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CVE-2023-46218

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.

Published Dec 7, 2023CWE-178EPSS 1.69%

Overview

CVE-2023-46218 is a medium-severity vulnerability. It was published on December 7, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcurl.se/docs/CVE-2023-46218.htmlRefhackerone.com/reports/2212193Reflists.debian.org/debian-lts-announce/2023/12/msg00015.htmlReflists.fedoraproject.org/archives/list/[email protected]/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/Reflists.fedoraproject.org/archives/list/[email protected]/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/Refsecurity.netapp.com/advisory/ntap-20240125-0007/Refwww.debian.org/security/2023/dsa-5587Refcurl.se/docs/CVE-2023-46218.htmlRefhackerone.com/reports/2212193Reflists.debian.org/debian-lts-announce/2023/12/msg00015.html

How CyberStrike helps

Frequently asked questions

What is CVE-2023-46218?

CVE-2023-46218 is a medium-severity vulnerability. It was published on December 7, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2023-46218?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-46218?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-46218?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-46218 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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