CVE-2016-1549

Description

A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.73% Top 30%
Vendor Advisory FreeBSD.org Vendor Advisory gentoo.org
Affected: NTP Project NTP
Affected: NTPsec Project NTPSec
Published at:
Updated at:

References

Link Tags
http://www.talosintelligence.com/reports/TALOS-2016-0083/ third party advisory technical description mitigation
http://www.securityfocus.com/bid/88200 vdb entry
http://www.securitytracker.com/id/1035705 vdb entry
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
https://security.netapp.com/advisory/ntap-20171004-0002/
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc vendor advisory
https://www.synology.com/support/security/Synology_SA_18_13
https://security.gentoo.org/glsa/201607-15 vendor advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us

Frequently Asked Questions

What is the severity of CVE-2016-1549?
CVE-2016-1549 has been scored as a medium severity vulnerability.
How to fix CVE-2016-1549?
To fix CVE-2016-1549, 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-2016-1549 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-1549 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.
What software or system is affected by CVE-2016-1549?
CVE-2016-1549 affects NTP Project NTP, NTPsec Project NTPSec.
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