{"id":99452,"date":"2021-03-16T22:22:42","date_gmt":"2021-03-16T20:22:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-tor-s-ustraneniem-uyazvimostej"},"modified":"2021-03-16T22:22:42","modified_gmt":"2021-03-16T20:22:42","slug":"obnovlenie-tor-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/obnovlenie-tor-s-ustraneniem-uyazvimostej","title":{"rendered":"Actualizarea Tor pentru remedierea vulnerabilit\u0103\u021bilor","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Sunt disponibile versiuni corective ale instrumentului Tor (0.3.5.14, 0.4.4.8, 0.4.5.7), utilizat pentru a organiza func\u021bionarea re\u021belei anonime Tor. \u00cen noile versiuni au fost remediate dou\u0103 vulnerabilit\u0103\u021bi care pot fi exploatate pentru a efectua atacuri DoS asupra nodurilor re\u021belei Tor:    <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-28089 \u2014 un atacator poate provoca un atac de tip denial-of-service asupra oric\u0103rui nod \u0219i client Tor prin crearea unei sarcini mari pe CPU, care apare \u00een urma proces\u0103rii anumitor tipuri de date. Aceast\u0103 vulnerabilitate prezint\u0103 cel mai mare risc pentru relays \u0219i <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/server\/\"   title=\"servere\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1571\">servere<\/a> autoritatea directorului (Directory Authority), care sunt punctele de conectare la re\u021bea, r\u0103spunz\u00e2nd de autentificare \u0219i transmiterea c\u0103tre utilizator a listei gateway-urilor care proceseaz\u0103 traficul. Este cel mai simplu s\u0103 se atace serverele de directorie, deoarece acestea permit \u00eenc\u0103rcarea datelor de c\u0103tre orice participant. Atacul asupra circuitelor \u0219i clien\u021bilor poate fi organizat prin \u00eenc\u0103rcarea cache-ului directorilor.\n<li class=\"l\"> CVE-2021-28090 \u2014 un atacator poate provoca o c\u0103dere <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3699\">server<\/a> directorilor prin transmiterea unor semn\u0103turi deta\u0219ate (detached signature) formulate \u00eentr-un anumit mod, utilizate pentru a transmite informa\u021bii despre starea consensului \u00een re\u021bea.    <\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=54768\">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\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 (0.3.5.14, 0.4.4.8, 0.4.5.7), \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\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0433\u0443\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u0435\u043d\u0438\u044f DoS-\u0430\u0442\u0430\u043a \u043d\u0430 \u0443\u0437\u043b\u044b \u0441\u0435\u0442\u0438 Tor: CVE-2021-28089 &#8212; \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u044f \u043b\u044e\u0431\u044b\u0445 \u0443\u0437\u043b\u043e\u0432 \u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432 Tor \u0447\u0435\u0440\u0435\u0437 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043d\u0430 CPU, \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u044e\u0449\u0435\u0439 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u0442\u0438\u043f\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445. [&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-99452","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 (0.3.5.14, 0.4.4.8, 0.4.5.7), \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 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