Container Registry Scanning

What is container registry scanning?

Think of container registry scanning as a security checkpoint for your software before it gets “shipped” to production. In the world of DevOps, we use Containers (like Docker) to package code. These containers are stored in a Registry (a digital warehouse). Container registry scanning is the automated process of inspecting these packages to ensure they aren’t carrying any digital “contraband,” particularly security vulnerabilities or malware.

Why is it necessary?

The cold, hard reality of modern software is that we’re all standing on the shoulders of giants… and some of those giants have underlying health issues. When you pull a base image or a library, you’re inheriting every security decision (and mistake) made by the people who built it.

Here’s why container registry scanning is the hill to die on if you care about your production environment:

• The “Rot” Factor: A container that was “safe” yesterday might be “vulnerable” today because a new exploit was discovered in a library you use.
• Supply Chain Security: It prevents “poisoned” images from entering your environment.
• Compliance: Many industries (like finance or healthcare) require documented proof that software has been screened for vulnerabilities.

How it works (when you’re doing it right)

In the real world, security isn’t a linear conveyor belt; it’s more like a continuous loop of re-evaluation. If you just scan an image once when it hits the registry and call it a day, you’re missing the point. Here’s how the process actually breaks down when you’re doing it right:

1. Initial analysis: This is where the scanner actually “looks under the hood” to identify the OS, the package managers, and the language-level dependencies. This happens once per image version, but the data it produces is the “source of truth” for everything that follows.
2. Continuous scanning: Container registry scanners like that in Anchore Enterprise take the inventory it found in step one and constantly compare it against the latest threat feeds. Even when your image hasn’t changed, the world has; “clean” images don’t always stay that way. 
3. Policy enforcement: Scanning is useless if you don’t do anything with the data. Defined policy enforcement turns a container registry scanner from a passive reporter into an active participant in your infrastructure’s defense.

Container registry scanning with Anchore Enterprise

Anchore Enterprise provides continuous security checks directly in your container image registry, making it easy to identify and remediate new risks and vulnerabilities as they emerge.

Here’s how it works:

Benefits of container registry scanning with Anchore

1. Integrate natively

Our native integrations make it easy to scan the contents of popular container registries, including Harbor, Quay, JFrog, and DockerHub, as well as offerings from AWS, Azure, and Google.

2. Monitor public or private repos

Watch repos or tags to identify new or unscanned images. Continue to re-analyze SBOMs for already-scanned images to identify new vulnerabilities.

3. Enforce policies

Identify images that are out of compliance with policies that flag problems. Alert security teams or trigger automated workflows for violations.

4. Gain security insights

See the security status of containers in your registry by repo, tag, or other metadata.

Request a demo or contact us to speak with our security experts and learn how Anchore’s SBOM-powered platform can help secure your software supply chain.