libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.
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:N/I:N/A:H)
- CVSS 3.0 Base Score: 5.4
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade curl | Mar 7, 2019 | Feb 6, 2019 |
| Amazon Linux Ami 2 | — | Upgrade libcurl-develUpgrade curlUpgrade curl-debuginfoUpgrade libcurl | Apr 27, 2020 | Feb 6, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Feb 6, 2019 |
| Centos_linux | — | Upgrade curl-debugsourceUpgrade curl-minimal-debuginfoUpgrade libcurl-minimalUpgrade libcurl-debuginfoUpgrade libcurl-develUpgrade curl-debuginfoUpgrade curlUpgrade libcurl-minimal-debuginfoUpgrade libcurl | Nov 6, 2019 | Feb 6, 2019 |
| Debian | — | Upgrade curl | Feb 7, 2019 | Feb 6, 2019 |
| F5 Big Ip | — | — | Oct 24, 2019 | Feb 7, 2019 |
| Freebsd | — | Upgrade curl | Feb 8, 2019 | Feb 7, 2019 |
| Oracle Solaris | — | Upgrade web/curl to version 7.64.0-11.4.7.0.1.3.0 on Solaris 11.4 | Mar 20, 2019 | Feb 6, 2019 |
| Oracle_linux | — | Upgrade libcurl-develUpgrade curlUpgrade libcurlUpgrade libcurl-minimal | Oct 5, 2022 | Feb 6, 2019 |
| Redhat Openshift | — | Upgrade redhat-coreos | Dec 29, 2020 | Feb 6, 2019 |
| Redhat_linux | — | Upgrade libcurlUpgrade curl-minimal-debuginfoUpgrade curl-debuginfoUpgrade curlUpgrade libcurl-develUpgrade libcurl-debuginfoUpgrade libcurl-minimalUpgrade curl-debugsourceUpgrade libcurl-minimal-debuginfo | Nov 6, 2019 | Feb 6, 2019 |
| Suse | — | Upgrade libcurl4-miniUpgrade libcurl-mini-develUpgrade libcurl-devel-32bitUpgrade curlUpgrade curl-miniUpgrade libcurl4-32bitUpgrade libcurl4Upgrade libcurl-devel | Feb 7, 2019 | Feb 7, 2019 |
| Ubuntu | — | Upgrade curlUpgrade libcurl4Upgrade libcurl3Upgrade libcurl3-nssUpgrade libcurl3-gnutls | Feb 14, 2019 | Feb 6, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Feb 6, 2019 |
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