curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and instead return a non-200 status code to the client. Due to flaws in the error/cleanup handling, this could trigger a double free in curl if one of the following schemes were used in the URL for the transfer: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, or telnet. The earliest affected version is 7.77.0.
CVSS Details
- CVSS 3.1 Base Score: 8.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade curl | Mar 26, 2024 | Oct 29, 2022 |
| Amazon Linux Ami 2 | — | Upgrade curlUpgrade libcurlUpgrade libcurl-develUpgrade curl-debuginfo | Dec 7, 2022 | Oct 29, 2022 |
| Amazon_linux_2023 | — | Upgrade libcurl-minimal-debuginfoUpgrade libcurl-minimalUpgrade curl-minimalUpgrade libcurlUpgrade libcurl-develUpgrade curl-minimal-debuginfoUpgrade curl-debugsourceUpgrade curl-debuginfoUpgrade libcurl-debuginfoUpgrade curl | Feb 17, 2025 | Oct 26, 2022 |
| Apple Osx Curl | — | Upgrade macOS to the latest version | Jan 24, 2023 | Jan 23, 2023 |
| Autodesk Autocad | — | Update Autodesk AutoCAD to the latest version for Windows and macOS. | May 29, 2026 | Jun 23, 2023 |
| Debian | — | Upgrade curl | Jul 30, 2024 | Oct 29, 2022 |
| Freebsd | — | Upgrade curl | Dec 14, 2022 | Dec 14, 2022 |
| Gentoo Linux | — | Upgrade net-misc/curl. | Dec 19, 2022 | Oct 29, 2022 |
| Huawei Euleros 2_0_sp11 | — | Upgrade libcurlUpgrade curl | Jan 6, 2023 | Oct 29, 2022 |
| Splunk | — | Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade 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 Enterprise to version 8.1.14Upgrade Splunk Enterprise to version 9.0.6Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Enterprise to version 9.0.5Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Enterprise to version 8.2.12 | Sep 30, 2025 | Oct 29, 2022 |
| Suse | — | Upgrade libcurl4Upgrade libcurl4-32bitUpgrade curlUpgrade libcurl-devel | Jun 13, 2023 | Oct 29, 2022 |
| Ubuntu | — | Upgrade libcurl4Upgrade libcurl3-gnutlsUpgrade curlUpgrade libcurl3-nss | Oct 27, 2022 | Oct 26, 2022 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Oct 29, 2022 |
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