CURL-CVE-2023-46218

Source

https://curl.se/docs/CVE-2023-46218.html

Import Source

https://curl.se/docs/CURL-CVE-2023-46218.json

Aliases

• CVE-2023-46218

Published

2023-12-06T08:00:00Z

Modified

2024-01-25T02:42:52.458434Z

Summary

cookie mixed case PSL bypass

Details

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 lowercase hostname curl.co.uk, even though co.uk is listed as a PSL domain.

References