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CVE-2023-40175

7.3 · HIGH

Puma is a Ruby/Rack web server built for parallelism.

Published Aug 18, 2023CWE-444EPSS 0.85%

Overview

CVE-2023-40175 is a high-severity vulnerability. It was published on August 18, 2023 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Puma is a Ruby/Rack web server built for parallelism. Prior to versions 6.3.1 and 5.6.7, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies and zero-length Content-Length headers in a way that allowed HTTP request smuggling. Severity of this issue is highly dependent on the nature of the web site using puma is. This could be caused by either incorrect parsing of trailing fields in chunked transfer encoding bodies or by parsing of blank/zero-length Content-Length headers. Both issues have been addressed and this vulnerability has been fixed in versions 6.3.1 and 5.6.7. 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/puma/puma/commit/690155e7d644b80eeef0a6094f9826ee41f1080aGitHubgithub.com/puma/puma/security/advisories/GHSA-68xg-gqqm-vgj8GitHubgithub.com/puma/puma/commit/690155e7d644b80eeef0a6094f9826ee41f1080aGitHubgithub.com/puma/puma/security/advisories/GHSA-68xg-gqqm-vgj8

How CyberStrike helps

Frequently asked questions

What is CVE-2023-40175?

CVE-2023-40175 is a high-severity vulnerability. It was published on August 18, 2023 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2023-40175?

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-40175?

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-2023-40175?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-40175 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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