low
3.9
CWE
200
Advisory Published
Advisory Published
Updated

CVE-2023-45143: Undici's cookie header not cleared on cross-origin redirect in fetch

First published: Thu Oct 12 2023(Updated: )

### Impact Undici clears Authorization headers on cross-origin redirects, but does not clear `Cookie` headers. By design, `cookie` headers are [forbidden request headers](https://fetch.spec.whatwg.org/#forbidden-request-header), disallowing them to be set in `RequestInit.headers` in browser environments. Since Undici handles headers more liberally than the specification, there was a disconnect from the assumptions the spec made, and Undici's implementation of fetch. As such this may lead to accidental leakage of cookie to a 3rd-party site or a malicious attacker who can control the redirection target (ie. an open redirector) to leak the cookie to the 3rd party site. ### Patches This was patched in [e041de359221ebeae04c469e8aff4145764e6d76](https://github.com/nodejs/undici/commit/e041de359221ebeae04c469e8aff4145764e6d76), which is included in version 5.26.2.

Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
Nodejs Undici<5.26.2
npm/undici<5.26.2
5.26.2
redhat/node-undici<5.26.2
5.26.2
Fedoraproject Fedora=37
Fedoraproject Fedora=38
Fedoraproject Fedora=39

Remedy

https://github.com/nodejs/undici/commit/e041de359221ebeae04c469e8aff4145764e6d76

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-45143?

    CVE-2023-45143 is a vulnerability in the Undici HTTP/1.1 client for Node.js version 5.26.2 and earlier.

  • What is the impact of CVE-2023-45143?

    The impact of CVE-2023-45143 is that Undici clears Authorization headers on cross-origin redirects, but does not clear Cookie headers, which could potentially lead to security breaches.

  • How can I fix CVE-2023-45143?

    To fix CVE-2023-45143, upgrade to Undici version 5.26.2 or later.

  • What is the severity of CVE-2023-45143?

    CVE-2023-45143 has a severity rating of 3.9 (low).

  • Where can I find more information about CVE-2023-45143?

    You can find more information about CVE-2023-45143 in the references provided on the GitHub page for Undici.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203