{"id":112103,"date":"2023-12-10T09:10:17","date_gmt":"2023-12-10T07:10:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-bluetooth-stekah-linux-macos-android-i-ios"},"modified":"2023-12-10T09:10:17","modified_gmt":"2023-12-10T07:10:17","slug":"uyazvimost-v-bluetooth-stekah-linux-macos-android-i-ios","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/uyazvimost-v-bluetooth-stekah-linux-macos-android-i-ios","title":{"rendered":"Zranitelnost ve Bluetooth stack\u00e1ch Linuxu, macOS, Androidu a iOS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex>      <noindex><\/p>\n<p>Marc Newlin, kter\u00fd odhalil zranitelnost <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=43934\">MouseJack<\/a> p\u0159ed sedmi lety, zve\u0159ejnil informace o <a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2023-45866\">podobn\u00e9 zranitelnosti (CVE-2023-45866)<\/a>, kter\u00e1 se t\u00fdk\u00e1 Bluetooth stack\u016f Androidu, Linuxu, macOS a iOS. Tato zranitelnost umo\u017e\u0148uje manipulaci s stisky kl\u00e1ves simulov\u00e1n\u00edm aktivity vstupn\u00edho za\u0159\u00edzen\u00ed p\u0159ipojen\u00e9ho p\u0159es Bluetooth. Z\u00edsk\u00e1n\u00edm p\u0159\u00edstupu k vstupu z kl\u00e1vesnice m\u016f\u017ee \u00fato\u010dn\u00edk prov\u00e1d\u011bt r\u016fzn\u00e9 akce, jako je spou\u0161t\u011bn\u00ed p\u0159\u00edkaz\u016f v syst\u00e9mu, instalace aplikac\u00ed a p\u0159esm\u011brov\u00e1n\u00ed zpr\u00e1v.<\/p>\n<p><\/noindex><\/noindex>  <\/p>\n<p>Zranitelnost je zp\u016fsobena t\u00edm, \u017ee ovlada\u010de hostiteli HID (Human Interface Device) pro Bluetooth za\u0159\u00edzen\u00ed maj\u00ed re\u017eim, kter\u00fd umo\u017e\u0148uje vzd\u00e1len\u00e9mu perifern\u00edmu za\u0159\u00edzen\u00ed vytv\u00e1\u0159et a vytv\u00e1\u0159et \u0161ifrovan\u00e9 spojen\u00ed bez autentizace. Takto p\u0159ipojen\u00e1 za\u0159\u00edzen\u00ed mohou p\u0159en\u00e1\u0161et zpr\u00e1vy z kl\u00e1vesnice a stack HID je zpracov\u00e1v\u00e1, co\u017e otev\u00edr\u00e1 mo\u017enost \u00fatoku na podvr\u017een\u00ed HID zpr\u00e1v prov\u00e1d\u011bn\u00e9ho bez \u00fa\u010dasti u\u017eivatele. Tento \u00fatok m\u016f\u017ee b\u00fdt proveden na vzd\u00e1lenost a\u017e 100 metr\u016f od ob\u011bti.<\/p>\n<p>Mechanismus p\u00e1rov\u00e1n\u00ed za\u0159\u00edzen\u00ed bez autentizace je definov\u00e1n ve specifikaci Bluetooth a v z\u00e1vislosti na nastaven\u00ed Bluetooth stacku umo\u017e\u0148uje p\u0159ipojen\u00ed za\u0159\u00edzen\u00ed bez potvrzen\u00ed od u\u017eivatele. Nap\u0159\u00edklad v Linuxu, p\u0159i pou\u017eit\u00ed Bluetooth stacku BlueZ, mus\u00ed b\u00fdt Bluetooth adapt\u00e9r v re\u017eimu objevov\u00e1n\u00ed a p\u0159ipojen\u00ed pro skryt\u00e9 p\u00e1rov\u00e1n\u00ed. V Androidu sta\u010d\u00ed zapnout podporu Bluetooth. V iOS a macOS mus\u00ed b\u00fdt pro \u00fasp\u011b\u0161n\u00fd \u00fatok zapnut Bluetooth a tak\u00e9 mus\u00ed b\u00fdt p\u0159ipojena bezdr\u00e1tov\u00e1 kl\u00e1vesnice.