CVE-2016-7426

Description

NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 33.24% Top 5%
Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory FreeBSD.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 third party advisory
https://usn.ubuntu.com/3707-2/ third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0252.html third party advisory vendor advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities release notes vendor advisory
http://nwtime.org/ntp428p9_release/ third party advisory
https://www.kb.cert.org/vuls/id/633847 third party advisory us government resource
http://www.securitytracker.com/id/1037354 vdb entry third party advisory
https://bto.bluecoat.com/security-advisory/sa139 third party advisory
http://support.ntp.org/bin/view/Main/NtpBug3071 issue tracking vendor advisory mitigation
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc third party advisory vendor advisory
http://www.securityfocus.com/bid/94451 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2016-7426?
CVE-2016-7426 has been scored as a high severity vulnerability.
How to fix CVE-2016-7426?
To fix CVE-2016-7426, 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-2016-7426 being actively exploited in the wild?
It is possible that CVE-2016-7426 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~33% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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