CVE-2002-20001

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The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE."}, {"lang": "es", "value": "El Protocolo de Acuerdo de Claves Diffie-Hellman permite a atacantes remotos (del lado del cliente) enviar n\u00fameros arbitrarios que en realidad no son claves p\u00fablicas, y desencadenar costosos c\u00e1lculos de exponenciaci\u00f3n modular DHE del lado del servidor, tambi\u00e9n se conoce como un ataque D(HE)ater. El cliente necesita muy pocos recursos de CPU y ancho de banda de red. El ataque puede ser m\u00e1s perturbador en los casos en los que un cliente puede exigir al servidor que seleccione su mayor tama\u00f1o de clave soportado. El escenario b\u00e1sico del ataque es que el cliente debe afirmar que s\u00f3lo puede comunicarse con DHE, y el servidor debe estar configurado para permitir DHE"}], "id": "CVE-2002-20001", "lastModified": "2026-09-23T13:10:00.153", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-11-11T19:15:07.380", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://dheatattack.com"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://dheatattack.gitlab.io/"}, {"source": "cve@mitre.org", "tags": ["Product", "Third Party Advisory"], "url": "https://github.com/Balasys/dheater"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking"], "url": "https://github.com/mozilla/ssl-config-generator/issues/162"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": 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