STIGQter: STIG Summary: Infoblox 8.x DNS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 09 Jan 2021:

When using non-Grid DNS servers for zone transfers, each name server must use TSIG to uniquely identify the other server.

DISA Rule

SV-233899r621666_rule

Vulnerability Number

V-233899

Group Title

SRG-APP-000158-DNS-000015

Rule Version

IDNS-8X-500002

Severity

CAT II

CCI(s)

• CCI-000778 - The information system uniquely identifies an organization-defined list of specific and/or types of devices before establishing a local, remote, or network connection.

Weight

10

Fix Recommendation

1. Navigate to Data Management >> DNS >> Zones tab.
2. Select a zone and click "Edit".
3. Click on the "Zone Transfers" tab and click "Override" for the "Allow Zone Transfers to" section.
4. Use the radio button to select "Set of ACEs" and the "Add" drop-down to configure a TSIG key.
5. Verify that both the Infoblox and other DNS server have the identical TSIG configuration.
6. Verify that both the Infoblox and other DNS server have time synchronized properly. Note that TSIG relies on both key and time synchronization. TSIG will fail if the local clocks on both names are not synchronized.
7. When complete, click "Save & Close" to save the changes and exit the "Properties" screen.
8. Perform a service restart if necessary.
9. Verify zone transfers are operational after configuration of TSIG.

Check Contents

1. Navigate to Data Management >> DNS >> Zones tab.
2. Review each zone by clicking "Edit" and inspecting the "Name Servers" tab.
3. Verify that each zone that contains non-Grid name servers is further verified by inspection of the "Zone Transfers" tab and configuration of TSIG Access Control Entry (ACE).
4. When complete, click "Cancel" to exit the "Properties" screen.

If all entries in the "Type" column are configured as "Grid", this check is Not Applicable.

If there is a non-Grid system that uses zone transfers but does not have a TSIG key, this is a finding.

Vulnerability Number

V-233899

Documentable

False

Rule Version

IDNS-8X-500002

Severity Override Guidance

1. Navigate to Data Management >> DNS >> Zones tab.
2. Review each zone by clicking "Edit" and inspecting the "Name Servers" tab.
3. Verify that each zone that contains non-Grid name servers is further verified by inspection of the "Zone Transfers" tab and configuration of TSIG Access Control Entry (ACE).
4. When complete, click "Cancel" to exit the "Properties" screen.

If all entries in the "Type" column are configured as "Grid", this check is Not Applicable.

If there is a non-Grid system that uses zone transfers but does not have a TSIG key, this is a finding.

Check Content Reference

M

Target Key

5251

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