Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 7.46.0, <= 8.4.0 |
| Fedoraproject | Fedora | 39 |
Related Weaknesses (CWE)
References
- https://curl.se/docs/CVE-2023-46218.htmlPatchVendor Advisory
- https://hackerone.com/reports/2212193ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://security.netapp.com/advisory/ntap-20240125-0007/
- https://www.debian.org/security/2023/dsa-5587
- https://curl.se/docs/CVE-2023-46218.htmlPatchVendor Advisory
- https://hackerone.com/reports/2212193ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://security.netapp.com/advisory/ntap-20240125-0007/
- https://www.debian.org/security/2023/dsa-5587
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
FAQ
What is CVE-2023-46218?
CVE-2023-46218 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 the...
How severe is CVE-2023-46218?
CVE-2023-46218 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-46218?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl, Fedoraproject Fedora.