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CVE-2021-25740— Holes in EndpointSlice Validation Enable Host Network Hijack

Quick assessment

Affected
Kubernetes Kubernetes
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.

Red Hat OpenShift Container Platform是美国红帽（Red Hat）公司的一套可帮助企业在物理、虚拟和公共云基础架构之间开发、部署和管理现有基于容器的应用程序的应用平台。 Red Hat OpenShift Container Platform 存在安全漏洞

CVSS 3.1 · Low EPSS 1.95% · P80

Possible ATT&CK Techniques 1 AI

T1090 · Proxy

Affected Version Matrix 1

VendorProduct Version RangeStatus
Kubernetes Kubernetes < * affected
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I. Basic Information for CVE-2021-25740

Vulnerability Information
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Vulnerability Title
Holes in EndpointSlice Validation Enable Host Network Hijack
Source: CVE Program / CVE List V5
Vulnerability Description
A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未有动机的代理或中间人(混淆代理)
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat OpenShift Container Platform 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat OpenShift Container Platform是美国红帽（Red Hat）公司的一套可帮助企业在物理、虚拟和公共云基础架构之间开发、部署和管理现有基于容器的应用程序的应用平台。 Red Hat OpenShift Container Platform 存在安全漏洞
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 0 ~ * -

II. Public POCs for CVE-2021-25740

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III. Intelligence Information for CVE-2021-25740

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Vendor Advisories for CVE-2021-25740 (1)

Security Blog Posts for CVE-2021-25740 (1)

Other References for CVE-2021-25740 (2)

Same Patch Batch · Kubernetes · 2021-09-20 · 3 CVEs total

CVE-2021-25741 8.8 HIGH Symlink Exchange Can Allow Host Filesystem Access
CVE-2020-8561 4.1 MEDIUM Webhook redirect in kube-apiserver

IV. Related Vulnerabilities

Same product: Kubernetes
Same vendor: Kubernetes
Same weakness: CWE-441

V. Comments for CVE-2021-25740

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