CVE-2024-45678

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5.7.0 and YubiHSM 2 devices with firmware before 2.4.0 allow an ECDSA secret-key extraction attack (that requires physical access and expensive equipment) in which an electromagnetic side channel is present because of a non-constant-time modular inversion for the Extended Euclidean Algorithm, aka the EUCLEAK issue. Other uses of an Infineon cryptographic library may also be affected."}, {"lang": "es", "value": "Los dispositivos Yubico YubiKey 5 Series con firmware anterior a la versi\u00f3n 5.7.0 y los dispositivos YubiHSM 2 con firmware anterior a la versi\u00f3n 2.4.0 permiten un ataque de extracci\u00f3n de clave secreta ECDSA (que requiere acceso f\u00edsico y equipo costoso) en el que est\u00e1 presente un canal lateral electromagn\u00e9tico debido a una inversi\u00f3n modular de tiempo no constante para el algoritmo euclidiano extendido, tambi\u00e9n conocido como el problema EUCLEAK. Tambi\u00e9n pueden verse afectados otros usos de una librer\u00eda criptogr\u00e1fica de Infineon."}], "id": "CVE-2024-45678", "lastModified": "2026-06-17T07:54:39.063", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "PHYSICAL", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 0.5, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "PHYSICAL", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 0.5, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-45678", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-03T20:05:11.700572Z", "version": "2.0.3"}}]}, "published": "2024-09-03T20:15:08.860", "references": [{"source": "cve@mitre.org", "tags": ["Press/Media Coverage"], "url": "https://arstechnica.com/security/2024/09/yubikeys-are-vulnerable-to-cloning-attacks-thanks-to-newly-discovered-side-channel/"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking"], "url": "https://news.ycombinator.com/item?id=41434500"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://ninjalab.io/eucleak/"}, {"source": "cve@mitre.org", "tags": ["Technical Description"], "url": "https://ninjalab.io/wp-content/uploads/2024/09/20240903_eucleak.pdf"}, {"source": "cve@mitre.org", "tags": ["Mitigation", "Third Party Advisory"], "url": "https://support.yubico.com/hc/en-us/articles/15705749884444"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.yubico.com/support/security-advisories/ysa-2024-03/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-203"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-203"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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