Vulnerability Description
Flux2 is an open and extensible continuous delivery solution for Kubernetes. Flux2 versions between 0.1.0 and 0.29.0, helm-controller 0.1.0 to v0.19.0, and kustomize-controller 0.1.0 to v0.23.0 are vulnerable to Code Injection via malicious Kubeconfig. In multi-tenancy deployments this can also lead to privilege escalation if the controller's service account has elevated permissions. Workarounds include disabling functionality via Validating Admission webhooks by restricting users from setting the `spec.kubeConfig` field in Flux `Kustomization` and `HelmRelease` objects. Additional mitigations include applying restrictive AppArmor and SELinux profiles on the controller’s pod to limit what binaries can be executed. This vulnerability is fixed in kustomize-controller v0.23.0 and helm-controller v0.19.0, both included in flux2 v0.29.0
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fluxcd | Flux2 | >= 0.1.0, < 0.29.0 |
| Fluxcd | Helm-Controller | >= 0.2.0, < 0.19.0 |
| Fluxcd | Kustomize-Controller | >= 0.1.0, < 0.23.0 |
Related Weaknesses (CWE)
References
- https://github.com/fluxcd/flux2/security/advisories/GHSA-vvmq-fwmg-2gjcPatchThird Party Advisory
- https://github.com/fluxcd/flux2/security/advisories/GHSA-vvmq-fwmg-2gjcPatchThird Party Advisory
FAQ
What is CVE-2022-24817?
CVE-2022-24817 is a vulnerability with a CVSS score of 9.9 (CRITICAL). Flux2 is an open and extensible continuous delivery solution for Kubernetes. Flux2 versions between 0.1.0 and 0.29.0, helm-controller 0.1.0 to v0.19.0, and kustomize-controller 0.1.0 to v0.23.0 are vu...
How severe is CVE-2022-24817?
CVE-2022-24817 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2022-24817?
Check the references section above for vendor advisories and patch information. Affected products include: Fluxcd Flux2, Fluxcd Helm-Controller, Fluxcd Kustomize-Controller.