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CVE-2019-11248— Kubernetes kubelet exposes /debug/pprof info on healthz port

Quick assessment

Affected
Kubernetes Kubernetes
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google Kubernetes是美国谷歌（Google）公司的一套开源的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。 Google Kubernetes中存在信息泄露漏洞。该漏洞源于网络系统或产品在运行过程中存在配置等错误。未授权的攻击者可利用漏洞获取受影响组件敏感信息。以下产品及版本受到影响：Google Kubernetes 1.15.0之前版本，1.14.4之前版本，1.13.8之前版本，1.12.10之前版本。

AI Predicted 5.3 Difficulty: Moderate EPSS 75.06% · P99

Public Exploits 1

Nuclei · 1 CVE-2019-11248.yaml [template]
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I. Basic Information for CVE-2019-11248

Vulnerability Information
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Vulnerability Title
Kubernetes kubelet exposes /debug/pprof info on healthz port
Source: CVE Program / CVE List V5
Vulnerability Description
The debugging endpoint /debug/pprof is exposed over the unauthenticated Kubelet healthz port. The go pprof endpoint is exposed over the Kubelet's healthz port. This debugging endpoint can potentially leak sensitive information such as internal Kubelet memory addresses and configuration, or for limited denial of service. Versions prior to 1.15.0, 1.14.4, 1.13.8, and 1.12.10 are affected. The issue is of medium severity, but not exposed by the default configuration.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未保护的主要通道
Source: CVE Program / CVE List V5
Vulnerability Title
Google Kubernetes 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Kubernetes是美国谷歌（Google）公司的一套开源的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。 Google Kubernetes中存在信息泄露漏洞。该漏洞源于网络系统或产品在运行过程中存在配置等错误。未授权的攻击者可利用漏洞获取受影响组件敏感信息。以下产品及版本受到影响：Google Kubernetes 1.15.0之前版本，1.14.4之前版本，1.13.8之前版本，1.12.10之前版本。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Kubernetes Kubernetes prior to 1.12.10 -

II. Public POCs for CVE-2019-11248

# POC Description Source Link Shenlong Link
1 POC for CVE-2019-11248, remote code execution (RCE) https://github.com/nop2nop/cve-2019-11248 POC Details
2 POC for CVE-2019-11248, remote code execution (RCE) https://github.com/masm3264/poc-CVE-2019-11248 POC Details
3 None https://github.com/nod3jzzz/poc-CVE-2019-11248 POC Details
4 None https://github.com/g1thubb001/poc-CVE-2019-11248 POC Details
5 cve-2019-11248 cve-2020-1938 https://github.com/bash3rt3am/poc-cve POC Details
6 The debugging endpoint /debug/pprof is exposed over the unauthenticated Kubelet healthz port. This debugging endpoint can potentially leak sensitive information such as internal Kubelet memory addresses and configuration, or for limited denial of service. Versions prior to 1.15.0, 1.14.4, 1.13.8, and 1.12.10 are affected. The issue is of medium severity, but not exposed by the default configuration. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2019/CVE-2019-11248.yaml POC Details
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III. Intelligence Information for CVE-2019-11248

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Vendor Advisories for CVE-2019-11248 (1)

Other References for CVE-2019-11248 (2)

Same Patch Batch · Kubernetes · 2019-08-29 · 6 CVEs total

CVE-2019-11245 kubelet-started container uid changes to root after first restart or if image is already p
CVE-2019-11246 kubectl cp allows symlink directory traversal
CVE-2019-11247 Kubernetes kube-apiserver allows access to custom resources via wrong scope
CVE-2019-11249 kubectl cp allows symlink directory traversal
CVE-2019-11250 Kubernetes client-go logs authorization headers at debug verbosity levels

IV. Related Vulnerabilities

Same product: Kubernetes
Same vendor: Kubernetes
Same weakness: CWE-419

V. Comments for CVE-2019-11248

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