CVE-2023-46218

Description

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.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-24-319-04

https://www.cisa.gov/news-events/ics-advisories/icsa-24-137-07

https://www.debian.org/security/2023/dsa-5587

https://security.netapp.com/advisory/ntap-20240125-0007/

https://lists.fedoraproject.org/archives/list/[email protected]/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/

https://lists.fedoraproject.org/archives/list/[email protected]/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/

https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html

https://hackerone.com/reports/2212193

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

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4