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CIS Docker Benchmark - InSpec Profile

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Description

This InSpec compliance profile implement the CIS Docker 1.13.0 Benchmark in an automated way to provide security best-practice tests around Docker daemon and containers in a production environment.

InSpec is an open-source run-time framework and rule language used to specify compliance, security, and policy requirements for testing any node in your infrastructure.

Requirements

  • at least InSpec version 2.3.23
  • Docker 1.13+

Platform

  • Debian 8
  • Ubuntu 16.04
  • CentOS 7

Attributes

We use a yml attribute file to steer the configuration, the following options are available:

  • trusted_user: vagrant define trusted user to control Docker daemon.
  • authorization_plugin: authz-broker define authorization plugin to manage access to Docker daemon.
  • log_driver: syslog define preferable way to store logs.
  • log_opts: /syslog-address/ define Docker daemon log-opts.
  • registry_cert_path: /etc/docker/certs.d directory contains various Docker registry directories.
  • registry_name: /etc/docker/certs.d/registry_hostname:port directory contain certificate certain Docker registry.
  • registry_ca_file: /etc/docker/certs.d/registry_hostname:port/ca.crt certificate file for a certain Docker registry certificate files.
  • container_user: vagrant define user within containers.
  • app_armor_profile: docker-default define apparmor profile for Docker containers.
  • selinux_profile: /label\:level\:s0-s0\:c1023/ define SELinux profile for Docker containers.
  • container_capadd: null define needed capabilities for containers. example: container_capadd: NET_ADMIN,SYS_ADMIN
  • managable_container_number: 25 keep number of containers on a host to a manageable total.
  • daemon_tlscacert : /etc/docker/ssl/ca.pem configure the certificate authority.
  • daemon_tlscert: /etc/docker/ssl/server_cert.pem configure the server certificate.
  • daemon_tlskey: /etc/docker/ssl/server_key.pem configure the server key.
  • swarm_mode: inactive configure the swarm mode.
  • swarm_max_manager_nodes: 3 configure the maximum number of swarm leaders.
  • swarm_port: 2377 configure the swarm port.
  • benchmark_version to execute also the old controls from previous benchmarks, e.g. set it to 1.12.0 to execute also the tests from cis-benchmark-1.12.0 (which is the default).

These settings can be overridden using an attributes file (e.g. --attrs <attributefile.yml>). See sample_attributes.yml as an example.

Usage

InSpec makes it easy to run your tests wherever you need. More options listed here: InSpec cli

# run profile locally
$ git clone https://github.com/dev-sec/cis-docker-benchmark
$ inspec exec cis-docker-benchmark

# run profile locally and directly from Github
$ inspec exec https://github.com/dev-sec/cis-docker-benchmark

# run profile on remote host via SSH
inspec exec cis-docker-benchmark -t ssh://user@hostname -i /path/to/key

# run profile on remote host via SSH with sudo
inspec exec cis-docker-benchmark -t ssh://user@hostname -i /path/to/key --sudo

# run profile on remote host via SSH with sudo and define attribute value
inspec exec cis-docker-benchmark --attrs sample_attributes.yml

# run profile direct from inspec supermarket
inspec supermarket exec dev-sec/cis-docker-benchmark -t ssh://user@hostname --key-files private_key --sudo

Run individual controls

In order to verify individual controls, just provide the control ids to InSpec:

inspec exec cis-docker-benchmark --controls 'cis-docker-benchmark-1.4 cis-docker-benchmark-1.5'

Contributors + Kudos

License and Author

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.