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CVE-2022-0759

Published: 25 March 2022

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).

Priority

Medium

Cvss 3 Severity Score

8.1

Score breakdown

Status

Package Release Status
ruby-kubeclient
Launchpad, Ubuntu, Debian
impish Ignored
(end of life)
jammy Needs triage

upstream Needs triage

kinetic Ignored
(end of life, was needs-triage)
xenial Ignored
(end of standard support)
bionic Needs triage

focal Needs triage

trusty Ignored
(end of standard support)
mantic Needs triage

lunar Ignored
(end of life, was needs-triage)

Severity score breakdown

Parameter Value
Base score 8.1
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H