CVE-2016-2517
Summary
| CVE | CVE-2016-2517 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-01-30 21:59:01 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| Description | NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (prevent subsequent authentication) by leveraging knowledge of the controlkey or requestkey and sending a crafted packet to ntpd, which changes the value of trustedkey, controlkey, or requestkey. NOTE: this vulnerability exists because of a CVE-2016-2516 regression. |
Risk And Classification
Primary CVSS: v3.0 5.3 MEDIUM from [email protected]
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-20 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 5.3 | MEDIUM | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 4.9 | AV:N/AC:H/Au:S/C:N/I:N/A:C |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
HighAuthentication
SingleConfidentiality
NoneIntegrity
NoneAvailability
CompleteAV:N/AC:H/Au:S/C:N/I:N/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Ntp | Ntp | 4.3.0 | All | All | All |
| Application | Ntp | Ntp | 4.3.1 | All | All | All |
| Application | Ntp | Ntp | 4.3.10 | All | All | All |
| Application | Ntp | Ntp | 4.3.11 | All | All | All |
| Application | Ntp | Ntp | 4.3.12 | All | All | All |
| Application | Ntp | Ntp | 4.3.13 | All | All | All |
| Application | Ntp | Ntp | 4.3.14 | All | All | All |
| Application | Ntp | Ntp | 4.3.15 | All | All | All |
| Application | Ntp | Ntp | 4.3.16 | All | All | All |
| Application | Ntp | Ntp | 4.3.17 | All | All | All |
| Application | Ntp | Ntp | 4.3.18 | All | All | All |
| Application | Ntp | Ntp | 4.3.19 | All | All | All |
| Application | Ntp | Ntp | 4.3.2 | All | All | All |
| Application | Ntp | Ntp | 4.3.20 | All | All | All |
| Application | Ntp | Ntp | 4.3.21 | All | All | All |
| Application | Ntp | Ntp | 4.3.22 | All | All | All |
| Application | Ntp | Ntp | 4.3.23 | All | All | All |
| Application | Ntp | Ntp | 4.3.24 | All | All | All |
| Application | Ntp | Ntp | 4.3.25 | All | All | All |
| Application | Ntp | Ntp | 4.3.26 | All | All | All |
| Application | Ntp | Ntp | 4.3.27 | All | All | All |
| Application | Ntp | Ntp | 4.3.28 | All | All | All |
| Application | Ntp | Ntp | 4.3.29 | All | All | All |
| Application | Ntp | Ntp | 4.3.3 | All | All | All |
| Application | Ntp | Ntp | 4.3.30 | All | All | All |
| Application | Ntp | Ntp | 4.3.31 | All | All | All |
| Application | Ntp | Ntp | 4.3.32 | All | All | All |
| Application | Ntp | Ntp | 4.3.33 | All | All | All |
| Application | Ntp | Ntp | 4.3.34 | All | All | All |
| Application | Ntp | Ntp | 4.3.35 | All | All | All |
| Application | Ntp | Ntp | 4.3.36 | All | All | All |
| Application | Ntp | Ntp | 4.3.37 | All | All | All |
| Application | Ntp | Ntp | 4.3.38 | All | All | All |
| Application | Ntp | Ntp | 4.3.39 | All | All | All |
| Application | Ntp | Ntp | 4.3.4 | All | All | All |
| Application | Ntp | Ntp | 4.3.40 | All | All | All |
| Application | Ntp | Ntp | 4.3.41 | All | All | All |
| Application | Ntp | Ntp | 4.3.42 | All | All | All |
| Application | Ntp | Ntp | 4.3.43 | All | All | All |
| Application | Ntp | Ntp | 4.3.44 | All | All | All |
| Application | Ntp | Ntp | 4.3.45 | All | All | All |
| Application | Ntp | Ntp | 4.3.46 | All | All | All |
| Application | Ntp | Ntp | 4.3.47 | All | All | All |
| Application | Ntp | Ntp | 4.3.48 | All | All | All |
| Application | Ntp | Ntp | 4.3.49 | All | All | All |
| Application | Ntp | Ntp | 4.3.5 | All | All | All |
| Application | Ntp | Ntp | 4.3.50 | All | All | All |
| Application | Ntp | Ntp | 4.3.51 | All | All | All |
