Malicious Message can crash CloudCore in KubeEdge
Key facts
- Attack vector
- Adjacent network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-476.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| backstage | kubeedge | before 1.9.3; 1.10.0 to before 1.10.1 | 1.9.3, 1.10.1 | Patch available | CNA |
| — | github.com/kubeedge/kubeedge (Go) | 1.10.0 to before 1.10.1 | 1.10.1 | Patch available | GHSA-8f4f-v9x5-cg6j |
| — | github.com/kubeedge/kubeedge (Go) | before 1.9.3 | 1.9.3 | Patch available | GHSA-8f4f-v9x5-cg6j |
- kubeedge Vendorbackstage Affected before 1.9.3; 1.10.0 to before 1.10.1 Fixed in 1.9.3, 1.10.1 Patch available CNA
- github.com/kubeedge/kubeedge (Go) Vendor— Affected 1.10.0 to before 1.10.1 Fixed in 1.10.1 Patch available GHSA-8f4f-v9x5-cg6j
- github.com/kubeedge/kubeedge (Go) Vendor— Affected before 1.9.3 Fixed in 1.9.3 Patch available GHSA-8f4f-v9x5-cg6j
Remediation
- Fix · CNA kubeedge (kubeedge) Fixed in 1.9.3, 1.10.1
- Fix · GHSA-8f4f-v9x5-cg6j github.com/kubeedge/kubeedge (Go) Fixed in 1.10.1 Advisory →
- Fix · GHSA-8f4f-v9x5-cg6j github.com/kubeedge/kubeedge (Go) Fixed in 1.9.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-31076
- 2026-10-03 Alias added: GHSA-8f4f-v9x5-cg6j
References
More backstage Kubeedge vulnerabilities
- TI-2022-13117 KubeEdge Edge ServiceBus module DoS CVSS 3.1HIGH 7.5
- TI-2022-13119 KubeEdge DoS when signing the CSR from EdgeCore CVSS 3.1MEDIUM 6.5
- TI-2022-13124 KubeEdge Websocket Client in package Viaduct: DoS from large response message CVSS 3.1MEDIUM 6.5
- TI-2022-13123 KubeEdge Cloud Stream and Edge Stream DoS from large stream message CVSS 3.1MEDIUM 6.5
- TI-2022-13122 KubeEdge CloudCore Router memory exhaustion CVSS 3.1MEDIUM 6.5
- TI-2022-13118 KubeEdge Cloud AdmissionController component DoS CVSS 3.1MEDIUM 6.5
Sources
- CVE-2022-31076 · CVE Program
- CVE-2022-31076 · NVD
- FIRST EPSS
- GHSA-8f4f-v9x5-cg6j · GitHub Advisory Database · CC BY 4.0
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