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CVE-2018-19217

** DISPUTED ** In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the...

6.5 MediumFix availableDisputed

In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.16%Up 0.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.5

In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party

Record
CVE-2018-19217
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-476
Updated
2026-11-02
CVE List No score

In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party

Record
CVE-2018-19217
Updated
2026-11-02
EUVDEUVD-2018-10926 No score

In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party

Record
EUVD-2018-10926
Updated
2026-11-03
GitHub AdvisoriesGHSA-gm6j-8p43-6m5w 6.5

** DISPUTED ** In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the...

** DISPUTED ** In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party.

Record
GHSA-gm6j-8p43-6m5w
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
OSVAZL-40988 6.5

CVE-2018-19217 affecting package ncurses 6.4-3

In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party

Record
AZL-40988
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBELL-CVE-2018-19217 6.5

CVE-2018-19217 does not affect BellSoft software

Record
BELL-CVE-2018-19217
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 6.5

In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party

Record
CVE-2018-19217
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-19217 6.5

In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party

Record
DEBIAN-CVE-2018-19217
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-19217 6.5

In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party

Record
UBUNTU-CVE-2018-19217
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
ncurses
Azure Linux:3
 through 6.4-3 None known
ncurses
Debian:12
 before 6.0+20170701-1
6.0+20170701-1
ncurses
Debian:13
 before 6.0+20170701-1
6.0+20170701-1
ncurses
Debian:14
 before 6.0+20170701-1
6.0+20170701-1
ncurses
Ubuntu:Pro:14.04:LTS
 before 5.9+20140118-1ubuntu1+esm1, plus listed versions
5.9+20130608-1ubuntu15.9+20131221-1ubuntu15.9+20140118-1ubuntu1
5.9+20140118-1ubuntu1+esm1
ncurses
Ubuntu:Pro:16.04:LTS
 before 6.0+20160213-1ubuntu1+esm1, plus listed versions
5.9+20150516-2ubuntu16.0+20151024-2ubuntu16.0+20151024-2ubuntu26.0+20160213-1ubuntu1
6.0+20160213-1ubuntu1+esm1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-19217 is a medium vulnerability (CVSS 6.5) in Invisible-island Ncurses, published November 12, 2018. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 1.16%, the 67th percentile. Fixed in ncurses 6.0+20170701-1.

References

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