| Application | Ntp | Ntp | 4.3.52 | All | All | All |
| Application | Ntp | Ntp | 4.3.53 | All | All | All |
| Application | Ntp | Ntp | 4.3.54 | All | All | All |
| Application | Ntp | Ntp | 4.3.55 | All | All | All |
| Application | Ntp | Ntp | 4.3.56 | All | All | All |
| Application | Ntp | Ntp | 4.3.57 | All | All | All |
| Application | Ntp | Ntp | 4.3.58 | All | All | All |
| Application | Ntp | Ntp | 4.3.59 | All | All | All |
| Application | Ntp | Ntp | 4.3.6 | All | All | All |
| Application | Ntp | Ntp | 4.3.60 | All | All | All |
| Application | Ntp | Ntp | 4.3.61 | All | All | All |
| Application | Ntp | Ntp | 4.3.62 | All | All | All |
| Application | Ntp | Ntp | 4.3.63 | All | All | All |
| Application | Ntp | Ntp | 4.3.64 | All | All | All |
| Application | Ntp | Ntp | 4.3.65 | All | All | All |
| Application | Ntp | Ntp | 4.3.66 | All | All | All |
| Application | Ntp | Ntp | 4.3.67 | All | All | All |
| Application | Ntp | Ntp | 4.3.68 | All | All | All |
| Application | Ntp | Ntp | 4.3.69 | All | All | All |
| Application | Ntp | Ntp | 4.3.7 | All | All | All |
| Application | Ntp | Ntp | 4.3.70 | All | All | All |
| Application | Ntp | Ntp | 4.3.71 | All | All | All |
| Application | Ntp | Ntp | 4.3.72 | All | All | All |
| Application | Ntp | Ntp | 4.3.73 | All | All | All |
| Application | Ntp | Ntp | 4.3.74 | All | All | All |
| Application | Ntp | Ntp | 4.3.75 | All | All | All |
| Application | Ntp | Ntp | 4.3.76 | All | All | All |
| Application | Ntp | Ntp | 4.3.77 | All | All | All |
| Application | Ntp | Ntp | 4.3.78 | All | All | All |
| Application | Ntp | Ntp | 4.3.79 | All | All | All |
| Application | Ntp | Ntp | 4.3.8 | All | All | All |
| Application | Ntp | Ntp | 4.3.80 | All | All | All |
| Application | Ntp | Ntp | 4.3.81 | All | All | All |
| Application | Ntp | Ntp | 4.3.82 | All | All | All |
| Application | Ntp | Ntp | 4.3.83 | All | All | All |
| Application | Ntp | Ntp | 4.3.84 | All | All | All |
| Application | Ntp | Ntp | 4.3.85 | All | All | All |
| Application | Ntp | Ntp | 4.3.86 | All | All | All |
| Application | Ntp | Ntp | 4.3.87 | All | All | All |
| Application | Ntp | Ntp | 4.3.88 | All | All | All |
| Application | Ntp | Ntp | 4.3.89 | All | All | All |
| Application | Ntp | Ntp | 4.3.9 | All | All | All |
| Application | Ntp | Ntp | 4.3.90 | All | All | All |
| Application | Ntp | Ntp | 4.3.91 | All | All | All |
| Application | Ntp | Ntp | All | p6 | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| April 2016 Network Time Protocol Daemon (ntpd) Vulnerabilities in Multiple NetApp Products | NetApp Product Security | af854a3a-2127-422b-91ae-364da2661108 | security.netapp.com | |
| Vulnerability Note VU#718152 - NTP.org ntpd contains multiple vulnerabilities | af854a3a-2127-422b-91ae-364da2661108 | www.kb.cert.org | Third Party Advisory, US Government Resource |
| support.ntp.org/bin/view/Main/NtpBug3010 | af854a3a-2127-422b-91ae-364da2661108 | support.ntp.org | Vendor Advisory |
| security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc | af854a3a-2127-422b-91ae-364da2661108 | security.FreeBSD.org | |
| NTP: Multiple vulnerabilities (GLSA 201607-15) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| ntp Multiple Bugs Let Remote Users Spoof Messages, Obtain Potentially Sensitive Information, Modify Time, and Deny Service - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| NTP CVE-2016-2517 Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| Oracle Solaris Bulletin - April 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.