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VULNERABILITIES

CVE-2016-2517 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc CVE
https://security.gentoo.org/glsa/201607-15 CVE
https://security.netapp.com/advisory/ntap-20171004-0002/ CVE
http://support.ntp.org/bin/view/Main/NtpBug3010 CVEVendor Advisory
https://www.kb.cert.org/vuls/id/718152 CVEThird Party AdvisoryUS Government Resource

see all 16 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-20Improper Input Validation[email protected]

Affected Products

ProductVersions
ntp ntp
<= 4.2.8
4.3.0
4.3.1
4.3.2
4.3.3

CPE

  • cpe:2.3:a:ntp:ntp:*:p6:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.4:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.5:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.6:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.7:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.8:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.9:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.10:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.11:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.12:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.13:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.14:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.15:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.16:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.17:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.18:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.19:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.20:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.21:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.22:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.23:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.24:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.25:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.26:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.27:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.28:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.29:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.30:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.31:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.32:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.33:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.34:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.35:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.36:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.37:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.38:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.39:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.40:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.41:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.42:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.43:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.44:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.45:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.46:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.47:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.48:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.49:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.50:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.51:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.52:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.53:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.54:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.55:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.56:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.57:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.58:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.59:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.60:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.61:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.62:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.63:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.64:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.65:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.66:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.67:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.68:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.69:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.70:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.71:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.72:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.73:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.74:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.75:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.76:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.77:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.78:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.79:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.80:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.81:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.82:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.83:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.84:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.85:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.86:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.87:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.88:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.89:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.90:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.91:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

11 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2016-2517
NVD Published Date:
Jan 30, 2017
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2016-2517 Details - Not Deferred