{"id":101814,"date":"2021-10-27T10:22:38","date_gmt":"2021-10-27T08:22:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/eksperiment-s-opredeleniem-parolej-polzovatelej-70-wi-fi-setej-tel-aviva"},"modified":"2021-10-27T10:22:38","modified_gmt":"2021-10-27T08:22:39","slug":"eksperiment-s-opredeleniem-parolej-polzovatelej-70-wi-fi-setej-tel-aviva","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/eksperiment-s-opredeleniem-parolej-polzovatelej-70-wi-fi-setej-tel-aviva","title":{"rendered":"K\u00eds\u00e9rlet a felhaszn\u00e1l\u00f3i jelszavak meghat\u00e1roz\u00e1s\u00e1ra 70% Wi-Fi h\u00e1l\u00f3zat Tel-Avivban","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Izraeli biztons\u00e1gi kutat\u00f3, Ido Hoorvitch (Tel-Aviv) k\u00f6zz\u00e9tette a vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatokhoz val\u00f3 hozz\u00e1f\u00e9r\u00e9st biztos\u00edt\u00f3 jelszavak megb\u00edzhat\u00f3s\u00e1g\u00e1nak vizsg\u00e1lat\u00e1ra ir\u00e1nyul\u00f3 k\u00eds\u00e9rlet\u00e9nek eredm\u00e9ny\u00e9t. A kutat\u00e1s sor\u00e1n a PMKID azonos\u00edt\u00f3kkal ell\u00e1tott elfogott keretek alapj\u00e1n 5000 vizsg\u00e1lt vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zat k\u00f6z\u00fcl 3663-hoz (73%) siker\u00fclt jelszavakat kital\u00e1lni Tel-Avivban. A v\u00e9gs\u0151 meg\u00e1llap\u00edt\u00e1sok szerint a vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatok t\u00f6bbs\u00e9g\u00e9nek tulajdonosai megb\u00edzhatatlan jelszavakat \u00e1ll\u00edtanak be, amelyek hash alapj\u00e1n kital\u00e1lhat\u00f3k, \u00e9s ezek a h\u00e1l\u00f3zatok t\u00e1mad\u00e1s al\u00e1 vonhat\u00f3k a hashcat, hcxtools \u00e9s hcxdumptool tipikus eszk\u00f6zeivel. <\/p>\n

Ido egy hordozhat\u00f3 sz\u00e1m\u00edt\u00f3g\u00e9pet haszn\u00e1lt Ubuntu Linux oper\u00e1ci\u00f3s rendszert, hogy vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatok csomagjait elfogja, amelyet a h\u00e1tizs\u00e1kj\u00e1ba helyezett, \u00e9s a v\u00e1rosban barangolt, am\u00edg siker\u00fclt elfognia a PMKID azonos\u00edt\u00f3kkal ell\u00e1tott kereteket \u00f6tezer k\u00fcl\u00f6nb\u00f6z\u0151 vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatr\u00f3l. Ezut\u00e1n egy 8 GPU NVIDIA QUADRO RTX 8000 48GB sz\u00e1m\u00edt\u00f3g\u00e9pet haszn\u00e1lt a PMKID azonos\u00edt\u00f3b\u00f3l kiemelt hash-ek jelszavainak kital\u00e1l\u00e1s\u00e1ra. A kital\u00e1l\u00e1s teljes\u00edtm\u00e9nye ezen szerveren<\/a> majdnem 7 milli\u00f3 hash m\u00e1sodpercenk\u00e9nt. \u00d6sszehasonl\u00edt\u00e1sk\u00e9ppen, egy \u00e1tlagos laptop teljes\u00edtm\u00e9nye k\u00f6r\u00fclbel\u00fcl 200 ezer hash m\u00e1sodpercenk\u00e9nt, amely elegend\u0151 egy 10 sz\u00e1mjegyb\u0151l \u00e1ll\u00f3 jelsz\u00f3 kital\u00e1l\u00e1s\u00e1hoz k\u00f6r\u00fclbel\u00fcl 9 perc alatt. <\/p>\n

