Description
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.
Remediation
References
https://github.com/nodejs/undici/commit/e041de359221ebeae04c469e8aff4145764e6d76
https://github.com/nodejs/undici/releases/tag/v5.26.2
https://github.com/nodejs/undici/security/advisories/GHSA-q768-x9m6-m9qp
https://github.com/nodejs/undici/security/advisories/GHSA-wqq4-5wpv-mx2g
https://hackerone.com/reports/2166948
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/
Related Vulnerabilities
CVE-2022-25871 Vulnerability in npm package querymen
CVE-2019-12419 Vulnerability in maven package org.apache.cxf:cxf-rt-rs-security-sso-oidc
CVE-2023-40787 Vulnerability in maven package org.springblade:blade-core-tool
CVE-2023-40828 Vulnerability in maven package org.pf4j:pf4j
CVE-2020-36048 Vulnerability in maven package org.webjars.npm:engine.io