GHSA-7pwf-jg34-hxwp

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GHSA-7pwf-jg34-hxwp

Summary: Improper path handling in Kustomization files allows for denial of service

Details: The kustomize-controller enables the use of Kustomize’s functionality when applying Kubernetes declarative state onto a cluster. A malicious user can use a specially crafted `kustomization.yaml` to cause Denial of Service at controller level. In multi-tenancy deployments this can lead to multiple tenants not being able to apply their Kustomizations until the malicious `kustomization.yaml` is removed and the controller restarted. ### Impact Within the affected versions, users with write access to a Flux source are able to craft a malicious `kustomization.yaml` file which causes the controller to enter an endless loop. ### Patches This vulnerability was fixed in kustomize-controller v0.24.0 and included in flux2 v0.29.0 released on 2022-04-20. The changes introduce better handling of Kustomization files blocking references that could lead to endless loops. ### Credits The Flux engineering team found and patched this vulnerability. ### For more information If you have any questions or comments about this advisory please open an issue in the [flux2 repository](http://github.com/fluxcd/flux2).

References: https://github.com/fluxcd/flux2/security/advisories/GHSA-7pwf-jg34-hxwp, https://nvd.nist.gov/vuln/detail/CVE-2022-24878, https://github.com/fluxcd/flux2