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