CVE-2022-35948

CRLF Injection in Nodejs ‘undici’ via Content-Type

State
Published
Severity
5.3 Medium
Published
Aug 13, 2022
Updated
Apr 22, 2025
Reserved
Jul 15, 2022

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NGitHub_M

Weaknesses

  • CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Affected Products

ProductVersions
undicinodejs
  • =< 5.8.0Affected

References

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