Vulnerability · Published Aug 13, 2022 · Assigned by GitHub_M
CVE-2022-35948CRLF Injection in Nodejs ‘undici’ via Content-Type
Medium 5.3
In plain English
A medium-severity injection in undici from nodejs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | node-undici | 5.8.2+dfsg1+~cs18.9.18.1-1 | DEBIAN-CVE-2022-35948 |
| Debian:13 | node-undici | 5.8.2+dfsg1+~cs18.9.18.1-1 | DEBIAN-CVE-2022-35948 |
| Debian:14 | node-undici | 5.8.2+dfsg1+~cs18.9.18.1-1 | DEBIAN-CVE-2022-35948 |
| npm | undici | 5.8.2 | GHSA-f772-66g8-q5h3 |
Affected products (as reported)
Weakness: CWE-93, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N