KubeEdge DoS when signing the CSR from EdgeCore
Key facts
- Attack vector
- 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-400.
Summary
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, EdgeCore may be susceptible to a DoS attack on CloudHub if an attacker was to send a well-crafted HTTP request to `/edge.crt`. If an attacker can send a well-crafted HTTP request to CloudHub, and that request has a very large body, that request can crash the HTTP service through a memory exhaustion vector. The request body is being read into memory, and a body that is larger than the available memory can lead to a successful attack. Because the request would have to make it through authorization, only authorized users may perform this attack. The consequence of the exhaustion is that CloudHub will be in denial of service. KubeEdge is affected only when users enable the CloudHub module in the 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 CloudHub switch in the config file `cloudcore.yaml`.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 1.9.4; 1.10.0 to before 1.10.2; = 1.11.0 | 1.9.4, 1.10.2 | Patch available | CNA |
| — | github.com/kubeedge/kubeedge (Go) | 1.11.0 to before 1.11.1 | 1.11.1 | Patch available | GHSA-x3px-2p95-f6jr |
| — | github.com/kubeedge/kubeedge (Go) | 1.10.0 to before 1.10.2 | 1.10.2 | Patch available | GHSA-x3px-2p95-f6jr |
| — | github.com/kubeedge/kubeedge (Go) | before 1.9.4 | 1.9.4 | Patch available | GHSA-x3px-2p95-f6jr |
- kubeedge Vendorbackstage Affected before 1.9.4; 1.10.0 to before 1.10.2; = 1.11.0 Fixed in 1.9.4, 1.10.2 Patch available CNA
- github.com/kubeedge/kubeedge (Go) Vendor— Affected 1.11.0 to before 1.11.1 Fixed in 1.11.1 Patch available GHSA-x3px-2p95-f6jr
- github.com/kubeedge/kubeedge (Go) Vendor— Affected 1.10.0 to before 1.10.2 Fixed in 1.10.2 Patch available GHSA-x3px-2p95-f6jr
- github.com/kubeedge/kubeedge (Go) Vendor— Affected before 1.9.4 Fixed in 1.9.4 Patch available GHSA-x3px-2p95-f6jr
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:linuxfoundation:kubeedge:*:*:*:*:*:*:*:* | before 1.9.4; 1.10.0 to before 1.10.2; 1.11.0 to before 1.11.1 | Vulnerable | backstage |
- cpe:2.3:a:linuxfoundation:kubeedge:*:*:*:*:*:*:*:* Versions before 1.9.4; 1.10.0 to before 1.10.2; 1.11.0 to before 1.11.1 Vulnerable ·backstage
Remediation
- Fix · CNA kubeedge (kubeedge) Fixed in 1.9.4, 1.10.2
- Fix · GHSA-x3px-2p95-f6jr github.com/kubeedge/kubeedge (Go) Fixed in 1.11.1 Advisory →
- Fix · GHSA-x3px-2p95-f6jr github.com/kubeedge/kubeedge (Go) Fixed in 1.10.2 Advisory →
- Fix · GHSA-x3px-2p95-f6jr github.com/kubeedge/kubeedge (Go) Fixed in 1.9.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-31075
- 2026-10-03 Alias added: GHSA-x3px-2p95-f6jr
References
More backstage Kubeedge vulnerabilities
- TI-2022-13117 KubeEdge Edge ServiceBus module DoS CVSS 3.1HIGH 7.5
- TI-2022-13120 Malicious Message can crash CloudCore in KubeEdge CVSS 3.1MEDIUM 5.7
- 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-2022-31075 · CVE Program
- CVE-2022-31075 · NVD
- FIRST EPSS
- GHSA-x3px-2p95-f6jr · GitHub Advisory Database · CC BY 4.0
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