CVEvulnerability

CVE-2018-7170

5.3 MEDIUM Published 2018-03-06 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-03-06
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0 ([email protected])
3.5 LOW — AV:N/AC:M/Au:S/C:N/I:P/A:N

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.

Affected configurations

• ntp ntp (>= 4.2.0 < 4.2.8) • ntp ntp (>= 4.3.0 < 4.3.92) • ntp ntp 4.2.8 • synology router manager (>= 1.1 < 1.1.6-6931-3) • synology skynas (< 6.1.5-15254) • synology virtual diskstation manager (< 6.1.6-15266) • synology diskstation manager (>= 5.2 < 6.1.6-15266) • synology vs960hd firmware (< 2.2.3-1505) • netapp hci • netapp solidfire • hpe hpux-ntp (< c.4.2.8.4.0)

References