CVE-2018-7170

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.

5.3

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.97% Top 25%

Vendor Advisory gentoo.org Vendor Advisory FreeBSD.org

Affected: n/a n/a

References

Link	Tags
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html	vdb entry third party advisory
https://security.gentoo.org/glsa/201805-12	third party advisory vendor advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc	third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20180626-0001/	third party advisory
http://www.securityfocus.com/archive/1/541824/100/0/threaded	mailing list vdb entry third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1550214	issue tracking third party advisory
http://support.ntp.org/bin/view/Main/NtpBug3415	third party advisory
https://www.synology.com/support/security/Synology_SA_18_13	third party advisory
http://www.securityfocus.com/bid/103194	vdb entry third party advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us	third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-7170?: CVE-2018-7170 has been scored as a medium severity vulnerability.
How to fix CVE-2018-7170?: To fix CVE-2018-7170, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7170 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2018-7170 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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