CVE-2023-34242
Last modified
CVE-2023-34242 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cilium | Cilium | < 1.13.4 |
References
- https://github.com/cilium/cilium/security/advisories/GHSA-r7wr-4w5q-55m6Third Party Advisory
- https://github.com/cilium/cilium/security/advisories/GHSA-r7wr-4w5q-55m6Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-34242?
How severe is CVE-2023-34242?
How do I fix CVE-2023-34242?
Are you affected by CVE-2023-34242?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST