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An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurlUpgrade libcurl-develUpgrade curlUpgrade libcurl-minimalUpgrade curl-minimal | May 15, 2023 | Mar 30, 2023 |
| Alpine Linux | — | Upgrade curl | Mar 26, 2024 | Mar 30, 2023 |
| Amazon Linux Ami 2 | — | Upgrade curlUpgrade curl-debuginfoUpgrade libcurlUpgrade libcurl-devel | Jun 8, 2023 | Mar 30, 2023 |
| Amazon_linux | — | Upgrade curl | Apr 21, 2023 | Mar 21, 2023 |
| Amazon_linux_2023 | — | Upgrade libcurl-debuginfoUpgrade libcurl-develUpgrade curl-debuginfoUpgrade libcurlUpgrade libcurl-minimalUpgrade libcurl-minimal-debuginfoUpgrade curl-minimalUpgrade curlUpgrade curl-debugsourceUpgrade curl-minimal-debuginfo | Feb 17, 2025 | Mar 20, 2023 |
| Centos_linux | — | Upgrade curlUpgrade libcurl-develUpgrade libcurl-debuginfoUpgrade curl-minimal-debuginfoUpgrade curl-debuginfoUpgrade curl-debugsourceUpgrade libcurlUpgrade libcurl-minimal-debuginfoUpgrade curl-minimalUpgrade libcurl-minimal | May 15, 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 curl-minimalUpgrade curlUpgrade libcurl-develUpgrade libcurl-minimalUpgrade libcurl | May 17, 2023 | Mar 20, 2023 |
| Redhat_linux | — | Upgrade curl-minimal-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade libcurl-minimalUpgrade curl-debugsourceUpgrade curl-minimalUpgrade libcurl-develUpgrade curlUpgrade libcurl-debuginfoUpgrade libcurlUpgrade curl-debuginfoNo solution exists | May 15, 2023 | Mar 30, 2023 |
| Rocky_linux | — | Upgrade curl-debuginfoUpgrade curl-debugsourceUpgrade libcurl-minimal-debuginfoUpgrade libcurlUpgrade libcurl-debuginfoUpgrade libcurl-develUpgrade curlUpgrade libcurl-minimal | Mar 5, 2024 | Mar 30, 2023 |
| Splunk | — | Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Enterprise to version 9.0.5Upgrade Splunk Enterprise to version 9.0.6Upgrade Splunk Enterprise to version 8.1.14Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Universal Forwarder to version 8.1.14Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Universal Forwarder to version 9.1.1 | Sep 30, 2025 | Mar 30, 2023 |
| Suse | — | Upgrade libcurl4-32bitUpgrade curlUpgrade libcurl-devel-32bitUpgrade libcurl-develUpgrade libcurl4 | Mar 22, 2023 | Mar 21, 2023 |
| Ubuntu | — | Upgrade curlUpgrade libcurl3 (Ubuntu Pro)Upgrade libcurl3-nssUpgrade libcurl3-nss (Ubuntu Pro)Upgrade curl (Ubuntu Pro)Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl4Upgrade libcurl3-gnutls | 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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