Memory usage for all containers must be limited in Docker Enterprise.
An XCCDF Rule
Description
<VulnDiscussion>By default, all containers on a Docker host share the resources equally. By using the resource management capabilities of Docker host, such as memory limit, the amount of memory that a container may consume can be controlled. By default, container can use all of the memory on the host. The user can use memory limit mechanism to prevent a denial of service arising from one container consuming all of the host’s resources such that other containers on the same host cannot perform their intended functions. Having no limit on memory can lead to issues where one container can easily make the whole system unstable, and as a result, unusable. By default, all containers on a Docker host share the resources equally. No memory limits are enforced.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-235806r627545_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Document container memory requirements in the System Security Plan (SSP).
Run the container with only as much memory as required. Always run the container using the --memory argument.
For example, run a container as below: