CVE-2016-7433 (GCVE-0-2016-7433)

Vulnerability from cvelistv5 – Published: 2017-01-13 16:00 – Updated: 2024-08-06 01:57
VLAI
Summary
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."
Severity
5.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • n/a
Assigner
References
URL Tags
https://h20566.www2.hpe.com/hpsc/doc/public/displ… x_refsource_CONFIRM
http://rhn.redhat.com/errata/RHSA-2017-0252.html vendor-advisoryx_refsource_REDHAT
http://support.ntp.org/bin/view/Main/SecurityNoti… x_refsource_CONFIRM
http://nwtime.org/ntp428p9_release/ x_refsource_CONFIRM
https://www.kb.cert.org/vuls/id/633847 third-party-advisoryx_refsource_CERT-VN
http://www.oracle.com/technetwork/security-adviso… x_refsource_CONFIRM
http://www.securitytracker.com/id/1037354 vdb-entryx_refsource_SECTRACK
https://bto.bluecoat.com/security-advisory/sa139 x_refsource_CONFIRM
http://www.securityfocus.com/bid/94455 vdb-entryx_refsource_BID
https://security.FreeBSD.org/advisories/FreeBSD-S… vendor-advisoryx_refsource_FREEBSD
http://support.ntp.org/bin/view/Main/NtpBug3067 x_refsource_CONFIRM
http://www.securityfocus.com/archive/1/540254/100… mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/archive/1/archive/1/… mailing-listx_refsource_BUGTRAQ
http://lists.opensuse.org/opensuse-updates/2016-1… vendor-advisoryx_refsource_SUSE
http://www.ubuntu.com/usn/USN-3349-1 vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
http://www.huawei.com/en/psirt/security-advisorie… x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.broadcom.com/support/fibre-channel-ne… x_refsource_CONFIRM
http://www.securityfocus.com/archive/1/539955/100… mailing-listx_refsource_BUGTRAQ
https://www.broadcom.com/support/fibre-channel-ne… x_refsource_CONFIRM
http://www.securityfocus.com/archive/1/archive/1/… mailing-listx_refsource_BUGTRAQ
https://cert-portal.siemens.com/productcert/pdf/s… x_refsource_CONFIRM
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11 x_refsource_MISC
Date Public
2016-11-21 00:00
Show details on NVD website
To clipboard 

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              "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227"
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              "name": "20161222 FreeBSD Security Advisory FreeBSD-SA-16:39.ntp",
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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-7433",
    "datePublished": "2017-01-13T16:00:00.000Z",
    "dateReserved": "2016-09-09T00:00:00.000Z",
    "dateUpdated": "2024-08-06T01:57:47.633Z",
    "state": "PUBLISHED"
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      "date": "2026-10-02",
      "epss": "0.09841",
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                "versions": [
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                    "status": "affected",
                    "version": "n/a"
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        ],
        "configurations": [
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            "nodes": [
              {
                "cpeMatch": [
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                    "criteria": "cpe:2.3:a:ntp:ntp:*:p8:*:*:*:*:*:*",
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                    "versionEndIncluding": "4.2.8",
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "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.\""
          },
          {
            "lang": "es",
            "value": "NTP en versiones anteriores a 4.2.8p9 no realiza adecuadamente los c\u00e1lculos de sincronizaci\u00f3n inicial, lo que permite a atacantes remotos un impacto no especificado a trav\u00e9s de vectores desconocidos, relacionado con una \"distancia de ra\u00edz que no inclu\u00eda la dispersi\u00f3n de pares\"."
          }
        ],
        "id": "CVE-2016-7433",
        "lastModified": "2026-06-17T00:53:03.623",
        "metrics": {
          "cvssMetricV2": [
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              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 5.0,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
                "version": "2.0"
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              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
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          ],
          "cvssMetricV30": [
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              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
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                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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              "source": "nvd@nist.gov",
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        "published": "2017-01-13T16:59:00.510",
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        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
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              {
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                "value": "CWE-682"
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            "type": "Primary"
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      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-05-13T02:09:22+00:00",
      "cve": "CVE-2016-7433",
      "id": "CVE-2016-7433",
      "initial_release_date": "2016-11-21T00:00:00+00:00",
      "product_status:fixed": "328",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ntp: Broken initial sync calculations regression",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-7433.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.