{"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\/it\/blog\/news\/eksperiment-s-opredeleniem-parolej-polzovatelej-70-wi-fi-setej-tel-aviva","title":{"rendered":"Esperimento per definire le password degli utenti del 70% delle reti Wi-Fi di Tel Aviv","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Il ricercatore di sicurezza israeliano Ido Hoorvitch (Tel Aviv) ha pubblicato i risultati di un esperimento sulla sicurezza delle password utilizzate per l'accesso alle reti wireless. Durante lo studio sui pacchetti intercettati con identificatori PMKID, \u00e8 stato possibile ottenere le password per accedere a 3663 delle 5000 (73%) reti wireless esaminate a Tel Aviv. In conclusione, si \u00e8 constatato che la maggior parte dei proprietari di reti wireless imposta password deboli, vulnerabili alla scoperta tramite hash, e le loro reti possono essere attaccate utilizzando strumenti standard come hashcat, hcxtools e hcxdumptool.      <\/p>\n<p>Ido ha utilizzato un computer portatile con Ubuntu Linux per intercettare i pacchetti delle reti wireless, inserendolo nello zaino e camminando per la citt\u00e0 finch\u00e9 non \u00e8 riuscito a intercettare pacchetti con identificatori PMKID di cinquemila diverse reti wireless. Dopo di che ha usato un computer con 8 GPU NVIDIA QUADRO RTX 8000 48GB per scoprire le password tramite hash estratti dall'identificatore PMKID. Le prestazioni per la scoperta in questo caso <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/dts-newyork\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2681\">server<\/a> hanno raggiunto quasi 7 milioni di hash al secondo. Per confronto, su un normale laptop, le prestazioni sono di circa 200.000 hash al secondo, sufficienti per scoprire una password di 10 cifre in circa 9 minuti.    <\/p>\n<p>Per accelerare la selezione, \u00e8 stata limitata a sequenze che includevano solo 8 lettere minuscole e 8, 9 o 10 cifre. Questa limitazione \u00e8 stata sufficiente per determinare le password per 3663 delle 5000 reti. Le password pi\u00f9 popolari erano quelle composte da 10 cifre, utilizzate in 2349 reti. Le password di 8 cifre erano usate in 596 reti, quelle di 9 in 368, e le password di 8 lettere minuscole in 320. La ripetizione della selezione utilizzando il dizionario rockyou.txt, della dimensione di 133 MB, ha permesso di individuare subito 900 password.     <\/p>\n<p>Si presume che la situazione della sicurezza delle password nelle reti wireless in altre citt\u00e0 e paesi sia sostanzialmente simile e che la maggior parte delle password possa essere trovata in poche ore, spendendo circa $50 per una scheda wireless con supporto per la modalit\u00e0 monitor (nel esperimento \u00e8 stata utilizzata la scheda ALFA Network AWUS036ACH). L'attacco basato su PMKID \u00e8 applicabile solo ai punti di accesso che supportano il roaming, ma come dimostra la pratica, la maggior parte dei produttori non lo disabilita.      <\/p>\n<p>Per l'attacco \u00e8 stato utilizzato un metodo standard di hacking delle reti wireless con WPA2, noto dal 2018. A differenza del metodo classico, che richiede l'intercettazione dei pacchetti di handshake durante la connessione dell'utente, il metodo basato sull'intercettazione del PMKID non \u00e8 legato alla connessione di un nuovo utente alla rete e pu\u00f2 essere effettuato in qualsiasi momento. Per ottenere i dati sufficienti per iniziare a decifrare la password, \u00e8 necessario solo l'intercettazione di un pacchetto con l'identificatore PMKID. Pacchetti simili possono essere ottenuti sia in modalit\u00e0 passiva, monitorando l'attivit\u00e0 legata al roaming, sia forzando l'invio di pacchetti con PMKID nell'aria, inviando una richiesta di autenticazione al punto di accesso.     <\/p>\n<p>Il PMKID \u00e8 un hash generato utilizzando la password, l'indirizzo MAC del punto di accesso, l'indirizzo MAC del client e il nome della rete wireless (SSID). Gli ultimi tre parametri (MAC AP, MAC Station e SSID) sono noti fin dall'inizio, il che consente di utilizzare il metodo di forza bruta per determinare la password, in modo simile a come le password degli utenti nel sistema possono essere decifrate in caso di fuga del loro hash. Pertanto, la sicurezza dell'accesso alla rete wireless dipende interamente dalla robustezza della password impostata.     <center><img decoding=\"async\" alt=\"Esperimento per definire le password degli utenti del 70% delle reti Wi-Fi di Tel Aviv\" src=\"\/wp-content\/uploads\/2021\/10\/58bf2e205c2868c6fd9103102107cbaa.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center><br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56049\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 [&hellip;]<\/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<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 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