{"id":88071,"date":"2020-07-12T01:43:42","date_gmt":"2020-07-11T23:43:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-tor-0-3-5-11-0-4-2-8-i-0-4-3-6-s-ustraneniem-dos-uyazvimosti"},"modified":"2020-07-12T01:43:42","modified_gmt":"2020-07-11T23:43:42","slug":"obnovlenie-tor-0-3-5-11-0-4-2-8-i-0-4-3-6-s-ustraneniem-dos-uyazvimosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/obnovlenie-tor-0-3-5-11-0-4-2-8-i-0-4-3-6-s-ustraneniem-dos-uyazvimosti","title":{"rendered":"Actualizaci\u00f3n de Tor 0.3.5.11, 0.4.2.8 y 0.4.3.6 con la correcci\u00f3n de vulnerabilidad DoS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Presentados<\/a><\/noindex> actualizaciones correctivas del kit de herramientas de Tor (0.3.5.11, 0.4.2.8, 0.4.3.6 y 4.4.2-alpha), utilizado para organizar el funcionamiento de la red an\u00f3nima Tor. En las nuevas versiones se ha corregido vulnerabilidad<\/a><\/noindex> (CVE-2020-15572), causada por un acceso a una \u00e1rea de memoria fuera de los l\u00edmites del b\u00fafer asignado. La vulnerabilidad permite a un atacante remoto provocar un fallo en el proceso de tor. El problema se manifiesta solo cuando se compila con la biblioteca NSS (por defecto, Tor se compila con OpenSSL, y el uso de NSS requiere especificar el flag \u2018--enable-nss\u2019).<\/p>\n

Adicionalmente presentado<\/a><\/noindex> el plan de descontinuaci\u00f3n del soporte de la segunda versi\u00f3n del protocolo de servicios onion (anteriormente conocidos como servicios ocultos). Hace un a\u00f1o y medio, en la versi\u00f3n 0.3.2.9, a los usuarios se les una t\u00e9cnica similar de sustituci\u00f3n de solicitudes<\/a><\/noindex> ofreci\u00f3 la tercera versi\u00f3n del protocolo para servicios onion, notable por la transici\u00f3n a direcciones de 56 caracteres, una protecci\u00f3n m\u00e1s s\u00f3lida contra filtraciones de datos a trav\u00e9s de servidores de directorio, una estructura modular ampliable y el uso de algoritmos SHA3, ed25519 y curve25519 en lugar de SHA1, DH y RSA-1024. <\/p>\n

La segunda versi\u00f3n del protocolo fue desarrollada hace aproximadamente 15 a\u00f1os y, debido al uso de algoritmos obsoletos en las condiciones actuales, no puede considerarse segura. Dado el fin del tiempo de soporte para las ramas antiguas, actualmente cualquier puerta de enlace Tor relevante admite la tercera versi\u00f3n del protocolo, que se ofrece por defecto al crear nuevos servicios onion. <\/p>\n

El 15 de septiembre de 2020, Tor comenzar\u00e1 a advertir a los operadores y clientes sobre la obsolescencia de la segunda versi\u00f3n del protocolo. El 15 de julio de 2021, el soporte para la segunda versi\u00f3n del protocolo ser\u00e1 eliminado del c\u00f3digo, y el 15 de octubre de 2021, se lanzar\u00e1 una nueva versi\u00f3n estable de Tor sin soporte para el antiguo protocolo. As\u00ed, los propietarios de servicios onion antiguos disponen de 16 meses para migrar a la nueva versi\u00f3n del protocolo, que requiere la generaci\u00f3n de una nueva direcci\u00f3n de 56 caracteres para el servicio.<\/p>\n

<\/a><\/noindex><\/p>\n

Fuente: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f Tor (0.3.5.11, 0.4.2.8, 0.4.3.6 \u0438 4.4.2-alpha), \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u0430\u043d\u043e\u043d\u0438\u043c\u043d\u043e\u0439 \u0441\u0435\u0442\u0438 Tor. \u0412 \u043d\u043e\u0432\u044b\u0445 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-15572), \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u0430\u044f \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0435\u043c \u043a \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u0432\u043d\u0435 \u0433\u0440\u0430\u043d\u0438\u0446 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u043c\u0443 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443 \u0438\u043d\u0438\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043a\u0440\u0430\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 tor. \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 \u043f\u0440\u0438 \u0441\u0431\u043e\u0440\u043a\u0435 \u0441 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u043e\u0439 NSS (\u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e Tor \u0441\u043e\u0431\u0438\u0440\u0430\u0435\u0442\u0441\u044f \u0441 OpenSSL, \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-88071","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 Tor 0.3.5.11, 0.4.2.8 y 0.4.3.6 con correcci\u00f3n de vulnerabilidad DoS | ProHoster","description":"Se han presentado actualizaciones correctivas del kit de herramientas de Tor (0.3.5.11, 0.4.2.8, 0.4.3.6 y 4.4.2-alpha), utilizado para la 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