CVE-2017-6463

MEDIUM

Ntp - Improper Input Validation

Title source: rule

Description

NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote authenticated users to cause a denial of service (daemon crash) via an invalid setting in a :config directive, related to the unpeer option.

References (10)

[Vendor Advisory] http://support.ntp.org/bin/view/Main/NtpBug3387

[Vendor Advisory] http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/97049

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1038123

[Various Sources] https://security.FreeBSD.org/advisories/FreeBSD-SA-17:03.ntp.asc

[Vendor Advisory] https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us

[Vendor Advisory] https://usn.ubuntu.com/3707-2/

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2017:3071

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:0855

[Vendor Advisory] https://support.apple.com/HT208144

Scores

CVSS v3 6.5

EPSS 0.0314

EPSS Percentile 86.7%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-20

Status published

Affected Products (50)

ntp/ntp

... and 35 more

Timeline

Published Mar 27, 2017

Tracked Since Feb 18, 2026