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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": "2012-11-06T05:03:37.813", "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"}, {"source": "secalert@redhat.com", "url": "http://cvs.openssl.org/filediff?f=openssl/crypto/bn/bn_nist.c&v1=1.14&v2=1.21"}, {"source": "secalert@redhat.com", "url": "http://eprint.iacr.org/2011/633"}, {"source": "secalert@redhat.com", "url": "http://marc.info/?t=119271238800004"}, {"source": "secalert@redhat.com", "url": "http://openwall.com/lists/oss-security/2011/12/01/6"}, {"source": 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{"bugzilla": {"description": "openssl: ECC private leak (disclosure of TLS server's private key)", "id": "757909", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=757909"}, "csaw": false, "cvss": {"cvss_base_score": "4.0", "cvss_scoring_vector": "AV:N/AC:H/Au:N/C:P/I:P/A:N", "status": "draft"}, "details": ["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."], "name": "CVE-2011-4354", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:3", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 3"}, {"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "openssl096b", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "openssl097a", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openssl098e", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2011-11-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-4354\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-4354"], "statement": "This issue did not affect the versions of openssl as shipped with Red Hat Enterprise Linux 3, 4, 5, or 6 as they did not include support for the ECDH or ECDHE ciphers.", "threat_severity": "Moderate"}