CVE-2018-7170
5.3
MEDIUM
CVSS 3.1
EPSS 0.54%
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.
How to fix CVE-2018-7170
To remediate CVE-2018-7170, upgrade the affected package to a fixed version below.
- —upgrade to 1:4.2.8p11+dfsg-1 or later
Is CVE-2018-7170 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:4.2.8p11+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N |