CVE-2016-7431

MEDIUM

Ntp - Improper Input Validation

Title source: rule

Description

NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.

References (25)

[Vendor Advisory] https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us

[Vendor Advisory] https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03883en_us

[Vendor Advisory] https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03899en_us

[Vendor Advisory] https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03883en_us

[Vendor Advisory] https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03899en_us

[Vendor Advisory] https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf

[Mailing List] http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html

[Release Notes, Vendor Advisory] http://nwtime.org/ntp428p9_release/

[Exploit, Third Party Advisory] http://packetstormsecurity.com/files/140240/FreeBSD-Security-Advisory-FreeBSD-SA-16.39.ntp.html

[Issue Tracking, Mitigation, Vendor Advisory] http://support.ntp.org/bin/view/Main/NtpBug3102

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

[Various Sources] http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en

[Vendor Advisory] http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1037354

[Vendor Advisory] http://www.ubuntu.com/usn/USN-3349-1

[Various Sources] https://bto.bluecoat.com/security-advisory/sa139

[Various Sources] https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc

[Third Party Advisory, US Government Resource] https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11

[Various Sources] https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-223/

[Third Party Advisory, US Government Resource] https://www.kb.cert.org/vuls/id/633847

... and 5 more

Scores

CVSS v3 5.3

EPSS 0.1862

EPSS Percentile 95.2%

Attack Vector NETWORK

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

Classification

CWE

CWE-20

Status published

Affected Products (2)

ntp/ntp

n/a/n/a

Timeline

Published Jan 13, 2017

Tracked Since Feb 18, 2026