CVE-2024-37880

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}, {"affectedData": [{"cpes": ["cpe:2.3:a:pq-crystals:kyber:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "kyber", "vendor": "pq-crystals", "versions": [{"lessThan": "2024-06-03", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:pq-crystals:kyber:*:*:*:*:*:*:*:*", "matchCriteriaId": "346EEBCC-A9CB-4394-BB8B-9E741FB4331F", "versionEndExcluding": "2024-06-03", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Kyber reference implementation before 9b8d306, when compiled by LLVM Clang through 18.x with some common optimization options, has a timing side channel that allows attackers to recover an ML-KEM 512 secret key in minutes. This occurs because poly_frommsg in poly.c does not prevent Clang from emitting a vulnerable secret-dependent branch."}, {"lang": "es", "value": "La implementaci\u00f3n de referencia de Kyber anterior a 9b8d306, cuando la compila LLVM Clang hasta 18.x con algunas opciones de optimizaci\u00f3n comunes, tiene un canal lateral de temporizaci\u00f3n que permite a los atacantes recuperar una clave secreta ML-KEM 512 en minutos. Esto ocurre porque poly_frommsg en poly.c no impide que Clang emita una rama vulnerable dependiente de un secreto."}], "id": "CVE-2024-37880", "lastModified": "2026-06-17T07:38:58.583", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-37880", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-07-19T20:22:02.448449Z", "version": "2.0.3"}}]}, "published": "2024-06-10T02:15:47.160", "references": [{"source": "cve@mitre.org", "tags": ["Exploit"], "url": "https://github.com/antoonpurnal/clangover"}, {"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://github.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c"}, {"source": "cve@mitre.org", "tags": ["Not Applicable"], "url": "https://news.ycombinator.com/item?id=40577486"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://pqshield.com/pqshield-plugs-timing-leaks-in-kyber-ml-kem-to-improve-pqc-implementation-maturity/"}, {"source": "cve@mitre.org", "tags": ["Exploit"], "url": "https://twitter.com/purnaltoon/status/1797644696568959476"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit"], "url": "https://github.com/antoonpurnal/clangover"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Not Applicable"], "url": "https://news.ycombinator.com/item?id=40577486"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://pqshield.com/pqshield-plugs-timing-leaks-in-kyber-ml-kem-to-improve-pqc-implementation-maturity/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit"], "url": "https://twitter.com/purnaltoon/status/1797644696568959476"}], "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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