NULL pointer dereference in Kubeedge
CVE-2022-31076
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (47.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Kubeedge — versions < 1.9.3, >= 1.10.0, < 1.10.1
- Linuxfoundation Kubeedge — versions 1.10.0
Weakness classification (CWE)
References
- github.com/kubeedge/kubeedge/security/advisories/GHSA-8f4f-v9x5-cg6j (Exploit, Third Party Advisory)
- github.com/kubeedge/kubeedge/pull/3899/commits/5d60ae9eabd6b6b7afe38758e19bbe81… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-31076?
- CVE-2022-31076 is a medium-severity vulnerability in Kubeedge, classified under NULL Pointer Dereference. CVSS score: 4.2/10. Published 2022-06-27.
- How severe is CVE-2022-31076?
- Medium severity. CVSS v3 base score is 4.2 out of 10.