Lighthouse: lighthouse: cross-cluster dns spoofing via unvalidated endpointslice ip addresses (Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.30 % · percentile 23 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Awaiting Analysis
Description
A flaw was found in the lighthouse component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability stems from insufficient validation of advertised IP addresses within EndpointSlice objects. A compromised spoke cluster can exploit this by creating EndpointSlices with attacker-controlled IP addresses, causing other clusters' lighthouse DNS to redirect legitimate service traffic to malicious endpoints. This enables a remote attacker to conduct transparent Man-in-the-Middle (MITM) attacks on cross-cluster service communications, potentially leading to unauthorized information disclosure and data manipulation.
Weaknesses (CWE)
- CWE-345 — Insufficient Verification of Data Authenticity
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N | redhat |
| CVSS 3.1 | HIGH 8.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-63533
- GCVE · GCVE-0-2026-66787
Affected products
| Product | Versions |
|---|---|
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1790670439 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1790670231 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1790670243 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1790670912 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1788023916 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1788023940 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1788105072 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1788073481 < * |
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 |
| 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 |