Vulnerability in Red Hat Kubeclient
CVE-2022-0759
A flaw was found in all versions of kubeclient up to (but not including) v4.9.3, the Ruby client for Kubernetes REST API, in the way it parsed kubeconfig files. When the kubeconfig file does not configure custom CA to verify certs, kubeclient ends up accepting any certificate (it wrongly returns VERIFY_NONE). Ruby applications that leverage kubeclient to parse kubeconfig files are susceptible to Man-in-the-middle attacks (MITM).
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Red Hat Kubeclient
- Kubeclient — versions 4.9.3
Weakness classification (CWE)
References
- github.com/ManageIQ/kubeclient/issues/554 (Patch, Third Party Advisory, Issue Tracking)
- github.com/ManageIQ/kubeclient/issues/555 (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2022-0759?
- CVE-2022-0759 is a high-severity vulnerability in Red Hat Kubeclient, classified under Improper Certificate Validation. CVSS score: 8.1/10. Published 2022-03-25.
- How severe is CVE-2022-0759?
- High severity. CVSS v3 base score is 8.1 out of 10.