{"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: the first vulnerabilities of Wi-Fi WPA3 have been discovered","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Oktoobris 2017. aastal selgitas ootamatult v\u00e4lja, 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 Attacki l\u00fchend) ning selle avastasid eksperdid Mathy Vanhoef ja Eyal Ronen. P\u00e4rast avastamist suleti KRACK-i haavatavus seadmete uuendatud tarkvaradega ning eelmisel aastal WPA2 asemel kaasnenud protokoll WPA3 pidi \u00fcldse unustama turvaprobleemid Wi-Fi v\u00f5rkudes. <\/p>\n

\"Dragonblood:<\/p>\n

Kahjuks avastasid samad eksperdid ka mitte v\u00e4hem ohtlikke haavatavusi WPA3 protokollis. Seet\u00f5ttu tuleb taas oodata ja loota uuteks tarkvarauuendusteks traadita juurdep\u00e4\u00e4supunktidele ja seadmetele, vastasel juhul tuleb elada teadlikkusega koduste ja avalike Wi-Fi v\u00f5rkude haavatavusest. WPA3-s leitud haavatavused said \u00fcldnimetuse Dragonblood.<\/p>\n

Probleemi juured on endiselt seotud \u00fchenduse loomise mehhanismi t\u00f6\u00f6ga, v\u00f5i nagu need standardis nimetatakse, «k\u00e4tlemine». Selle mehhanismi nimi WPA3 standardis on Dragonfly (liblikas). Enne Dragonblood'i avastamist peeti seda h\u00e4sti kaitstuks. Dragonblood paketti kuulus kokku viis haavatavust: teenuse katkestamine, kaks haavatavust, mis v\u00f5imaldavad n\u00f5rgendada v\u00f5rgu kaitset (downgrade), ja kaks haavatavust k\u00fclgkanali r\u00fcnnakute jaoks (side-channel).<\/p>\n

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

Teenuse katkestamine ei p\u00f5hjusta andmete leket, kuid see v\u00f5ib olla ebameeldiv s\u00fcndmus kasutajale, kes ei saa korduvalt p\u00e4\u00e4seda juurde ligip\u00e4\u00e4supunktile. \u00dclej\u00e4\u00e4nud haavatavused v\u00f5imaldavad r\u00fcndajal taastada kasutaja ligip\u00e4\u00e4suv\u00f5tmed ligip\u00e4\u00e4supunktile ning j\u00e4lgida igasugust kasutaja jaoks kriitilist teavet.<\/p>\n

Verkko-osastojen heikkenemiseen perustuvat hy\u00f6kk\u00e4ykset mahdollistavat pakottamisen siirtym\u00e4\u00e4n vanhempaan WPA2-protokollaversioon tai heikompien WPA3-salausalgoritmien vaihtoehtoihin, ja t\u00e4m\u00e4n j\u00e4lkeen voidaan jatkaa murtautumista jo tunnetuilla menetelmill\u00e4. Sivukanaville perustuva hy\u00f6kk\u00e4ys hy\u00f6dynt\u00e4\u00e4 WPA3-algoritmien erityispiirteit\u00e4 ja niiden toteutusta, mik\u00e4 lopulta my\u00f6s mahdollistaa aiemmin tunnettuja salasanojen murtamistapoja. Lis\u00e4tietoja t\u00e4\u00e4ll\u00e4. Dragonblood-haavoittuvuuksien tunnistusv\u00e4lineet l\u00f6ytyv\u00e4t t\u00e4st\u00e4 linkist\u00e4.<\/p>\n

\"Dragonblood:<\/p>\n

Wi-Fi Allianss, mis vastutab Wi-Fi standardite arendamise eest, on teavitatud leitud haavatavustest. Teavet on saanud, et seadme tootjad valmistavad ette muudetud p\u00fcsivara, et sulgeda 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":"

\u0412 \u043e\u043a\u0442\u044f\u0431\u0440\u0435 2017 \u0433\u043e\u0434\u0430 \u043d\u0435\u043e\u0436\u0438\u0434\u0430\u043d\u043d\u043e \u0432\u044b\u044f\u0441\u043d\u0438\u043b\u043e\u0441\u044c, \u0447\u0442\u043e \u0432 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0435 Wi-Fi Protected Access II (WPA2) \u0434\u043b\u044f \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0442\u0440\u0430\u0444\u0438\u043a\u0430 Wi-Fi \u0438\u043c\u0435\u0435\u0442\u0441\u044f \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0432\u044b\u044f\u0432\u043b\u044f\u0442\u044c \u043f\u0430\u0440\u043e\u043b\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438 \u0437\u0430\u0442\u0435\u043c \u043f\u0440\u043e\u0441\u043b\u0443\u0448\u0438\u0432\u0430\u0442\u044c \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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