cis-docker-v170-1.1.6

DevOps & Security

Ensure auditing is configured for Docker files and directories - /etc/docker

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CIS Docker Benchmark v1.7.0 - Control 1.1.6

Profile

Level: 1 - Docker - Linux
Assessment Status: Automated

Description

Audit /etc/docker.

Rationale

As well as auditing the normal Linux file system and system calls, you should also audit all Docker related files and directories. The Docker daemon runs with root privilege and its behavior depends on some key files and directories, one of these being /etc/docker. This holds various certificates and keys used for TLS communication between Docker daemon and Docker client and as such it should be audited.

Impact

Auditing can generate large log files. You should ensure that these are rotated and archived periodically. A separate partition should also be created for audit logs to avoid filling up any other critical partition.

Audit Procedure

You should verify that there is an audit rule applied to the /etc/docker directory. For example, you could execute the command below:

auditctl -l | grep /etc/docker

This should display a rule for the /etc/docker directory.

Remediation

You should add a rule for the /etc/docker directory. For example: Add the line below to the /etc/audit/rules.d/audit.rules file:

-w /etc/docker -k docker

Then restart the audit daemon. For example:

systemctl restart auditd

Default Value

By default, Docker related files and directories are not audited.

References

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/system_design_guide/auditing-the-system_system-design-guide

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	8.5 Collect Detailed Audit LogsConfigure detailed audit logging for enterprise assets containing sensitive data. Include event source, date, username, timestamp, source addresses, destination addresses, and other useful elements that could assist in a forensic investigation.		●	●
v7	14.9 Enforce Detail Logging for Access or Changes to Sensitive DataEnforce detailed audit logging for access to sensitive data or changes to sensitive data (utilizing tools such as File Integrity Monitoring or Security Information and Event Monitoring).			●