{"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\/hu\/blog\/news\/ataka-revolte-pozvolyayushhaya-perehvatit-zashifrovannye-zvonki-v-lte","title":{"rendered":"ReVoLTE t\u00e1mad\u00e1s, amely lehet\u0151v\u00e9 teszi az LTE titkos\u00edtott h\u00edv\u00e1sok lehallgat\u00e1s\u00e1t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A kutat\u00f3csoport a Bochumi Egyetemr\u0151l (N\u00e9metorsz\u00e1g) bemutatta a t\u00e1mad\u00e1si technik\u00e1t ReVoLTE<\/a><\/noindex> (PDF<\/a><\/noindex>), amely lehet\u0151v\u00e9 teszi a titkos\u00edtott hangh\u00edv\u00e1sok lehallgat\u00e1s\u00e1t a 4G\/LTE mobilh\u00e1l\u00f3zatokban, amelyek a VoLTE technol\u00f3gi\u00e1t haszn\u00e1lj\u00e1k a hangforgalom tov\u00e1bb\u00edt\u00e1s\u00e1ra (Voice over LTE<\/a><\/noindex>).
\n.<\/p>\n

A VoLTE hangh\u00edv\u00e1sok lehallgat\u00e1sa ellen a kliens \u00e9s a szolg\u00e1ltat\u00f3 k\u00f6z\u00f6tti csatorn\u00e1ban titkos\u00edt\u00e1st alkalmaznak, amely folyamatos titkos\u00edt\u00e1sra \u00e9p\u00fcl<\/a><\/noindex>. A specifik\u00e1ci\u00f3 el\u0151\u00edrja, hogy minden egyes h\u00edv\u00e1s eset\u00e9n egyedi kulcstant kell gener\u00e1lni, de a kutat\u00f3k meg\u00e1llap\u00edtott\u00e1k, hogy a tesztelt 15 b\u00e1zis\u00e1llom\u00e1sb\u00f3l 12 nem teljes\u00edti ezt a felt\u00e9telt, \u00e9s ugyanazt a kulcstant haszn\u00e1lja fel k\u00e9t egym\u00e1st k\u00f6vet\u0151 h\u00edv\u00e1s sor\u00e1n egy r\u00e1di\u00f3csatorn\u00e1ban, vagy kisz\u00e1m\u00edthat\u00f3 m\u00f3dszereket alkalmaz az \u00faj kulcsl\u00e1nc gener\u00e1l\u00e1s\u00e1hoz.<\/p>\n

A kulcstant ism\u00e9telt felhaszn\u00e1l\u00e1sa lehet\u0151v\u00e9 teszi a t\u00e1mad\u00f3 sz\u00e1m\u00e1ra, hogy dek\u00f3dolja a lehallgatott titkos\u00edtott forgalmat a besz\u00e9lget\u00e9sr\u0151l. A h\u00edv\u00e1s tartalm\u00e1nak dek\u00f3dol\u00e1s\u00e1hoz a t\u00e1mad\u00f3nak el\u0151sz\u00f6r lehallgatnia \u00e9s meg kell \u0151riznie a titkos\u00edtott r\u00e1di\u00f3forgalmat az \u00e1ldozat \u00e9s a sebezhet\u0151 b\u00e1zis\u00e1llom\u00e1s k\u00f6z\u00f6tt. A h\u00edv\u00e1s befejez\u00e9se ut\u00e1n a t\u00e1mad\u00f3 visszah\u00edvja az \u00e1ldozatot, \u00e9s megpr\u00f3b\u00e1lja min\u00e9l tov\u00e1bb folytatni a besz\u00e9lget\u00e9st, hogy ne engedje az \u00e1ldozatot letenni a telefont. E besz\u00e9lget\u00e9s sor\u00e1n a titkos\u00edtott r\u00e1di\u00f3forgalom mellett a nem titkos\u00edtott hangjelet is meg\u0151rzik.<\/p>\n

