{"id":38794,"date":"2019-10-31T22:25:59","date_gmt":"2019-10-31T19:25:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-tor-otklyucheny-800-iz-6000-uzlov-iz-za-primeneniya-ustarevshego-po\/"},"modified":"2019-10-31T22:25:59","modified_gmt":"2019-10-31T19:25:59","slug":"v-tor-otklyucheny-800-iz-6000-uzlov-iz-za-primeneniya-ustarevshego-po","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/v-tor-otklyucheny-800-iz-6000-uzlov-iz-za-primeneniya-ustarevshego-po","title":{"rendered":"V Tori je vypnut\u00fdch 800 z 6000 uzlov kv\u00f4li pou\u017e\u00edvaniu zastaran\u00e9ho softv\u00e9ru","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1ri anonymnej siete Tor varovali<\/a><\/noindex> o uskuto\u010dnen\u00ed rozsiahlej \u010distenia uzlov, na ktor\u00fdch sa pou\u017e\u00edva zastaran\u00fd softv\u00e9r, ktor\u00e9ho podpora bola ukon\u010den\u00e1. D\u0148a 8. okt\u00f3bra bolo zablokovan\u00fdch pribli\u017ene 800 zastaran\u00fdch uzlov, ktor\u00e9 fungovali v re\u017eime rel\u00e9 (v sieti Tor je celkovo viac ako 6000 tak\u00fdchto uzlov). Zablokovanie bolo vykonan\u00e9 prostredn\u00edctvom umiestnenia na serveroch adres\u00e1rov \u010dierneho zoznamu probl\u00e9mov\u00fdch uzlov. V\u00fdnimka z siete neaktualizovan\u00fdch mostn\u00fdch uzlov (bridge) sa o\u010dak\u00e1va nesk\u00f4r. <\/p>\n

V nasleduj\u00facom stabilnom vydan\u00ed Tor, ktor\u00e9 je napl\u00e1novan\u00e9 na november, sa objav\u00ed mo\u017enos\u0165, ktor\u00e1 predvolene odmieta pripojenia s uzlami
\nna ktor\u00fdch s\u00fa pou\u017eit\u00e9 vydania Tor, ktor\u00fdch podpora vypr\u0161ala. Tak\u00e1to zmena umo\u017en\u00ed v bud\u00facnosti, s postupn\u00fdm ukon\u010dovan\u00edm podpory pre jednotliv\u00e9 verzie, automaticky vyl\u00fa\u010di\u0165 z siete uzly, ktor\u00e9 sa v\u010das neprepli na aktu\u00e1lny softv\u00e9r. Napr\u00edklad v s\u00fa\u010dasnosti sa v sieti Tor st\u00e1le nach\u00e1dzaj\u00fa uzly s Tor 0.2.4.x, ktor\u00fd bol vydan\u00fd v roku 2013, aj ke\u010f podpora pre st\u00e1le prebieha<\/a><\/noindex> LTS-vetvy 0.2.9.<\/p>\n

Prev\u00e1dzkovatelia zastaran\u00fdch syst\u00e9mov boli informovan\u00ed o pl\u00e1novanej blok\u00e1cii v septembri<\/a><\/noindex> cez mailingov\u00e9 zoznamy a odoslan\u00edm individu\u00e1lnych upozornen\u00ed na kontaktn\u00e9 adresy uveden\u00e9 v poli ContactInfo. Po upozornen\u00ed klesol po\u010det neaktualizovan\u00fdch uzlov z 1276 na pribli\u017ene 800. Pod\u013ea predpokladov v s\u00fa\u010dasnosti cez zastaran\u00e9 uzly prebieha pribli\u017ene 12 % prev\u00e1dzky, pri\u010dom v\u00e4\u010d\u0161ina z nej je spojen\u00e1 s tranzitn\u00fdm prenosom \u2014 podiel prev\u00e1dzky neaktualizovan\u00fdch v\u00fdstupn\u00fdch uzlov predstavuje iba 1,68 % (62 uzlov). O\u010dak\u00e1va sa, \u017ee vyradenie neaktualizovan\u00fdch uzlov z siete len mierne ovplyvn\u00ed ve\u013ekos\u0165 siete a sp\u00f4sob\u00ed mal\u00e9 oslabenie ukazovate\u013eov na grafik\u00e1ch<\/a><\/noindex>, odr\u00e1\u017eaj\u00facich stav anonymnej siete. <\/p>\n

Pr\u00edtomnos\u0165 uzlov v sieti so zastaran\u00fdm softv\u00e9rom negat\u00edvne ovplyv\u0148uje stabilitu a vytv\u00e1ra dodato\u010dn\u00e9 rizik\u00e1 bezpe\u010dnostn\u00fdch poru\u0161en\u00ed. Ak spr\u00e1vca nesleduje aktualiz\u00e1ciu Tor, je pravdepodobn\u00e9, \u017ee nedbalo pristupuje k aktualiz\u00e1cii syst\u00e9mu a in\u00fdch serverov\u00fdch aplik\u00e1ci\u00ed, \u010do zvy\u0161uje riziko prevzatia kontroly nad uzlom v d\u00f4sledku cielen\u00fdch \u00fatokov. <\/p>\n

Okrem toho pr\u00edtomnos\u0165 uzlov s u\u017e nepodporovan\u00fdmi verziami br\u00e1ni oprav\u00e1m d\u00f4le\u017eit\u00fdch ch\u00fdb, zabra\u0148uje zav\u00e1dzaniu nov\u00fdch funkci\u00ed protokolu a zni\u017euje efektivitu fungovania siete. Napr\u00edklad uzly, ktor\u00e9 nie s\u00fa v z\u00f3ne, v ktor\u00fdch sa prejavuje chyba<\/a><\/noindex> v spracovate\u013eovi HSv3, ved\u00fa k zv\u00fd\u0161eniu oneskorenia pri prechode pou\u017e\u00edvate\u013esk\u00fdch d\u00e1t cez ne a zvy\u0161uj\u00fa celkov\u00fa z\u00e1\u0165a\u017e siete v d\u00f4sledku opakovan\u00fdch po\u017eiadaviek klientov po zlyhaniach spracovania pripojen\u00ed HSv3.<\/p>\n

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

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

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