CVE-2016-7431

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.

• CWE-20

• http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html
• http://nwtime.org/ntp428p9_release/Release Notes, Vendor Advisory
• http://packetstormsecurity.com/files/140240/FreeBSD-Security-Advisory-FreeBSD-SA-16.39.ntp.html
• http://support.ntp.org/bin/view/Main/NtpBug3102Issue Tracking, Mitigation, Vendor Advisory
• http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_VulnerabilitiesVendor Advisory
• http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.securityfocus.com/archive/1/539955/100/0/threaded
• http://www.securityfocus.com/archive/1/540254/100/0/threaded
• http://www.securityfocus.com/archive/1/archive/1/539955/100/0/threaded
• http://www.securityfocus.com/archive/1/archive/1/540254/100/0/threaded
• http://www.securityfocus.com/bid/94454
• http://www.securitytracker.com/id/1037354
• http://www.ubuntu.com/usn/USN-3349-1
• https://bto.bluecoat.com/security-advisory/sa139
• https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
• https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03883en_us
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03899en_us
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03883en_us
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03899en_us
• https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
• https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-223/
• https://www.kb.cert.org/vuls/id/633847Third Party Advisory, US Government Resource
• http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html
• http://nwtime.org/ntp428p9_release/Release Notes, Vendor Advisory
• http://packetstormsecurity.com/files/140240/FreeBSD-Security-Advisory-FreeBSD-SA-16.39.ntp.html
• http://support.ntp.org/bin/view/Main/NtpBug3102Issue Tracking, Mitigation, Vendor Advisory
• http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_VulnerabilitiesVendor Advisory
• http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.securityfocus.com/archive/1/539955/100/0/threaded
• http://www.securityfocus.com/archive/1/540254/100/0/threaded
• http://www.securityfocus.com/archive/1/archive/1/539955/100/0/threaded
• http://www.securityfocus.com/archive/1/archive/1/540254/100/0/threaded
• http://www.securityfocus.com/bid/94454
• http://www.securitytracker.com/id/1037354
• http://www.ubuntu.com/usn/USN-3349-1
• https://bto.bluecoat.com/security-advisory/sa139
• https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
• https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03883en_us
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03899en_us
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03883en_us
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03899en_us
• https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
• https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-223/
• https://www.kb.cert.org/vuls/id/633847Third Party Advisory, US Government Resource

Published

Jan 13, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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