A user can tell curl >= 7.20.0 and <= 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server (`--ssl-reqd` on the command line or`CURLOPT_USE_SSL` set to `CURLUSESSL_CONTROL` or `CURLUSESSL_ALL` withlibcurl). This requirement could be bypassed if the server would return a properly crafted but perfectly legitimate response.This flaw would then make curl silently continue its operations **withoutTLS** contrary to the instructions and expectations, exposing possibly sensitive data in clear text over the network.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurl-minimalUpgrade libcurl-develUpgrade curlUpgrade libcurl | May 4, 2022 | Sep 29, 2021 |
| Alpine Linux | — | Upgrade curl | Aug 22, 2024 | Sep 29, 2021 |
| Amazon Linux Ami 2 | — | Upgrade curl-debuginfoUpgrade curlUpgrade libcurl-develUpgrade libcurl | Jul 4, 2022 | Sep 29, 2021 |
| Amazon_linux | — | Upgrade curl | Nov 16, 2021 | Sep 15, 2021 |
| Apple Osx Curl | — | Upgrade macOS to the latest version | Mar 18, 2022 | Sep 29, 2021 |
| Centos_linux | — | Upgrade libcurl-minimal-debuginfoUpgrade libcurl-minimalUpgrade curl-debuginfoUpgrade curlUpgrade curl-minimal-debuginfoUpgrade libcurl-develUpgrade curl-debugsourceUpgrade libcurlUpgrade libcurl-debuginfo | Nov 9, 2021 | Nov 2, 2021 |
| Debian | — | Upgrade curl | Nov 29, 2021 | Sep 29, 2021 |
| Freebsd | — | Upgrade mysql-connector-odbcUpgrade mysql-connector-javaUpgrade mysql-connector-java51Upgrade mysql-server80Upgrade curlUpgrade mysql-server56Upgrade mysql-connector-c++Upgrade mysql-server55Upgrade mysql-server57 | Nov 4, 2022 | Sep 17, 2021 |
| Gentoo Linux | — | Upgrade net-misc/curl. | Dec 19, 2022 | Sep 29, 2021 |
| Huawei Euleros 2_0_sp10 | — | Upgrade curlUpgrade libcurl | Feb 28, 2022 | Sep 29, 2021 |
| Huawei Euleros 2_0_sp8 | — | Upgrade libcurl-develUpgrade curlUpgrade libcurl | Dec 28, 2021 | Sep 29, 2021 |
| Huawei Euleros 2_0_sp9 | — | Upgrade libcurlUpgrade curl | Jan 28, 2022 | Sep 29, 2021 |
| Oracle Mysql | — | Upgrade to MySQL version 8.0.28Upgrade to MySQL version 5.7.37 | Jun 15, 2026 | Sep 29, 2021 |
| Oracle Solaris | — | Upgrade web/curl to version 7.79.0-11.4.39.0.1.107.0 on Solaris 11.4 | Nov 17, 2021 | Nov 17, 2021 |
| Oracle_linux | — | Upgrade libcurlUpgrade libcurl-develUpgrade libcurl-minimalUpgrade curl | Nov 3, 2021 | Sep 15, 2021 |
| Redhat_linux | — | Upgrade curl-debuginfoUpgrade libcurlUpgrade curlUpgrade curl-minimal-debuginfoUpgrade libcurl-minimalUpgrade libcurl-develUpgrade libcurl-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade curl-debugsourceNo solution exists | Nov 9, 2021 | Nov 2, 2021 |
| Rocky_linux | — | Upgrade curlUpgrade libcurlUpgrade libcurl-minimal-debuginfoUpgrade libcurl-develUpgrade libcurl-minimalUpgrade curl-debugsourceUpgrade libcurl-debuginfoUpgrade curl-debuginfo | May 5, 2022 | Sep 29, 2021 |
| Splunk | — | Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Universal Forwarder to version 8.1.14Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Enterprise to version 9.0.5Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Enterprise to version 8.1.14Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Enterprise to version 9.0.6 | Sep 30, 2025 | Sep 29, 2021 |
| Suse | — | Upgrade libcurl-devel-32bitUpgrade libcurl4-miniUpgrade libcurl4-32bitUpgrade libcurl4-openssl1Upgrade libcurl4-openssl1-x86Upgrade curl-miniUpgrade libcurl-develUpgrade curlUpgrade libcurl4Upgrade curl-openssl1Upgrade libcurl-mini-develUpgrade libcurl4-openssl1-32bit | Sep 24, 2021 | Sep 15, 2021 |
| Ubuntu | — | Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl4Upgrade libcurl3 (Ubuntu Pro)Upgrade libcurl3-gnutlsUpgrade curl (Ubuntu Pro)Upgrade curlUpgrade libcurl3-nssUpgrade libcurl3-nss (Ubuntu Pro) | Sep 16, 2021 | Sep 15, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Sep 29, 2021 |
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