CVE-2018-16890
HIGH 7.5EPSS 5.4%
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.
- Affected
- The curl Project · curl
- CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS v3.0 REDHAT
- 5.4 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L - CVSS v2.0 NVD
- 5.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P - EPSS
- 5.35% chance of exploitation in the next 30 days, 93rd percentile
- Published
- 2019-02-06
- Updated
- 2026-04-15
Proof-of-concept exploits (1)
- michelleamesquita/CVE-2018-168900★ · 2022-09-06
Security advisories
- https://curl.haxx.se/docs/CVE-2018-16890.html
- http://www.securityfocus.com/bid/106947
- https://access.redhat.com/errata/RHSA-2019:3701
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16890
- https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf
- https://security.netapp.com/advisory/ntap-20190315-0001
- https://usn.ubuntu.com/3882-1
- https://www.debian.org/security/2019/dsa-4386
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html