The docker.service file should have auditing configured if applicable

docker

Classification:

compliance

Framework:

cis-docker

Control:

1.2.6

Set up the docker integration.

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Description

Audit the docker.service if applicable.

Rationale

As well as auditing the Linux file system and system calls, you should also audit all Docker-related files and directories. The Docker daemon runs with root privileges and its behavior depends on some key files and directories, including docker.service. The docker.service file might be present if the daemon parameters have been changed by an administrator. If so, it holds various parameters for the Docker daemon and should be audited.

Audit

  1. Locate the docker.service file by running:

    systemctl show -p FragmentPath docker.service

    If the file does not exist, this recommendation does not apply.

  2. Verify if there is an audit rule corresponding to the docker.service file by running:

    auditctl -l | grep docker.service

Remediation

  1. Create a new audit rule file if the file exists. For example:

    echo "-w /usr/lib/systemd/system/docker.service -k docker" > /etc/audit/rules.d/docker.rules

  2. Reload the audit rules:

    augenrules --load

  3. Restart the audit daemon:

    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 docker.service may not be present on the system.

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).