Description
A flaw was found in the submariner-operator component. The `submariner-k8s-broker-cluster` Role, which is assigned to joined clusters, possesses excessive permissions. This allows a compromised cluster to alter network configurations, specifically by overwriting other clusters' endpoint information. Consequently, an attacker can redirect inter-cluster tunnel traffic, enabling a Man-in-the-Middle (MITM) attack across the entire cluster mesh.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11
Default version status: affected
1789135606 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13
Default version status: affected
1789131397 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14
Default version status: affected
1789136328 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15
Default version status: affected
1789136327 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16
Default version status: affected
1789136320 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16
Default version status: affected
1787854416 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16
Default version status: affected
1790670243 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16
Default version status: affected
1790670912 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17
Default version status: affected
1788105072 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17
Default version status: affected
1788073481 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17
Default version status: affected
1788572527 to < *unaffected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2
Default version status: affected
References
- https://access.redhat.com/errata/RHSA-2026:63016 ↗
- https://access.redhat.com/errata/RHSA-2026:67538 ↗
- https://access.redhat.com/errata/RHSA-2026:67539 ↗
- https://access.redhat.com/errata/RHSA-2026:67540 ↗
- https://access.redhat.com/errata/RHSA-2026:67541 ↗
- https://access.redhat.com/errata/RHSA-2026:67542 ↗
- https://access.redhat.com/errata/RHSA-2026:67543 ↗
- https://access.redhat.com/errata/RHSA-2026:72880 ↗
- https://access.redhat.com/errata/RHSA-2026:85227 ↗
- https://access.redhat.com/security/cve/CVE-2026-66780 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2507524 ↗