An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurl-develUpgrade libcurlUpgrade libcurl-minimalUpgrade curl-minimalUpgrade curl | Nov 16, 2023 | Mar 30, 2023 |
| Alpine Linux | — | Upgrade curl | Mar 26, 2024 | Mar 30, 2023 |
| Amazon Linux Ami 2 | — | Upgrade curl-debuginfoUpgrade curlUpgrade libcurl-develUpgrade libcurl | Jun 8, 2023 | Mar 30, 2023 |
| Amazon_linux_2023 | — | Upgrade curl-debuginfoUpgrade curl-minimalUpgrade libcurl-debuginfoUpgrade curlUpgrade libcurl-develUpgrade libcurlUpgrade curl-debugsourceUpgrade libcurl-minimalUpgrade curl-minimal-debuginfoUpgrade libcurl-minimal-debuginfo | Feb 17, 2025 | Mar 20, 2023 |
| Centos_linux | — | Upgrade libcurl-minimalUpgrade libcurl-debuginfoUpgrade curl-minimal-debuginfoUpgrade libcurlUpgrade curl-debuginfoUpgrade curl-debugsourceUpgrade libcurl-minimal-debuginfoUpgrade curl-minimalUpgrade libcurl-develUpgrade curl | Nov 8, 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 curlUpgrade libcurlUpgrade libcurl-devel | 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 curlUpgrade libcurl-minimalUpgrade libcurl-develUpgrade curl-minimalUpgrade libcurl | Jul 22, 2024 | Mar 20, 2023 |
| Redhat_linux | — | Upgrade curl-minimal-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade curl-debugsourceUpgrade libcurl-minimalUpgrade curl-debuginfoUpgrade curlUpgrade libcurl-debuginfoUpgrade libcurlUpgrade libcurl-develNo solution existsUpgrade curl-minimal | Nov 8, 2023 | Mar 30, 2023 |
| Splunk | — | Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Enterprise to version 9.0.6Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Enterprise to version 8.1.14Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Universal Forwarder to version 8.1.14Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Enterprise to version 9.0.5 | Sep 30, 2025 | Mar 30, 2023 |
| Suse | — | Upgrade libcurl-develUpgrade curlUpgrade libcurl4-32bitUpgrade libcurl4Upgrade libcurl-devel-32bit | Mar 22, 2023 | Mar 21, 2023 |
| Ubuntu | — | Upgrade libcurl3-gnutlsUpgrade curlUpgrade libcurl3-nssUpgrade 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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