CVE-2022-35948

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Trends

Current EPSS score: 0.17%• Percentile: 37%

Techniques & Countermeasures

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

  The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

• CWE-93•Improper Neutralization of CRLF Sequences ('CRLF Injection')

  The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

Affected Systems

• nodejs•undici

  =< 5.8.0 | < 5.8.2

• Npm•undici

  < 5.8.2

References (5)

• https://github.com/nodejs/undici/releases/tag/v5.8.2
• https://github.com/nodejs/undici/security/advisories/GHSA-f772-66g8-q5h3
• https://github.com/nodejs/undici/commit/66165d604fd0aee70a93ed5c44ad4cc2df395f80
• https://nvd.nist.gov/vuln/detail/CVE-2022-35948
• https://github.com/nodejs/undici