CVE-2022-23652

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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 6.5 MEDIUM

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8	Patch Third Party Advisory
https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm	Third Party Advisory
https://github.com/clastix/capsule-proxy/issues/188	Exploit Issue Tracking Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:clastix:capsule-proxy:*:*:*:*:*:*:*:*

Information

Published : 2022-02-22 12:15

Updated : 2022-03-01 12:08

NVD link : CVE-2022-23652

Mitre link : CVE-2022-23652

JSON object : View

CWE

CWE-287

Improper Authentication

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Products Affected

clastix

capsule-proxy

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