Headline

CVE-2022-35948: CRLF Injection in Nodejs ‘undici’ via Content-Type

undici is an HTTP/1.1 client, written from scratch for Node.js.=< [email protected] 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.

2 years ago

CVE

Open in Source

#nodejs #js

Impact

=< [email protected] 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:

http://localhost:3000/
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
To make a report, follow the SECURITY document

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GHSA-f772-66g8-q5h3: Nodejs ‘undici’ Vulnerable to CRLF Injection via Content-Type

### Impact `=< [email protected]` 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...

2 years ago

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Open in Source

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