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CVE-2022-24877— Improper path handling in kustomization files allows path traversal

Quick assessment

Affected
fluxcd flux2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

kustomize-controller是一个 Kubernetes 操作员，专门为使用 Kubernetes 清单定义并使用 Kustomize 组装的基础设施和工作负载运行持续交付管道。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。 kustomize-controller v0.24.0之前版本和Flux2 v0.29.0之前版本存在路径遍历漏洞，攻击者利用该漏洞可以使用内置功能和特制的功

CVSS 9.9 · Critical EPSS 1.14% · P64
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I. Basic Information for CVE-2022-24877

Vulnerability Information
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Vulnerability Title
Improper path handling in kustomization files allows path traversal
Source: CVE Program / CVE List V5
Vulnerability 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 expose sensitive data from the controller’s pod filesystem and possibly privilege escalation in multi-tenancy deployments. 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.
Source: 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
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Flux2 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
kustomize-controller是一个 Kubernetes 操作员，专门为使用 Kubernetes 清单定义并使用 Kustomize 组装的基础设施和工作负载运行持续交付管道。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。 kustomize-controller v0.24.0之前版本和Flux2 v0.29.0之前版本存在路径遍历漏洞，攻击者利用该漏洞可以使用内置功能和特制的功
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
fluxcd flux2 flux2 < v0.29.0 -

II. Public POCs for CVE-2022-24877

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III. Intelligence Information for CVE-2022-24877

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Vendor Advisories for CVE-2022-24877 (1)

Same Patch Batch · fluxcd · 2022-05-06 · 3 CVEs total

CVE-2022-24817 9.9 CRITICAL Improper kubeconfig validation allows arbitrary code execution
CVE-2022-24878 7.7 HIGH Improper path handling in Kustomization files allows for denial of service

IV. Related Vulnerabilities

Same product: flux2
Same vendor: fluxcd
Same weakness: CWE-22

V. Comments for CVE-2022-24877

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