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CVE-2016-1549

6.5 · MEDIUM

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 3e160db8dc248a0bcb053b5…

Published Jan 6, 2017CWE-19EPSS 3.12%

Overview

CVE-2016-1549 is a medium-severity vulnerability. It was published on January 6, 2017 and has a CVSS 3.0 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlRefwww.securityfocus.com/bid/88200Refwww.securitytracker.com/id/1035705Refwww.talosintelligence.com/reports/TALOS-2016-0083/Refsecurity.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.ascRefsecurity.gentoo.org/glsa/201607-15Refsecurity.netapp.com/advisory/ntap-20171004-0002/Refsupport.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_usRefwww.synology.com/support/security/Synology_SA_18_13Refwww.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-1549?

CVE-2016-1549 is a medium-severity vulnerability. It was published on January 6, 2017 and has a CVSS 3.0 base score of 6.5 (MEDIUM).

How severe is CVE-2016-1549?

This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2016-1549?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-1549?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-1549 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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