MEDIUM
ntp: ctl_getitem() return value not always checked
Published Jan 30, 2017
5.9
MEDIUMCVSS 3.0
EPSS 6.87%
Description
ntpd in NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (ntpd abort) by a large request data value, which triggers the ctl_getitem function to return a NULL value.
Affected products
No data.
Configuration 2
OR
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.4
- 4.3.5
- 4.3.6
- 4.3.7
- 4.3.8
- 4.3.9
- 4.3.10
- 4.3.11
- 4.3.12
- 4.3.13
- 4.3.14
- 4.3.15
- 4.3.16
- 4.3.17
- 4.3.18
- 4.3.19
- 4.3.20
- 4.3.21
- 4.3.22
- 4.3.23
- 4.3.24
- 4.3.25
- 4.3.26
- 4.3.27
- 4.3.28
- 4.3.29
- 4.3.30
- 4.3.31
- 4.3.32
- 4.3.33
- 4.3.34
- 4.3.35
- 4.3.36
- 4.3.37
- 4.3.38
- 4.3.39
- 4.3.40
- 4.3.41
- 4.3.42
- 4.3.43
- 4.3.44
- 4.3.45
- 4.3.46
- 4.3.47
- 4.3.48
- 4.3.49
- 4.3.50
- 4.3.51
- 4.3.52
- 4.3.53
- 4.3.54
- 4.3.55
- 4.3.56
- 4.3.57
- 4.3.58
- 4.3.59
- 4.3.60
- 4.3.61
- 4.3.62
- 4.3.63
- 4.3.64
- 4.3.65
- 4.3.66
- 4.3.67
- 4.3.68
- 4.3.69
- 4.3.70
- 4.3.71
- 4.3.72
- 4.3.73
- 4.3.74
- 4.3.75
- 4.3.76
- 4.3.77
- 4.3.78
- 4.3.79
- 4.3.80
- 4.3.81
- 4.3.82
- 4.3.83
- 4.3.84
- 4.3.85
- 4.3.86
- 4.3.87
- 4.3.88
- 4.3.89
- 4.3.90
- 4.3.91
No data.
Red Hat Enterprise Linux 5
ntp
Not affected
Red Hat Enterprise Linux 6
ntp
Not affected
Red Hat Enterprise Linux 7
ntp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | ntp | Not affected | n/a |
| Red Hat Enterprise Linux 6 | ntp | Not affected | n/a |
| Red Hat Enterprise Linux 7 | ntp | Not affected | 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.
5.9 MEDIUM NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.9 MEDIUM NVD
AV:N/AC:H/Au:S/C:N/I:N/A:C
Access Vector Network
Access Complexity High
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
6.87% 0.06865
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.06865
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (29 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.87% (0.06865) | 93.85th | v5 (v2026.06.15) |
| Sep 22, 2026 | 6.87% (0.06865) | 93.75th | v5 (v2026.06.15) |
| Sep 21, 2026 | 5.86% (0.05863) | 92.92th | v5 (v2026.06.15) |
| Sep 6, 2026 | 6.87% (0.06865) | 93.60th | v5 (v2026.06.15) |
| Sep 5, 2026 | 5.86% (0.05863) | 92.77th | v5 (v2026.06.15) |
| Aug 30, 2026 | 6.87% (0.06865) | 93.57th | v5 (v2026.06.15) |
| Aug 28, 2026 | 5.86% (0.05863) | 92.73th | v5 (v2026.06.15) |
| Aug 24, 2026 | 6.87% (0.06865) | 93.53th | v5 (v2026.06.15) |
| Aug 23, 2026 | 5.86% (0.05863) | 92.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.87% (0.06865) | 93.20th | v5 (v2026.06.15) |
| Dec 28, 2025 | 9.49% (0.09494) | 92.56th | v4 (v2025.03.14) |
| Dec 27, 2025 | 11.77% (0.11770) | 93.50th | v4 (v2025.03.14) |
| Dec 20, 2025 | 9.49% (0.09494) | 92.55th | v4 (v2025.03.14) |
| Dec 15, 2025 | 12.36% (0.12363) | 93.63th | v4 (v2025.03.14) |
| Dec 13, 2025 | 13.65% (0.13651) | 94.00th | v4 (v2025.03.14) |
| Aug 10, 2025 | 11.77% (0.11770) | 93.41th | v4 (v2025.03.14) |
| Jul 28, 2025 | 7.07% (0.07072) | 91.08th | v4 (v2025.03.14) |
| Mar 30, 2025 | 9.09% (0.09094) | 91.88th | v4 (v2025.03.14) |
| Mar 29, 2025 | 17.40% (0.17396) | 91.82th | v4 (v2025.03.14) |
| Mar 17, 2025 | 9.09% (0.09094) | 92.05th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.12% (0.03115) | 90.86th | v3 (v2023.03.01) |
| May 2, 2024 | 4.62% (0.04618) | 92.49th | v3 (v2023.03.01) |
| Feb 12, 2024 | 4.11% (0.04108) | 91.84th | v3 (v2023.03.01) |
| Nov 21, 2023 | 3.52% (0.03519) | 90.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.16% (0.03156) | 89.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
Weaknesses (1)
References (13)
- http://support.ntp.org/bin/view/Main/NtpBug3008 x_refsource_CONFIRMVendor Advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/88204 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1035705 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2016-2519 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1331469 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-2519
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc vendor-advisoryx_refsource_FREEBSD
- https://security.gentoo.org/glsa/201607-15 vendor-advisoryx_refsource_GENTOO
- https://security.netapp.com/advisory/ntap-20171004-0002/ x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2016-2519
- https://www.kb.cert.org/vuls/id/718152 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 30, 2017
Updated Aug 5, 2024
Reserved Feb 20, 2016
Link CVE-2016-2519
CISA Vulnrichment
Updated n/a