Bug 2244104 (CVE-2023-45143)

Summary:	CVE-2023-45143 node-undici: cookie leakage
Product:	[Other] Security Response	Reporter:	Nick Tait <ntait>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dhanak, dsimansk, hhorak, jchui, jorton, ktsao, kverlaen, lball, matzew, mnovotny, nboldt, nodejs-maint, owatkins, rguimara, rhuss, sdawley
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	node-undici 5.26.2	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Undici node package due to the occurrence of Cross-origin requests, possibly leading to a cookie header leakage. By default, cookie headers are forbidden request headers, and they must be enabled. This flaw allows a malicious user to access this leaked cookie if they have control of the redirection.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2244466
Bug Blocks:	2244109

Description Nick Tait 2023-10-13 19:54:37 UTC

Undici is an HTTP/1.1 client written from scratch for Node.js. Prior to version 5.26.2, Undici already cleared Authorization headers on cross-origin redirects, but did not clear `Cookie` headers. By design, `cookie` headers are forbidden request headers, disallowing them to be set in RequestInit.headers in browser environments. Since undici handles headers more liberally than the spec, 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 third-party site or a malicious attacker who can control the redirection target (ie. an open redirector) to leak the cookie to the third party site. This was patched in version 5.26.2. There are no known workarounds.

https://hackerone.com/reports/2166948
https://github.com/nodejs/undici/security/advisories/GHSA-wqq4-5wpv-mx2g
https://github.com/nodejs/undici/commit/e041de359221ebeae04c469e8aff4145764e6d76
https://github.com/nodejs/undici/releases/tag/v5.26.2

Comment 7 errata-xmlrpc 2023-10-18 16:21:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:5849 https://access.redhat.com/errata/RHSA-2023:5849

Comment 9 errata-xmlrpc 2023-10-18 23:09:50 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:5869 https://access.redhat.com/errata/RHSA-2023:5869

Comment 11 errata-xmlrpc 2023-11-14 16:55:13 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:7205 https://access.redhat.com/errata/RHSA-2023:7205