CVE-2022-24817— Flux2 代码注入漏洞
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一、 漏洞 CVE-2022-24817 基础信息
漏洞信息
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Vulnerability Title
Improper kubeconfig validation allows arbitrary code execution
来源: CVE Program / CVE List V5
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
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
来源: CVE Program / CVE List V5
Vulnerability Title
Flux2 代码注入漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Flux2是云原生计算基金会（Cloud Native Computing Foundation）的一种使 Kubernetes 集群与配置源保持同步的工具。 Flux2 v0.29.0 之前版本，Flux2 helm-controller v0.19.0之前版本，Flux2 kustomize-controller v0.23.0 之前版本存在安全漏洞，该漏洞源于容易受到恶意 Kubeconfig 的代码注入攻击。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2022-24817 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2022-24817 厂商安全公告 (1)
- https://github.com/fluxcd/flux2/security/advisories/GHSA-vvmq-fwmg-2gjcx_refsource_CONFIRM
同批安全公告 · fluxcd · 2022-05-06 · 共 3 条
| CVE-2022-24877 | 9.9 CRITICAL | Flux2 路径遍历漏洞 |
| CVE-2022-24878 | 7.7 HIGH | Flux2 路径遍历漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2022-24817
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