CVE-2023-45143 – undici

Package

Manager: npm
Name: undici
Vulnerable Version: >=0 <5.26.2

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

EPSS: 0.00078 pctl0.23927

Details

Undici's cookie header not cleared on cross-origin redirect in fetch ### 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.

Metadata

Created: 2023-10-16T14:05:37Z
Modified: 2024-02-16T22:37:23Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-wqq4-5wpv-mx2g/GHSA-wqq4-5wpv-mx2g.json
CWE IDs: ["CWE-200"]
Alternative ID: GHSA-wqq4-5wpv-mx2g
Finding: F308
Auto approve: 1