libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of them matches the setup.Due to errors in the logic, the config matching function did not take 'issuercert' into account and it compared the involved paths *case insensitively*,which could lead to libcurl reusing wrong connections.File paths are, or can be, case sensitive on many systems but not all, and caneven vary depending on used file systems.The comparison also didn't include the 'issuer cert' which a transfer can setto qualify how to verify the server certificate.
CVSS Details
- CVSS 3.1 Base Score: 3.7
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | alma-upgrade-curlalma-upgrade-libcurlalma-upgrade-libcurl-develalma-upgrade-libcurl-minimal | May 4, 2022 | Aug 5, 2021 | |
| Alpine Linux | alpine-linux-upgrade-curl | Aug 22, 2024 | Aug 5, 2021 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-curlamazon-linux-ami-2-upgrade-curl-debuginfoamazon-linux-ami-2-upgrade-libcurlamazon-linux-ami-2-upgrade-libcurl-devel | Sep 16, 2021 | Aug 5, 2021 | |
| Amazon_linux | — | amazon-linux-upgrade-curl | Sep 9, 2021 | Jul 21, 2021 |
| Arch Linux | View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗ | arch-linux-upgrade-latest | Jul 11, 2025 | Aug 5, 2021 |
| Centos_linux | — | centos-upgrade-curlcentos-upgrade-curl-debuginfocentos-upgrade-curl-debugsourcecentos-upgrade-curl-minimal-debuginfocentos-upgrade-libcurlcentos-upgrade-libcurl-debuginfocentos-upgrade-libcurl-develcentos-upgrade-libcurl-minimalcentos-upgrade-libcurl-minimal-debuginfo | Sep 22, 2021 | Aug 5, 2021 |
| Debian | debian-upgrade-curl | Aug 16, 2021 | Aug 5, 2021 | |
| Freebsd | freebsd-upgrade-package-curl | Nov 4, 2022 | Jul 21, 2021 | |
| Huawei Euleros 2_0_sp8 | huawei-euleros-2_0_sp8-upgrade-curlhuawei-euleros-2_0_sp8-upgrade-libcurlhuawei-euleros-2_0_sp8-upgrade-libcurl-devel | Sep 24, 2021 | Aug 5, 2021 | |
| Huawei Euleros 2_0_sp9 | huawei-euleros-2_0_sp9-upgrade-curlhuawei-euleros-2_0_sp9-upgrade-libcurl | Nov 12, 2021 | Aug 5, 2021 | |
| Oracle Solaris | oracle-solaris-11-4-upgrade-web-curl-7-79-0-11-4-39-0-1-107-0 | Nov 17, 2021 | Aug 5, 2021 | |
| Oracle_linux | — | oracle-linux-upgrade-curloracle-linux-upgrade-libcurloracle-linux-upgrade-libcurl-develoracle-linux-upgrade-libcurl-minimal | Sep 22, 2021 | Jul 21, 2021 |
| Redhat_linux | no-fix-redhat-rpm-packageredhat-upgrade-curlredhat-upgrade-curl-debuginforedhat-upgrade-curl-debugsourceredhat-upgrade-curl-minimal-debuginforedhat-upgrade-libcurlredhat-upgrade-libcurl-debuginforedhat-upgrade-libcurl-develredhat-upgrade-libcurl-minimalredhat-upgrade-libcurl-minimal-debuginfo | Sep 22, 2021 | Aug 5, 2021 | |
| Rocky_linux | rocky-upgrade-curlrocky-upgrade-curl-debuginforocky-upgrade-curl-debugsourcerocky-upgrade-libcurlrocky-upgrade-libcurl-debuginforocky-upgrade-libcurl-develrocky-upgrade-libcurl-minimalrocky-upgrade-libcurl-minimal-debuginfo | Mar 12, 2024 | Aug 5, 2021 | |
| Splunk | splunk-upgrade-latest | Sep 30, 2025 | Aug 5, 2021 | |
| Suse | — | suse-upgrade-curlsuse-upgrade-curl-minisuse-upgrade-curl-openssl1suse-upgrade-libcurl-develsuse-upgrade-libcurl-devel-32bitsuse-upgrade-libcurl-mini-develsuse-upgrade-libcurl4suse-upgrade-libcurl4-32bitsuse-upgrade-libcurl4-minisuse-upgrade-libcurl4-openssl1suse-upgrade-libcurl4-openssl1-32bitsuse-upgrade-libcurl4-openssl1-x86 | Jul 22, 2021 | Jul 21, 2021 |
| Ubuntu | ubuntu-upgrade-curlubuntu-upgrade-libcurl3-gnutlsubuntu-upgrade-libcurl3-nssubuntu-upgrade-libcurl4 | Jul 23, 2021 | Jul 21, 2021 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Aug 5, 2021 |
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