{"id":91429,"date":"2020-08-13T13:42:00","date_gmt":"2020-08-13T11:42:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ataka-revolte-pozvolyayushhaya-perehvatit-zashifrovannye-zvonki-v-lte"},"modified":"2020-08-13T13:42:00","modified_gmt":"2020-08-13T11:42:00","slug":"ataka-revolte-pozvolyayushhaya-perehvatit-zashifrovannye-zvonki-v-lte","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/ataka-revolte-pozvolyayushhaya-perehvatit-zashifrovannye-zvonki-v-lte","title":{"rendered":"\u00datok ReVoLTE, ktor\u00fd umo\u017e\u0148uje zachyti\u0165 za\u0161ifrovan\u00e9 hovory v LTE","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Skupina v\u00fdskumn\u00edkov z Ruhrskej univerzity v Bochume (Nemecko) predstavila techniku \u00fatoku ReVoLTE<\/a><\/noindex> (PDF<\/a><\/noindex>), ktor\u00fd umo\u017e\u0148uje zachyti\u0165 za\u0161ifrovan\u00e9 hlasov\u00e9 hovory v mobiln\u00fdch sie\u0165ach 4G\/LTE, ktor\u00e9 pou\u017e\u00edvaj\u00fa na prenos hlasov\u00e9ho trafficu technol\u00f3giu VoLTE (Hlas cez LTE<\/a><\/noindex>).
\n.<\/p>\n

Na ochranu telefonick\u00fdch hovorov pred zachyten\u00edm v VoLTE sa pou\u017e\u00edva \u0161ifrovanie zalo\u017een\u00e9 na streamovom \u0161ifrovan\u00ed<\/a><\/noindex>. \u0160pecifik\u00e1cia predpisuje generova\u0165 pre ka\u017ed\u00fd rel\u00e1ciu unik\u00e1tny \u0161ifrovac\u00ed k\u013e\u00fa\u010d, ale ako zistili v\u00fdskumn\u00edci, 12 z 15 testovan\u00fdch z\u00e1klad\u0148ov\u00fdch stan\u00edc toto ustanovenie nedodr\u017euje a op\u00e4tovne pou\u017e\u00edva rovnak\u00fd k\u013e\u00fa\u010d pre dva po sebe id\u00face hovory na jednom r\u00e1diokan\u00e1li alebo pou\u017e\u00edva predv\u00eddate\u013en\u00e9 met\u00f3dy generovania novej sekvencie.<\/p>\n

Op\u00e4tovn\u00e9 pou\u017e\u00edvanie \u0161ifrovacieho k\u013e\u00fa\u010da umo\u017e\u0148uje \u00fato\u010dn\u00edkovi de\u0161ifrova\u0165 zaznamenan\u00fd za\u0161ifrovan\u00fd traffic s rozhovorom. Na de\u0161ifrovanie obsahu hlasov\u00e9ho hovoru \u00fato\u010dn\u00edk najprv zachyt\u00e1va a uklad\u00e1 za\u0161ifrovan\u00fd r\u00e1diov\u00fd traffic medzi obe\u0165ou a zranite\u013enou z\u00e1klad\u0148ovou stanicou. Po skon\u010den\u00ed hovoru \u00fato\u010dn\u00edk op\u00e4\u0165 vol\u00e1 obeti a sna\u017e\u00ed sa udr\u017ea\u0165 rozhovor \u010do najdlh\u0161ie, aby jej nedal mo\u017enos\u0165 polo\u017ei\u0165 telef\u00f3n. Po\u010das tohto rozhovoru, okrem zaznamen\u00e1vania za\u0161ifrovan\u00e9ho r\u00e1diov\u00e9ho trafficu, sa tie\u017e uklad\u00e1 neza\u0161ifrovan\u00fd p\u00f4vodn\u00fd zvukov\u00fd sign\u00e1l.<\/p>\n

Na de\u0161ifrovanie prv\u00e9ho hovoru obete \u00fato\u010dn\u00edk na z\u00e1klade zachyten\u00e9ho za\u0161ifrovan\u00e9ho trafficu pri druhom hovore a p\u00f4vodn\u00fdch hlasov\u00fdch d\u00e1t, ktor\u00e9 boli zaznamenan\u00e9 na telef\u00f3ne \u00fato\u010dn\u00edka, m\u00f4\u017ee vypo\u010d\u00edta\u0165 hodnotu \u0161ifrovacieho k\u013e\u00fa\u010da, ktor\u00e1 sa ur\u010duje pomocou oper\u00e1cie XOR medzi otvoren\u00fdmi a za\u0161ifrovan\u00fdmi \u00fadajmi. Ke\u010f\u017ee sa \u0161ifrovac\u00ed k\u013e\u00fa\u010d op\u00e4tovne pou\u017e\u00edva, aplikovan\u00edm vypo\u010d\u00edtan\u00e9ho \u0161ifrovacieho k\u013e\u00fa\u010da na za\u0161ifrovan\u00e9 \u00fadaje prv\u00e9ho hovoru m\u00f4\u017ee \u00fato\u010dn\u00edk z\u00edska\u0165 pr\u00edstup k jeho p\u00f4vodn\u00e9mu obsahu. \u010c\u00edm dlh\u0161ie trval druh\u00fd rozhovor \u00fato\u010dn\u00edka s obe\u0165ou, t\u00fdm viac inform\u00e1ci\u00ed z prv\u00e9ho hovoru m\u00f4\u017ee by\u0165 de\u0161ifrovan\u00fdch. Napr\u00edklad, ak sa \u00fato\u010dn\u00edkovi podarilo natiahnu\u0165 rozhovor na 5 min\u00fat, m\u00f4\u017ee taktie\u017e de\u0161ifrova\u0165 5 min\u00fat.<\/p>\n

