CVE-2023-45143

2023-10-1217:15:10

Google

osv.dev

undici

http/1.1

client

cookie headers

cross-origin redirects

leakage

patch

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

6.8 Medium

AI Score

Confidence

High

0.009 Low

EPSS

Percentile

82.4%

JSON

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.

CPENameOperatorVersion
nodejseq16.17.0-r0
undicieq4.8.0
nodejseq8.9.3-r1
nodejseq6.11.1-r0
undicieq4.3.0
nodejseq10.14.1-r0
nodejseq18.14.2-r1
nodejseq14.15.4-r0
undicieq5.22.1
undicieq4.0.0-rc.7

Name	Operator	Version
nodejs	eq	16.17.0-r0
undici	eq	4.8.0
nodejs	eq	8.9.3-r1
nodejs	eq	6.11.1-r0
undici	eq	4.3.0
nodejs	eq	10.14.1-r0
nodejs	eq	18.14.2-r1
nodejs	eq	14.15.4-r0
undici	eq	5.22.1
undici	eq	4.0.0-rc.7