CVE-2022-31080: KubeEdge Websocket Client in package Viaduct: DoS from large response message

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-11 · updated 2026-06-17
Weakness: CWE-400

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, a large response received by the viaduct WSClient can cause a DoS from memory exhaustion. The entire body of the response is being read into memory which could allow an attacker to send a request that returns a response with a large body. The consequence of the exhaustion is that the process which invokes a WSClient will be in a denial of service. The software is affected If users who are authenticated to the edge side connect to `cloudhub` from the edge side through WebSocket protocol. This bug has been fixed in Kubeedge 1.11.1, 1.10.2, and 1.9.4. There are currently no known workarounds.

Affected products

kubeedge: before 1.9.4; from 1.10.0 before 1.10.2; from 1.11.0 before 1.11.1 — fixed in 1.10.2, 1.11.1, 1.9.4

How to fix

Upgrade to a fixed version: kubeedge 1.10.2, 1.11.1, 1.9.4. Check the vendor advisory for mitigations.

References

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