{"id":121855,"date":"2025-02-12T02:22:04","date_gmt":"2025-02-12T00:22:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-openssl-3-4-1-s-ustraneniem-uyazvimostej"},"modified":"2025-02-12T02:22:04","modified_gmt":"2025-02-12T00:22:04","slug":"obnovlenie-openssl-3-4-1-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/obnovlenie-openssl-3-4-1-s-ustraneniem-uyazvimostej","title":{"rendered":"Actualizaci\u00f3n de OpenSSL 3.4.1 para corregir vulnerabilidades","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Est\u00e1n disponibles las actualizaciones de la biblioteca criptogr\u00e1fica OpenSSL 3.0.16, 3.1.8, 3.2.4, 3.3.3 y 3.4.1. En las versiones 3.2.4, 3.3.3 y 3.4.1 se ha corregido una vulnerabilidad (CVE-2024-12797) clasificada como de alto riesgo. Esta vulnerabilidad permite llevar a cabo un ataque MITM en conexiones TLS y DTLS. El problema se presenta \u00fanicamente en sistemas que utilizan claves p\u00fablicas RPK (Raw Public Key, RFC 7250) para la autenticaci\u00f3n de clientes. Por defecto, el soporte de RPK est\u00e1 deshabilitado en el lado del cliente y servidores<\/a>. <\/p>\n

La vulnerabilidad es causada porque OpenSSL no devuelve al cliente informaci\u00f3n sobre la falla de autenticaci\u00f3n del servidor al establecer una conexi\u00f3n utilizando el modo de verificaci\u00f3n SSL_VERIFY_PEER, ya que el proceso de negociaci\u00f3n de conexi\u00f3n no se interrumpe correctamente. Un atacante puede llevar a cabo un ataque MITM y redirigir el tr\u00e1fico a su host en lugar del servidor objetivo, y el cliente no recibir\u00e1 informaci\u00f3n de que servidor<\/a> no est\u00e1 autenticado. El problema comienza a partir de la rama OpenSSL 3.2, donde se introdujo la posibilidad de usar RPK en lugar de certificados X.509. <\/p>\n

Adem\u00e1s, en las actualizaciones de OpenSSL se ha corregido la vulnerabilidad CVE-2024-13176, que permite llevar a cabo un ataque de canal lateral para recuperar una clave privada ECDSA mediante el an\u00e1lisis de los retrasos que ocurren durante la generaci\u00f3n de la firma digital. La esencia de la vulnerabilidad es que, para ciertos tipos de curvas el\u00edpticas, como NIST P-521, se pueden aislar c\u00e1lculos con bits altos nulos en el valor invertido del vector de inicializaci\u00f3n (nonce), cuyo tiempo de procesamiento var\u00eda en 300 nanosegundos. <\/p>\n

En el caso de ECDSA, definir incluso unos pocos bits con informaci\u00f3n sobre el vector de inicializaci\u00f3n es suficiente para llevar a cabo un ataque de recuperaci\u00f3n secuencial de toda la clave privada. Para que el ataque tenga \u00e9xito, el atacante debe tener acceso al sistema local donde se ejecuta la aplicaci\u00f3n que genera firmas digitales, o acceso a la red de alta velocidad a la aplicaci\u00f3n con latencias muy bajas. El atacante tambi\u00e9n debe tener la capacidad de analizar con gran precisi\u00f3n el tiempo de generaci\u00f3n de un gran n\u00famero de firmas digitales creadas sobre datos que ya conoce.
\n
Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 OpenSSL 3.0.16, 3.1.8, 3.2.4, 3.3.3 \u0438 3.4.1. \u0412 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 3.2.4, 3.3.3 \u0438 3.4.1 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-12797), \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c MITM-\u0430\u0442\u0430\u043a\u0443 \u043d\u0430 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f TLS \u0438 DTLS. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u0434\u043b\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0435 \u043a\u043b\u044e\u0447\u0438 RPK (Raw Public Key, RFC 7250). \u041f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-121855","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Actualizaci\u00f3n de OpenSSL 3.4.1 con correcci\u00f3n de vulnerabilidades | ProHoster","description":"Est\u00e1n disponibles las actualizaciones de la biblioteca criptogr\u00e1fica OpenSSL 3.0.16, 3.1.8, 3.2.4, 3.3.3 y 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