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CVE-2018-7170

5.3 · MEDIUM

ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock s…

Published Mar 6, 2018EPSS 2.69%

Overview

CVE-2018-7170 is a medium-severity vulnerability. It was published on March 6, 2018 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.

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

Refpacketstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.htmlRefsupport.ntp.org/bin/view/Main/NtpBug3415Refwww.securityfocus.com/archive/1/541824/100/0/threadedRefwww.securityfocus.com/bid/103194Refbugzilla.redhat.com/show_bug.cgi?id=1550214Refsecurity.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.ascRefsecurity.gentoo.org/glsa/201805-12Refsecurity.netapp.com/advisory/ntap-20180626-0001/Refsupport.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_usRefwww.synology.com/support/security/Synology_SA_18_13

How CyberStrike helps

Frequently asked questions

What is CVE-2018-7170?

CVE-2018-7170 is a medium-severity vulnerability. It was published on March 6, 2018 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2018-7170?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2018-7170?

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-2018-7170?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-7170 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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