ncurses: Null pointer dereference at function _nc_name_match
Published Nov 12, 2018
6.5
MEDIUMCVSS 3.0
EPSS 1.16%
Description
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
Affected products
No data.
- 6.1
No data.
Red Hat Enterprise Linux 5
ncurses
Will not fix
Red Hat Enterprise Linux 6
ncurses
Will not fix
Red Hat Enterprise Linux 7
ncurses
Will not fix
Red Hat Enterprise Linux 8
ncurses
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | ncurses | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | ncurses | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | ncurses | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | ncurses | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This vulnerability is rated as moderate because it allows a remote attacker to cause a denial of service via a NULL pointer dereference, exploiting this flaw would crash the application, impacting availability but not compromising system integrity.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.16% (0.01159) | 65.93th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.16% (0.01159) | 65.69th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.08% (0.00084) | 36.06th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.08% (0.00084) | 34.42th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00079) | 32.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00518) | 11.68th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.52% (0.00518) | 0.00th | v1 |
References (5)
- https://access.redhat.com/security/cve/CVE-2018-19217 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1643753 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1652606 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-19217
- https://www.cve.org/CVERecord?id=CVE-2018-19217
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-19217 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1643753 | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1652606 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-19217 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-19217 |
Change history (0)
No recorded changes yet.