of DNSSEC, the authenticity of the data cannot be guaranteed.

Check Content

Review the DNS server configuration to determine if communication sessions for dynamic updates are provided authenticity protection. If communications sessions do not employ authenticity protections, this is a finding.

Fix Text

Configure the DNS server to employ mechanisms to protect the authenticity of communications sessions for dynamic updates.

Additional Identifiers

Rule ID: SV-205183r879636_rule

Vulnerability ID: V-205183

Group Title: SRG-APP-000219

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CCIs

CCIs tied to check.

Number	Definition
CCI-001184	The information system protects the authenticity of communications sessions.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
SC-23	Session Authenticity