VDB

ALPINE-CVE-2018-16890

ALPINE-CVE-2018-16890 PUBLISHED CVSS 7.5 HIGH

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.

Risk Scores

CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Alpine:v3.23curl7.63.0-r0, 7.62.0-r2, 7.62.0-r1
Alpine:v3.21curl7.21.3-r0, 7.19.2-r0, 7.19.2-r1
Alpine:v3.18curl7.37.1-r0, 7.38.0-r0, 7.39.0-r0
Alpine:v3.11curl7.45.0-r0, 7.36.0-r0, 7.35.0-r0
Alpine:v3.20curl7.52.1-r0, 7.52.0-r0, 7.37.1-r0
Alpine:v3.22curl7.63.0-r0, 0, 7.51.0-r1
Alpine:v3.7curl7.61.1-r1, 7.61.1-r0, 7.61.0-r0
Alpine:v3.12curl7.21.2-r0, 0, 7.19.2-r0
Alpine:v3.19curl7.37.0-r0, 7.37.1-r0, 7.38.0-r0
Alpine:v3.13curl7.42.0-r0, 7.46.0-r0, 7.45.0-r1
Alpine:v3.14curl7.63.0-r0, 7.62.0-r2, 7.62.0-r1
Alpine:v3.16curl7.21.6-r0, 0, 7.19.2-r0
Alpine:v3.8curl7.21.6-r0, 7.21.7-r0, 7.21.7-r1
Alpine:v3.17curl7.36.0-r0, 7.35.0-r0, 7.34.0-r1
Alpine:v3.10curl7.63.0-r0, 0, 7.19.2-r0
Alpine:v3.15curl7.21.1-r0, 7.42.1-r1, 7.22.0-r0
Alpine:v3.6curl7.19.4-r0, 7.37.0-r0, 0

Timeline

  • Feb 6, 2019 CVE Published
  • Dec 3, 2025 CVE Updated
  • Apr 30, 2026 Distribution Patch
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