01 Record

CVE-2016-4954

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

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 13.21% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 96.0% of scored records. A rank, not a probability.
NVD base score: 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2016-07-05 01:00Z10 YR AGO

Last updated

2024-08-06 00:46Z2 YR AGO

Reserved

2016-05-23

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.1

Document digest

fd2c5225c13bba551b6d30c9f0cc073b66bb0df709c5664a69323a036dc36b3c

05 Affected products

VendorProductVersionsPlatforms

ntpntpNot specified—

opensuseleapNot specified—

opensuseopensuseNot specified—

oraclesolarisNot specified—

redhatenterprise_linuxNot specified—

siemenssimatic_net_cp_443-1_opc_uaNot specified—

siemenssimatic_net_cp_443-1_opc_ua_firmwareNot specified—

siemenstim_4r-ieNot specified—

siemenstim_4r-ie_dnp3Not specified—

siemenstim_4r-ie_dnp3_firmwareNot specified—

siemenstim_4r-ie_firmwareNot specified—

suselinux_enterprise_desktopNot specified—

suselinux_enterprise_serverNot specified—

susemanagerNot specified—

susemanager_proxyNot specified—

suseopenstack_cloudNot specified—

06 References

lists.opensuse.orgSUSE-SU-2016:1602http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.htmlvendor-advisoryx_refsource_SUSE
www.ubuntu.comUSN-3096-1http://www.ubuntu.com/usn/USN-3096-1vendor-advisoryx_refsource_UBUNTU
lists.fedoraproject.orgFEDORA-2016-c3bd6a3496https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNWGCQLW2VY72NIUYMJOCAKJKTXHDUK2/vendor-advisoryx_refsource_FEDORA
lists.opensuse.orgopenSUSE-SU-2016:1583http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.htmlvendor-advisoryx_refsource_SUSE
security.freebsd.orgFreeBSD-SA-16:24https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.ascvendor-advisoryx_refsource_FREEBSD
lists.opensuse.orgSUSE-SU-2016:1912http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.htmlvendor-advisoryx_refsource_SUSE
lists.fedoraproject.orgFEDORA-2016-89e0874533https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORAMN3Q7TVJ54MBYF75XCJOE3DP7LYHT/vendor-advisoryx_refsource_FEDORA
h20566.www2.hpe.comhttps://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03757en_usx_refsource_CONFIRM
www.securitytracker.com1036037http://www.securitytracker.com/id/1036037vdb-entryx_refsource_SECTRACK
lists.opensuse.orgSUSE-SU-2016:1584http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.htmlvendor-advisoryx_refsource_SUSE
www.oracle.comhttp://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlx_refsource_CONFIRM
support.ntp.orghttp://support.ntp.org/bin/view/Main/NtpBug3044x_refsource_CONFIRM
lists.opensuse.orgSUSE-SU-2016:2094http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.htmlvendor-advisoryx_refsource_SUSE
www.kb.cert.orgVU#321640http://www.kb.cert.org/vuls/id/321640third-party-advisoryx_refsource_CERT-VN
support.ntp.orghttp://support.ntp.org/bin/view/Main/SecurityNoticex_refsource_CONFIRM
lists.fedoraproject.orgFEDORA-2016-50b0066b7fhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3EYJQHJZ2KTVQ7ICEFHXTLZ36MRASWX/vendor-advisoryx_refsource_FEDORA
lists.opensuse.orgopenSUSE-SU-2016:1636http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.htmlvendor-advisoryx_refsource_SUSE
bugs.ntp.orghttp://bugs.ntp.org/3044x_refsource_CONFIRM
lists.opensuse.orgSUSE-SU-2016:1563http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.htmlvendor-advisoryx_refsource_SUSE
security.gentoo.orgGLSA-201607-15https://security.gentoo.org/glsa/201607-15vendor-advisoryx_refsource_GENTOO
packetstormsecurity.comhttp://packetstormsecurity.com/files/137321/Slackware-Security-Advisory-ntp-Updates.htmlx_refsource_MISC
tools.cisco.com20160603 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: June 2016http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpdvendor-advisoryx_refsource_CISCO
www.securityfocus.com20170607 [security bulletin] HPESBHF03757 rev.1 - HPE Network Products including Comware 5 and Comware 7 running NTP, Remote Denial of Service (DoS)http://www.securityfocus.com/archive/1/540683/100/0/threadedmailing-listx_refsource_BUGTRAQ
packetstormsecurity.comhttp://packetstormsecurity.com/files/137322/FreeBSD-Security-Advisory-FreeBSD-SA-16-24.ntp.htmlx_refsource_MISC
lists.opensuse.orgSUSE-SU-2016:1568http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.htmlvendor-advisoryx_refsource_SUSE
www.securityfocus.com20160604 [slackware-security] ntp (SSA:2016-155-01)http://www.securityfocus.com/archive/1/538599/100/0/threadedmailing-listx_refsource_BUGTRAQ
www.securityfocus.com20170607 [security bulletin] HPESBHF03757 rev.1 - HPE Network Products including Comware 5 and Comware 7 running NTP, Remote Denial of Service (DoS)http://www.securityfocus.com/archive/1/archive/1/540683/100/0/threadedmailing-listx_refsource_BUGTRAQ
www.securityfocus.com20160604 FreeBSD Security Advisory FreeBSD-SA-16:24.ntphttp://www.securityfocus.com/archive/1/538600/100/0/threadedmailing-listx_refsource_BUGTRAQ
www.kb.cert.orgVU#321640https://www.kb.cert.org/vuls/id/321640third-party-advisoryx_refsource_CERT-VN
www.securityfocus.com20160604 [slackware-security] ntp (SSA:2016-155-01)http://www.securityfocus.com/archive/1/archive/1/538599/100/0/threadedmailing-listx_refsource_BUGTRAQ
www.securityfocus.com20160604 FreeBSD Security Advisory FreeBSD-SA-16:24.ntphttp://www.securityfocus.com/archive/1/archive/1/538600/100/0/threadedmailing-listx_refsource_BUGTRAQ
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdfx_refsource_CONFIRM
us-cert.cisa.govhttps://us-cert.cisa.gov/ics/advisories/icsa-21-103-11x_refsource_CONFIRM
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdfx_refsource_CONFIRM
us-cert.cisa.govhttps://us-cert.cisa.gov/ics/advisories/icsa-21-159-11x_refsource_MISC

01 Record index

CVE-2016-4954

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2016-4954

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References