CVE-2018-7170

CVSS 3.1 Score 5.3 of 10 (medium)

Details

Published Mar 6, 2018
Updated: Jan 14, 2025

Summary

CVE-2018-7170 is a vulnerability affecting the ntp service in versions 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92. It allows authenticated users with knowledge of the private symmetric key to create an excessive number of ephemeral associations. By doing so, they can manipulate the clock selection process of ntpd, initiating a Sybil attack and ultimately, modifying a victim's clock. This vulnerability is a result of an incomplete fix for a previously identified issue, CVE-2016-1549.

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