CVE-2022-31080 KubeEdge Websocket Client in package Viaduct: DoS from large response message
An attacker can cause a denial of service via memory exhaustion by sending large WebSocket responses to the KubeEdge viaduct client.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-31080?
CVE-2022-31080 is a medium-severity denial of service vulnerability in kubeedge, published on 11 Jul 2022. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Which versions are affected by CVE-2022-31080?
7 open source packages ship an affected version, including github.com/kubeedge/kubeedge. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/kubeedge/kubeedge Go | All versions | 1.9.4, 1.10.2, 1.11.1 |
github.com/kubeedge/kubeedge Go | All versions | 1.9.4 |
github.com/kubeedge/kubeedge Go | All versions | 1.9.4 |
github.com/kubeedge/kubeedge Go | From 1.10.0 | 1.10.2 |
github.com/kubeedge/kubeedge Go | From 1.10.0 | 1.10.2 |
github.com/kubeedge/kubeedge Go | From 1.11.0 | 1.11.1 |
1 more packages
github.com/kubeedge/kubeedge Go | From 1.11.0 | 1.11.1 |
Products include Linuxfoundation Kubeedge.
How do I fix CVE-2022-31080?
Upgrade github.com/kubeedge/kubeedge to a fixed version for your release line: 1.9.4, 1.10.2 or 1.11.1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-31080 being exploited?
There is no known exploitation of CVE-2022-31080 in the wild and no public exploit code.
Other vulnerabilities in kubeedge
- CVE-2022-31073 KubeEdge Edge ServiceBus module DoS
- CVE-2022-31075 KubeEdge DoS when signing the CSR from EdgeCore
- CVE-2022-31074 KubeEdge Cloud AdmissionController component DoS
- CVE-2022-31078 KubeEdge CloudCore Router memory exhaustion
- CVE-2022-31079 KubeEdge Cloud Stream and Edge Stream DoS from large stream message
Sources
Also known as GHSA-6wvc-6pww-qr4r, GO-2022-0512.