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KO
MEDIUM 5.3

GHSA-f772-66g8-q5h3

Nodejs ‘undici’ vulnerable to CRLF Injection via Content-Type

Details

### Impact

`=< 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`

### Patches

This issue was patched in Undici v5.8.1

### Workarounds

Sanitize input when sending content-type headers using user input.

## For more information If you have any questions or comments about this advisory:

- Open an issue in [undici repository](https://github.com/nodejs/undici/issues) - To make a report, follow the [SECURITY](https://github.com/nodejs/node/blob/HEAD/SECURITY.md) document

Are you affected?

Enter the version of the package you're using.

Affected packages

npm / undici
Introduced in: 0 Fixed in: 5.8.2
Fix npm install undici@5.8.2

References