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"cpe:2.3:a:openssl:openssl:1.0.0a:*:*:*:*:*:*:*", "matchCriteriaId": "10FF0A06-DA61-4250-B083-67E55E362677", "vulnerable": true}, {"criteria": "cpe:2.3:a:openssl:openssl:1.0.0b:*:*:*:*:*:*:*", "matchCriteriaId": "8A6BA453-C150-4159-B80B-5465EFF83F11", "vulnerable": true}, {"criteria": "cpe:2.3:a:openssl:openssl:1.0.0c:*:*:*:*:*:*:*", "matchCriteriaId": "638A2E69-8AB6-4FEA-852A-FEF16A500C1A", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation."}, {"lang": "es", "value": "El subsistema de criptograf\u00eda de curva el\u00edptica (ECC) de OpenSSL v1.0.0d y versiones anteriores, cuando el algoritmo de firma digital de la curva el\u00edmptica(ECDSA) se utiliza para el conjunto de cifrado ECDHE_ECDSA, no aplica adecuadamente las curvas sobre campos binarios, lo que hace que sea m\u00e1s f\u00e1cil para el atacantes dependientes del contexto determinar las claves privadas a trav\u00e9s de un ataque de oportunidad y un c\u00e1lculo del entramado (lattice)."}], "id": "CVE-2011-1945", "lastModified": "2025-04-11T00:51:21.963", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 4.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2011-05-31T20:55:05.267", "references": [{"source": "secalert@redhat.com", "tags": ["Exploit"], "url": "http://eprint.iacr.org/2011/232.pdf"}, {"source": "secalert@redhat.com", "url": "http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/44935"}, {"source": "secalert@redhat.com", "url": "http://support.apple.com/kb/HT5784"}, {"source": "secalert@redhat.com", "url": "http://www.debian.org/security/2011/dsa-2309"}, {"source": "secalert@redhat.com", "tags": ["US Government Resource"], "url": "http://www.kb.cert.org/vuls/id/536044"}, {"source": "secalert@redhat.com", "tags": ["US Government Resource"], "url": "http://www.kb.cert.org/vuls/id/MAPG-8FENZ3"}, {"source": "secalert@redhat.com", "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:136"}, {"source": "secalert@redhat.com", "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:137"}, {"source": "secalert@redhat.com", "url": "https://hermes.opensuse.org/messages/8760466"}, {"source": "secalert@redhat.com", "url": "https://hermes.opensuse.org/messages/8764170"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit"], "url": "http://eprint.iacr.org/2011/232.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/44935"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://support.apple.com/kb/HT5784"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2011/dsa-2309"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["US Government Resource"], "url": "http://www.kb.cert.org/vuls/id/536044"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["US Government Resource"], "url": "http://www.kb.cert.org/vuls/id/MAPG-8FENZ3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:136"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:137"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://hermes.opensuse.org/messages/8760466"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://hermes.opensuse.org/messages/8764170"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-310"}], "source": "nvd@nist.gov", "type": "Primary"}]}