curl 7.7 through 7.76.1 suffers from an information disclosure when the `-t` command line option, known as `CURLOPT_TELNETOPTIONS` in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.
CVSS Details
- CVSS 3.1 Base Score: 3.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurlUpgrade curlUpgrade libcurl-minimalUpgrade libcurl-devel | May 4, 2022 | Jun 11, 2021 |
| Alpine Linux | — | Upgrade curl | Mar 26, 2024 | Jun 11, 2021 |
| Amazon Linux Ami 2 | — | Upgrade libcurlUpgrade libcurl-develUpgrade curl-debuginfoUpgrade curl | Jun 24, 2021 | Jun 11, 2021 |
| Amazon_linux | — | Upgrade curl | Jul 13, 2021 | May 26, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2021 |
| Centos_linux | — | Upgrade curlUpgrade libcurl-develUpgrade libcurl-minimalUpgrade curl-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade libcurlUpgrade curl-minimal-debuginfoUpgrade curl-debugsourceUpgrade libcurl-debuginfo | Nov 10, 2021 | Jun 11, 2021 |
| Debian | — | Upgrade curl | Aug 16, 2021 | Jun 11, 2021 |
| Gentoo Linux | — | Upgrade net-misc/curl. | May 28, 2021 | May 26, 2021 |
| Huawei Euleros 2_0_sp2 | — | Upgrade libcurlUpgrade libcurl-develUpgrade curl | Sep 16, 2021 | Jun 11, 2021 |
| Huawei Euleros 2_0_sp3 | — | Upgrade libcurl-develUpgrade curlUpgrade libcurl | Oct 26, 2021 | Jun 11, 2021 |
| Huawei Euleros 2_0_sp5 | — | Upgrade libcurlUpgrade curlUpgrade libcurl-devel | Sep 7, 2021 | Jun 11, 2021 |
| Huawei Euleros 2_0_sp8 | — | Upgrade libcurl-develUpgrade curlUpgrade libcurl | Aug 10, 2021 | Jun 11, 2021 |
| Huawei Euleros 2_0_sp9 | — | Upgrade curlUpgrade libcurl | Aug 10, 2021 | Jun 11, 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 | Jun 11, 2021 |
| Oracle_linux | — | Upgrade libcurl-minimalUpgrade libcurl-develUpgrade curlUpgrade libcurl | Nov 17, 2021 | May 26, 2021 |
| Redhat_linux | — | Upgrade libcurl-develUpgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade curlUpgrade libcurlUpgrade curl-debugsourceNo solution existsUpgrade libcurl-minimal-debuginfoUpgrade curl-minimal-debuginfoUpgrade libcurl-minimal | Nov 10, 2021 | Jun 11, 2021 |
| Rocky_linux | — | Upgrade libcurl-minimalUpgrade curlUpgrade libcurl-minimal-debuginfoUpgrade libcurl-debuginfoUpgrade curl-debugsourceUpgrade libcurlUpgrade curl-debuginfoUpgrade libcurl-devel | Mar 12, 2024 | Jun 11, 2021 |
| Splunk | — | Upgrade Splunk Enterprise to version 9.0.5Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Enterprise to version 9.0.6Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Enterprise to version 8.1.14Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Universal Forwarder to version 8.1.14 | Sep 30, 2025 | Jun 11, 2021 |
| Suse | — | Upgrade curl-openssl1Upgrade libcurl-devel-32bitUpgrade libcurl4-openssl1-32bitUpgrade libcurl4-openssl1Upgrade curl-miniUpgrade libcurl4-openssl1-x86Upgrade libcurl4-miniUpgrade libcurl-develUpgrade curlUpgrade libcurl4-32bitUpgrade libcurl-mini-develUpgrade libcurl4 | May 27, 2021 | May 26, 2021 |
| Ubuntu | — | Upgrade libcurl4Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl3-nssUpgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3-gnutlsUpgrade curlUpgrade libcurl3 (Ubuntu Pro)Upgrade curl (Ubuntu Pro) | Jul 23, 2021 | May 26, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jun 11, 2021 |
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