Windows kube-proxy LoadBalancer contention (Kubernetes Kubernetes)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.92 % · percentile 60 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- kubernetes
- NVD status
- Modified
Description
Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected.
Weaknesses (CWE)
- CWE-114 — Process Control
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.8 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N | kubernetes |
| CVSS 3.1 | MEDIUM 5.8 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N | NVD · jordan@liggitt.net (Secondary) |
| CVSS 3.1 | MEDIUM 6.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-35c7-w35f-xwgh — Kube-proxy may unintentionally forward traffic
- GO-2023-2159 — Kube-proxy may unintentionally forward traffic in k8s.io/kubernetes
European references
- ENISA EUVD · EUVD-2023-2624
- GCVE · GCVE-0-2021-25736
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2022-AVI-591 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*≥ 1.18.0 < 1.18.18cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*≥ 1.19.0 < 1.19.10cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*≥ 1.20.0 < 1.20.6
Affected products
| Product | Versions |
|---|---|
| Kubernetes · Kubernetes | affected 0 ≤ v1.20.5 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |