Secure supply chain is one of the hottest topics right now. Many organizations are implementing strategies to verify the provenance of their software starting from the development phase up to the deployment in production.
Sigstore is an open source project that makes incredibly easy to sign and verify assets. Lots of open source projects and organizations are using it to sign and verify their container images, system packages and any kind of binary artifact.
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We are glad to announce that deploying Kubewarden in air gap environments has been simplified and documented! For that, you will need a private OCI registry accessible by your Kubernetes cluster. Kubewarden policies are WebAssembly modules; therefore they can be stored inside an OCI-compliant registry as OCI artifacts. For an air gap installation you need to download all the Kubewarden container images and policies in your workstation, then move them to your private OCI registry.
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It’s fact of life: as the Kubernetes API evolves, it’s periodically reorganized or upgraded. This means some Kubernetes resources can be deprecated and later removed.
We deserve to easily keep track of those deprecations and removals. For that, we have just released the deprecated-api-versions policy.
A look at the deprecated-api-versions policy This policy detects the usage of Kubernetes resources that have been deprecated or removed from the Kubernetes API.
The policy has two settings:
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We present to you the new volumeMounts Policy: It inspects containers, init containers, and ephemeral containers, and restricts their usage of volumes by checking the volume name being used in the containers' volumeMounts[*].name.
You can find it published in Artifact Hub. As usual, its artifact is signed with Sigstore in keyless mode, and if you are curious, you can peek into the policy’s implementation in Rust here.
This new policy joins the already existing volumes-psp policy, which provides an allowlist of volume types, and hostpaths-psp policy, with an allowlist of hostPath volumes.
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We’re glad to present the new environment-variable-policy to Kubewarden users. With this policy, you will now be able to inspect init containers and ephemeral containers. You can also restrict their usage by reviewing the names and values defined under the containers' env[*] field.
As always, the policy can be found in ArtifactHub and all the artifacts, including the BOM files, are signed with Sigstore.
What is so useful about the new environment-variable policy?
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The Kubewarden development team is happy to announce the release of the Kubewarden 1.3 stack.
In addition to the usual amount of small fixes, this release focused on the following themes.
Improve end users confidence We want our users to feel confident about using Kubewarden, knowing that good development and security practices are being followed by the Kubewarden project. We think this is particularly relevant to Kubewarden, given our users trust us to keep their Kubernetes clusters secure and compliant.
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We are thrilled to announce you can now scan your environment variables for secrets with the new env-variable-secrets-scanner-policy! This policy rejects a Pod or workload resources such as Deployments, ReplicaSets, DaemonSets , ReplicationControllers, Jobs, CronJobs etc. if a secret is found in the environment variable within a container, init container, or ephemeral container. Secrets that are leaked in plain text or in base64 encoded variables are detected.
This policy uses rusty hog, an open source secret scanner from New Relic.
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We are happy to announce the first minor release of v1.0: v1.1.1 is now available!
Apart from being a nice looking number, v1.1.1 includes:
Improved the policies API for Sigstore verification by adding new backwards-compatible WaPC host callback v2/verify functions to the API. Check them out here to add support for your language of choice.
This has been used in the verify-image-signatures policy to simplify verification of GitHub Actions signatures and others.
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Today we’re happy to announce that Artifact Hub now supports Kubewarden policies! 🤯 🥳
Artifact Hub is the de-facto place where Cloud Native users search for helm charts, container images, and other kinds of artifacts and configurations of different CNCF projects. That’s why we are super excited and honored to have Kubewarden policies listed on Artifact Hub.
This would not have been possible without the work done by the Artifact Hub team.
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With the latest releases of Kubewarden v1.1.0 and the verify-image-signatures policy, it’s now possible to use GithubActions or KeylessPrefix for verifying images. Read our previous blog post if you want to learn more about how to verify container images with Sigstore using Kubewarden.
Let’s see it in action! We want to verify the image ghcr.io/raulcabello/app-example which was built and signed inside a GitHub action using this GitHub Action.
Out of the box, GitHub Actions have a specially crafted environment that makes Sigstore keyless signing work in a non-interactive way.
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