{"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\/it\/blog\/news\/vypusk-novoj-stabilnoj-vetki-tor-0-4-6","title":{"rendered":"Uscita di un nuovo ramo stabile di Tor 0.4.6","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00c8 stata rilasciata la versione 0.4.6.5 del toolkit Tor, utilizzato per l'organizzazione della rete anonima Tor. La versione 0.4.6.5 \u00e8 considerata il primo rilascio stabile della serie 0.4.6, sviluppata negli ultimi cinque mesi. La serie 0.4.6 sar\u00e0 supportata all'interno del ciclo di supporto standard \u2014 il rilascio di aggiornamenti terminer\u00e0 dopo 9 mesi o 3 mesi dopo il rilascio della serie 0.4.7.x. Un ciclo di supporto lungo (LTS) \u00e8 garantito per la serie 0.3.5, per la quale gli aggiornamenti saranno rilasciati fino al 1 febbraio 2022. Sono state inoltre rilasciate le versioni Tor 0.3.5.15, 0.4.4.9 e 0.4.5.9, in cui sono state risolte vulnerabilit\u00e0 DoS che permettevano di causare interruzioni nei servizi onion e nei relay.      <\/p>\n<p>Variazioni principali:  <\/p>\n<ul>\n<li class=\"l\"> \u00c8 stata aggiunta la possibilit\u00e0 di creare servizi onion basati sulla terza versione del protocollo con autenticazione dell'accesso dei clienti tramite file nella directory 'authorized_clients'.\n<li class=\"l\"> Per i relay \u00e8 stato aggiunto un flag che consente all'operatore del nodo di capire che il relay non \u00e8 incluso nel consenso durante la selezione <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/dts-dusseldorf\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3444\">server<\/a> delle directory (ad esempio, quando ci sono troppi relay su un singolo indirizzo IP).\n<li class=\"l\"> \u00c8 stata abilitata la possibilit\u00e0 di trasmettere informazioni sul sovraccarico nei dati extrainfo, che possono essere utilizzati per il bilanciamento del carico nella rete. La trasmissione della metrica \u00e8 controllata tramite l'opzione OverloadStatistics in torrc.\n<li class=\"l\"> Nel sottosistema di protezione contro attacchi DoS \u00e8 stata aggiunta la possibilit\u00e0 di limitare l'intensit\u00e0 delle connessioni dei clienti ai relay.\n<li class=\"l\"> Nei relay \u00e8 stata implementata la pubblicazione delle statistiche sul numero di servizi onion basati sulla terza versione del protocollo e sul volume del loro traffico.\n<li class=\"l\"> Dal codice per i relay \u00e8 stata rimossa la supporto per l'opzione DirPorts, che non \u00e8 utilizzata per questo tipo di nodi.\n<li class=\"l\"> \u00c8 stata effettuata una rifattorizzazione del codice. Il sottosistema di protezione contro attacchi DoS \u00e8 stato spostato nel gestore subsys.\n<li class=\"l\"> \u00c8 stata interrompa la supporto per i vecchi servizi onion basati sulla seconda versione del protocollo, che \u00e8 stata dichiarata obsoleta un anno fa. L'eliminazione completa del codice legato alla seconda versione del protocollo \u00e8 prevista per l'autunno. La seconda versione del protocollo \u00e8 stata sviluppata circa 16 anni fa e, a causa dell'uso di algoritmi obsoleti, non pu\u00f2 essere considerata sicura nelle attuali condizioni. Due anni e mezzo fa, con il rilascio 0.3.2.9, agli utenti \u00e8 stata proposta la terza versione del protocollo per i servizi onion, nota per il passaggio a indirizzi di 56 caratteri, con una protezione pi\u00f9 affidabile contro le perdite di dati. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/\"   title=\"servers\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1917\">servers<\/a> directory, una struttura modulare espandibile e l'uso degli algoritmi SHA3, ed25519 e curve25519 invece di SHA1, DH e RSA-1024.\n<li class=\"l\"> Sono state risolte le vulnerabilit\u00e0:\n<ul>\n<li class=\"l\"> CVE-2021-34550 \u2014 accesso a una zona di memoria al di fuori del buffer assegnato nel codice per l'analisi dei descrittori dei servizi onion basati sulla terza versione del protocollo. Un attaccante pu\u00f2, attraverso l'inserimento di un descrittore di servizio onion appositamente formattato, provocare il crash di qualsiasi client che tenti di accedere a questo servizio onion.\n<li class=\"l\"> CVE-2021-34549 \u2014 possibilit\u00e0 di condurre un attacco per causare la negazione di servizio nei relay. Un attaccante pu\u00f2 generare catene con identificatori che causano collisioni nella funzione hash, il cui trattamento provoca un elevato carico sulla CPU.\n<li class=\"l\"> CVE-2021-34548 \u2014 un relay poteva eseguire uno spoofing delle celle RELAY_END e RELAY_RESOLVED in flussi parzialmente chiusi, consentendo la chiusura di un flusso creato senza il coinvolgimento di quel relay.\n<li class=\"l\"> TROVE-2021-004 \u2014 sono state aggiunte ulteriori verifiche sui fallimenti nella comunicazione con il generatore di numeri casuali OpenSSL (con l'implementazione RNG predefinita in OpenSSL, tali fallimenti non si manifestano).                <\/ul>\n<p>Fonte: <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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