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CVE-2023-42794

5.9 · MEDIUM

Incomplete Cleanup vulnerability in Apache Tomcat.

Published Oct 10, 2023CWE-459EPSS 2.30%

Overview

CVE-2023-42794 is a medium-severity vulnerability. It was published on October 10, 2023 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Incomplete Cleanup vulnerability in Apache Tomcat.

The internal fork of Commons FileUpload packaged with Apache Tomcat 9.0.70 through 9.0.80 and 8.5.85 through 8.5.93 included an unreleased,

in progress refactoring that exposed a potential denial of service on

Windows if a web application opened a stream for an uploaded file but

failed to close the stream. The file would never be deleted from disk

creating the possibility of an eventual denial of service due to the

disk being full.

Other, EOL versions may also be affected.

Users are recommended to upgrade to version 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.

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

Reflists.apache.org/thread/vvbr2ms7lockj1hlhz5q3wmxb2mwcw82Refwww.openwall.com/lists/oss-security/2023/10/10/8Reflists.apache.org/thread/vvbr2ms7lockj1hlhz5q3wmxb2mwcw82

How CyberStrike helps

Frequently asked questions

What is CVE-2023-42794?

CVE-2023-42794 is a medium-severity vulnerability. It was published on October 10, 2023 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2023-42794?

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-42794?

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-2023-42794?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-42794 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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