VulnerabilityModified
CVE-2016-9042
An exploitable denial of service vulnerability exists in the origin timestamp check functionality of ntpd 4.2.8p9.
MEDIUM 5.9EPSS 3.91%
Does this matter?
Lower severity and a low EPSS score (3.91%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.91% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- ntp/ntp · freebsd/freebsd · hpe/hpux-ntp · siemens/simatic net cp 443-1 opc ua firmware
- Source
- talos-cna@cisco.com
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/97046Permissions Required, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038123Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039427Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3349-1
- https://bto.bluecoat.com/security-advisory/sa147
- https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdfThird Party Advisory
- 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.ascThird Party Advisory
- 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_usThird Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0260Exploit, Mitigation, Third Party Advisory
- 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/97046Permissions Required, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038123Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.