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Fencer Vulns
medium 5.5

CVE-2018-19211 json

In ncurses 6.1, there is a NULL pointer dereference at function _nc_parse_entry in parse_entry.c that will lead to a denial of service atta…

published 2018-11-12 7 y ago modified 2026-07-25 3 mo ago also EUVD-2018-10920 , JLSEC-2026-442

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

In ncurses 6.1, there is a NULL pointer dereference at function _nc_parse_entry in parse_entry.c that will lead to a denial of service attack. The product proceeds to the dereference code path even after a "dubious character `*' in name or alias field" detection.

Patch / fix

  • julia Ncurses_jll 6.2.0+0
  • ncurses Debian 14, Debian 13, Debian 12 6.1+20180210-3

debian advisories DEBIAN-CVE-2018-19211

  • ncurses Ubuntu 18.04 LTS 6.1-1ubuntu1.18.04
  • ncurses Ubuntu Pro 14.04 LTS 5.9+20140118-1ubuntu1+esm2
  • ncurses Ubuntu Pro 16.04 LTS 6.0+20160213-1ubuntu1+esm2

ubuntu advisories UBUNTU-CVE-2018-19211

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ncurses SLE Module for Legacy 15, SLE Module for Development Tools 15, SLE Module for Basesystem 15 6.1-5.3.1
  • ncurses SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4 +5 more 5.9-61.1

suse advisories SUSE-SU-2018:4000-1SUSE-SU-2018:3967-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-19211 updated cvss 4.7

ncurses: Null pointer dereference at function _nc_parse_entry in parse_entry.c

  • Red Hat Enterprise Linux 5 ncurses Red Hat Enterprise Linux 6 ncurses, ncurses-base, ncurses-libs, ncurses-term Red Hat Enterprise Linux 7 ncurses, ncurses-base, ncurses-libs, ncurses-term Red Hat Enterprise Linux 8 ncurses, ncurses-base, ncurses-libs, ncurses-term, ncurses-c++-libs, ncurses-compat-libs
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1643754 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia Ncurses_jll
<6.2.0+0
6.2.0+0

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.