THREATPORT/VULNERABILITY/CVE-2018-16890
HIGH SEVERITY

CVE-2018-16890

Libcurl vulnerability

CVSS
7.5
EPSS
5.4%
EPSS pct
92th
Exploited
No known
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 vendor
Haxx
Affected product
Libcurl
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-125 — Out-of-bounds Read
  • CWE-190 — Integer Overflow or Wraparound
Published
2019-02-06

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 5.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2018-16890

  • Confirm whether Haxx Libcurl is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-16890.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-16890

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-16890 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2018-16890?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2018-16890.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH
CVE-2008-4329
Openengine vulnerability
HIGH
CVE-2008-4342
Burnaware vulnerability
HIGH
CVE-2008-4343
Chilkat Xml Activex Control vulnerability