fkie_cve-2011-0539
Vulnerability from fkie_nvd
Published
2011-02-10 18:00
Modified
2024-11-21 01:24
Severity ?
Summary
The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks.
References
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:openbsd:openssh:5.6:*:*:*:*:*:*:*",
"matchCriteriaId": "0C5D4A9B-1194-4D63-AAC2-8701C890BB0D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:5.7:*:*:*:*:*:*:*",
"matchCriteriaId": "F75DB5AE-E99D-4827-B290-823E015AEE34",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks."
},
{
"lang": "es",
"value": "La funci\u00f3n key_certify en usr.bin/ssh/key.c en OpenSSH v5.6 y v5.7 al generar los certificados de herencia con la opci\u00f3n de l\u00ednea de comandos -t en ssh-keygen, no se inicializa el campo nonce, que podr\u00eda permitir a atacantes remotos obtener contenido sensible de la pila de memoria o que sea m\u00e1s f\u00e1cil de llevar a cabo ataques de colisi\u00f3n hash."
}
],
"id": "CVE-2011-0539",
"lastModified": "2024-11-21T01:24:15.003",
"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
}
]
},
"published": "2011-02-10T18:00:57.660",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"
},
{
"source": "secalert@redhat.com",
"url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"
},
{
"source": "secalert@redhat.com",
"url": "http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10673"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/43181"
},
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/44269"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.openssh.com/txt/legacy-cert.adv"
},
{
"source": "secalert@redhat.com",
"url": "http://www.openwall.com/lists/oss-security/2011/02/04/2"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/46155"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securitytracker.com/id?1025028"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2011/0284"
},
{
"source": "secalert@redhat.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65163"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10673"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/43181"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/44269"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.openssh.com/txt/legacy-cert.adv"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2011/02/04/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/46155"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id?1025028"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2011/0284"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65163"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-264"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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