CVE-2022-31078

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CVE-2022-31078

Summary: KubeEdge CloudCore Router memory exhaustion

Details: 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, the CloudCore Router does not impose a limit on the size of responses to requests made by the REST handler. An attacker could use this weakness to make a request that will return an HTTP response with a large body and cause DoS of CloudCore. In the HTTP Handler API, the rest handler makes a request to a pre-specified handle. The handle will return an HTTP response that is then read into memory. The consequence of the exhaustion is that CloudCore will be in a denial of service. Only an authenticated user of the cloud can make an attack. It will be affected only when users enable `router` module in the config 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 router switch in the config file `cloudcore.yaml`.

References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31078.json, https://github.com/kubeedge/kubeedge/security/advisories/GHSA-qpx3-9565-5xwm, https://nvd.nist.gov/vuln/detail/CVE-2022-31078