CVE-2023-46218

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CVE-2023-46218

Summary:

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 lower case hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain.

References: https://cert-portal.siemens.com/productcert/html/ssa-082556.html, https://cert-portal.siemens.com/productcert/html/ssa-093430.html, https://cert-portal.siemens.com/productcert/html/ssa-202008.html, https://cert-portal.siemens.com/productcert/html/ssa-331112.html, https://curl.se/docs/CVE-2023-46218.html, https://hackerone.com/reports/2212193, https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html, https://lists.fedoraproject.org/archives/list/[email protected]/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/, https://lists.fedoraproject.org/archives/list/[email protected]/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/46xxx/CVE-2023-46218.json, https://nvd.nist.gov/vuln/detail/CVE-2023-46218, https://security.netapp.com/advisory/ntap-20240125-0007/, https://www.debian.org/security/2023/dsa-5587