Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to version 1.13.4, when Gateway API is enabled in Cilium, the absence of a check on the namespace in which a ReferenceGrant is created could result in Cilium unintentionally gaining visibility of secrets (including certificates) and services across namespaces. An attacker on an affected cluster can leverage this issue to use cluster secrets that should not be visible to them, or communicate with services that they should not have access to. Gateway API functionality is disabled by default. This vulnerability is fixed in Cilium release 1.13.4. As a workaround, restrict the creation of `ReferenceGrant` resources to admin users by using Kubernetes RBAC.
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Wed, 11 Dec 2024 21:15:00 +0000
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-06-15T19:07:14.624Z
Updated: 2024-12-11T21:11:29.299Z
Reserved: 2023-05-31T13:51:51.172Z
Link: CVE-2023-34242
Vulnrichment
Updated: 2024-08-02T16:01:54.239Z
NVD
Status : Modified
Published: 2023-06-15T20:15:09.473
Modified: 2024-11-21T08:06:50.743
Link: CVE-2023-34242
Redhat
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