One Article Review
| Source |  CVE Liste |
|---|---|
| Identifiant | 3651470 |
| Date de publication | 2021-11-12 18:15:07 (vue: 2021-11-12 20:05:41) |
| Titre | CVE-2021-41254 |
| Texte | kustomize-controller is a Kubernetes operator, specialized in running continuous delivery pipelines for infrastructure and workloads defined with Kubernetes manifests and assembled with Kustomize. Users that can create Kubernetes Secrets, Service Accounts and Flux Kustomization objects, could execute commands inside the kustomize-controller container by embedding a shell script in a Kubernetes Secret. This can be used to run `kubectl` commands under the Service Account of kustomize-controller, thus allowing an authenticated Kubernetes user to gain cluster admin privileges. In affected versions multitenant environments where non-admin users have permissions to create Flux Kustomization objects are affected by this issue. This vulnerability was fixed in kustomize-controller v0.15.0 (included in flux2 v0.18.0) released on 2021-10-08. Starting with v0.15, the kustomize-controller no longer executes shell commands on the container OS and the `kubectl` binary has been removed from the container image. To prevent the creation of Kubernetes Service Accounts with `secrets` in namespaces owned by tenants, a Kubernetes validation webhook such as Gatekeeper OPA or Kyverno can be used. |
| Envoyé | Oui |
| Condensat | 2021 41254 `kubectl` `secrets` account accounts admin affected allowing are assembled authenticated been binary can cluster commands container continuous controller could create creation cve defined delivery embedding environments execute executes fixed flux flux2 from gain gatekeeper has have image included infrastructure inside issue kubernetes kustomization kustomize kyverno longer manifests multitenant namespaces non objects opa operator owned permissions pipelines prevent privileges released removed run running script secret secrets service shell specialized starting such tenants thus under used user users validation versions vulnerability webhook where workloads |
| Tags | Vulnerability |
| Stories | Uber |
| Notes | |
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