GitHub Advisoryadvisory · RubyGems

GHSA-69p3-xp37-f692 Improper Certificate Validation in kubeclient

HIGH Published 2022-03-26 Modified 2022-04-08 Official page ↗
Aliases
CVE-2022-0759
Ecosystem
RubyGems
Packages
kubeclient
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-295
Reviewed
2022-03-30

Affected packages

• RubyGems kubeclient: < 4.9.3 → fixed in 4.9.3

Description

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).

Related

Alias · CVE (1)

  • 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… vulnerability

Weakness · CWE (1)

  • CWE-295 Improper Certificate Validation weakness

References