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V-235827

CAT II (Medium)

Docker Enterprise container health must be checked at runtime.

Rule ID

SV-235827r961155_rule

STIG

Docker Enterprise 2.x Linux/UNIX Security Technical Implementation Guide

Version

V2R2

CCIs

CCI-001095

Discussion

If the container image does not have an HEALTHCHECK instruction defined, use --health-cmd parameter at container runtime for checking container health. One of the important security triads is availability. If the container image being used does not have a pre-defined HEALTHCHECK instruction, use the --health-cmd parameter to check container health at runtime. Based on the reported health status, take necessary actions. By default, health checks are not done at container runtime.

Check Content

Ensure container health is checked at runtime.

via CLI:

Linux: As a Docker EE Admin, execute the following command using a Universal Control Plane (UCP) client bundle:

Run the below command and ensure that all the containers are reporting health status:

docker ps --quiet | xargs docker inspect --format '{{ .Id }}: Health={{ .State.Health.Status }}'

If Health does not = "Healthy", this is a finding.

Fix Text

Run the container using --health-cmd and the other parameters, or include the HEALTHCHECK instruction in the Dockerfiles.

Example:
docker run -d --health-cmd='stat /etc/passwd || exit 1' nginx