Impact

It is possible to inject CRLF sequences into request headers in Undici.

const undici = require('undici')

const response = undici.request("http://127.0.0.1:1000", {
  headers: {'a': "\r\nb"}
})

The same applies to path and method

Patches

Update to v5.8.0

Workarounds

Sanitize all HTTP headers from untrusted sources to eliminate \r\n.

References

https://hackerone.com/reports/409943
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12116

For more information

If you have any questions or comments about this advisory:

• Open an issue in undici repository
• To make a report, follow the SECURITY document

References

• GHSA-3cvr-822r-rqcc
• https://nvd.nist.gov/vuln/detail/CVE-2022-31150
• nodejs/undici@a29a151
• https://hackerone.com/reports/409943
• https://github.com/nodejs/undici/releases/tag/v5.8.0
• https://security.netapp.com/advisory/ntap-20220915-0002/