CVE-2018-7170

MEDIUMMonitor

Published:Mar 6, 2018(8 years ago)

Modified:Jan 14, 2025

Remote ExploitNo Interaction

Vulnerability 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.

Attack Characteristics

Network AccessHigh ComplexityLow PrivilegesNo User Interaction

🤖

AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
ntp	ntp	4.2.0 - 4.2.8	-
ntp	ntp	4.3.0 - 4.3.92	-
ntp	ntp	-

Timeline

Published
CVE disclosed publicly
Mar 6, 20188 years ago
Last Modified
Most recent update
Jan 14, 20251 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20261 month ago

References

http://packetstormsecurity.com/files/146631/Slackware-Security-Advisor...Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug3415Third Party Advisory
http://www.securityfocus.com/archive/1/541824/100/0/threadedThird Party Advisory

CVSS Score

v3.1

5.3/ 10.0

MEDIUM

AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

At a Glance

Affected Products

References

ntp / ntp

http://www.securityfocus.com/bid/103194Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1550214Issue Tracking

https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.ascThird Party Advisory

https://security.gentoo.org/glsa/201805-12Third Party Advisory

https://security.netapp.com/advisory/ntap-20180626-0001/Third Party Advisory

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=...Third Party Advisory

https://www.synology.com/support/security/Synology_SA_18_13Third Party Advisory

http://packetstormsecurity.com/files/146631/Slackware-Security-Advisor...Third Party Advisory

http://support.ntp.org/bin/view/Main/NtpBug3415Third Party Advisory

http://www.securityfocus.com/archive/1/541824/100/0/threadedThird Party Advisory

http://www.securityfocus.com/bid/103194Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1550214Issue Tracking

https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.ascThird Party Advisory

https://security.gentoo.org/glsa/201805-12Third Party Advisory

https://security.netapp.com/advisory/ntap-20180626-0001/Third Party Advisory

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=...Third Party Advisory

https://www.synology.com/support/security/Synology_SA_18_13Third Party Advisory

CVSS v3 Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

Impact

ScopeUnchanged

ConfidentialityNone

IntegrityHigh

AvailabilityNone

Impact Analysis

ConfidentialityNone

NoneLowHigh

IntegrityHigh

NoneLowHigh

AvailabilityNone

NoneLowHigh

CVE-2018-7170

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description