CVE-2022-23652— Privilege escalation using hop-by-hop Connection header
Quick assessment
Affected
clastix capsule-proxy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
capsule-proxy是允许克服 Kubernetes API Server 在列出拥有的集群范围资源方面的限制，例如 Namespace、Ingress 和 Storage Classes、Nodes 以及 Capsule 涵盖的其他资源。 capsule-proxy 0.2.1之前版本存在安全漏洞，该漏洞源于软件缺少对于Connection头部的校验，具有正确身份验证机制的攻击者可利用该漏洞可能会使用恶意的“Connection”头启动对Kubernetes API服务器的权限升级攻击。该漏洞允许
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2022-23652
Vulnerability Information
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Vulnerability Title
Privilege escalation using hop-by-hop Connection header
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
capsule-proxy 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
capsule-proxy是允许克服 Kubernetes API Server 在列出拥有的集群范围资源方面的限制，例如 Namespace、Ingress 和 Storage Classes、Nodes 以及 Capsule 涵盖的其他资源。 capsule-proxy 0.2.1之前版本存在安全漏洞，该漏洞源于软件缺少对于Connection头部的校验，具有正确身份验证机制的攻击者可利用该漏洞可能会使用恶意的“Connection”头启动对Kubernetes API服务器的权限升级攻击。该漏洞允许
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| clastix | capsule-proxy | < 0.2.1 | - |
|
II. Public POCs for CVE-2022-23652
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2022-23652 (1)
Vendor Advisories for CVE-2022-23652 (1)
-
https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm x_refsource_CONFIRM
Other References for CVE-2022-23652 (1)
-
https://github.com/clastix/capsule-proxy/issues/188 x_refsource_MISC
IV. Related Vulnerabilities
Same vendor: clastix
Same weakness: CWE-287
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V. Comments for CVE-2022-23652
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