CVE-2023-46218 Affecting curl package, versions <8.5.0-r0


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.12% (48th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-WOLFILATEST-CURL-6514785
  • published31 Mar 2024
  • disclosed7 Dec 2023

Introduced: 7 Dec 2023

CVE-2023-46218  (opens in a new tab)

How to fix?

Upgrade Wolfi curl to version 8.5.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get sent to different and unrelated sites and domains.

It could do this by exploiting a mixed case flaw in curl's function that verifies a given cookie domain against the Public Suffix List (PSL). For example a cookie could be set with domain=co.UK when the URL used a lower case hostname curl.co.uk, even though co.uk is listed as a PSL domain.

CVSS Scores

version 3.1