2 lines
3.8 KiB
JSON
2 lines
3.8 KiB
JSON
{"affected":[{"affectedData":[{"defaultStatus":"unknown","product":"wolfSSL","programFiles":["wolfcrypt/src/ecc.c"],"vendor":"wolfSSL","versions":[{"lessThanOrEqual":"5.6.4","status":"affected","version":"0","versionType":"Release"}]}],"source":"facts@wolfssl.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*","matchCriteriaId":"F0F4729E-754A-4CB1-A77D-1E1E97F0F69B","versionEndExcluding":"5.7.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Generating the ECDSA nonce k samples a random number r and then \ntruncates this randomness with a modular reduction mod n where n is the \norder of the elliptic curve. Meaning k = r mod n. The division used \nduring the reduction estimates a factor q_e by dividing the upper two \ndigits (a digit having e.g. a size of 8 byte) of r by the upper digit of \nn and then decrements q_e in a loop until it has the correct size. \nObserving the number of times q_e is decremented through a control-flow \nrevealing side-channel reveals a bias in the most significant bits of \nk. Depending on the curve this is either a negligible bias or a \nsignificant bias large enough to reconstruct k with lattice reduction \nmethods. For SECP160R1, e.g., we find a bias of 15 bits."},{"lang":"es","value":"Generar el nonce k ECDSA muestra un número aleatorio r y luego trunca esta aleatoriedad con una reducción modular mod n donde n es el orden de la curva elíptica. Significado k = r mod n. La división utilizada durante la reducción estima un factor q_e dividiendo los dos dígitos superiores (un dígito que tiene, por ejemplo, un tamaño de 8 bytes) de r por el dígito superior de n y luego disminuye q_e en un bucle hasta que tenga el tamaño correcto. Observar el número de veces que q_e disminuye a través de un canal lateral revelador de flujo de control revela un sesgo en los bits más significativos de k. Dependiendo de la curva, esto es un sesgo insignificante o un sesgo significativo lo suficientemente grande como para reconstruir k con métodos de reducción de celosía. Para SECP160R1, por ejemplo, encontramos un sesgo de 15 bits."}],"id":"CVE-2024-1544","lastModified":"2026-06-17T07:04:27.800","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":4.1,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"exploitabilityScore":0.5,"impactScore":3.6,"source":"facts@wolfssl.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"exploitabilityScore":1.2,"impactScore":3.6,"source":"nvd@nist.gov","type":"Primary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2024-1544","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-08-27T19:14:00.889289Z","version":"2.0.3"}}]},"published":"2024-08-27T19:15:16.547","references":[{"source":"facts@wolfssl.com","url":"https://github.com/wolfSSL/wolfssl/pull/7020"},{"source":"facts@wolfssl.com","tags":["Release Notes"],"url":"https://github.com/wolfSSL/wolfssl/releases/tag/v5.7.2-stable"}],"sourceIdentifier":"facts@wolfssl.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-203"}],"source":"facts@wolfssl.com","type":"Secondary"}]}
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