CVE-2016-7431

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 15.65% Top 10%
Vendor Advisory FreeBSD.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory nwtime.org Vendor Advisory ntp.org Vendor Advisory ntp.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03883en_us
http://www.securityfocus.com/bid/94454 vdb entry
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities vendor advisory
http://nwtime.org/ntp428p9_release/ release notes vendor advisory
https://www.kb.cert.org/vuls/id/633847 third party advisory us government resource
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03899en_us
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.securitytracker.com/id/1037354 vdb entry
https://bto.bluecoat.com/security-advisory/sa139
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc vendor advisory
http://support.ntp.org/bin/view/Main/NtpBug3102 issue tracking vendor advisory mitigation
http://www.securityfocus.com/archive/1/540254/100/0/threaded mailing list
http://www.securityfocus.com/archive/1/archive/1/540254/100/0/threaded mailing list
http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html vendor advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03899en_us
http://www.ubuntu.com/usn/USN-3349-1 vendor advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03883en_us
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-223/
http://www.securityfocus.com/archive/1/539955/100/0/threaded mailing list
http://packetstormsecurity.com/files/140240/FreeBSD-Security-Advisory-FreeBSD-SA-16.39.ntp.html
http://www.securityfocus.com/archive/1/archive/1/539955/100/0/threaded mailing list
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11

Frequently Asked Questions

What is the severity of CVE-2016-7431?
CVE-2016-7431 has been scored as a medium severity vulnerability.
How to fix CVE-2016-7431?
To fix CVE-2016-7431, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-7431 being actively exploited in the wild?
It is possible that CVE-2016-7431 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~16% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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