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CVE-2019-11255— Kubernetes CSI volume snapshot, cloning and resizing features can result in unauthorized volume data access or mutation

Quick assessment

Affected
Kubernetes kubernetes-csi external-provisioner
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.

Kubernetes是美国Linux基金会的一套开源的Docker容器集群管理系统。该系统为容器化的应用提供资源调度、部署运行、服务发现和扩容缩容等功能。 Kubernetes中存在输入验证错误漏洞。攻击者可利用该漏洞绕过访问限制，获取敏感信息。

CVSS 4.8 · Medium EPSS 2.01% · P81
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I. Basic Information for CVE-2019-11255

Vulnerability Information
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Vulnerability Title
Kubernetes CSI volume snapshot, cloning and resizing features can result in unauthorized volume data access or mutation
Source: CVE Program / CVE List V5
Vulnerability Description
Improper input validation in Kubernetes CSI sidecar containers for external-provisioner (<v0.4.3, <v1.0.2, v1.1, <v1.2.2, <v1.3.1), external-snapshotter (<v0.4.2, <v1.0.2, v1.1, <1.2.2), and external-resizer (v0.1, v0.2) could result in unauthorized PersistentVolume data access or volume mutation during snapshot, restore from snapshot, cloning and resizing operations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Kubernetes 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubernetes是美国Linux基金会的一套开源的Docker容器集群管理系统。该系统为容器化的应用提供资源调度、部署运行、服务发现和扩容缩容等功能。 Kubernetes中存在输入验证错误漏洞。攻击者可利用该漏洞绕过访问限制，获取敏感信息。
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
Kubernetes kubernetes-csi external-provisioner prior to 1.0.2 -
Kubernetes kubernetes-csi external-snapshotter prior to 0.4.2 -
Kubernetes kubernetes-csi external-resizer 0.1 -

II. Public POCs for CVE-2019-11255

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III. Intelligence Information for CVE-2019-11255

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Vendor Advisories for CVE-2019-11255 (5)

Other References for CVE-2019-11255 (2)

IV. Related Vulnerabilities

Same vendor: Kubernetes
Same weakness: CWE-20

V. Comments for CVE-2019-11255

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