{"id":31538,"date":"2019-10-31T21:41:45","date_gmt":"2019-10-31T18:41:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/dragonblood-vyyavleny-pervye-uyazvimosti-wi-fi-wpa3\/"},"modified":"2019-10-31T21:41:45","modified_gmt":"2019-10-31T18:41:45","slug":"dragonblood-vyyavleny-pervye-uyazvimosti-wi-fi-wpa3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/dragonblood-vyyavleny-pervye-uyazvimosti-wi-fi-wpa3","title":{"rendered":"Dragonblood: avastatud Wi-Fi WPA3 esimesed haavatavused","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Oktoobris 2017 selgus, et Wi-Fi Protected Access II (WPA2) protokollis, mis kr\u00fcpteerib Wi-Fi liiklust, on t\u00f5sine haavatavus, mis v\u00f5imaldab tuvastada kasutajate paroole ja seej\u00e4rel j\u00e4lgida ohvri andmevahetust. Haavatavus sai nimeks KRACK (Key Reinstallation Attack'i l\u00fchend) ja see avastati spetsialistide Mathy Vanhoefi ja Eyal Roneni poolt. P\u00e4rast avastamist suleti KRACK-i haavatavus seadmete parandus- ja uuendustarkvaradega, ning mullu tutvustatud WPA3 protokoll pidi igaveseks unustama Wi-Fi turvaprobleemid. <\/p>\n

\"Dragonblood:<\/p>\n

Kahjuks avastasid samad spetsialistid protokollis WPA3 mitte v\u00e4hem ohtlikke haavatavusi. Seega tuleb taas oodata ja loota uusi tarkvarauuendusi traadita ligip\u00e4\u00e4supunktidele ja seadmetele, vastasel juhul peab elama teadmisega Wi-Fi kodu- ja avalike v\u00f5rkude haavatavusest. WPA3-s leitud haavatavused said \u00fcldise nime Dragonblood.<\/p>\n

Probleemi juured, nagu ennegi, peituvad \u00fchenduse loomise mehhanismi ehk standardis nimetatult 'k\u00e4tlemise' t\u00f6\u00f6s. See mehhanism on WPA3 standardis nimetatud Dragonfly (liblikas). Enne Dragonbloodi avastamist peeti seda h\u00e4sti kaitstuks. Dragonbloodi paketti kuulus kokku viis haavatavuse varianti: teenuse keelamine, kaks v\u00f5rgu kaitse v\u00e4hendamise haavatavust (downgrade) ja kaks k\u00fclgkanali r\u00fcnnaku haavatavust (side-channel).<\/p>\n

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\n\"Dragonblood:<\/p>\n

Teenuse keelamine ei p\u00f5hjusta andmete leket, kuid see v\u00f5ib olla ebameeldiv olukord kasutajale, kes korduvalt ei suuda ligip\u00e4\u00e4supunktiga \u00fchendada. \u00dclej\u00e4\u00e4nud haavatavused v\u00f5imaldavad r\u00fcndajal taastada paroolid, et kasutaja saaks ligip\u00e4\u00e4supunktiga \u00fchendada ning j\u00e4lgida igasugust kasutajale kriitilist teavet.<\/p>\n

V\u00f5rgu kaitse v\u00e4hendamise r\u00fcnnakud v\u00f5imaldavad sunniviisilist \u00fcleminekut vanemale WPA2 protokolli versioonile v\u00f5i n\u00f5rgematele WP3 kr\u00fcpteerimisalgoritmide variantidele ning seej\u00e4rel j\u00e4tkata purunemist juba tuntud meetoditega. K\u00fclgkanali r\u00fcnnakud kasutavad WPA3 algoritmide ja nende rakenduste erip\u00e4rasid, mis v\u00f5imaldab samuti kasutada varem tuntud paroolide purustamise meetodeid. Rohkem teavet leiate siit. Dragonbloodi haavatavuste avastamise t\u00f6\u00f6riistade komplekti leiate siit.<\/p>\n

\"Dragonblood:<\/p>\n

Wi-Fi liit, mis vastutab Wi-Fi standardite arendamise eest, on teavitatud tuvastatud haavatavustest. Tehtud on teatavaks, et seadmete tootjad valmistavad ette muudetud tarkvaraversioone, et k\u00f5rvaldada avastatud turvaaugud. Seadmete asendamine ja tagastamine ei ole vajalik.<\/p>\n

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Allikas: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u043e\u0431\u043c\u0435\u043d \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u0436\u0435\u0440\u0442\u0432\u044b. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 KRACK (\u0441\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u043e\u0442 Key Reinstallation Attack) \u0438 \u0431\u044b\u043b\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u0430\u043c\u0438 \u041c\u044d\u0442\u0438 \u0412\u0430\u043d\u0445\u043e\u0444\u043e\u043c (Mathy Vanhoef) \u0438 \u042d\u0439\u0430\u043b\u043e\u043c \u0420\u043e\u043d\u0435\u043d\u043e\u043c (Eyal Ronen). \u041f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f 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