Description
The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication.
Published: 2016-07-05
Score: 7.5 High
EPSS: 5.5% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2016-5928 The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication.
Ubuntu USN Ubuntu USN USN-3096-1 NTP vulnerabilities
References
Link Providers
http://bugs.ntp.org/3044 cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html cve-icon cve-icon
http://packetstormsecurity.com/files/137321/Slackware-Security-Advisory-ntp-Updates.html cve-icon cve-icon
http://packetstormsecurity.com/files/137322/FreeBSD-Security-Advisory-FreeBSD-SA-16-24.ntp.html cve-icon cve-icon
http://support.ntp.org/bin/view/Main/NtpBug3044 cve-icon cve-icon
http://support.ntp.org/bin/view/Main/SecurityNotice cve-icon cve-icon
http://support.ntp.org/bin/view/Main/SecurityNotice#June_2016_ntp_4_2_8p8_NTP_Securi cve-icon
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpd cve-icon cve-icon
http://www.kb.cert.org/vuls/id/321640 cve-icon cve-icon
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html cve-icon cve-icon
http://www.securityfocus.com/archive/1/538599/100/0/threaded cve-icon cve-icon
http://www.securityfocus.com/archive/1/538600/100/0/threaded cve-icon cve-icon
http://www.securityfocus.com/archive/1/540683/100/0/threaded cve-icon cve-icon
http://www.securityfocus.com/archive/1/archive/1/538599/100/0/threaded cve-icon cve-icon
http://www.securityfocus.com/archive/1/archive/1/538600/100/0/threaded cve-icon cve-icon
http://www.securityfocus.com/archive/1/archive/1/540683/100/0/threaded cve-icon cve-icon
http://www.securitytracker.com/id/1036037 cve-icon cve-icon
http://www.ubuntu.com/usn/USN-3096-1 cve-icon cve-icon
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf cve-icon cve-icon
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf cve-icon cve-icon
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03757en_us cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3EYJQHJZ2KTVQ7ICEFHXTLZ36MRASWX/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORAMN3Q7TVJ54MBYF75XCJOE3DP7LYHT/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNWGCQLW2VY72NIUYMJOCAKJKTXHDUK2/ cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2016-4954 cve-icon
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc cve-icon cve-icon
https://security.gentoo.org/glsa/201607-15 cve-icon cve-icon
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 cve-icon cve-icon
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11 cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2016-4954 cve-icon
https://www.kb.cert.org/vuls/id/321640 cve-icon cve-icon
History

No history.

Subscriptions

Ntp Ntp
Opensuse Leap Opensuse
Oracle Solaris
Siemens Simatic Net Cp 443-1 Opc Ua Simatic Net Cp 443-1 Opc Ua Firmware Tim 4r-ie Tim 4r-ie Dnp3 Tim 4r-ie Dnp3 Firmware Tim 4r-ie Firmware
Suse Linux Enterprise Desktop Linux Enterprise Server Manager Manager Proxy Openstack Cloud
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-06T00:46:39.878Z

Reserved: 2016-05-23T00:00:00.000Z

Link: CVE-2016-4954

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2016-07-05T01:59:01.267

Modified: 2026-05-06T22:30:45.220

Link: CVE-2016-4954

cve-icon Redhat

Severity : Moderate

Publid Date: 2016-06-02T00:00:00Z

Links: CVE-2016-4954 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses