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 libcurl-minimalUpgrade curlUpgrade libcurl-devel | May 4, 2022 | Jun 11, 2021 |
| Alpine Linux | — | Upgrade curl | Mar 26, 2024 | Jun 11, 2021 |
| Amazon Linux Ami 2 | — | Upgrade libcurl-develUpgrade curlUpgrade curl-debuginfoUpgrade libcurl | 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 curl-debugsourceUpgrade libcurl-debuginfoUpgrade libcurlUpgrade curl-minimal-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade curlUpgrade libcurl-minimalUpgrade curl-debuginfoUpgrade libcurl-devel | 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 libcurl-develUpgrade curlUpgrade libcurl | Sep 16, 2021 | Jun 11, 2021 |
| Huawei Euleros 2_0_sp3 | — | Upgrade libcurlUpgrade curlUpgrade libcurl-devel | Oct 26, 2021 | Jun 11, 2021 |
| Huawei Euleros 2_0_sp5 | — | Upgrade libcurlUpgrade libcurl-develUpgrade curl | 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 libcurlUpgrade curl | 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 curlUpgrade libcurl-develUpgrade libcurl | Nov 17, 2021 | May 26, 2021 |
| Redhat_linux | — | Upgrade libcurl-minimal-debuginfoNo solution existsUpgrade libcurl-minimalUpgrade curl-minimal-debuginfoUpgrade curlUpgrade libcurlUpgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade libcurl-develUpgrade curl-debugsource | Nov 10, 2021 | Jun 11, 2021 |
| Rocky_linux | — | Upgrade libcurlUpgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade libcurl-develUpgrade curl-debugsourceUpgrade libcurl-minimal-debuginfoUpgrade curlUpgrade libcurl-minimal | Mar 12, 2024 | Jun 11, 2021 |
| Splunk | — | Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Enterprise to version 9.0.5Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Enterprise to version 9.0.6Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Universal Forwarder to version 8.1.14Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Enterprise to version 8.1.14 | Sep 30, 2025 | Jun 11, 2021 |
| Suse | — | Upgrade libcurl4-32bitUpgrade libcurl-develUpgrade libcurl4-miniUpgrade curlUpgrade libcurl4Upgrade libcurl-mini-develUpgrade libcurl4-openssl1-x86Upgrade libcurl-devel-32bitUpgrade curl-miniUpgrade curl-openssl1Upgrade libcurl4-openssl1-32bitUpgrade libcurl4-openssl1 | May 27, 2021 | May 26, 2021 |
| Ubuntu | — | Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl3-nssUpgrade libcurl4Upgrade libcurl3-nss (Ubuntu Pro)Upgrade curlUpgrade libcurl3 (Ubuntu Pro)Upgrade libcurl3-gnutlsUpgrade 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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