The operating system must perform data integrity verification on the name/address resolution responses the system receives from authoritative sources.

From General Purpose Operating System SRG

Associated with: CCI-002467

SV-71037r1_rule The operating system must perform data integrity verification on the name/address resolution responses the system receives from authoritative sources.

Vulnerability discussion

If data origin authentication and data integrity verification are not performed, the resultant response could be forged, it may have come from a poisoned cache, the packets could have been intercepted without the resolver's knowledge, or resource records could have been removed which would result in query failure or denial of service. Data integrity verification must be performed to thwart these types of attacks.Each client of name resolution services either performs this validation on its own or has authenticated channels to trusted validation providers. Information systems that provide name and address resolution services for local clients include, for example, recursive resolving or caching Domain Name System (DNS) servers. DNS client resolvers either perform validation of DNSSEC signatures, or clients use authenticated channels to recursive resolvers that perform such validations.This is not applicable if DNSSEC is not implemented on the local network.

Check content

Verify the operating system performs data integrity verification on the name/address resolution responses the system receives from authoritative sources. If it does not, this is a finding.

Fix text

Configure the operating system to perform data integrity verification on the name/address resolution responses the system receives from authoritative sources.

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