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 | alpine-linux-upgrade-curl | Mar 7, 2019 | Feb 6, 2019 | |
| 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 | Apr 27, 2020 | Feb 6, 2019 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Feb 6, 2019 | |
| 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 | Nov 6, 2019 | Feb 6, 2019 |
| Debian | debian-upgrade-curl | Feb 7, 2019 | Feb 6, 2019 | |
| Freebsd | freebsd-upgrade-package-curl | Feb 8, 2019 | Feb 7, 2019 | |
| Oracle Solaris | oracle-solaris-11-4-upgrade-web-curl-7-64-0-11-4-7-0-1-3-0 | Mar 20, 2019 | Feb 6, 2019 | |
| Oracle_linux | — | oracle-linux-upgrade-curloracle-linux-upgrade-libcurloracle-linux-upgrade-libcurl-develoracle-linux-upgrade-libcurl-minimal | Oct 5, 2022 | Feb 6, 2019 |
| Redhat Openshift | linuxrpm-upgrade-redhat-coreos | Dec 29, 2020 | Feb 6, 2019 | |
| Redhat_linux | redhat-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 | Nov 6, 2019 | Feb 6, 2019 | |
| Suse | — | suse-upgrade-curlsuse-upgrade-curl-minisuse-upgrade-libcurl-develsuse-upgrade-libcurl-devel-32bitsuse-upgrade-libcurl-mini-develsuse-upgrade-libcurl4suse-upgrade-libcurl4-32bitsuse-upgrade-libcurl4-mini | Feb 7, 2019 | Feb 7, 2019 |
| Ubuntu | ubuntu-upgrade-curlubuntu-upgrade-libcurl3ubuntu-upgrade-libcurl3-gnutlsubuntu-upgrade-libcurl3-nssubuntu-upgrade-libcurl4 | Feb 14, 2019 | Feb 6, 2019 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Feb 6, 2019 |
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