STIGQter: STIG Summary: Active Directory Domain Security Technical Implementation Guide Version: 3 Release: 7 Benchmark Date: 01 Apr 2026:

The impact of CPCON changes on the cross-directory authentication configuration must be considered and procedures documented.

DISA Rule

SV-243501r1016334_rule

Vulnerability Number

V-243501

Group Title

SRG-OS-000480

Rule Version

DS00.7100_AD

Severity

CAT III

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Evaluate cross-directory configurations (such as trusts and pass-through authentication) and provide documentation that indicates:
1. An evaluation was performed.
2. The specific AD trust configurations, if any, that must be disabled during changes in CPCON status because they could represent increased risk.

Check Contents

1. Refer to the list of actual manual AD trusts (cross-directory configurations) collected from the site representative.

2. If there are no manual AD trusts (cross-directory configurations) defined, this check is not applicable.
For AD, this includes external, forest, or realm trust relationship types.

3. Obtain a copy of the site's supplemental CPCON procedures as required by Strategic Command Directive (SD) 527-1.

4. Verify that it has been determined by the IAM whether CPCON response actions need to include procedures to disable manual AD trusts (cross-directory configurations). The objective is to determine if the need has been explicitly evaluated.

5. If it has been determined that actions to disable manual AD trusts (cross-directory configurations) are not necessary, then this check is not applicable.

6. If it has been determined that actions to disable manual AD trusts (cross-directory configurations) are necessary, verify that the policy to implement these actions has been documented.

7. If actions to disable manual AD trusts (cross-directory configurations) are needed and no policy has been documented, then this is a finding.

Vulnerability Number

V-243501

Documentable

False

Rule Version

DS00.7100_AD

Severity Override Guidance

1. Refer to the list of actual manual AD trusts (cross-directory configurations) collected from the site representative.

2. If there are no manual AD trusts (cross-directory configurations) defined, this check is not applicable.
For AD, this includes external, forest, or realm trust relationship types.

3. Obtain a copy of the site's supplemental CPCON procedures as required by Strategic Command Directive (SD) 527-1.

4. Verify that it has been determined by the IAM whether CPCON response actions need to include procedures to disable manual AD trusts (cross-directory configurations). The objective is to determine if the need has been explicitly evaluated.

5. If it has been determined that actions to disable manual AD trusts (cross-directory configurations) are not necessary, then this check is not applicable.

6. If it has been determined that actions to disable manual AD trusts (cross-directory configurations) are necessary, verify that the policy to implement these actions has been documented.

7. If actions to disable manual AD trusts (cross-directory configurations) are needed and no policy has been documented, then this is a finding.

Check Content Reference

M

Target Key

5406