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CVE-2024-40632

3.7 · LOW

Linkerd is an open source, ultralight, security-first service mesh for Kubernetes.

Published Jul 15, 2024CWE-918EPSS 0.44%

Overview

CVE-2024-40632 is a low-severity vulnerability. It was published on July 15, 2024 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Linkerd is an open source, ultralight, security-first service mesh for Kubernetes. In affected versions when the application being run by linkerd is susceptible to SSRF, an attacker could potentially trigger a denial-of-service (DoS) attack by making requests to localhost:4191/shutdown. Linkerd could introduce an optional environment variable to control a token that must be passed as a header. Linkerd should reject shutdown requests that do not include this header. This issue has been addressed in release version edge-24.6.2 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

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/linkerd/linkerd2-proxy/blob/46957de49f25fd4661af7b7c52659148f4d6dd27/linkerd/app/admin/src/server.rsGitHubgithub.com/linkerd/linkerd2/commit/35fb2d6d11ef6520ae516dd717790529f85224faGitHubgithub.com/linkerd/linkerd2/security/advisories/GHSA-6v94-gj6x-jqj7GitHubgithub.com/linkerd/linkerd2-proxy/blob/46957de49f25fd4661af7b7c52659148f4d6dd27/linkerd/app/admin/src/server.rsGitHubgithub.com/linkerd/linkerd2/commit/35fb2d6d11ef6520ae516dd717790529f85224faGitHubgithub.com/linkerd/linkerd2/security/advisories/GHSA-6v94-gj6x-jqj7

How CyberStrike helps

Frequently asked questions

What is CVE-2024-40632?

CVE-2024-40632 is a low-severity vulnerability. It was published on July 15, 2024 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2024-40632?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-40632?

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-2024-40632?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-40632 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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