CVE-2022-24817
Improper kubeconfig validation allows arbitrary code execution
描述
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
如何修補 CVE-2022-24817
要修補 CVE-2022-24817,請將受影響套件升級到下列已修補版本。
- —升級至 0.29.0 或更新版本
- —升級至 0.23.0 或更新版本
- —升級至 0.29.0 或更新版本
- —升級至 0.19.0 或更新版本
- —升級至 0.23.0 或更新版本
CVE-2022-24817 正在被利用嗎?
低 — EPSS 為 1.0%,目前沒有觀察到大規模利用活動。
受影響套件(5)
- >= 0.1.0, < 0.29.0
- >= 0.1.0, < 0.23.0
- >= 0.1.0, < 0.29.0
- >= 0.2.0, < 0.19.0
- >= 0.1.0, < 0.23.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |