{"api_version":"1","generated_at":"2026-04-23T04:33:10+00:00","cve":"CVE-2016-7433","urls":{"html":"https://cve.report/CVE-2016-7433","api":"https://cve.report/api/cve/CVE-2016-7433.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2016-7433","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-7433"},"summary":{"title":"CVE-2016-7433","description":"NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a \"root distance that did not include the peer dispersion.\"","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2017-01-13 16:59:00","updated_at":"2023-11-07 02:34:00"},"problem_types":["CWE-682"],"metrics":[],"references":[{"url":"https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc","name":"FreeBSD-SA-16:39","refsource":"FREEBSD","tags":[],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"200"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11","name":"https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11","refsource":"MISC","tags":[],"title":"Siemens SIMATIC NET CP 443-1 OPC UA | CISA","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/94455","name":"94455","refsource":"BID","tags":[],"title":"NTP CVE-2016-7433 Local Denial of Service Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PABKEYX6ABBFJZGMXKH57X756EJUDS3C/","name":"FEDORA-2016-e8a8561ee7","refsource":"","tags":[],"title":"[SECURITY] Fedora 23 Update: ntp-4.2.6p5-43.fc23 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U5E3XBBCK5IXOLDAH2E4M3QKIYIHUMMP/","name":"FEDORA-2016-7209ab4e02","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 25 Update: ntp-4.2.6p5-43.fc25 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities","name":"http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities","refsource":"CONFIRM","tags":["Vendor Advisory"],"title":"","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securitytracker.com/id/1037354","name":"1037354","refsource":"SECTRACK","tags":[],"title":"ntp Multiple Bugs Let Remote Users Cause the Target Service to Crash - SecurityTracker","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227","name":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227","refsource":"CONFIRM","tags":[],"title":"BSA-2017-227","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://rhn.redhat.com/errata/RHSA-2017-0252.html","name":"RHSA-2017:0252","refsource":"REDHAT","tags":[],"title":"Red Hat Customer Portal","mime":"text/html","httpstatus":"-1","archivestatus":"200"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf","refsource":"CONFIRM","tags":[],"title":"","mime":"application/pdf","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5E3XBBCK5IXOLDAH2E4M3QKIYIHUMMP/","name":"FEDORA-2016-7209ab4e02","refsource":"","tags":[],"title":"[SECURITY] Fedora 25 Update: ntp-4.2.6p5-43.fc25 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us","name":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us","refsource":"CONFIRM","tags":[],"title":"Document Display | HPE Support Center","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227/","name":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227/","refsource":"CONFIRM","tags":[],"title":"BSA-2017-227","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://support.ntp.org/bin/view/Main/NtpBug3067","name":"http://support.ntp.org/bin/view/Main/NtpBug3067","refsource":"CONFIRM","tags":["Issue Tracking","Mitigation","Vendor Advisory"],"title":"","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.ubuntu.com/usn/USN-3349-1","name":"USN-3349-1","refsource":"UBUNTU","tags":[],"title":"USN-3349-1: NTP vulnerabilities | Ubuntu","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/archive/1/539955/100/0/threaded","name":"20161222 FreeBSD Security Advisory FreeBSD-SA-16:39.ntp","refsource":"BUGTRAQ","tags":[],"title":"SecurityFocus","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://www.securityfocus.com/archive/1/540254/100/0/threaded","name":"20170310 [security bulletin] HPESBUX03706 rev.1 - HP-UX NTP service running ntpd, Multiple Vulnerabilities","refsource":"BUGTRAQ","tags":[],"title":"SecurityFocus","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PABKEYX6ABBFJZGMXKH57X756EJUDS3C/","name":"FEDORA-2016-e8a8561ee7","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 23 Update: ntp-4.2.6p5-43.fc23 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://www.securityfocus.com/archive/1/archive/1/540254/100/0/threaded","name":"20170310 [security bulletin] HPESBUX03706 rev.1 - HP-UX NTP service running ntpd, Multiple Vulnerabilities","refsource":"BUGTRAQ","tags":[],"title":"SecurityFocus","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://bto.bluecoat.com/security-advisory/sa139","name":"https://bto.bluecoat.com/security-advisory/sa139","refsource":"CONFIRM","tags":[],"title":"Broadcom Support Portal","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMSYVQMMF37MANYEO7KBHOPSC74EKGN/","name":"FEDORA-2016-c198d15316","refsource":"","tags":[],"title":"[SECURITY] Fedora 24 Update: ntp-4.2.6p5-43.fc24 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://nwtime.org/ntp428p9_release/","name":"http://nwtime.org/ntp428p9_release/","refsource":"CONFIRM","tags":["Release Notes","Vendor Advisory"],"title":"Network Time Foundation Publishes NTP 4.2.8p9 Security Release","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html","name":"openSUSE-SU-2016:3280","refsource":"SUSE","tags":[],"title":"openSUSE-SU-2016:3280-1: moderate: Security update for ntp","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/archive/1/archive/1/539955/100/0/threaded","name":"20161222 FreeBSD Security Advisory FreeBSD-SA-16:39.ntp","refsource":"BUGTRAQ","tags":[],"title":"SecurityFocus","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","name":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","refsource":"CONFIRM","tags":[],"title":"Oracle Critical Patch Update - October 