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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurl-develUpgrade curlUpgrade curl-minimalUpgrade libcurl-minimalUpgrade libcurl | Mar 8, 2024 | Dec 7, 2023 |
| Alpine Linux | — | Upgrade curl | Mar 26, 2024 | Dec 7, 2023 |
| Amazon Linux Ami 2 | — | Upgrade curlUpgrade libcurlUpgrade curl-debuginfoUpgrade libcurl-devel | Jan 10, 2024 | Dec 7, 2023 |
| Amazon_linux_2023 | — | Upgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade libcurl-develUpgrade curl-minimalUpgrade libcurlUpgrade curl-debugsourceUpgrade libcurl-minimal-debuginfoUpgrade curl-minimal-debuginfoUpgrade libcurl-minimalUpgrade curl | Feb 17, 2025 | Dec 6, 2023 |
| Debian | — | Upgrade curl | Dec 27, 2023 | Dec 7, 2023 |
| F5 Big Ip | — | — | Mar 7, 2024 | Dec 7, 2023 |
| Gentoo Linux | — | Upgrade net-misc/curl. | Sep 24, 2024 | Dec 7, 2023 |
| Huawei Euleros 2_0_sp10 | — | Upgrade libcurlUpgrade curl | Mar 13, 2024 | Dec 7, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade libcurlUpgrade curl | Jan 29, 2024 | Dec 7, 2023 |
| Huawei Euleros 2_0_sp8 | — | Upgrade libcurlUpgrade curlUpgrade libcurl-devel | Mar 13, 2024 | Dec 7, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade curlUpgrade libcurl | Feb 12, 2024 | Dec 7, 2023 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory4 | Mar 8, 2024 | Dec 7, 2023 |
| Nutanix Ahv | — | Upgrade Nutanix AHV to the latest version | Jun 5, 2026 | Sep 10, 2024 |
| Oracle_linux | — | Upgrade curlUpgrade libcurl-develUpgrade curl-minimalUpgrade libcurlUpgrade libcurl-minimal | Mar 7, 2024 | Dec 6, 2023 |
| Redhat_linux | — | Upgrade libcurl-develUpgrade curl-minimalUpgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade libcurlUpgrade curlUpgrade libcurl-minimal-debuginfoUpgrade libcurl-minimalUpgrade curl-minimal-debuginfoUpgrade curl-debugsource | Jan 26, 2024 | Dec 7, 2023 |
| Rocky_linux | — | Upgrade libcurl-minimalUpgrade curl-debuginfoUpgrade libcurl-debuginfoUpgrade curl-debugsourceUpgrade curlUpgrade libcurl-minimal-debuginfoUpgrade libcurl-develUpgrade libcurl | Apr 8, 2024 | Dec 7, 2023 |
| Suse | — | Upgrade libcurl4Upgrade curlUpgrade libcurl-develUpgrade libcurl4-32bitUpgrade libcurl-devel-32bit | Dec 7, 2023 | Dec 6, 2023 |
| Ubuntu | — | Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade curl (Ubuntu Pro)Upgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3-nssUpgrade libcurl3-gnutlsUpgrade libcurl3 (Ubuntu Pro)Upgrade curlUpgrade libcurl4Upgrade libcurl4 (Ubuntu Pro) | Dec 8, 2023 | Dec 7, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Dec 7, 2023 |
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