HIGH
ncurses: Infinite loop in the next_char function
Published Aug 29, 2017
7.5
HIGHCVSS 3.0
EPSS 3.90%
Description
There is an infinite loop in the next_char function in comp_scan.c in ncurses 6.0, related to libtic. A crafted input will lead to a remote denial of service attack.
Affected products
No data.
- 6.0
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
| 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 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
3.3 LOW Red Hat
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.90% 0.03896
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03896
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.90% (0.03896) | 89.93th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.90% (0.03896) | 88.87th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.56% (0.00563) | 77.94th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.56% (0.00563) | 77.04th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00563) | 74.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.62% (0.01623) | 33.90th | v1 |
| Jan 6, 2022 | 1.62% (0.01623) | 33.20th | v1 |
| Sep 1, 2021 | 1.62% (0.01623) | 73.32th | v1 |
| Jun 30, 2021 | 1.62% (0.01623) | 0.00th | v1 |
| Jun 29, 2021 | 1.30% (0.01300) | 0.00th | v1 |
| Apr 14, 2021 | 0.98% (0.00976) | 0.00th | v1 |
Weaknesses (1)
References (8)
- https://access.redhat.com/security/cve/CVE-2017-13728 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1484274 x_refsource_MISCExploitIssue TrackingThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1488915 Issue Tracking
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-13728
- https://security.gentoo.org/glsa/201804-13 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2017-13728
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2017-13728 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1484274 | x_refsource_MISCExploitIssue TrackingThird Party AdvisoryVDB Entry | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1488915 | Issue Tracking | |
| https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E | mailing-listx_refsource_MLIST | |
| https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-13728 | ||
| https://security.gentoo.org/glsa/201804-13 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2017-13728 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Aug 29, 2017
Updated Aug 5, 2024
Reserved Aug 29, 2017
Link CVE-2017-13728
CISA Vulnrichment
Updated n/a