CVE-2022-0759

high

Published 2022-03-26 · Modified 2023-11-08

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CVSS v3

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CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4 NEW

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not yet in upstream

VIR risk

8.0

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).

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
rocky	8	fixed
debian	bookworm	fixed	`4.9.3-1`
debian	bullseye	affected
debian	forky	fixed	`4.9.3-1`
debian	sid	fixed	`4.9.3-1`
debian	trixie	fixed	`4.9.3-1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
RubyGems	kubeclient	`<>= 4.9.3`	`>= 4.9.3`
RubyGems	kubeclient	`<4.9.3`	`4.9.3`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.