GHSA-v2v2-hph8-q5xp
@fastify/reply-from JSON Content-Type parsing confusion
Quick fix
GHSA-v2v2-hph8-q5xp — @fastify/reply-from: upgrade to the fixed version with the command below.
npm install @fastify/reply-from@9.6.0Details
### Impact
The main repo of fastify use [fast-content-type-parse](https://github.com/fastify/fast-content-type-parse) to parse request Content-Type, which will [trim after split](https://github.com/fastify/fast-content-type-parse/blob/2776d054dd48e9ce40b8d5e5ff9b46fee82b95f1/index.js#L59).
The [fastify-reply-from](https://github.com/fastify/fastify-reply-from/blob/b79a22d6eb9a0b52cfbe8eb2cb22ad65f5a39e64/index.js#L118C14-L118C14) have not use this repo to unify the parse of Content-Type, which [won't trim](https://github.com/fastify/fastify-reply-from/blob/b79a22d6eb9a0b52cfbe8eb2cb22ad65f5a39e64/index.js#L118C14-L118C14).
As a result, 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.
### Patches
`@fastify/reply-from` v9.6.0 include the fix.
### Workarounds
There are no known workarounds.
### References
Hackerone Report: https://hackerone.com/reports/2295770.
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Affected packages
References
- https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-v2v2-hph8-q5xp[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2023-51701[ADVISORY]
- https://github.com/fastify/fastify-reply-from/commit/cbd7c17c09e6476268e34f5e499a6b923e8acc18[WEB]
- https://github.com/fastify/fastify-reply-from[PACKAGE]
- https://github.com/fastify/fastify-reply-from/releases/tag/v9.6.0[WEB]