CVE-2022-35948

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/jsonrnrnGET /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.

Weakness

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.

Affected Software

Potential Mitigations

Related Attack Patterns

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References

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