Az \u00e1ldozat els\u0151 h\u00edv\u00e1s\u00e1nak dek\u00f3dol\u00e1s\u00e1hoz a t\u00e1mad\u00f3 a m\u00e1sodik h\u00edv\u00e1s sor\u00e1n lehallgatott titkos\u00edtott adatforgalom \u00e9s a t\u00e1mad\u00f3 telefonj\u00e1n r\u00f6gz\u00edtett eredeti hangadatok alapj\u00e1n kisz\u00e1m\u00edthatja a kulcstant, amelyet az XOR m\u0171velet seg\u00edts\u00e9g\u00e9vel hat\u00e1roznak meg a nyitott \u00e9s titkos\u00edtott adatok k\u00f6z\u00f6tt. Mivel a kulcstant ism\u00e9telten haszn\u00e1lj\u00e1k, a m\u00e1sodik h\u00edv\u00e1sra kisz\u00e1m\u00edtott kulcstant alkalmazva az els\u0151 h\u00edv\u00e1s titkos\u00edtott adataira a t\u00e1mad\u00f3 hozz\u00e1f\u00e9rhet az eredeti tartalomhoz. Min\u00e9l tov\u00e1bb tartott a t\u00e1mad\u00f3 m\u00e1sodik besz\u00e9lget\u00e9se az \u00e1ldozattal, ann\u00e1l t\u00f6bb inform\u00e1ci\u00f3t tud dek\u00f3dolni az els\u0151 h\u00edv\u00e1sb\u00f3l. P\u00e9ld\u00e1ul, ha a t\u00e1mad\u00f3nak siker\u00fclt 5 percig meghosszabb\u00edtania a besz\u00e9lget\u00e9st, akkor 5 percet is dek\u00f3dolhat.<\/p>\n

A titkos\u00edtott forgalom lehallgat\u00e1s\u00e1hoz az LTE-h\u00e1l\u00f3zatokban a kutat\u00f3k jelfeldolgoz\u00f3t alkalmaztak AirScope<\/a><\/noindex>, \u00e9s a t\u00e1mad\u00f3 h\u00edv\u00e1sa k\u00f6zben a hangforr\u00e1s megszerz\u00e9s\u00e9hez Android okostelefonokat haszn\u00e1ltak, amelyeket ADB-n kereszt\u00fcl vezettek. SCAT<\/a><\/noindex>. A t\u00e1mad\u00e1shoz sz\u00fcks\u00e9ges berendez\u00e9sek k\u00f6lts\u00e9ge 7000 doll\u00e1rra tehet\u0151. <\/p>\n


\n
\r\n \"Vide\u00f3\r\n
<\/div>\r\n <\/div><\/center><\/p>\n

A b\u00e1zis\u00e1llom\u00e1s gy\u00e1rt\u00f3it tavaly decemberben \u00e9rtes\u00edtett\u00e9k a probl\u00e9m\u00e1r\u00f3l, \u00e9s a legt\u00f6bb m\u00e1r kiadta a sebezhet\u0151s\u00e9get orvosl\u00f3 jav\u00edt\u00e1sokat. Mindazon\u00e1ltal egyes szolg\u00e1ltat\u00f3k figyelmen k\u00edv\u00fcl hagyhatt\u00e1k a friss\u00edt\u00e9seket. Az LTE- \u00e9s 5G-h\u00e1l\u00f3zatok sebezhet\u0151s\u00e9g\u00e9nek ellen\u0151rz\u00e9s\u00e9hez elk\u00e9sz\u00edtett<\/a><\/noindex> egy speci\u00e1lis mobilalkalmaz\u00e1s sz\u00fcks\u00e9ges az Android 9 platformhoz (root-hozz\u00e1f\u00e9r\u00e9s \u00e9s Qualcomm chipekkel rendelkez\u0151 okostelefon sz\u00fcks\u00e9ges, mint pl. Xiaomi Mi A3, One Plus 6T \u00e9s Xiaomi Mix 3 5G). Az alkalmaz\u00e1s nemcsak a sebezhet\u0151s\u00e9g megl\u00e9t\u00e9t hat\u00e1rozza meg, hanem a forgalom elfog\u00e1s\u00e1ra \u00e9s a szolg\u00e1ltat\u00e1si \u00fczenetek megtekint\u00e9s\u00e9re is haszn\u00e1lhat\u00f3. Az elfogott forgalom PCAP form\u00e1tumban ker\u00fcl ment\u00e9sre \u00e9s a felhaszn\u00e1l\u00f3 \u00e1ltal megadott HTTP szerverre k\u00fcldhet\u0151 tov\u00e1bbi elemz\u00e9s c\u00e9lj\u00e1b\u00f3l. <\/p>\n

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

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

Forr\u00e1s: 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\udd47ReVoLTE t\u00e1mad\u00e1s, amely lehet\u0151v\u00e9 teszi az LTE titkos\u00edtott h\u00edv\u00e1sok elfog\u00e1s\u00e1t | ProHoster","description":"A Bochumi Ruhr Egyetem kutat\u00f3csoportja bemutatta a Re\u00adVoL\u00adTE 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