STIGQter: STIG Summary: Microsoft Windows 2012 Server Domain Name System Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

The salt value for zones signed using NSEC3 RRs must be changed every time the zone is completely re-signed.

DISA Rule

SV-215609r561297_rule

Vulnerability Number

V-215609

Group Title

SRG-APP-000516-DNS-000077

Rule Version

WDNS-SC-000001

Severity

CAT II

CCI(s)

• CCI-002450 - The information system implements organization-defined cryptographic uses and type of cryptography required for each use in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.

Weight

10

Fix Recommendation

Sign, or re-sign, the hosted zone(s) on the DNS server being validated.

Log on to the DNS server using the Domain Admin or Enterprise Admin account or Local Administrator account.

Press Windows Key + R, execute dnsmgmt.msc.

On the opened DNS Manager snap-in from the left pane, expand the server name for the DNS server, and then expand Forward Lookup Zones.

From the expanded list, right-click to select the zone (repeat for each hosted zone), point to DNSSEC, and then click Sign the Zone, either using approved saved parameters or approved custom parameters.

Re-validate the NSEC3PARAM Inception date and time against the DNSKEY date and time.

Check Contents

Note: This check is Not applicable for Windows 2012 DNS Servers that only host Active Directory integrated zones or for Windows 2012 DNS servers on a Classified network.

In Windows 2012, the NSEC3 salt values are automatically changed when the zone is resigned.

To validate:
Log on to the DNS server using the Domain Admin or Enterprise Admin account or Local Administrator account.

Press Windows Key + R, execute dnsmgmt.msc.

On the opened DNS Manager snap-in from the left pane, expand the server name for the DNS Server, and then expand Forward Lookup Zones.

From the expanded list, click to select the zone.

Review the zone's RRs in the right window pane.

Determine the RRSIG NSEC3PARAM's Inception (in the Data column). Compare the Inception to the RRSIG DNSKEY Inception. The date and time should be the same.

If the NSEC3PARAM's Inception date and time is different than the DNSKEY Inception Date and Time, this is a finding.

Vulnerability Number

V-215609

Documentable

False

Rule Version

WDNS-SC-000001

Severity Override Guidance

Note: This check is Not applicable for Windows 2012 DNS Servers that only host Active Directory integrated zones or for Windows 2012 DNS servers on a Classified network.

In Windows 2012, the NSEC3 salt values are automatically changed when the zone is resigned.

To validate:
Log on to the DNS server using the Domain Admin or Enterprise Admin account or Local Administrator account.

Press Windows Key + R, execute dnsmgmt.msc.

On the opened DNS Manager snap-in from the left pane, expand the server name for the DNS Server, and then expand Forward Lookup Zones.

From the expanded list, click to select the zone.

Review the zone's RRs in the right window pane.

Determine the RRSIG NSEC3PARAM's Inception (in the Data column). Compare the Inception to the RRSIG DNSKEY Inception. The date and time should be the same.

If the NSEC3PARAM's Inception date and time is different than the DNSKEY Inception Date and Time, this is a finding.

Check Content Reference

M

Target Key

4016

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