fkie_cve-2016-6210
Vulnerability from fkie_nvd
Published
2017-02-13 17:59
Modified
2025-04-20 01:37
Severity ?
Summary
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.
References
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:openbsd:openssh:*:p2:*:*:*:*:*:*",
"matchCriteriaId": "4AFA4267-E15B-4826-9B98-63F68AB1627F",
"versionEndIncluding": "7.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided."
},
{
"lang": "es",
"value": "sshd en OpenSSH en versiones anteriores a 7.3, cuando SHA256 o SHA512 son utilizados para el hashing de la contrase\u00f1a del usuario, utiliza BLOWFISH hashing en una contrase\u00f1a est\u00e1tica cuando no existe el nombre de usuario, lo que permite a atacantes remotos enumerar usuarios aprovechando la diferencia de tiempo entre respuestas cuando se proporciona una contrase\u00f1a grande."
}
],
"id": "CVE-2016-6210",
"lastModified": "2025-04-20T01:37:25.860",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.0"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2017-02-13T17:59:00.153",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://seclists.org/fulldisclosure/2016/Jul/51"
},
{
"source": "cve@mitre.org",
"url": "http://www.debian.org/security/2016/dsa-3626"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/91812"
},
{
"source": "cve@mitre.org",
"url": "http://www.securitytracker.com/id/1036319"
},
{
"source": "cve@mitre.org",
"url": "https://access.redhat.com/errata/RHSA-2017:2029"
},
{
"source": "cve@mitre.org",
"url": "https://access.redhat.com/errata/RHSA-2017:2563"
},
{
"source": "cve@mitre.org",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
},
{
"source": "cve@mitre.org",
"url": "https://security.gentoo.org/glsa/201612-18"
},
{
"source": "cve@mitre.org",
"url": "https://security.netapp.com/advisory/ntap-20190206-0001/"
},
{
"source": "cve@mitre.org",
"url": "https://www.exploit-db.com/exploits/40113/"
},
{
"source": "cve@mitre.org",
"url": "https://www.exploit-db.com/exploits/40136/"
},
{
"source": "cve@mitre.org",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://www.openssh.com/txt/release-7.3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://seclists.org/fulldisclosure/2016/Jul/51"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.debian.org/security/2016/dsa-3626"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/91812"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id/1036319"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://access.redhat.com/errata/RHSA-2017:2029"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://access.redhat.com/errata/RHSA-2017:2563"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.gentoo.org/glsa/201612-18"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.netapp.com/advisory/ntap-20190206-0001/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.exploit-db.com/exploits/40113/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.exploit-db.com/exploits/40136/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://www.openssh.com/txt/release-7.3"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-200"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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