CVE-2022-31076 Malicious Message can crash CloudCore in KubeEdge
An authenticated local attacker can crash CloudCore via a nil-pointer dereference in the UDS Server when the unixsocket switch is enabled.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-31076?
CVE-2022-31076 is a medium-severity vulnerability in kubeedge, published on 27 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KubeEdge is built upon Kubernetes and extends native containerized application orchestration and device management to hosts at the Edge. In affected versions a malicious message can crash CloudCore by triggering a nil-pointer dereference in the UDS Server. Since the UDS Server only communicates with the CSI Driver on the cloud side, the attack is limited to the local host network. As such, an attacker would already need to be an authenticated user of the Cloud. Additionally it will be affected only when users turn on the unixsocket switch in the config file cloudcore.yaml. This bug has been fixed in Kubeedge 1.11.0, 1.10.1, and 1.9.3. Users should update to these versions to resolve the issue. Users unable to upgrade should sisable the unixsocket switch of CloudHub in the config file cloudcore.yaml.
Weakness: CWE-476
Which versions are affected by CVE-2022-31076?
5 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 | 1.9.3, 1.10.1 |
github.com/kubeedge/kubeedge Go | All versions | 1.9.3 |
github.com/kubeedge/kubeedge Go | All versions | 1.9.3 |
github.com/kubeedge/kubeedge Go | From 1.10.0 | 1.10.1 |
github.com/kubeedge/kubeedge Go | From 1.10.0 | 1.10.1 |
Products include Linuxfoundation Kubeedge.
How do I fix CVE-2022-31076?
Upgrade github.com/kubeedge/kubeedge to a fixed version for your release line: 1.9.3 or 1.10.1.
Is CVE-2022-31076 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-31076 exists.
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-8f4f-v9x5-cg6j, GO-2022-0500.