V-243501
Active Directory Domain Security Technical Implementation Guide
Title
The impact of CPCON changes on the cross-directory authentication configuration must be considered and procedures documented.
Description
<VulnDiscussion>When incidents occur that require a change in the Cyber Protection Conditions (CPCON) with the release of USSCI 5200-13 status, it may be necessary to take action to restrict or disable certain types of access based on a directory outside the Component's control. Cross-directory configurations (such as trusts and pass-through authentication) are specifically designed to enable resource access across directories. If conditions indicate an outside directory is at increased risk of ...
Fix Text (Documentation Requirement)
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.