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CVE-2023-28114

4.8 · MEDIUM

`cilium-cli` is the command line interface to install, manage, and troubleshoot Kubernetes clusters running Cilium.

Published Mar 22, 2023CWE-280EPSS 0.19%

Overview

CVE-2023-28114 is a medium-severity vulnerability. It was published on March 22, 2023 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

`cilium-cli` is the command line interface to install, manage, and troubleshoot Kubernetes clusters running Cilium. Prior to version 0.13.2,`cilium-cli`, when used to configure cluster mesh functionality, can remove the enforcement of user permissions on the `etcd` store used to mirror local cluster information to remote clusters. Users who have set up cluster meshes using the Cilium Helm chart are not affected by this issue.

Due to an incorrect mount point specification, the settings specified by the `initContainer` that configures `etcd` users and their permissions are overwritten when using `cilium-cli` to configure a cluster mesh. An attacker who has already gained access to a valid key and certificate for an `etcd` cluster compromised in this manner could then modify state in that `etcd` cluster.

This issue is patched in `cilium-cli` 0.13.2. As a workaround, one may use Cilium's Helm charts to create their cluster.

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

Refartifacthub.io/packages/helm/cilium/ciliumGitHubgithub.com/cilium/cilium-cli/commit/fb1427025764e1eebc4a7710d902c4f22cae2610GitHubgithub.com/cilium/cilium-cli/releases/tag/v0.13.2GitHubgithub.com/cilium/cilium-cli/security/advisories/GHSA-6f27-3p6c-p5jcRefartifacthub.io/packages/helm/cilium/ciliumGitHubgithub.com/cilium/cilium-cli/commit/fb1427025764e1eebc4a7710d902c4f22cae2610GitHubgithub.com/cilium/cilium-cli/releases/tag/v0.13.2GitHubgithub.com/cilium/cilium-cli/security/advisories/GHSA-6f27-3p6c-p5jc

How CyberStrike helps

Frequently asked questions

What is CVE-2023-28114?

CVE-2023-28114 is a medium-severity vulnerability. It was published on March 22, 2023 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2023-28114?

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-28114?

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-2023-28114?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-28114 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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