Vulnerability CVE-2018-7170
Published: 2018-03-06

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.

Type:

CWE-noinfo

CVSS2 => (AV:N/AC:M/Au:S/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.5/10
2.9/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Synology -> Diskstation manager 
Synology -> Router manager 
Synology -> Skynas 
Synology -> Virtual diskstation manager 
Synology -> Vs960hd firmware 
Synology -> Vs960hd 
Slackware -> Slackware linux 
NTP -> NTP 
Netapp -> Element software 

 References:
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
http://support.ntp.org/bin/view/Main/NtpBug3415
http://www.securityfocus.com/archive/1/541824/100/0/threaded
http://www.securityfocus.com/bid/103194
https://bugzilla.redhat.com/show_bug.cgi?id=1550214
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
https://security.gentoo.org/glsa/201805-12
https://security.netapp.com/advisory/ntap-20180626-0001/
https://www.synology.com/support/security/Synology_SA_18_13
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