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An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurl-minimalUpgrade curl-minimalUpgrade libcurl-develUpgrade libcurlUpgrade curl | Aug 10, 2023 | Mar 30, 2023 |
| Alpine Linux | — | Upgrade curl | Mar 26, 2024 | Mar 30, 2023 |
| Amazon Linux Ami 2 | — | Upgrade libcurl-develUpgrade curlUpgrade curl-debuginfoUpgrade libcurl | Jun 8, 2023 | Mar 30, 2023 |
| Amazon_linux | — | Upgrade curl | Apr 21, 2023 | Mar 21, 2023 |
| Amazon_linux_2023 | — | Upgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade curlUpgrade curl-minimal-debuginfoUpgrade libcurl-develUpgrade curl-debugsourceUpgrade libcurlUpgrade curl-minimalUpgrade libcurl-minimal-debuginfoUpgrade libcurl-minimal | Feb 17, 2025 | Mar 20, 2023 |
| Centos_linux | — | Upgrade libcurl-minimal-debuginfoUpgrade curl-debuginfoUpgrade curl-debugsourceUpgrade curl-minimal-debuginfoUpgrade libcurlUpgrade libcurl-minimalUpgrade curl-minimalUpgrade curlUpgrade libcurl-develUpgrade libcurl-debuginfo | Aug 9, 2023 | Mar 30, 2023 |
| Debian | — | Upgrade curl | Apr 24, 2023 | Mar 30, 2023 |
| Freebsd | — | Upgrade curl | Mar 23, 2023 | Mar 20, 2023 |
| Gentoo Linux | — | Upgrade net-misc/curl. | Oct 12, 2023 | Mar 30, 2023 |
| Huawei Euleros 2_0_sp10 | — | Upgrade libcurlUpgrade curl | May 9, 2023 | Mar 30, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade libcurlUpgrade curl | Jan 10, 2024 | Mar 30, 2023 |
| Huawei Euleros 2_0_sp8 | — | Upgrade libcurl-develUpgrade curlUpgrade libcurl | Jun 9, 2023 | Mar 30, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade libcurlUpgrade curl | Jul 10, 2023 | Mar 30, 2023 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory2 | Jul 27, 2023 | Mar 30, 2023 |
| Oracle_linux | — | Upgrade libcurlUpgrade curlUpgrade libcurl-develUpgrade curl-minimalUpgrade libcurl-minimal | Aug 10, 2023 | Mar 20, 2023 |
| Redhat_linux | — | Upgrade curl-minimal-debuginfoUpgrade curl-debuginfoUpgrade libcurl-minimal-debuginfoNo solution existsUpgrade libcurl-minimalUpgrade curl-debugsourceUpgrade curlUpgrade curl-minimalUpgrade libcurlUpgrade libcurl-develUpgrade libcurl-debuginfo | Aug 9, 2023 | Mar 30, 2023 |
| Rocky_linux | — | Upgrade libcurl-minimal-debuginfoUpgrade curlUpgrade curl-debugsourceUpgrade libcurl-minimalUpgrade curl-debuginfoUpgrade libcurl-develUpgrade libcurlUpgrade libcurl-debuginfo | Mar 5, 2024 | Mar 30, 2023 |
| Splunk | — | Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Enterprise to version 8.1.14Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Universal Forwarder to version 8.1.14Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Enterprise to version 9.0.5Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Enterprise to version 9.0.6 | Sep 30, 2025 | Mar 30, 2023 |
| Suse | — | Upgrade libcurl-develUpgrade libcurl4-32bitUpgrade curlUpgrade libcurl-devel-32bitUpgrade libcurl4 | Mar 22, 2023 | Mar 21, 2023 |
| Ubuntu | — | Upgrade libcurl3-nss (Ubuntu Pro)Upgrade curlUpgrade libcurl3 (Ubuntu Pro)Upgrade libcurl3-nssUpgrade curl (Ubuntu Pro)Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl3-gnutlsUpgrade libcurl4 | Mar 22, 2023 | Mar 20, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Mar 30, 2023 |
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