XEIZE
/Vulnerability documentation/IaC/Ansible/AWS/ElastiCache engine version and security requirements need review

ElastiCache engine version and security requirements need review

Check supported ElastiCache engine versions and security requirements, then apply compatible upgrades and appropriate access and encryption controls.

Description

A cache engine that is unsupported or lacks required security updates can create maintenance and security-response problems. Identify the deployed engine and actual version, then compare them with AWS support and your requirements. Do not apply a Redis version requirement to Memcached.

An engine version alone does not establish PCI DSS or other compliance. Review the applicable service scope and customer-managed controls such as encryption, authentication and access restrictions.

Potential impact

  • Missing required updates can leave known security issues or operational defects unresolved.
  • Upgrading without compatibility checks can disrupt cache connections or application behavior.

Remediation

  • Select a version and upgrade path supported for the actual engine, Region and node type. Do not use a version number from another engine.
  • Test client and parameter compatibility, and prepare data recovery or cache-rebuild procedures. Review encryption and authentication requirements separately.
  • Check when your module applies changes. community.aws 11.1.0 requests immediate application of version changes; assess maintenance and connection impacts, then verify the deployed version.

Examples

These alternatives change the version of an existing Memcached configuration. Set cache_node_type to a supported node type and approved_memcached_version to a real Memcached version whose compatibility you have checked. Network and authentication settings for the cluster are required separately.

Before

yaml
- name: Basic example
  community.aws.elasticache:
    name: test-please-delete
    state: present
    engine: memcached
    cache_engine_version: 1.4.14
    node_type: "{{ cache_node_type }}"
    num_nodes: 1

The configuration names the older 1.4.14 version. Do not reuse it for a new deployment without checking current support and update requirements.

After

yaml
- name: Basic example
  community.aws.elasticache:
    name: test-please-delete
    state: present
    engine: memcached
    cache_engine_version: "{{ approved_memcached_version }}"
    node_type: "{{ cache_node_type }}"
    num_nodes: 1

The chosen Memcached version is explicit. Verify how the existing cluster with that name is modified, that the upgrade path is supported, and that the change actually takes effect.

References

XEIZE DocumentationTechnical support