Description
Flux is an open and extensible continuous delivery solution for Kubernetes. Path Traversal in the kustomize-controller via a malicious `kustomization.yaml` allows an attacker to cause a Denial of Service at the controller level. Workarounds include automated tooling in the user's CI/CD pipeline to validate `kustomization.yaml` files conform with specific policies. This vulnerability is fixed in kustomize-controller v0.24.0 and included in flux2 v0.29.0. Users are recommended to upgrade.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| fluxcd | flux2 | flux2 < v0.28.5, >= v0.19.0, kustomize < v0.29.0, >= v0.16.0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/fluxcd/flux2 | >= 0.19.0, < 0.29.0 | 0.29.0 | GHSA-7pwf-jg34-hxwp |
| Go | github.com/fluxcd/kustomize-controller | >= 0.16.0, < 0.24.0 | 0.24.0 | GHSA-7pwf-jg34-hxwp |