2017","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ILMSYVQMMF37MANYEO7KBHOPSC74EKGN/","name":"FEDORA-2016-c198d15316","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 24 Update: ntp-4.2.6p5-43.fc24 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.kb.cert.org/vuls/id/633847","name":"VU#633847","refsource":"CERT-VN","tags":["Third Party Advisory","US Government Resource"],"title":"Vulnerability Note VU#633847 - NTP.org ntpd contains multiple denial of service vulnerabilities","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en","name":"http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en","refsource":"CONFIRM","tags":[],"title":"Security Advisory - Multiple NTPd Vulnerabilities in Huawei Products","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-7433","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-7433","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2016","cve_id":"7433","vulnerable":"1","versionEndIncluding":"4.2.8","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ntp","cpe5":"ntp","cpe6":"*","cpe7":"p8","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2016-7433","qid":"378199","title":"Virtuozzo Linux Security Update for ntp (VZLSA-2017:0252)"},{"cve":"CVE-2016-7433","qid":"590736","title":"Siemens SIMATIC NET CP 443-1 OPC UA Multiple Vulnerabilities (ICSA-21-159-11)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2016-7433","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a \"root distance that did not include the peer dispersion.\""}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us","refsource":"CONFIRM","url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us"},{"name":"RHSA-2017:0252","refsource":"REDHAT","url":"http://rhn.redhat.com/errata/RHSA-2017-0252.html"},{"name":"http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities","refsource":"CONFIRM","url":"http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities"},{"name":"http://nwtime.org/ntp428p9_release/","refsource":"CONFIRM","url":"http://nwtime.org/ntp428p9_release/"},{"name":"VU#633847","refsource":"CERT-VN","url":"https://www.kb.cert.org/vuls/id/633847"},{"name":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","refsource":"CONFIRM","url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"},{"name":"1037354","refsource":"SECTRACK","url":"http://www.securitytracker.com/id/1037354"},{"name":"https://bto.bluecoat.com/security-advisory/sa139","refsource":"CONFIRM","url":"https://bto.bluecoat.com/security-advisory/sa139"},{"name":"94455","refsource":"BID","url":"http://www.securityfocus.com/bid/94455"},{"name":"FreeBSD-SA-16:39","refsource":"FREEBSD","url":"https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc"},{"name":"http://support.ntp.org/bin/view/Main/NtpBug3067","refsource":"CONFIRM","url":"http://support.ntp.org/bin/view/Main/NtpBug3067"},{"refsource":"BUGTRAQ","name":"20170310 [security bulletin] HPESBUX03706 rev.1 - HP-UX NTP service running ntpd, Multiple Vulnerabilities","url":"http://www.securityfocus.com/archive/1/540254/100/0/threaded"},{"refsource":"BUGTRAQ","name":"20170310 [security bulletin] HPESBUX03706 rev.1 - HP-UX NTP service running ntpd, Multiple Vulnerabilities","url":"http://www.securityfocus.com/archive/1/archive/1/540254/100/0/threaded"},{"refsource":"SUSE","name":"openSUSE-SU-2016:3280","url":"http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html"},{"refsource":"UBUNTU","name":"USN-3349-1","url":"http://www.ubuntu.com/usn/USN-3349-1"},{"refsource":"FEDORA","name":"FEDORA-2016-e8a8561ee7","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PABKEYX6ABBFJZGMXKH57X756EJUDS3C/"},{"refsource":"FEDORA","name":"FEDORA-2016-7209ab4e02","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U5E3XBBCK5IXOLDAH2E4M3QKIYIHUMMP/"},{"refsource":"CONFIRM","name":"http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en","url":"http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en"},{"refsource":"FEDORA","name":"FEDORA-2016-c198d15316","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ILMSYVQMMF37MANYEO7KBHOPSC74EKGN/"},{"refsource":"CONFIRM","name":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227/","url":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227/"},{"refsource":"BUGTRAQ","name":"20161222 FreeBSD Security Advisory FreeBSD-SA-16:39.ntp","url":"http://www.securityfocus.com/archive/1/539955/100/0/threaded"},{"refsource":"CONFIRM","name":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227","url":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227"},{"refsource":"BUGTRAQ","name":"20161222 FreeBSD Security Advisory FreeBSD-SA-16:39.ntp","url":"http://www.securityfocus.com/archive/1/archive/1/539955/100/0/threaded"},{"refsource":"CONFIRM","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf"},{"refsource":"MISC","name":"https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11","url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11"}]}},"nvd":{"publishedDate":"2017-01-13 16:59:00","lastModifiedDate":"2023-11-07 02:34:00","problem_types":["CWE-682"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM"},"exploitabilityScore":3.9,"impactScore":1.4},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ntp:ntp:*:p8:*:*:*:*:*:*","versionEndIncluding":"4.2.8","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2016","CveId":"7433","Ordinal":"94050","Title":"CVE-2016-7433","CVE":"CVE-2016-7433","Year":"2016"},"notes":[{"CveYear":"2016","CveId":"7433","Ordinal":"1","NoteData":"NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a \"root distance that did not include the peer dispersion.\"","Type":"Description","Title":null},{"CveYear":"2016","CveId":"7433","Ordinal":"2","NoteData":"2017-01-13","Type":"Other","Title":"Published"},{"CveYear":"2016","CveId":"7433","Ordinal":"3","NoteData":"2021-07-16","Type":"Other","Title":"Modified"}]}}}