#VU67164 CRLF injection in undici - CVE-2022-35948

Vulnerability identifier: #VU67164

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-35948

CWE-ID: CWE-93

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
undici
Server applications / File servers (FTP/HTTP)

Vendor: Node.js

Description

The vulnerability allows a remote attacker to inject arbitrary data in server response.

The vulnerability exists due to insufficient validation of unsanitized input passed as request headers. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

undici: 1.0.0 - 5.8.1

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External links
https://github.com/nodejs/undici/security/advisories/GHSA-f772-66g8-q5h3
https://github.com/nodejs/undici/releases/tag/v5.8.2
https://github.com/nodejs/undici/commit/66165d604fd0aee70a93ed5c44ad4cc2df395f80

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.