Title

The Infoblox DNS server implementation must maintain the integrity of information during preparation for transmission. (Cat II impact)

Discussion

Information can be unintentionally or maliciously disclosed or modified during preparation for transmission, including, for example, during aggregation, at protocol transformation points, and during packing/unpacking. These unauthorized disclosures or modifications compromise the confidentiality or integrity of the information. Confidentiality is not an objective of DNS, but integrity is. DNS is responsible for maintaining the integrity of DNS information while it is being prepared for transmission.

Check Content

Note: For Infoblox DNS systems on a classified network, this requirement is Not Applicable. 1. Navigate to Data Management >> DNS >> Zones. 2. For all external-facing authoritative zones and review all external authoritative zones. Note: To add "Signed" column, select an existing column >> down arrow >> Columns >> Edit Columns. Set the "Signed" check box to "Visible" and select "Apply". DNSSEC signing status will be displayed in the "Zones" tab. 3. Verify that external authoritative zones are DNSSEC signed. If DNSSEC is not used for authoritative DNS, this is a finding.

Fix Text

Note: Ensure DNSSEC is configured to meet all other STIG requirements prior to signing a zone to avoid signing with an unapproved configuration. 1. Navigate to Data Management >> DNS >> Zones. 2. Select the appropriate zone using the check box. Using the "DNSSEC" drop-down menu, select "Sign Zones". 3. Follow prompts to acknowledge zone signing. 4. Perform a service restart if necessary.

Additional Identifiers

Rule ID: SV-233925r621666_rule

Vulnerability ID: V-233925

Group Title: SRG-APP-000441-DNS-000066

Expert Comments

CCIs tied to check.

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