undici is an HTTP/1.1 client, written from scratch for Node.js. It is possible to inject CRLF sequences into request headers in undici in versions less than 5.7.1. A fix was released in version 5.8.0. Sanitizing all HTTP headers from untrusted sources to eliminate rn is a workaround for this issue.
Weakness
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 Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Undici | Nodejs | * | 5.8.0 (excluding) |
| Node-undici | Ubuntu | kinetic | * |
| Node-undici | Ubuntu | lunar | * |
| Node-undici | Ubuntu | mantic | * |
| Node-undici | Ubuntu | oracular | * |
| Node-undici | Ubuntu | plucky | * |
Potential Mitigations
Related Attack Patterns
References
- https://github.com/nodejs/undici/releases/tag/v5.8.0
- https://github.com/nodejs/undici/security/advisories/GHSA-3cvr-822r-rqcc
- https://hackerone.com/reports/409943
- https://security.netapp.com/advisory/ntap-20220915-0002/
- https://github.com/nodejs/undici/releases/tag/v5.8.0
- https://github.com/nodejs/undici/security/advisories/GHSA-3cvr-822r-rqcc
- https://hackerone.com/reports/409943
- https://security.netapp.com/advisory/ntap-20220915-0002/