Vulnerability Description
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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cilium | Cilium | < 1.13.4 |
Related Weaknesses (CWE)
References
- https://github.com/cilium/cilium/releases/tag/v1.13.4Release Notes
- https://github.com/cilium/cilium/security/advisories/GHSA-r7wr-4w5q-55m6Third Party Advisory
- https://github.com/cilium/cilium/releases/tag/v1.13.4Release Notes
- https://github.com/cilium/cilium/security/advisories/GHSA-r7wr-4w5q-55m6Third Party Advisory
FAQ
What is CVE-2023-34242?
CVE-2023-34242 is a vulnerability with a CVSS score of 3.4 (LOW). 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 wh...
How severe is CVE-2023-34242?
CVE-2023-34242 has been rated LOW with a CVSS base score of 3.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-34242?
Check the references section above for vendor advisories and patch information. Affected products include: Cilium Cilium.