Description
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.
Published: 2019-02-06
Score: 7.5 High
EPSS: 1.4% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1672-1 curl security update
Debian DSA Debian DSA DSA-4386-1 curl security update
EUVD EUVD EUVD-2018-8678 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.
Ubuntu USN Ubuntu USN USN-3882-1 curl vulnerabilities
History

Wed, 15 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Canonical Ubuntu Linux
Debian Debian Linux
F5 Big-ip Access Policy Manager
Haxx Libcurl
Netapp Clustered Data Ontap
Oracle Communications Operations Monitor Http Server Secure Global Desktop
Redhat Enterprise Linux Jboss Core Services
Siemens Sinema Remote Connect Client
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-04-15T20:53:35.135Z

Reserved: 2018-09-11T00:00:00.000Z

Link: CVE-2018-16890

cve-icon Vulnrichment

Updated: 2024-08-05T10:39:57.668Z

cve-icon NVD

Status : Modified

Published: 2019-02-06T20:29:00.243

Modified: 2024-11-21T03:53:32.740

Link: CVE-2018-16890

cve-icon Redhat

Severity : Moderate

Publid Date: 2019-02-06T00:00:00Z

Links: CVE-2018-16890 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses