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CVE-2022-31078— KubeEdge CloudCore Router memory exhaustion

Quick assessment

Affected
kubeedge kubeedge
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.

KubeEdge是KubeEdge开源的一个 Kubernetes 原生边缘计算框架。基于 Kubernetes 构建，并将本机容器化应用编排和设备管理扩展到边缘主机。 KubeEdge 1.11.1之前版本、1.10.2之前版本 和 1.9.4之前版本存在资源管理错误漏洞，该漏洞源于CloudCore 路由器不对 REST 处理程序发出的请求的响应大小施加限制，攻击者利用该漏洞可以发送大消息来耗尽内存并导致 DoS。

CVSS 4.4 · Medium EPSS 0.67% · P49
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I. Basic Information for CVE-2022-31078

Vulnerability Information
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Vulnerability Title
KubeEdge CloudCore Router memory exhaustion
Source: CVE Program / CVE List V5
Vulnerability Description
KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. Prior to versions 1.11.1, 1.10.2, and 1.9.4, the CloudCore Router does not impose a limit on the size of responses to requests made by the REST handler. An attacker could use this weakness to make a request that will return an HTTP response with a large body and cause DoS of CloudCore. In the HTTP Handler API, the rest handler makes a request to a pre-specified handle. The handle will return an HTTP response that is then read into memory. The consequence of the exhaustion is that CloudCore will be in a denial of service. Only an authenticated user of the cloud can make an attack. It will be affected only when users enable `router` module in the config file `cloudcore.yaml`. This bug has been fixed in Kubeedge 1.11.1, 1.10.2, and 1.9.4. As a workaround, disable the router switch in the config file `cloudcore.yaml`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
KubeEdge 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
KubeEdge是KubeEdge开源的一个 Kubernetes 原生边缘计算框架。基于 Kubernetes 构建，并将本机容器化应用编排和设备管理扩展到边缘主机。 KubeEdge 1.11.1之前版本、1.10.2之前版本 和 1.9.4之前版本存在资源管理错误漏洞，该漏洞源于CloudCore 路由器不对 REST 处理程序发出的请求的响应大小施加限制，攻击者利用该漏洞可以发送大消息来耗尽内存并导致 DoS。
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
kubeedge kubeedge < 1.9.4 -

II. Public POCs for CVE-2022-31078

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III. Intelligence Information for CVE-2022-31078

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Vendor Advisories for CVE-2022-31078 (1)

Same Patch Batch · kubeedge · 2022-07-11 · 6 CVEs total

CVE-2022-31073 6.5 MEDIUM KubeEdge Edge ServiceBus module DoS
CVE-2022-31075 4.9 MEDIUM KubeEdge DoS when signing the CSR from EdgeCore
CVE-2022-31074 4.5 MEDIUM KubeEdge Cloud AdmissionController component DoS
CVE-2022-31079 4.4 MEDIUM KubeEdge Cloud Stream and Edge Stream DoS from large stream message
CVE-2022-31080 4.4 MEDIUM KubeEdge Websocket Client in package Viaduct: DoS from large response message

IV. Related Vulnerabilities

Same product: kubeedge
Same vendor: kubeedge
Same weakness: CWE-400

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