Image scanning - Amazon ECR
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Image scanning

Amazon ECR image scanning helps in identifying software vulnerabilities in your container images. The following scanning types are offered.

  • Enhanced scanning—Amazon ECR integrates with Amazon Inspector to provide automated, continuous scanning of your repositories. Your container images are scanned for both operating systems and programing language package vulnerabilities. As new vulnerabilities appear, the scan results are updated and Amazon Inspector emits an event to EventBridge to notify you.

  • Basic scanning—Amazon ECR uses the Common Vulnerabilities and Exposures (CVEs) database from the open-source Clair project. With basic scanning, you configure your repositories to scan on push or you can perform manual scans and Amazon ECR provides a list of scan findings.

Using filters

When an image scanning is configured for your private registry, you may specify that all repositories be scanned or you can specify filters to scope which repositories are scanned.

When basic scanning is used, you may specify scan on push filters to specify which repositories are set to do an image scan when new images are pushed. Any repositories not matching a basic scanning scan on push filter will be set to the manual scan frequency which means to perform a scan, you must manually trigger the scan.

When enhanced scanning is used, you may specify separate filters for scan on push and continuous scanning. Any repositories not matching an enhanced scanning filter will have scanning disabled. If you are using enhanced scanning and specify separate filters for scan on push and continuous scanning where multiple filters match the same repository, then Amazon ECR enforces the continuous scanning filter over the scan on push filter for that repository.

When a filter is specified, a filter with no wildcard will match all repository names that contain the filter. A filter with a wildcard (*) matches on any repository name where the wildcard replaces zero or more characters in the repository name. The following table provides examples where repository names are expressed on the horizontal axis and example filters are specified on the vertical axis.

prod

repo-prod

prod-repo

repo-prod-repo

prodrepo

prod

Yes Yes Yes Yes Yes

*prod

Yes Yes No No No

prod*

Yes No Yes No Yes

*prod*

Yes Yes Yes Yes Yes

prod*repo

No No Yes No Yes