Classification:

compliance

Framework:

cis-docker

Control:

1.2.9

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Set up the docker integration.

Description

Audit /etc/sysconfig/docker, if applicable.

Rationale

As well as auditing the Linux file system and system calls, you should also audit the Docker daemon. Because this daemon runs with root privileges, it is very important to audit its activities and usage. Its behavior depends on some key files and directories, including /etc/sysconfig/docker. It contains various parameters related to the Docker daemon when run on CentOS and RHEL based distributions. If present, it is important that it is audited.

Audit

Verify that there is an audit rule associated with the /etc/sysconfig/docker file. To see the rule for the /etc/sysconfig/docker file, run:

auditctl -l | grep /etc/sysconfig/docker

Remediation

You should add a rule for the /etc/sysconfig/docker file. For example, add the following line to a new file in /etc/audit/rules.d/. For instance, create a file named docker.rules:

echo "-w /etc/sysconfig/docker -k docker" > /etc/audit/rules.d/docker.rules

Then, reload the audit rules:

augenrules --load

Next, restart the audit daemon using the following command:

service auditd restart

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.

Default value

By default, Docker-related files and directories are not audited. The file /etc/sysconfig/docker may not be present on the system and in that case, this recommendation is not applicable.

References

1. https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Security_Guide/chap-system_auditing.html

CIS controls

Version 6.14.6 Enforce Detailed Audit Logging For Sensitive Information - Enforce detailed audit logging for access to nonpublic data and special authentication for sensitive data.

Version 7.14.9 Enforce Detail Logging for Access or Changes to Sensitive Data - Enforce 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).