{"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\/ro\/blog\/news\/vypusk-novoj-stabilnoj-vetki-tor-0-4-6","title":{"rendered":"Lansarea unei noi ramuri stabile Tor 0.4.6","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A fost lansat\u0103 versiunea 0.4.6.5 a instrumentelor Tor, utilizate pentru organizarea func\u021bion\u0103rii re\u021belei anonime Tor. Versiunea 0.4.6.5 este considerat\u0103 prima versiune stabil\u0103 a ramurii 0.4.6, care a evoluat \u00een ultimele cinci luni. Ramura 0.4.6 va fi sus\u021binut\u0103 \u00een cadrul ciclului standard de suport \u2014 lansarea actualiz\u0103rilor va fi oprit\u0103 \u00een termen de 9 luni sau la 3 luni dup\u0103 lansarea ramurii 0.4.7.x. Un ciclu de suport pe termen lung (LTS) este asigurat pentru ramura 0.3.5, actualiz\u0103rile pentru care vor fi lansate p\u00e2n\u0103 la 1 februarie 2022. \u00cen acela\u0219i timp, au fost formulate versiunile Tor 0.3.5.15, 0.4.4.9 \u0219i 0.4.5.9 \u00een care au fost remediate vulnerabilit\u0103\u021bile DoS care permit provocarea unei \u00eentreruperi a serviciilor clien\u021bilor onion \u0219i relaye.      <\/p>\n<p>Modific\u0103ri principale:  <\/p>\n<ul>\n<li class=\"l\"> A fost ad\u0103ugat\u0103 posibilitatea de a crea servicii onion pe baza celei de-a treia versiuni a protocolului, cu autentificare a accesului clien\u021bilor prin fi\u0219iere \u00een directorul 'authorized_clients'.\n<li class=\"l\"> Pentru relaye a fost ad\u0103ugat un indicator, permi\u021b\u00e2nd operatorului de nod s\u0103 \u00een\u021beleag\u0103 c\u0103 relaye-ul nu este inclus \u00een consens \u00een procesul de alegere <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/server\/dts-dusseldorf\/\"   title=\"servers\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3444\">servers<\/a> al directory-ului (de exemplu, c\u00e2nd sunt prea multe relaye-uri pe aceea\u0219i adres\u0103 IP).\n<li class=\"l\"> A fost asigurat\u0103 posibilitatea de a transmite informa\u021bii despre supra\u00eenc\u0103rcare \u00een datele extrainfo, care pot fi utilizate pentru echilibrarea \u00eenc\u0103rc\u0103rii \u00een re\u021bea. Transmiterea metricii este controlat\u0103 prin op\u021biunea OverloadStatistics \u00een torrc.\n<li class=\"l\"> \u00cen subsistemul de protec\u021bie \u00eempotriva atacurilor DoS a fost ad\u0103ugat\u0103 posibilitatea de a limita intensitatea conexiunilor clien\u021bilor la relaye.\n<li class=\"l\"> \u00cen relaye-uri a fost implementat\u0103 publicarea statisticilor despre num\u0103rul de servicii onion bazate pe a treia versiune a protocolului \u0219i volumul traficului acestora.\n<li class=\"l\"> Din codul pentru relaye-uri a fost eliminat\u0103 suportul pentru op\u021biunea DirPorts, care nu este utilizat\u0103 pentru acest tip de noduri.\n<li class=\"l\"> A fost realizat\u0103 o refactorizare a codului. Subsistemul de protec\u021bie \u00eempotriva atacurilor DoS a fost mutat \u00een managerul subsys.\n<li class=\"l\"> A fost oprit suportul pentru vechile servicii onion bazate pe a doua versiune a protocolului, care a fost declarat\u0103 \u00eenvechit\u0103 cu un an \u00een urm\u0103. Eliminarea complet\u0103 a codului legat de a doua versiune a protocolului este a\u0219teptat\u0103 \u00een toamn\u0103. A doua versiune a protocolului a fost dezvoltat\u0103 acum aproximativ 16 ani \u0219i din cauza utiliz\u0103rii algoritmilor \u00eenvechi\u021bi \u00een condi\u021biile actuale nu mai poate fi considerat\u0103 sigur\u0103. Acum doi ani \u0219i jum\u0103tate, \u00een versiunea 0.3.2.9, utilizatorilor le-a fost oferit\u0103 a treia versiune a protocolului pentru serviciile onion, remarcabil\u0103 prin trecerea la adrese de 56 de caractere, cu o protec\u021bie mai fiabil\u0103 \u00eempotriva scurgerilor de date prin <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/server\/\"   title=\"servere\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1917\">servere<\/a> un directorat cu o structur\u0103 modular\u0103 extensibil\u0103 \u0219i utilizarea algoritmilor SHA3, ed25519 \u0219i curve25519 \u00een loc de SHA1, DH \u0219i RSA-1024.\n<li class=\"l\"> S-au remediat vulnerabilit\u0103\u021bile:\n<ul>\n<li class=\"l\"> CVE-2021-34550 \u2014 accesarea unei zone de memorie \u00een afara buffer-ului alocat \u00een codul pentru analizarea descriptorilor de servicii onion pe baza celei de-a treia versiuni a protocolului. Un atacator poate, prin plasarea unui descriptor special formulat pentru un serviciu onion, s\u0103 ini\u021bieze pr\u0103bu\u0219irea oric\u0103rui client care \u00eencearc\u0103 s\u0103 acceseze acest serviciu onion.\n<li class=\"l\"> CVE-2021-34549 \u2014 posibilitatea de a efectua un atac pentru a provoca o \u00eentrerupere a serviciului relay-urilor. Un atacator poate crea lan\u021buri cu identificatori care provoac\u0103 coliziuni \u00een func\u021bia hash, procesarea c\u0103rora duce la o \u00eenc\u0103rcare mare a CPU-ului.\n<li class=\"l\"> CVE-2021-34548 \u2014 un relay ar fi putut efectua spoofing pe celulele RELAY_END \u0219i RELAY_RESOLVED \u00een fluxuri par\u021bial \u00eenchise, ceea ce permitea \u00eencheierea unui flux care a fost creat f\u0103r\u0103 participarea acestui relay.\n<li class=\"l\"> TROVE-2021-004 \u2014 au fost ad\u0103ugate verific\u0103ri suplimentare ale erorilor la accesarea generatorului de numere aleatoare OpenSSL (cu implementarea RNG implicit\u0103 \u00een OpenSSL, aceste erori nu se manifest\u0103).                <\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55327\">opennet.ro<\/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 5.0.2.1 - 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