CVE-2016-2516

CVSS V2 High 7.1 CVSS V3 Medium 5.3
Description
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.
Overview
  • CVE ID
  • CVE-2016-2516
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2017-01-30T21:59:01
  • Last Modified Date
  • 2017-11-21T02:29:03
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:ntp:ntp:*:p6:*:*:*:*:*:* 1 OR 4.2.8
cpe:2.3:a:ntp:ntp:4.3.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.8:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.9:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.11:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.12:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.13:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.14:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.15:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.16:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.17:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.18:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.19:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.20:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.21:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.22:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.23:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.24:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.25:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.26:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.27:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.28:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.29:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.30:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.31:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.32:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.33:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.34:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.35:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.36:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.37:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.38:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.39:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.40:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.41:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.42:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.43:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.44:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.45:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.46:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.47:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.48:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.49:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.50:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.51:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.52:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.53:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.54:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.55:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.56:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.57:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.58:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.59:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.61:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.62:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.63:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.64:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.65:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.66:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.67:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.68:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.69:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.70:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.71:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.72:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.73:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.74:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.75:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.76:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.77:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.78:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.79:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.80:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.81:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.82:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.83:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.84:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.85:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.86:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.87:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.88:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.89:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.90:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.91:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.1
  • Severity
  • HIGH
  • Exploitability Score
  • 8.6
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.6
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.kb.cert.org/vuls/id/718152 Third Party Advisory US Government Resource
http://support.ntp.org/bin/view/Main/NtpBug3011 Vendor Advisory
http://www.securityfocus.com/bid/88180 Third Party Advisory VDB Entry
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory
https://security.gentoo.org/glsa/201607-15
http://www.securitytracker.com/id/1035705
http://www.debian.org/security/2016/dsa-3629
https://security.netapp.com/advisory/ntap-20171004-0002/
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2016-2516
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2516
History
Created Old Value New Value Data Type Notes
2022-05-10 08:11:03 Added to TrackCVE
2022-12-02 13:25:53 2017-01-30T21:59Z 2017-01-30T21:59:01 CVE Published Date updated
2022-12-02 13:25:53 2017-11-21T02:29:03 CVE Modified Date updated
2022-12-02 13:25:53 Modified Vulnerability Status updated