OpenControls Logo

STIG Viewer

STIGViewer Support

Every NS record in a zone file on a BIND 9.x server must point to an active name server and that name server must be authoritative for the domain specified in that record.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-272400BIND-9X-001470SV-272400r1123993_ruleCCI-000366medium
Description
Poorly constructed NS records pose a security risk because they create conditions under which an adversary might be able to provide the missing authoritative name services that are improperly specified in the zone file. The adversary could issue bogus responses to queries that clients would accept because they learned of the adversary's name server from a valid authoritative name server, one that need not be compromised for this attack to be successful. The list of secondary servers must remain current with any changes to the zone architecture that would affect the list of secondaries. If a secondary server has been retired or is not operational but remains on the list, an adversary might have a greater opportunity to impersonate that secondary without detection, rather than if the secondary were actually online. For example, the adversary may be able to spoof the retired secondary's IP address without an IP address conflict, which would not be likely to occur if the true secondary were active.
STIGDate
BIND 9.x Security Technical Implementation Guide2026-02-25

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (8) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CFG-01Configuration Management Program
1.00
END-01Endpoint Device Management (EDM)
1.00
END-04Malicious Code Protection (Anti-Malware)
1.00
END-06Endpoint File Integrity Monitoring (FIM)
1.00
MON-01Continuous Monitoring
1.00
MON-01.7File Integrity Monitoring (FIM)
1.00
CFG-02Secure Baseline Configurations
0.50
CFG-02.7Approved Configuration Deviations
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (100) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-12Session Termination
1.00
AC-16(1)Dynamic Attribute Association
1.00
AC-17(1)Monitoring and Control
1.00
AC-2Account Management
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-24(1)Transmit Access Authorization Information
1.00
AC-25Reference Monitor
1.00

+90 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.4.1
1.00
3.4.2
1.00
CCI1 mapping
CCI-000366
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

DE.CM-09
1.00
PR.PS-01
1.00
PR.DS-10
0.50
PR.PSPlatform Security
0.50
PR.PS-05
0.50

Who does this work

10 NICE work roles and 9 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-272400r1123993_chk)

Verify that each name server listed on the BIND 9.x server is authoritative for the domain it supports. Inspect the "named.conf" file and identify all of the zone files that the BIND 9.x server is using. zone "example.com" { file "zone_file"; }; Inspect each zone file and identify each NS record listed. 86400 NS ns1.example.com 86400 NS ns2.example.com With the assistance of the DNS administrator, verify that each name server listed is authoritative for that domain. If name servers are listed in the zone file that are not authoritative for the specified domain, this is a finding.

Fix Text (F-76357r1123992_fix)

Edit the zone file(s). Remove any name server for which the BIND 9.x server is not authoritative. Restart the BIND 9.x process.