VDB-241709 · CVE-2023-42794 · Nessus 239817

Apache Tomcat up to 8.5.93/9.0.80 on Windows Commons FileUpload denial of service

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4.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Apache Tomcat up to 8.5.93/9.0.80 on Windows. The affected element is an unknown function of the component Commons FileUpload. The manipulation leads to denial of service. This vulnerability is traded as CVE-2023-42794. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache Tomcat up to 8.5.93/9.0.80 on Windows (Application Server Software) and classified as problematic. This issue affects some unknown processing of the component Commons FileUpload. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

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.

The weakness was shared 10/10/2023. The advisory is shared at lists.apache.org. The identification of this vulnerability is CVE-2023-42794 since 09/14/2023. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 239817 (TencentOS Server 3: tomcat (TSSA-2024:0045)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.5.94 or 9.0.81 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (239817). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Application Server Software

Vendor

Apache

Name

Tomcat

Version

License

open-source

Website

Vendor: https://www.apache.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 239817
Nessus Name: TencentOS Server 3: tomcat (TSSA-2024:0045)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Tomcat 8.5.94/9.0.81

Timelineinfo

09/14/2023 🔍
10/10/2023 +26 days 🔍
10/10/2023 +0 days 🔍
10/29/2025 +750 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Status: Confirmed

CVE: CVE-2023-42794 (🔍)
GCVE (CVE): GCVE-0-2023-42794
GCVE (VulDB): GCVE-100-241709

Entryinfo

Created: 10/10/2023 16:50
Updated: 10/29/2025 13:27
Changes: 10/10/2023 16:50 (41), 10/28/2023 14:53 (1), 10/28/2023 14:54 (11), 06/20/2025 04:27 (17), 10/29/2025 13:27 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.