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f5F5F5:K82570157
HistoryMar 19, 2018 - 12:00 a.m.

K82570157 : NTP vulnerability CVE-2018-7170

2018-03-1900:00:00
my.f5.com
25

7.2 High

AI Score

Confidence

Low

0.002 Low

EPSS

Percentile

56.0%

Security Advisory 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. (CVE-2018-7170)

Impact

An attacker can make adjustments to the system time of the F5 product, disrupting time-sensitive functionality of the F5 product. Only F5 products configured to use symmetric key authentication when synchronizing time with an NTP server are vulnerable.