CVE-2022-35948CWE-74CWE-93

CRLF Injection in Nodejs ‘undici’ via Content-Type

Medium · published August 13, 2022

CVSS v3.1
5.3
EPSS
1%
Percentile
71.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.01351 · 71.1th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
Published
2022-08-13T00:00Z
EPSS history
Timeline
  • 13 AUG 00:00Z
    CRLF Injection in Nodejs ‘undici’ via Content-Type
    cvelistv5