CVE-2016-7426

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://nwtime.org/ntp428p9_release/Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0252.htmlThird Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug3071Issue Tracking, Mitigation, Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_VulnerabilitiesRelease Notes, Vendor Advisory
http://www.securityfocus.com/bid/94451Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037354Third Party Advisory, VDB Entry
https://bto.bluecoat.com/security-advisory/sa139Third Party Advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_usThird Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.ascThird Party Advisory
https://usn.ubuntu.com/3707-2/Third Party Advisory
https://www.kb.cert.org/vuls/id/633847Third Party Advisory, US Government Resource
http://nwtime.org/ntp428p9_release/Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0252.htmlThird Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug3071Issue Tracking, Mitigation, Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_VulnerabilitiesRelease Notes, Vendor Advisory
http://www.securityfocus.com/bid/94451Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037354Third Party Advisory, VDB Entry
https://bto.bluecoat.com/security-advisory/sa139Third Party Advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_usThird Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.ascThird Party Advisory
https://usn.ubuntu.com/3707-2/Third Party Advisory
https://www.kb.cert.org/vuls/id/633847Third Party Advisory, US Government Resource

Timeline

Published: Jan 13, 2017
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2016

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