CVE-2023-26044

ReactPHP's HTTP server continues parsing unused multipart parts after reaching limits

Description

react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. Previous versions of ReactPHP's HTTP server component contain a potential DoS vulnerability that can cause high CPU load when processing large HTTP request bodies. This vulnerability has little to no impact on the default configuration, but can be exploited when explicitly using the RequestBodyBufferMiddleware with very large settings. This might lead to consuming large amounts of CPU time for processing requests and significantly delay or slow down the processing of legitimate user requests. This issue has been addressed in release 1.9.0. Users are advised to upgrade. Users unable to upgrade may keep the request body limited using RequestBodyBufferMiddleware with a sensible value which should mitigate the issue. An infrastructure or DevOps workaround could be to place a reverse proxy in front of the ReactPHP HTTP server to filter out any excessive HTTP request bodies.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.11%
Vendor Advisory github.com
Affected: reactphp http
Published at:
Updated at:

References

Link Tags
https://github.com/reactphp/http/security/advisories/GHSA-95x4-j7vc-h8mf vendor advisory
https://github.com/reactphp/http/commit/9681f764b80c45ebfb5fe2ea7da5bd3babfcdcfd patch

Frequently Asked Questions

What is the severity of CVE-2023-26044?
CVE-2023-26044 has been scored as a medium severity vulnerability.
How to fix CVE-2023-26044?
To fix CVE-2023-26044, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-26044 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-26044 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-26044?
CVE-2023-26044 affects reactphp http.
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