CRLF Injection in Nodejs ‘undici’ via Content-Type

Vulnerability Description

undici is an HTTP/1.1 client, written from scratch for Node.js.`=< undici@5.8.0` users are vulnerable to _CRLF Injection_ on headers when using unsanitized input as request headers, more specifically, inside the `content-type` header. Example: ``` import { request } from 'undici' const unsanitizedContentTypeInput = 'application/json\r\n\r\nGET /foo2 HTTP/1.1' await request('http://localhost:3000, { method: 'GET', headers: { 'content-type': unsanitizedContentTypeInput }, }) ``` The above snippet will perform two requests in a single `request` API call: 1) `http://localhost:3000/` 2) `http://localhost:3000/foo2` This issue was patched in Undici v5.8.1. Sanitize input when sending content-type headers using user input as a workaround.

References

• https://github.com/nodejs/undici/releases/tag/v5.8.2
• https://github.com/nodejs/undici/security/advisories/GHSA-f772-66g8-q5h3
• https://github.com/nodejs/undici/commit/66165d604fd0aee70a93ed5c44ad4cc2df395f80