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XCCDF
Docker Enterprise 2.x Linux/UNIX Security Technical Implementation Guide
SRG-APP-000386
Content Trust enforcement must be enabled in Universal Control Plane (UCP) in Docker Enterprise.
Content Trust enforcement must be enabled in Universal Control Plane (UCP) in Docker Enterprise.
An XCCDF Rule
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Content Trust enforcement must be enabled in Universal Control Plane (UCP) in Docker Enterprise.
Medium Severity
The UCP and Docker Trusted Registry (DTR) components of Docker Enterprise can be used in concert to perform an integrity check of organization-defined software at startup. In the context of Docker Enterprise, software would be analogous to Docker images that have been pulled from trusted or untrusted sources. Docker Hub is the most common upstream endpoint for retrieving Docker images. However, only "Docker Certified" images on Docker Hub are considered trusted and come with SLAs and trusted signatures from their respective vendors. All other images from Docker Hub or other external registries must be carefully inspected and triaged prior to use. Docker Content Trust (DCT) provides for content integrity checking mechanisms on Docker images. DCT can be combined with LDAP, Docker Trusted Registry (DTR) and Universal Control Plane (UCP) to enforce image signatures from users/accounts in LDAP. Therefore, to meet the requirements of this control, it is imperative that UCP has LDAP integration enabled and that content trust enforcement is enabled and properly configured. An operational requirement of this control is that of the required use of an established continuous integration and deployment workflow that effectively dictates exactly what software is allowed to run on UCP.