fkie_cve-2011-4354
Vulnerability from fkie_nvd
Published
2012-01-27 00:55
Modified
2025-04-11 00:51
Severity ?
Summary
crypto/bn/bn_nist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows remote attackers to obtain the private key of a TLS server via multiple handshake attempts.
References
Impacted products
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"negate": false,
"operator": "OR"
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}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "crypto/bn/bn_nist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows remote attackers to obtain the private key of a TLS server via multiple handshake attempts."
},
{
"lang": "es",
"value": "crypto/bn/bn_nist.c en OpenSSL anterior a v0.9.8h en plataformas de 32 bits, como se utiliza en stunnel y otros productos, en determinadas circunstancias, la participaci\u00f3n ECDH o suites ECDHE cifrado, utiliza un algoritmo de reducci\u00f3n incorrecta modular en la aplicaci\u00f3n de la P-256 y P 384-NIST el\u00edptica curvas, lo que permite a atacantes remotos obtener la clave privada de un servidor de TLS a trav\u00e9s de m\u00faltiples intentos de apret\u00f3n de manos."
}
],
"id": "CVE-2011-4354",
"lastModified": "2025-04-11T00:51:21.963",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2012-01-27T00:55:01.033",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://crypto.di.uminho.pt/CACE/CT-RSA2012-openssl-src.zip"
},
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},
{
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"url": "http://eprint.iacr.org/2011/633"
},
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"url": "http://marc.info/?t=119271238800004"
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"url": "http://www.debian.org/security/2012/dsa-2390"
},
{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=757909"
},
{
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"url": "http://crypto.di.uminho.pt/CACE/CT-RSA2012-openssl-src.zip"
},
{
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"url": "http://cvs.openssl.org/filediff?f=openssl/crypto/bn/bn_nist.c\u0026v1=1.14\u0026v2=1.21"
},
{
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"url": "http://eprint.iacr.org/2011/633"
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"url": "http://openwall.com/lists/oss-security/2011/12/01/6"
},
{
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"url": "http://rt.openssl.org/Ticket/Display.html?id=1593\u0026user=guest\u0026pass=guest"
},
{
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"url": "http://www.debian.org/security/2012/dsa-2390"
},
{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=757909"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-310"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
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