A kiv\u00e1laszt\u00e1st gyors\u00edt\u00f3 mechanizmus \u00e9rdek\u00e9ben a gener\u00e1l\u00e1s csup\u00e1n kisbet\u0171s 8 karakterb\u0151l, valamint 8, 9 vagy 10 sz\u00e1mjegyb\u0151l \u00e1ll\u00f3 sorozatokra korl\u00e1toz\u00f3dott. Ez a korl\u00e1toz\u00e1s elegend\u0151 volt ahhoz, hogy 3663 jelsz\u00f3t azonos\u00edtsanak az 5000 h\u00e1l\u00f3zatb\u00f3l. A legn\u00e9pszer\u0171bbek a 10 sz\u00e1mjegyb\u0151l \u00e1ll\u00f3 jelszavak voltak, amelyeket 2349 h\u00e1l\u00f3zat haszn\u00e1lt. Az 8 sz\u00e1mjegy\u0171 jelszavakat 596 h\u00e1l\u00f3zatban, a 9 sz\u00e1mjegyet 368-ban, m\u00edg a kisbet\u0171s 8 karakterb\u0151l \u00e1ll\u00f3 jelszavakat 320-ban alkalmazt\u00e1k. A rockyou.txt sz\u00f3t\u00e1r ism\u00e9telt haszn\u00e1lata, amely 133 MB m\u00e9ret\u0171, azonnal 900 jelsz\u00f3 kider\u00edt\u00e9s\u00e9re volt elegend\u0151. <\/p>\n

Felt\u00e9telezhet\u0151, hogy a vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatok jelsz\u00f3megb\u00edzhat\u00f3s\u00e1gi helyzete m\u00e1s v\u00e1rosokban \u00e9s orsz\u00e1gokban hasonl\u00f3, \u00e9s a legt\u00f6bb jelsz\u00f3 n\u00e9h\u00e1ny \u00f3ra alatt kital\u00e1lhat\u00f3, k\u00f6r\u00fclbel\u00fcl 50 doll\u00e1r\u00e9rt, amit egy monitoring \u00fczemm\u00f3dot t\u00e1mogat\u00f3 vezet\u00e9k n\u00e9lk\u00fcli k\u00e1rty\u00e1ra k\u00f6lthet\u00fcnk (a k\u00eds\u00e9rletben az ALFA Network AWUS036ACH k\u00e1rtya haszn\u00e1lt\u00e1k). A PMKID alap\u00fa t\u00e1mad\u00e1s csak azokat a hozz\u00e1f\u00e9r\u00e9si pontokat \u00e9rinti, amelyek t\u00e1mogatj\u00e1k a roamingot, de a gyakorlat azt mutatja, hogy a legt\u00f6bb gy\u00e1rt\u00f3 ezt nem kapcsolja ki. <\/p>\n

A t\u00e1mad\u00e1shoz a WPA2 vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatok felt\u00f6r\u00e9s\u00e9nek standard m\u00f3dszer\u00e9t alkalmazt\u00e1k, amely 2018 \u00f3ta ismert. A klasszikus m\u00f3dszert\u0151l elt\u00e9r\u0151en, amely megk\u00f6veteli a felhaszn\u00e1l\u00f3 csatlakoz\u00e1sa k\u00f6zben a handshake-keretek elfog\u00e1s\u00e1t, a PMKID alap\u00fa m\u00f3dszer nem k\u00f6t\u0151dik egy \u00faj felhaszn\u00e1l\u00f3 h\u00e1l\u00f3zatra val\u00f3 csatlakoz\u00e1s\u00e1hoz, \u00e9s b\u00e1rmikor v\u00e9grehajthat\u00f3. Az ahhoz sz\u00fcks\u00e9ges adatok beszerz\u00e9s\u00e9hez elegend\u0151 egy PMKID azonos\u00edt\u00f3j\u00fa keret elfog\u00e1sa. Az ilyen keretek passz\u00edv m\u00f3dban, a roaming tev\u00e9kenys\u00e9g nyomon k\u00f6vet\u00e9s\u00e9vel, vagy akt\u00edvan is el\u0151id\u00e9zhet\u0151k PMKID keretek \u00e1tad\u00e1s\u00e1nak kezdem\u00e9nyez\u00e9s\u00e9vel, ha hiteles\u00edt\u00e9si k\u00e9relmet k\u00fcld\u00fcnk a hozz\u00e1f\u00e9r\u00e9si pontra. <\/p>\n

