Medium severity · published Mar 6, 2018
CVE-2018-7170
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…
5.3
CVSS
2.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DM
Diskstation Manager · Synology
5.2 before 6.1.6-15266 · source: NVD
HC
Hci · Netapp
All versions, or not specified · source: NVD
HP
Hpux-ntp · Hpe
before c.4.2.8.4.0 · source: NVD
NT
Ntp · Ntp
4.2.0 before 4.2.8; 4.3.0 before 4.3.92; 4.2.8; 4.2.8; 4.2.8; 4.2.8; +16 more · source: NVD
RM
Router Manager · Synology
1.1 before 1.1.6-6931-3 · source: NVD
SK
Skynas · Synology
before 6.1.5-15254 · source: NVD
SO
Solidfire · Netapp
All versions, or not specified · source: NVD
VD
Virtual Diskstation Manager · Synology
before 6.1.6-15266 · source: NVD
VF
Vs960hd Firmware · Synology
before 2.2.3-1505 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-7170
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-7170
Third Party Advisory
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug3415
Third Party Advisory
http://www.securityfocus.com/archive/1/541824/100/0/threaded
Third Party Advisory
http://www.securityfocus.com/bid/103194
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1550214
Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
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