CVE-2025-24813 PoC — Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT

Title:Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT (CVE-2025-24813)
Description:Path Equivalence: 'file.Name' (Internal Dot) leading to Remote Code Execution and/or Information disclosure and/or malicious content added to uploaded files via write enabled Default Servlet in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.2, from 10.1.0-M1 through 10.1.34, from 9.0.0.M1 through 9.0.98. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected. If all of the following were true, a malicious user was able to view security sensitive files and/or inject content into those files: - writes enabled for the default servlet (disabled by default) - support for partial PUT (enabled by default) - a target URL for security sensitive uploads that was a sub-directory of a target URL for public uploads - attacker knowledge of the names of security sensitive files being uploaded - the security sensitive files also being uploaded via partial PUT If all of the following were true, a malicious user was able to perform remote code execution: - writes enabled for the default servlet (disabled by default) - support for partial PUT (enabled by default) - application was using Tomcat's file based session persistence with the default storage location - application included a library that may be leveraged in a deserialization attack Users are recommended to upgrade to version 11.0.3, 10.1.35 or 9.0.99, which fixes the issue.

This repository contains a shell script based POC on Apache Tomcat CVE-2025-24813.  It allow you to easily test the vulnerability on any version of Apache Tomcat

# Testing any tomcat version to see whether that version is vulnerable to CVE-2025-24813
This POC allow you to test any tomcat version to verify whether that version is vulnerable to CVE-2025-24813 under the vulnerable conditions, in Unix environments (tested on a `Ubuntu` machine).

1. Modify `tomcat_version` variable in `01-prepare-environment.sh` file to the targeted tomcat version
   ```
   #!/bin/bash
   tomcat_version="10.1.20"
   ```
2. Prepare the environment: Run the file `01-prepare-environment.sh`
3. Test the POC: Run the file `02-test.sh`

Please read https://digitaldefenders.substack.com/p/cve-2025-24813-one-guard-lies-one for a more detailed explanation on this vulnerability.

 [4.0K]  /data/pocs/28eec393f685de88c407d539094a62bf25edab24
├── [1.7K]  01-prepare-environment.sh
├── [1.0K]  02-test.sh
└── [ 699]  README.md

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