CVE-2022-23652 HIGH

CVE-2022-23652: Privilege escalation using hop-by-hop Connection header

Vendor Clastix
Product capsule-proxy
Weakness CWE-287 · Improper authentication
Published February 22, 2022
Last update April 22, 2025
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

capsule-proxy is a reverse proxy for Capsule Operator which provides multi-tenancy in Kubernetes. In versions prior to 0.2.1 an attacker with a proper authentication mechanism may use a malicious `Connection` header to start a privilege escalation attack towards the Kubernetes API Server. This vulnerability allows for an exploit of the `cluster-admin` Role bound to `capsule-proxy`. There are no known workarounds for this issue.

Key dates

02Disclosure timeline

February 22, 2022 CVE published
April 22, 2025 Record updated