aws_ecr_image Resource

[edit on GitHub]

Use the aws_ecr_image InSpec audit resource to test the properties of a single image in an AWS Elastic Container Registry (ECR) repository. This resource is available in InSpec AWS resource pack version 1.11.0 onwards.

Installation

This resource is available in the Chef InSpec AWS resource pack.

See the Chef InSpec documentation on cloud platforms for information on configuring your AWS environment for InSpec and creating an InSpec profile that uses the InSpec AWS resource pack.

Syntax

An aws_ecr_image resource block declares the tests for a single image in an AWS ECR repository by repository name and image identifier.

describe aws_ecr_image(repository_name: 'my-repo', image_tag: 'latest') do
  it { should exist }
end

Parameters

The repository name and the image identifier (either image_tag or image_digest) must be provided. The ID of the registry is optional.

repository_name (required)

The name of the ECR repository must satisfy the following constraints:

• Regex pattern (?:[a-z0-9]+(?:[._-][a-z0-9]+)*/)*[a-z0-9]+(?:[._-][a-z0-9]+)*.
• Minimum 2 and maximum of 256 characters long.

image_tag (required if image_digest not provided)

The tag used for the image. It can not be longer than 300 characters.

image_digest (required if image_tag not provided)

The sha256 digest of the image manifest. It must satisfy this regex pattern: [a-zA-Z0-9-_+.]+:[a-fA-F0-9]+.

registry_id (optional)

The 12-digit ID of the AWS Elastic Container Registry. If not provided, the default registry is assumed.

Properties

repository_name

The name of the repository.

registry_id

The AWS account ID associated with the registry that contains the repository.

tags

The list of tags associated with this image.

vulnerability_severity_counts

The image vulnerability counts, sorted by severity, e.g. {:high=>1}.

vulnerabilities

A list of hashes with each key-value pair corresponding to an image scan findings. E.g. {:name=>"CVE-2019-14697", :uri=>"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14697", :severity=>"HIGH", :package_version=>"1.1.18-r3", :package_name=>"musl", :CVSS2_VECTOR=>"AV:N/AC:L/Au:N/C:P/I:P/A:P", :CVSS2_SCORE=>"7.5"}.

cve_ids

The list of CVE IDs of the vulnerabilities in the image.

highest_vulnerability_severity

The CVSS v2 score of the most severe vulnerability in the image.

There are also additional properties available. For a comprehensive list, see the API reference documentation

Examples

Test the scan status of an image.

describe aws_ecr_image(repository_name: 'my-repo', image_tag: 'latest') do
  its('image_scan_status.status') { should eq 'COMPLETE' }
end

Test that an image has a certain tag.

describe aws_ecr_image(repository_name: 'my-repo', image_digest: 'sha256:687fba9b76554c8dea4c40fed4144011f29b8e1d5db5f2fc976c64ed31894967') do
  its('tags') { should include('latest') }
end

Test that an image does not contain the Heartbleed vulnerability.

describe aws_ecr_image(repository_name: 'my-repo', image_tag: 'latest') do
  its('cve_ids') { should_not include('CVE-2014-0160') }
end

Test that an image does not contain a vulnerability more severe than CVSS v2 score 8.

describe aws_ecr_image(repository_name: 'my-repo', image_tag: 'latest') do
  its('highest_vulnerability_severity') { should be <= 8 }
end    

Matchers

This InSpec audit resource has the following special matchers. For a full list of available matchers, please visit our matchers page.

exist

describe aws_ecr_image(repository_name: 'my-repo', image_tag: 'latest') do
    it { should exist }
end

AWS Permissions

Your Principal will need the ECR:Client:DescribeImagesResponse and ECR:Client:DescribeImageScanFindingsResponse actions set to allow.

You can find detailed documentation at Actions, Resources, and Condition Keys for Amazon ECR, and Actions, Resources, and Condition Keys for Identity And Access Management.