Improper input validation in Kubernetes
CVE-2022-3294
Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Kubernetes — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- groups.google.com/g/kubernetes-security-announce/c/VyPOxF7CIbA (Mailing List, Third Party Advisory)
- github.com/kubernetes/kubernetes/issues/113757 (Patch, Vendor Advisory)
- security.netapp.com/advisory/ntap-20230505-0007/
Frequently asked questions
- What is CVE-2022-3294?
- CVE-2022-3294 is a medium-severity vulnerability in Kubernetes, classified under Improper Input Validation. CVSS score: 6.6/10. Published 2023-03-01.
- How severe is CVE-2022-3294?
- Medium severity. CVSS v3 base score is 6.6 out of 10.
- Is CVE-2022-3294 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.