Title

The DNS server implementation must validate the binding of the other DNS servers identity to the DNS information for a server-to-server transaction (e.g., zone transfer). (Cat II impact)

Discussion

Validation of the binding of the information prevents the modification of information between production and review. The validation of bindings can be achieved, for example, by the use of cryptographic checksums. Validations must be performed automatically. DNSSEC and TSIG/SIG(0) technologies are not effective unless the digital signatures they generate are validated to ensure that the information has not been tampered with and that the producer's identity is legitimate.

Check Content

Review the DNS server implementation configuration to determine if the DNS server validates the binding of the other DNS server's identity to the DNS information for a server-to-server transaction (e.g., zone transfer). If the DNS server does not validate the binding of the other DNS server's identity to the DNS information, this is a finding.

Fix Text

Configure the DNS server to validate the binding of the other DNS server's identity to the DNS information for a server-to-server transaction (e.g., zone transfer).

Additional Identifiers

Rule ID: SV-205198r879726_rule

Vulnerability ID: V-205198

Group Title: SRG-APP-000349

Expert Comments

CCIs tied to check.

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