Vulnerability DatabaseCVE-2016-2516
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CVE-2016-2516
Published:January 30, 2017
Updated:May 17, 2026
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.
Related Resources (12)
https://www.kb.cert.org/vuls/id/718152
http://www.securityfocus.com/bid/88180
https://security-tracker.debian.org/tracker/CVE-2016-2516
https://security.gentoo.org/glsa/201607-15
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://support.ntp.org/bin/view/Main/NtpBug3011
http://www.securitytracker.com/id/1035705
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-2516
http://www.debian.org/security/2016/dsa-3629
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc
https://security.netapp.com/advisory/ntap-20171004-0002/
https://access.redhat.com/security/cve/CVE-2016-2516
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CVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improper Input Validation
CWE-20
EPSS
Base Score:
3.65