{"id":100517,"date":"2021-06-15T10:22:36","date_gmt":"2021-06-15T08:22:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-novoj-stabilnoj-vetki-tor-0-4-6"},"modified":"2021-06-15T10:22:36","modified_gmt":"2021-06-15T08:22:36","slug":"vypusk-novoj-stabilnoj-vetki-tor-0-4-6","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/vypusk-novoj-stabilnoj-vetki-tor-0-4-6","title":{"rendered":"Lanzamiento de la nueva rama estable Tor 0.4.6","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha lanzado la versi\u00f3n del conjunto de herramientas Tor 0.4.6.5, que se utiliza para organizar el funcionamiento de la red an\u00f3nima Tor. La versi\u00f3n Tor 0.4.6.5 se reconoce como la primera versi\u00f3n estable de la rama 0.4.6, que ha estado en desarrollo durante los \u00faltimos cinco meses. La rama 0.4.6 ser\u00e1 acompa\u00f1ada dentro del ciclo de soporte est\u00e1ndar \u2014 la emisi\u00f3n de actualizaciones se detendr\u00e1 dentro de 9 meses o 3 meses despu\u00e9s del lanzamiento de la rama 0.4.7.x. Se ha garantizado un ciclo de soporte prolongado (LTS) para la rama 0.3.5, cuyos actualizaciones se emitir\u00e1n hasta el 1 de febrero de 2022. Al mismo tiempo, se han formado las versiones Tor 0.3.5.15, 0.4.4.9 y 0.4.5.9 en las que se han corregido vulnerabilidades de DoS que permit\u00edan causar la interrupci\u00f3n del servicio a los clientes de los servicios onion y de los rel\u00e9s.      <\/p>\n<p>Principales cambios:  <\/p>\n<ul>\n<li class=\"l\"> Se ha a\u00f1adido la capacidad de crear servicios onion basados en la tercera versi\u00f3n del protocolo con autenticaci\u00f3n de acceso de clientes a trav\u00e9s de archivos en el directorio 'authorized_clients'.\n<li class=\"l\"> Para los rel\u00e9s se ha a\u00f1adido un indicador que permite al operador del nodo entender que el rel\u00e9 no est\u00e1 incluido en el consenso durante el proceso de elecci\u00f3n <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-dusseldorf\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3444\">servidores<\/a> de directorios (por ejemplo, cuando hay demasiados rel\u00e9s en una \u00fanica direcci\u00f3n IP).\n<li class=\"l\"> Se ha proporcionado la posibilidad de transmitir informaci\u00f3n sobre la sobrecarga en los datos de extrainfo, que puede ser utilizada para el balanceo de carga en la red. La transmisi\u00f3n de m\u00e9tricas se controla mediante la opci\u00f3n OverloadStatistics en torrc.\n<li class=\"l\"> En el subsistema de protecci\u00f3n contra ataques DoS se ha a\u00f1adido la posibilidad de limitar la intensidad de las conexiones de clientes a los rel\u00e9s.\n<li class=\"l\"> En los rel\u00e9s se ha implementado la publicaci\u00f3n de estad\u00edsticas sobre el n\u00famero de servicios onion basados en la tercera versi\u00f3n del protocolo y el volumen de su tr\u00e1fico.\n<li class=\"l\"> Se ha eliminado del c\u00f3digo de los rel\u00e9s el soporte para la opci\u00f3n DirPorts, que no se utiliza para este tipo de nodos.\n<li class=\"l\"> Se ha realizado una refactorizaci\u00f3n del c\u00f3digo. El subsistema de protecci\u00f3n contra ataques DoS ha sido movido al gestor subsys.\n<li class=\"l\"> Se ha descontinuado el soporte para los antiguos servicios onion basados en la segunda versi\u00f3n del protocolo, que fue declarado obsoleto hace un a\u00f1o. Se espera que la eliminaci\u00f3n completa del c\u00f3digo relacionado con la segunda versi\u00f3n del protocolo ocurra en oto\u00f1o. La segunda versi\u00f3n del protocolo fue desarrollada hace aproximadamente 16 a\u00f1os y, debido al uso de algoritmos obsoletos, no puede considerarse segura en las condiciones actuales. Hace dos a\u00f1os y medio, con el lanzamiento 0.3.2.9, se ofreci\u00f3 a los usuarios la tercera versi\u00f3n del protocolo para servicios onion, que se caracterizaba por la transici\u00f3n a direcciones de 56 caracteres y una protecci\u00f3n m\u00e1s confiable contra filtraciones de datos. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1917\">servidores<\/a> directorios, una estructura modular ampliable y el uso de algoritmos SHA3, ed25519 y curve25519 en lugar de SHA1, DH y RSA-1024.\n<li class=\"l\"> Se han corregido vulnerabilidades:\n<ul>\n<li class=\"l\"> CVE-2021-34550 \u2014 acceso a la memoria fuera del b\u00fafer asignado en el c\u00f3digo para analizar descriptores de servicios onion basados en la tercera versi\u00f3n del protocolo. Un atacante puede, mediante la colocaci\u00f3n de un descriptor de servicio onion especialmente dise\u00f1ado, causar el fallo de cualquier cliente que intente acceder a este servicio onion.\n<li class=\"l\"> CVE-2021-34549 \u2014 posibilidad de realizar un ataque para provocar una denegaci\u00f3n de servicio en rel\u00e9s. Un atacante puede crear cadenas con identificadores que causan colisiones en la funci\u00f3n hash, cuyo procesamiento provoca una alta carga en la CPU.\n<li class=\"l\"> CVE-2021-34548 \u2014 un rel\u00e9 podr\u00eda haber realizado el spoofing de las celdas RELAY_END y RELAY_RESOLVED en flujos semiclosed, lo que permit\u00eda cerrar un flujo que se hab\u00eda creado sin la participaci\u00f3n de este rel\u00e9.\n<li class=\"l\"> TROVE-2021-004 \u2014 se han a\u00f1adido verificaciones adicionales de fallos al acceder al generador de n\u00fameros aleatorios OpenSSL (con la implementaci\u00f3n RNG por defecto en OpenSSL, tales fallos no se manifiestan).                <\/ul>\n<p>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55327\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f Tor 0.4.6.5, \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\u0435\u0440\u0441\u0438\u044f Tor 0.4.6.5 \u043f\u0440\u0438\u0437\u043d\u0430\u043d\u0430 \u043f\u0435\u0440\u0432\u044b\u043c \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u043e\u043c \u0432\u0435\u0442\u043a\u0438 0.4.6, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u043b\u0430\u0441\u044c \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0435 \u043f\u044f\u0442\u044c \u043c\u0435\u0441\u044f\u0446\u0435\u0432. \u0412\u0435\u0442\u043a\u0430 0.4.6 \u0431\u0443\u0434\u0435\u0442 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u0442\u044c\u0441\u044f \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u0448\u0442\u0430\u0442\u043d\u043e\u0433\u043e \u0446\u0438\u043a\u043b\u0430 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u044f &#8212; \u0432\u044b\u043f\u0443\u0441\u043a \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0451\u043d \u0447\u0435\u0440\u0435\u0437 9 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0438\u043b\u0438 \u0447\u0435\u0440\u0435\u0437 3 \u043c\u0435\u0441\u044f\u0446\u0430 \u043f\u043e\u0441\u043b\u0435 \u0440\u0435\u043b\u0438\u0437\u0430 \u0432\u0435\u0442\u043a\u0438 0.4.7.x. \u0414\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0446\u0438\u043a\u043b \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 (LTS) [&hellip;]<\/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-100517","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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