CVE-2016-7433

Description

NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a "root distance that did not include the peer dispersion."

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 28.28% Top 5%
Vendor Advisory redhat.com Vendor Advisory FreeBSD.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org 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
http://rhn.redhat.com/errata/RHSA-2017-0252.html vendor advisory
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
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
http://www.securityfocus.com/bid/94455 vdb entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc vendor advisory
http://support.ntp.org/bin/view/Main/NtpBug3067 vendor advisory mitigation issue tracking
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
http://www.ubuntu.com/usn/USN-3349-1 vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PABKEYX6ABBFJZGMXKH57X756EJUDS3C/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5E3XBBCK5IXOLDAH2E4M3QKIYIHUMMP/ vendor advisory
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMSYVQMMF37MANYEO7KBHOPSC74EKGN/ vendor advisory
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227/
http://www.securityfocus.com/archive/1/539955/100/0/threaded mailing list
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227
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-2016-7433?
CVE-2016-7433 has been scored as a medium severity vulnerability.
How to fix CVE-2016-7433?
To fix CVE-2016-7433, 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-2016-7433 being actively exploited in the wild?
It is possible that CVE-2016-7433 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~28% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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