Image without digest

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Metadata

Id: 7c81d34c-8e5a-402b-9798-9f442630e678

Cloud Provider: Kubernetes

Platform: Kubernetes

Severity: Low

Category: Insecure Configurations

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Description

Images should be specified with their digests to ensure integrity. The policy checks containers and initContainers entries in the resource spec and flags any image value that does not include a digest (i.e., missing the ‘@’ separator). Specifying images by digest enforces immutability and helps ensure consistent, repeatable, and trusted deployments.

Compliant Code Examples

apiVersion: v1
kind: Pod
metadata:
  name: private-image-test-1
spec:
  containers:
    - name: uses-private-image
      image: image@sha256:45b23dee08af5e43a7fea6c4cf9c25ccf269ee113168c19722f87876677c5cb
      imagePullPolicy: Always
      command: [ "echo", "SUCCESS" ]

Non-Compliant Code Examples

apiVersion: v1
kind: Pod
metadata:
  name: private-image-test-1
spec:
  containers:
    - name: uses-private-image
      image: $PRIVATE_IMAGE_NAME
      imagePullPolicy: Always
      command: [ "echo", "SUCCESS" ]