National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-7170 Detail

Current 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.

Source:  MITRE
Description Last Modified:  03/07/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.3 MEDIUM
Vector: AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.6


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 3.5 LOW
Vector: (AV:N/AC:M/Au:S/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 6.8


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): Single
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*    versions from (including) 4.2.0 up to (including) 4.2.8
cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p4:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*    versions from (including) 4.3.0 up to (excluding) 4.3.92
Configuration 2
OR
cpe:2.3:a:synology:diskstation_manager:5.2:*:*:*:*:*:*:*
cpe:2.3:a:synology:diskstation_manager:6.0:*:*:*:*:*:*:*
cpe:2.3:a:synology:diskstation_manager:6.1:*:*:*:*:*:*:*
cpe:2.3:a:synology:router_manager:1.1:*:*:*:*:*:*:*
cpe:2.3:a:synology:skynas:-:*:*:*:*:*:*:*
cpe:2.3:a:synology:virtual_diskstation_manager:-:*:*:*:*:*:*:*
Configuration 3
OR
cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:*
Configuration 4
OR
cpe:2.3:o:slackware:slackware_linux:14.0:*:*:*:*:*:*:*
cpe:2.3:o:slackware:slackware_linux:14.1:*:*:*:*:*:*:*
cpe:2.3:o:slackware:slackware_linux:14.2:*:*:*:*:*:*:*

Denotes Vulnerable Software
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Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-7170
NVD Published Date:
03/06/2018
NVD Last Modified:
10/21/2018