Na zachytenie za\u0161ifrovan\u00e9ho prenosu v \u00e9teri siet\u00ed LTE v\u00fdskumn\u00edci pou\u017eili analyz\u00e1tor sign\u00e1lu AirScope<\/a><\/noindex>, a na z\u00edskanie p\u00f4vodn\u00e9ho hlasov\u00e9ho pr\u00fadu po\u010das hovoru \u00fato\u010dn\u00edka sa pou\u017e\u00edvali smartf\u00f3ny s Androidom, ovl\u00e1dan\u00e9 cez ADB a SCAT<\/a><\/noindex>. N\u00e1klady na vybavenie potrebn\u00e9 na vykonanie \u00fatoku sa odhaduj\u00fa na 7000 dol\u00e1rov. <\/p>\n


\n
\r\n \"Prehrajte\r\n
<\/div>\r\n <\/div><\/center><\/p>\n

V\u00fdrobcovia z\u00e1klad\u0148ov\u00fdch stan\u00edc boli informovan\u00ed o probl\u00e9me v decembri minul\u00e9ho roka a v\u00e4\u010d\u0161ina u\u017e zverejnila opravy na odstr\u00e1nenie zranite\u013enosti. Napriek tomu niektor\u00ed oper\u00e1tori mohli ignorova\u0165 aktualiz\u00e1cie. Na overenie zranite\u013enosti siet\u00ed LTE a 5G pripraven\u00fdch<\/a><\/noindex> \u0161peci\u00e1lna mobiln\u00e1 aplik\u00e1cia pre platformu Android 9 (na jej pr\u00e1cu je potrebn\u00fd root pr\u00edstup a smartf\u00f3n s \u010dipmi Qualcomm, ako napr\u00edklad Xiaomi Mi A3, One Plus 6T a Xiaomi Mix 3 5G). Okrem ur\u010denia pr\u00edtomnosti zranite\u013enosti sa aplik\u00e1cia d\u00e1 pou\u017ei\u0165 aj na zachytenie prenosu a prezeranie servisn\u00fdch spr\u00e1v. Zachyten\u00fd prenos sa uklad\u00e1 vo form\u00e1te PCAP a m\u00f4\u017ee by\u0165 zaslan\u00fd na ur\u010den\u00fd pou\u017e\u00edvate\u013eom HTTP server na n\u00e1sledn\u00fa anal\u00fdzu \u0161tandardn\u00fdmi n\u00e1strojmi. <\/p>\n

\"\u00datok<\/a><\/noindex><\/center><\/p>\n

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

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

\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438\u0437 \u0420\u0443\u0440\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u0432 \u0411\u043e\u0445\u0443\u043c\u0435 (\u0413\u0435\u0440\u043c\u0430\u043d\u0438\u044f) \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0442\u0435\u0445\u043d\u0438\u043a\u0443 \u0430\u0442\u0430\u043a\u0438 Re­VoL­TE (PDF), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0443\u044e \u043f\u0435\u0440\u0435\u0445\u0432\u0430\u0442\u0438\u0442\u044c \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u0433\u043e\u043b\u043e\u0441\u043e\u0432\u044b\u0435 \u0437\u0432\u043e\u043d\u043a\u0438 \u0432 \u0441\u0435\u0442\u044f\u0445 \u0441\u043e\u0442\u043e\u0432\u043e\u0439 \u0441\u0432\u044f\u0437\u0438 4G\/LTE, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u0434\u043b\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0433\u043e\u043b\u043e\u0441\u043e\u0432\u043e\u0433\u043e \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044e VoLTE (Voice over LTE). . \u0414\u043b\u044f \u0437\u0430\u0449\u0438\u0442\u044b \u0442\u0435\u043b\u0435\u0444\u043e\u043d\u043d\u044b\u0445 \u0437\u0432\u043e\u043d\u043a\u043e\u0432 \u043e\u0442 \u043f\u0435\u0440\u0435\u0445\u0432\u0430\u0442\u0430 \u0432 VoLTE \u0434\u043b\u044f \u043a\u0430\u043d\u0430\u043b\u0430 \u043c\u0435\u0436\u0434\u0443 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u043c \u0438 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043f\u043e\u0442\u043e\u043a\u043e\u0432\u043e\u0433\u043e \u0448\u0438\u0444\u0440\u0430. \u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":91430,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-91429","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\udd47\u00datok ReVoLTE, ktor\u00fd umo\u017e\u0148uje zachyti\u0165 za\u0161ifrovan\u00e9 hovory v LTE | ProHoster","description":"Skupina v\u00fdskumn\u00edkov z R\u00farskou univerzitu v Bochume (Nemecko) predstavila techniku \u00fatoku 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