CVE-2023-26048 PoC — OutOfMemoryError for large multipart without filename in Eclipse Jetty

Source

https://github.com/Trinadh465/jetty_9.4.31_CVE-2023-26048

Associated Vulnerability

Title: OutOfMemoryError for large multipart without filename in Eclipse Jetty (CVE-2023-26048)
Description:Jetty is a java based web server and servlet engine. In affected versions servlets with multipart support (e.g. annotated with `@MultipartConfig`) that call `HttpServletRequest.getParameter()` or `HttpServletRequest.getParts()` may cause `OutOfMemoryError` when the client sends a multipart request with a part that has a name but no filename and very large content. This happens even with the default settings of `fileSizeThreshold=0` which should stream the whole part content to disk. An attacker client may send a large multipart request and cause the server to throw `OutOfMemoryError`. However, the server may be able to recover after the `OutOfMemoryError` and continue its service -- although it may take some time. This issue has been patched in versions 9.4.51, 10.0.14, and 11.0.14. Users are advised to upgrade. Users unable to upgrade may set the multipart parameter `maxRequestSize` which must be set to a non-negative value, so the whole multipart content is limited (although still read into memory).

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Project description
-------------------

Jetty is a lightweight highly scalable java based web server and servlet engine.
Our goal is to support web protocols like HTTP, HTTP/2 and WebSocket in a high volume low latency way that provides maximum performance while retaining the ease of use and compatibility with years of servlet development.
Jetty is a modern fully async web server that has a long history as a component oriented technology easily embedded into applications while still offering a solid traditional distribution for webapp deployment.

- [https://projects.eclipse.org/projects/rt.jetty](https://projects.eclipse.org/projects/rt.jetty)

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-------------

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- [https://www.eclipse.org/jetty/documentation](https://www.eclipse.org/jetty/documentation)

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========

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The first build may take a longer than expected as Maven downloads all the dependencies.

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