CVE-2022-23652

Public Exploit
Privilege escalation using hop-by-hop Connection header

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.37%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: clastix capsule-proxy
Published at:
Updated at:

References

Link Tags
https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm third party advisory
https://github.com/clastix/capsule-proxy/issues/188 third party advisory issue tracking exploit
https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-23652?
CVE-2022-23652 has been scored as a high severity vulnerability.
How to fix CVE-2022-23652?
To fix CVE-2022-23652, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-23652 being actively exploited in the wild?
It is possible that CVE-2022-23652 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-23652?
CVE-2022-23652 affects clastix capsule-proxy.
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