CVE-2016-9042
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 3.9% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 3.9% in the next 30 days (EPSS).
- Severity: 5.9 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 3.9% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Ntp 4.2.8
- Freebsd 10.0
- Freebsd 11.0
- Hpe hpux-ntp < c.4.2.8.4.0
- Siemens Simatic Net Cp 443-1 Opc Ua Firmware
Attack profile CVSS 3.1 · 5.9
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2016-9042.md and follow it. Check whether this project is affected by CVE-2016-9042. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0260
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0260
References
- http://packetstormsecurity.com/files/142101/FreeBSD-Security-Advisory-FreeBSD-SA-17-03.ntp.html
- http://packetstormsecurity.com/files/142284/Slackware-Security-Advisory-ntp-Updates.html
- http://seclists.org/fulldisclosure/2017/Nov/7
- http://seclists.org/fulldisclosure/2017/Sep/62
- http://www.securityfocus.com/archive/1/540403/100/0/threaded
- http://www.securityfocus.com/archive/1/archive/1/540403/100/0/threaded
- http://www.securityfocus.com/archive/1/archive/1/540464/100/0/threaded
- http://www.securityfocus.com/bid/97046
- http://www.securitytracker.com/id/1038123
- http://www.securitytracker.com/id/1039427
- http://www.ubuntu.com/usn/USN-3349-1
- https://bto.bluecoat.com/security-advisory/sa147
- https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
- https://kc.mcafee.com/corporate/index?page=content&id=SB10201
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KVLFA3J43QFIP4I7HE7KQ5FXSMJEKC6/
- https://security.FreeBSD.org/advisories/FreeBSD-SA-17:03.ntp.asc
- https://support.apple.com/kb/HT208144
- https://support.f5.com/csp/article/K39041624
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
- https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0260
- http://packetstormsecurity.com/files/142101/FreeBSD-Security-Advisory-FreeBSD-SA-17-03.ntp.html
- http://packetstormsecurity.com/files/142284/Slackware-Security-Advisory-ntp-Updates.html
- http://seclists.org/fulldisclosure/2017/Nov/7
- http://seclists.org/fulldisclosure/2017/Sep/62