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CVE-2023-34242

3.4 · LOW

Cilium is a networking, observability, and security solution with an eBPF-based dataplane.

Published Jun 15, 2023CWE-200EPSS 0.30%

Overview

CVE-2023-34242 is a low-severity vulnerability. It was published on June 15, 2023 and has a CVSS 3.1 base score of 3.4 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.4, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/cilium/cilium/releases/tag/v1.13.4GitHubgithub.com/cilium/cilium/security/advisories/GHSA-r7wr-4w5q-55m6GitHubgithub.com/cilium/cilium/releases/tag/v1.13.4GitHubgithub.com/cilium/cilium/security/advisories/GHSA-r7wr-4w5q-55m6

How CyberStrike helps

Frequently asked questions

What is CVE-2023-34242?

CVE-2023-34242 is a low-severity vulnerability. It was published on June 15, 2023 and has a CVSS 3.1 base score of 3.4 (LOW).

How severe is CVE-2023-34242?

This vulnerability has a CVSS 3.1 base score of 3.4, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-34242?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-34242?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-34242 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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