CVE-2023-51701: reply-from Request Smuggling — Fix

Description

fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. A reverse proxy server built with `@fastify/reply-from` could misinterpret the incoming body by passing an header `ContentType: application/json ; charset=utf-8`. This can lead to bypass of security checks. This vulnerability has been patched in '@fastify/reply-from` version 9.6.0.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-444 CWE-444

Affected Products

Vendor	Product	Versions
fastify	reply-from	< 9.6.0

References

Advisories & Patches

https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-v2v2-hph8-q5xp https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-v2v2-hph8-q5xp

Other References

https://github.com/fastify/fastify-reply-from/releases/tag/v9.6.0 https://github.com/fastify/fastify-reply-from/releases/tag/v9.6.0

Frequently Asked Questions

What is CVE-2023-51701? +

fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. A reverse proxy server built with `@fastify/reply-from` could misinterpret the incoming body by passing an header `ContentType: application/json ; charset=utf-8`. This can lead to bypass of security checks. This vulnerability has been patched in '@fastify/reply-from` version 9.6.0. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2023-51701? +

CVE-2023-51701 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-51701? +

CVE-2023-51701 affects products from fastify, specifically: reply-from. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-51701? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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