Vulnerability Details : CVE-2016-2516
NTP before 4.2.8p7 and 4.3.x before 4.3.92, when mode7 is enabled, allows remote attackers to cause a denial of service (ntpd abort) by using the same IP address multiple times in an unconfig directive.
Vulnerability category: Input validationDenial of service
Products affected by CVE-2016-2516
- 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:4.3.8:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.9:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.6:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.7:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.10:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.11:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.5:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.13:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.14:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.20:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.21:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.28:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.29:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.36:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.37:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.43:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.44:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.51:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.52:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.59:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.66:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.67:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.74:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.75:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.81:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.82:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.89:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.17:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.18:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.24:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.25:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.32:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.33:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.40:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.47:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.48:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.55:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.56:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.62:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.63:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.70:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.78:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.79:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.85:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.86:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.12:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.19:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.26:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.27:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.34:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.35:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.41:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.42:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.49:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.50:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.57:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.58:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.64:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.65:*:*:*:*:*:*:*
- 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:4.3.80:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.87:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.88:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.15:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.16:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.22:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.23:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.30:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.31:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.38:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.39:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.45:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.46:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.53:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.54:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.60:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.61:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.68:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.69:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.76:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.77:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.83:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.84:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.90:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.91:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-2516
2.51%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-2516
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:N/I:N/A:C |
8.6
|
6.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.6
|
3.6
|
NIST |
CWE ids for CVE-2016-2516
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-2516
-
https://security.netapp.com/advisory/ntap-20171004-0002/
April 2016 Network Time Protocol Daemon (ntpd) Vulnerabilities in Multiple NetApp Products | NetApp Product Security
-
https://security.gentoo.org/glsa/201607-15
NTP: Multiple vulnerabilities (GLSA 201607-15) — Gentoo security
-
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
Oracle Solaris Bulletin - April 2016Third Party Advisory
-
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc
-
https://www.kb.cert.org/vuls/id/718152
VU#718152 - NTP.org ntpd contains multiple vulnerabilitiesThird Party Advisory;US Government Resource
-
http://www.securitytracker.com/id/1035705
ntp Multiple Bugs Let Remote Users Spoof Messages, Obtain Potentially Sensitive Information, Modify Time, and Deny Service - SecurityTracker
-
http://www.securityfocus.com/bid/88180
NTP CVE-2016-2516 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
http://support.ntp.org/bin/view/Main/NtpBug3011
NtpBug3011 < Main < NTPVendor Advisory
-
http://www.debian.org/security/2016/dsa-3629
Debian -- Security Information -- DSA-3629-1 ntp
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