FKIE_CVE-2016-1550
Vulnerability from fkie_nvd - Published: 2017-01-06 21:59 - Updated: 2026-06-17 00:42
Severity
Summary
An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key.
References
{
"affected": [
{
"affectedData": [
{
"product": "NTP",
"vendor": "NTP Project",
"versions": [
{
"status": "affected",
"version": "4.2.8p3"
},
{
"status": "affected",
"version": "4.2.8p4"
}
]
},
{
"product": "NTPSec",
"vendor": "NTPsec Project",
"versions": [
{
"status": "affected",
"version": "a5fb34b9cc89b92a8fef2f459004865c93bb7f92"
}
]
}
],
"source": "cret@cert.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p4:*:*:*:*:*:*",
"matchCriteriaId": "99C71C00-7222-483B-AEFB-159337BD3C92",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key."
},
{
"lang": "es",
"value": "Existe una vulnerabilidad explotable en el mensaje de autenticaci\u00f3n de la funci\u00f3n del libntp en ntp 4.2.8p4 y NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. Un atacante puede enviar series de mensajes manipulados para intentar el mensaje de direcci\u00f3n de clave."
}
],
"id": "CVE-2016-1550",
"lastModified": "2026-06-17T00:42:09.063",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2017-01-06T21:59:00.413",
"references": [
{
"source": "cret@cert.org",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183647.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184669.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html"
},
{
"source": "cret@cert.org",
"url": "http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html"
},
{
"source": "cret@cert.org",
"url": "http://packetstormsecurity.com/files/136864/Slackware-Security-Advisory-ntp-Updates.html"
},
{
"source": "cret@cert.org",
"url": "http://rhn.redhat.com/errata/RHSA-2016-1552.html"
},
{
"source": "cret@cert.org",
"url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160428-ntpd"
},
{
"source": "cret@cert.org",
"url": "http://www.debian.org/security/2016/dsa-3629"
},
{
"source": "cret@cert.org",
"url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html"
},
{
"source": "cret@cert.org",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
},
{
"source": "cret@cert.org",
"url": "http://www.securityfocus.com/archive/1/538233/100/0/threaded"
},
{
"source": "cret@cert.org",
"url": "http://www.securityfocus.com/archive/1/archive/1/538233/100/0/threaded"
},
{
"source": "cret@cert.org",
"url": "http://www.securityfocus.com/bid/88261"
},
{
"source": "cret@cert.org",
"url": "http://www.securitytracker.com/id/1035705"
},
{
"source": "cret@cert.org",
"tags": [
"Technical Description",
"Third Party Advisory"
],
"url": "http://www.talosintelligence.com/reports/TALOS-2016-0084/"
},
{
"source": "cret@cert.org",
"url": "http://www.ubuntu.com/usn/USN-3096-1"
},
{
"source": "cret@cert.org",
"url": "https://access.redhat.com/errata/RHSA-2016:1141"
},
{
"source": "cret@cert.org",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf"
},
{
"source": "cret@cert.org",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf"
},
{
"source": "cret@cert.org",
"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc"
},
{
"source": "cret@cert.org",
"url": "https://security.gentoo.org/glsa/201607-15"
},
{
"source": "cret@cert.org",
"url": "https://security.netapp.com/advisory/ntap-20171004-0002/"
},
{
"source": "cret@cert.org",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11"
},
{
"source": "cret@cert.org",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11"
},
{
"source": "cret@cert.org",
"url": "https://www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19"
},
{
"source": "cret@cert.org",
"url": "https://www.debian.org/security/2016/dsa-3629"
},
{
"source": "cret@cert.org",
"url": "https://www.kb.cert.org/vuls/id/718152"
},
{
"source": "cret@cert.org",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0084"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183647.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184669.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://packetstormsecurity.com/files/136864/Slackware-Security-Advisory-ntp-Updates.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://rhn.redhat.com/errata/RHSA-2016-1552.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160428-ntpd"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.debian.org/security/2016/dsa-3629"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/538233/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/archive/1/538233/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/88261"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id/1035705"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Technical Description",
"Third Party Advisory"
],
"url": "http://www.talosintelligence.com/reports/TALOS-2016-0084/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-3096-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://access.redhat.com/errata/RHSA-2016:1141"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.gentoo.org/glsa/201607-15"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.netapp.com/advisory/ntap-20171004-0002/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.debian.org/security/2016/dsa-3629"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.kb.cert.org/vuls/id/718152"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0084"
}
],
"sourceIdentifier": "cret@cert.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-200"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.
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