A vulnerability, which was classified as critical, has been found in undici up to 5.8.0 on Node.js (JavaScript Library). Affected by this issue is an unknown part of the component Content-Type Header Handler. The manipulation with an unknown input leads to a crlf injection vulnerability. Using CWE to declare the problem leads to CWE-93. 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released 08/15/2022 as GHSA-f772-66g8-q5h3. The advisory is available at github.com. This vulnerability is handled as CVE-2022-35948 since 07/15/2022. The technical details are unknown and an exploit is not available.

Upgrading to version 5.8.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 66165d604fd0aee70a93ed5c44ad4cc2df395f80 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be patching the affected component.

Entries connected to this vulnerability are available at VDB-17900, VDB-163399, VDB-167198 and VDB-186831.

Productinfo

Type

• JavaScript Library

Name

• undici

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8

License

• open-source

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CPE 2.2info

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