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.

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

EPSS: 0.009 (56.9th percentile) — read the EPSS interpretation.

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.

Affected products

Redhat Kubeclient
N/a Kubeclient — versions 4.9.3

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, 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.