STIGQter STIGQter: STIG Summary: Infoblox 7.x DNS Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 22 Jan 2021:

CNAME records must not point to a zone with lesser security for more than six months.

DISA Rule

SV-214219r612370_rule

Vulnerability Number

V-214219

Group Title

SRG-APP-000516-DNS-000114

Rule Version

IDNS-7X-000940

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Navigate to Grid Manager >> Administration >> Logs >> Audit Log >> Filter >> Object Type=CNAME Record, + Action=CREATED, + TimeStamp=Before=6months Ago

Remove any zone-spanning CNAME records that have been active for more than six months.

Check Contents

Infoblox DNS records the creation date of every resource record, including CNAME records in the system and the TimeStamp is attached to the CNAME object. Infoblox can also record the date when the last time this record was used or queried. CNAME records can be removed by the admin when they reach their 6 month maturity date.

Navigate to Grid Manager >> Administration >> Logs >> Audit Log >> Filter >> Object Type=CNAME Record, + Action=CREATED, + TimeStamp=Before=6months Ago

If there are zone-spanning CNAME records older than 6 months and the CNAME records resolve to anything other than fully qualified domain names for glue records supporting zone delegations, CNAME records supporting a system migration, or CNAME records that point to third-party Content Delivery Networks (CDN) or cloud computing platforms with an AO-approved and documented mission need, this is a finding.

Vulnerability Number

V-214219

Documentable

False

Rule Version

IDNS-7X-000940

Severity Override Guidance

Infoblox DNS records the creation date of every resource record, including CNAME records in the system and the TimeStamp is attached to the CNAME object. Infoblox can also record the date when the last time this record was used or queried. CNAME records can be removed by the admin when they reach their 6 month maturity date.

Navigate to Grid Manager >> Administration >> Logs >> Audit Log >> Filter >> Object Type=CNAME Record, + Action=CREATED, + TimeStamp=Before=6months Ago

If there are zone-spanning CNAME records older than 6 months and the CNAME records resolve to anything other than fully qualified domain names for glue records supporting zone delegations, CNAME records supporting a system migration, or CNAME records that point to third-party Content Delivery Networks (CDN) or cloud computing platforms with an AO-approved and documented mission need, this is a finding.

Check Content Reference

M

Target Key

3995

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