Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1790670439 before * |
| Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1790670231 before * |
| Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1790670243 before * |
| Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1790670912 before * |
| Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1788023916 before * |
| Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1788023940 before * |
| Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1788105072 before * |
| Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1788073481 before * |
CWE
CWE-345
References
- https://access.redhat.com/errata/RHSA-2026:63016
- https://access.redhat.com/errata/RHSA-2026:85227
- https://access.redhat.com/security/cve/CVE-2026-66787
- https://bugzilla.redhat.com/show_bug.cgi?id=2507532
ADP enrichment
No English description supplied.
No references supplied.