CVE-2016-9042

MEDIUM EPSS 89.2%
Published Jun 4, 20188y ago · Modified Jun 17, 20262w ago
5.9 CVSS 3.1
Medium
Find Similar
Published Jun 4, 2018 8y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
5.9
Exploitability
2.2
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
89.2% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-20 Improper Input Validation Validation

Affected Products 6

VendorProductVersionRange
ntpntp4.2.8any
freebsdfreebsd10.0any
freebsdfreebsd11.0any
hpehpux-ntp* <c.4.2.8.4.0
siemenssimatic_net_cp_443-1_opc_ua_firmware*any
siemenssimatic_net_cp_443-1_opc_ua*any

References 21

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.