A PMKID egy jelsz\u00f3, az AP MAC-c\u00edme, az \u00fcgyf\u00e9l MAC-c\u00edme \u00e9s a vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zat neve (SSID) seg\u00edts\u00e9g\u00e9vel gener\u00e1lt hash. Az utols\u00f3 h\u00e1rom param\u00e9ter (MAC AP, MAC Station \u00e9s SSID) m\u00e1r ismeretes, ami lehet\u0151v\u00e9 teszi a sz\u00f3t\u00e1r alap\u00fa vissza\u00e9l\u00e9si m\u00f3dszer alkalmaz\u00e1s\u00e1t a jelsz\u00f3 meghat\u00e1roz\u00e1s\u00e1ra, hasonl\u00f3an ahhoz, ahogy a felhaszn\u00e1l\u00f3k jelszavainak hash-\u00e9t ismerve azokat a rendszerben felfedezhetj\u00fck. \u00cdgy a vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatra val\u00f3 bel\u00e9p\u00e9s v\u00e9detts\u00e9ge teljes m\u00e9rt\u00e9kben a be\u00e1ll\u00edtott jelsz\u00f3 szil\u00e1rds\u00e1g\u00e1t\u00f3l f\u00fcgg.

\"K\u00eds\u00e9rlet<\/center>
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u0437\u0440\u0430\u0438\u043b\u044c\u0441\u043a\u0438\u0439 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0418\u0434\u043e \u0425\u043e\u0440\u0432\u0438\u0447 (Ido Hoorvitch \u0422\u0435\u043b\u044c-A\u0432\u0438\u0432\u0430) \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430 \u043f\u043e \u0438\u0437\u0443\u0447\u0435\u043d\u0438\u044e \u043d\u0430\u0434\u0451\u0436\u043d\u043e\u0441\u0442\u0438 \u043f\u0430\u0440\u043e\u043b\u0435\u0439, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u043c \u0441\u0435\u0442\u044f\u043c. \u0412 \u0445\u043e\u0434\u0435 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u043e \u043f\u0435\u0440\u0435\u0445\u0432\u0430\u0447\u0435\u043d\u043d\u044b\u043c \u043a\u0430\u0434\u0440\u0430\u043c \u0441 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u0430\u043c\u0438 PMKID \u0443\u0434\u0430\u043b\u043e\u0441\u044c \u043f\u043e\u0434\u043e\u0431\u0440\u0430\u0442\u044c \u043f\u0430\u0440\u043e\u043b\u0438 \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a 3663 \u0438\u0437 5000 (73%) \u0438\u0437\u0443\u0447\u0435\u043d\u043d\u044b\u0445 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0445 \u0441\u0435\u0442\u0435\u0439 \u0432 \u0422\u0435\u043b\u044c-A\u0432\u0438\u0432\u0435. \u0412 \u0438\u0442\u043e\u0433\u0435 \u0431\u044b\u043b \u0441\u0434\u0435\u043b\u0430\u043d \u0432\u044b\u0432\u043e\u0434, \u0447\u0442\u043e \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u0432\u043b\u0430\u0434\u0435\u043b\u044c\u0446\u0435\u0432 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0445 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":101815,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A felhaszn\u00e1l\u00f3k jelszavainak meghat\u00e1roz\u00e1s\u00e1ra ir\u00e1nyul\u00f3 k\u00eds\u00e9rlet 70% Wi-Fi h\u00e1l\u00f3zat T\u00e9l-Aviven | ProHoster","description":"Ido Hoorvitch, egy 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\u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u042d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442 \u0441 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435\u043c \u043f\u0430\u0440\u043e\u043b\u0435\u0439 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 70% Wi-Fi \u0441\u0435\u0442\u0435\u0439 \u0422\u0435\u043b\u044c-A\u0432\u0438\u0432\u0430 | ProHoster","og:description":"\u0418\u0437\u0440\u0430\u0438\u043b\u044c\u0441\u043a\u0438\u0439 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0418\u0434\u043e \u0425\u043e\u0440\u0432\u0438\u0447 (Ido Hoorvitch \u0422\u0435\u043b\u044c-A\u0432\u0438\u0432\u0430) \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b 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