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CVE-2016-7426

7.5 · HIGH

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…

Published Jan 13, 2017CWE-400EPSS 12.37%

Overview

CVE-2016-7426 is a high-severity vulnerability. It was published on January 13, 2017 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refnwtime.org/ntp428p9_release/Refrhn.redhat.com/errata/RHSA-2017-0252.htmlRefsupport.ntp.org/bin/view/Main/NtpBug3071Refsupport.ntp.org/bin/view/Main/SecurityNotice#Recent_VulnerabilitiesRefwww.securityfocus.com/bid/94451Refwww.securitytracker.com/id/1037354Refbto.bluecoat.com/security-advisory/sa139Refh20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_usRefsecurity.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.ascRefusn.ubuntu.com/3707-2/

How CyberStrike helps

Frequently asked questions

What is CVE-2016-7426?

CVE-2016-7426 is a high-severity vulnerability. It was published on January 13, 2017 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2016-7426?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-7426?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-7426?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-7426 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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