Details

Verify that the Docker server certificate key file (the file that is passed alongwith –tlskey parameter) is owned and group-owned by root.

Rationale:

The Docker server certificate key file should be protected from any tampering or unneeded reads. It holds the private key for the Docker server certificate. Hence, it must be owned and group-owned by root to maintain the integrity of the Docker server certificate.

Solution

chown root:root This would set the ownership and group-ownership for the Docker server certificate key file to root.
Impact:
None.
Default Value:
By default, the ownership and group-ownership for Docker server certificate key file is correctly set to root.

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/1726

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.

References

• 800-53|CM-6b.
• CSCv6|5.1

Source

• Tenable.com/audits