CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2022-23652
High (8.8) in clastix capsule-proxy. EPSS 1.4% chance of exploitation in the next 30 days. Fixed in github.com/clastix/capsule-proxy 0.2.1.
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.
Severity
- EPSS
- 1.4% chance of exploitation in the next 30 days; higher than 72% of CVEs (scores of 2026-10-31)
- CWE
- CWE-287
- Published
- Modified
- Record from
- the NVD, synced
Affected
- clastix:capsule-proxy
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-9cwv-cppx-mqjm | Go | github.com/clastix/capsule-proxy | <0.2.1 | 0.2.1 |
| GO-2022-0329 | Go | github.com/clastix/capsule-proxy | <0.2.1 | 0.2.1 |
References
- https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8
- https://github.com/clastix/capsule-proxy/issues/188
- https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm
- https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8
- https://github.com/clastix/capsule-proxy/issues/188