Ensure centralized and remote logging is configured (Manual)
Profile Applicability
• Level 2 - Docker - Linux
Description
Docker supports various logging mechanisms. A preferable method for storing logs is one that supports centralized and remote management.
Rationale
Centralized and remote logging ensures that all important log records are safe even in the event of a major data availability issue. Docker supports various logging methods and you should use the one that best corresponds to your IT security policy.
Impact
None.
Audit Procedure
Run docker info and ensure that the Logging Driver property set as appropriate.
docker info --format '{{ .LoggingDriver }}'
Alternatively, the below command would give you the --log-driver setting. If configured you should ensure that it is set appropriately.
grep "--log-driver" /etc/docker/daemon.json
The contents of /etc/docker/daemon.json should also be reviewed for this setting.
Remediation
Step 1: Set up the desired log driver following its documentation.
Step 2: Start the docker daemon using that logging driver.
For example:
dockerd --log-driver=syslog --log-opt syslog-address=tcp://192.xxx.xxx.xxx
Default Value
By default, container logs are maintained as json files
References
- https://docs.docker.com/config/containers/logging/configure/
CIS Controls
Controls Version: v8
Control: 8.1 Establish and Maintain an Audit Log Management Process
Establish and maintain an audit log management process that defines the enterprise's logging requirements. At a minimum, address the collection, review, and retention of audit logs for enterprise assets. Review and update documentation annually, or when significant enterprise changes occur that could impact this Safeguard.
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Control: 8.9 Centralize Audit Logs
Centralize, to the extent possible, audit log collection and retention across enterprise assets.
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Controls Version: v7
Control: 6.6 Deploy SIEM or Log Analytic tool
Deploy Security Information and Event Management (SIEM) or log analytic tool for log correlation and analysis.
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Control: 6.8 Regularly Tune SIEM
On a regular basis, tune your SIEM system to better identify actionable events and decrease event noise.
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