CVE-2016-9042

Public Exploit

Description

An exploitable denial of service vulnerability exists in the origin timestamp check functionality of ntpd 4.2.8p9. A specially crafted unauthenticated network packet can be used to reset the expected origin timestamp for target peers. Legitimate replies from targeted peers will fail the origin timestamp check (TEST2) causing the reply to be dropped and creating a denial of service condition.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.53% Top 20%
Vendor Advisory FreeBSD.org Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org
Affected: Talos Network Time Protocol
Published at:
Updated at:

References

Link Tags
http://www.securitytracker.com/id/1038123 vdb entry third party advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:03.ntp.asc third party advisory vendor advisory
http://www.securitytracker.com/id/1039427 vdb entry third party advisory
http://www.securityfocus.com/bid/97046 permissions required vdb entry third party advisory
http://www.ubuntu.com/usn/USN-3349-1 vendor advisory
http://www.securityfocus.com/archive/1/archive/1/540403/100/0/threaded mailing list
http://seclists.org/fulldisclosure/2017/Nov/7 mailing list
http://www.securityfocus.com/archive/1/540403/100/0/threaded mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KVLFA3J43QFIP4I7HE7KQ5FXSMJEKC6/ vendor advisory
http://seclists.org/fulldisclosure/2017/Sep/62 mailing list
http://www.securityfocus.com/archive/1/archive/1/540464/100/0/threaded mailing list
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us third party advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0260 exploit third party advisory mitigation
http://packetstormsecurity.com/files/142101/FreeBSD-Security-Advisory-FreeBSD-SA-17-03.ntp.html
https://kc.mcafee.com/corporate/index?page=content&id=SB10201
https://support.apple.com/kb/HT208144
https://support.f5.com/csp/article/K39041624
https://bto.bluecoat.com/security-advisory/sa147
http://packetstormsecurity.com/files/142284/Slackware-Security-Advisory-ntp-Updates.html
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf third party advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11

Frequently Asked Questions

What is the severity of CVE-2016-9042?
CVE-2016-9042 has been scored as a medium severity vulnerability.
How to fix CVE-2016-9042?
To fix CVE-2016-9042, 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-2016-9042 being actively exploited in the wild?
It is possible that CVE-2016-9042 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-9042?
CVE-2016-9042 affects Talos Network Time Protocol.
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