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CVE-2023-23934

2.6 · LOW

Werkzeug is a comprehensive WSGI web application library.

Published Feb 14, 2023CWE-20EPSS 0.51%

Overview

CVE-2023-23934 is a low-severity vulnerability. It was published on February 14, 2023 and has a CVSS 3.1 base score of 2.6 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.6, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Werkzeug is a comprehensive WSGI web application library. Browsers may allow "nameless" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3.

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/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028GitHubgithub.com/pallets/werkzeug/releases/tag/2.2.3GitHubgithub.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22qRefsecurity.netapp.com/advisory/ntap-20230818-0003/Refwww.debian.org/security/2023/dsa-5470GitHubgithub.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028GitHubgithub.com/pallets/werkzeug/releases/tag/2.2.3GitHubgithub.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22qRefsecurity.netapp.com/advisory/ntap-20230818-0003/Refwww.debian.org/security/2023/dsa-5470

How CyberStrike helps

Frequently asked questions

What is CVE-2023-23934?

CVE-2023-23934 is a low-severity vulnerability. It was published on February 14, 2023 and has a CVSS 3.1 base score of 2.6 (LOW).

How severe is CVE-2023-23934?

This vulnerability has a CVSS 3.1 base score of 2.6, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-23934?

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-2023-23934?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-23934 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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