<\/p>\n<p>Mo\u017enost podvr\u017een\u00ed vstupu byla demonstrov\u00e1na v Ubuntu 18.04, 20.04, 22.04 a 23.10 s Bluetooth stackem zalo\u017een\u00fdm na bal\u00ed\u010dku BlueZ. ChromeOS nen\u00ed zraniteln\u00fd, proto\u017ee jeho nastaven\u00ed Bluetooth stacku neumo\u017e\u0148uj\u00ed spojen\u00ed bez autentizace. V Androidu se zranitelnost t\u00fdk\u00e1 za\u0159\u00edzen\u00ed s verzemi platformy od 4.2.2 do 14. Na macOS byla zranitelnost demonstrov\u00e1na na MacBook Pro 2022 s procesorem Apple M2 a macOS 13.3.3, a tak\u00e9 na MacBook Air 2017 s procesorem Intel a macOS 12.6.7. Na iOS byla zranitelnost demonstrov\u00e1na na iPhone SE s iOS 16.6. Aktivace re\u017eimu Lockdown nenab\u00edz\u00ed ochranu p\u0159ed \u00fatokem na macOS a iOS.<\/p>\n<p> <noindex><\/p>\n<p>V Linuxu byla zranitelnost <a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/bluetooth\/bluez.git\/commit\/profiles\/input?id=25a471a83e02e1effb15d5a488b3f0085eaeb675\">odstran\u011bna<\/a> V k\u00f3dov\u00e9 z\u00e1kladn\u011b Bluez nastaven\u00edm volby &laquo;ClassicBondedOnly&raquo; na hodnotu &laquo;true&raquo; se aktivuje bezpe\u010dn\u00fd re\u017eim, kter\u00fd povoluje nav\u00e1z\u00e1n\u00ed spojen\u00ed pouze po sp\u00e1rov\u00e1n\u00ed. D\u0159\u00edve byla nastavena hodnota &laquo;false&raquo;, kter\u00e1, z d\u016fvodu kompatibility s n\u011bkter\u00fdmi vstupn\u00edmi za\u0159\u00edzen\u00edmi, sni\u017eovala \u00farove\u0148 zabezpe\u010den\u00ed.<\/p>\n<p><\/noindex> <noindex><\/p>\n<p>Ve Bluetooth z\u00e1sobn\u00edku Fluoride, kter\u00fd se pou\u017e\u00edv\u00e1 v posledn\u00edch verz\u00edch Androidu, <a rel=\"nofollow\" href=\"https:\/\/android.googlesource.com\/platform\/packages\/modules\/Bluetooth\/+\/5673b3c6bbe8c6c9edb8afb5e9499dc3a41d3943\">byla zranitelnost odstran\u011bna<\/a> povinn\u00fdm uplatn\u011bn\u00edm autentizace pro v\u0161echna \u0161ifrovan\u00e1 spojen\u00ed. Opravy pro Android byly vyd\u00e1ny pouze pro v\u011btve 11-14. Pro za\u0159\u00edzen\u00ed Pixel byla zranitelnost odstran\u011bna v prosincov\u00e9 aktualizaci firmwaru. Pro vyd\u00e1n\u00ed Androidu od 4.2.2 do 10 z\u016fst\u00e1v\u00e1 zranitelnost neopraven\u00e1.<\/p>\n<p><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/security\/17447666\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041c\u0430\u0440\u043a \u041d\u044c\u044e\u043b\u0438\u043d (Marc Newlin), \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u044b\u044f\u0432\u0438\u043b \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c MouseJack \u0441\u0435\u043c\u044c \u043b\u0435\u0442 \u043d\u0430\u0437\u0430\u0434, \u0440\u0430\u0441\u043a\u0440\u044b\u043b \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u043e \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2023-45866), \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u044e\u0449\u0435\u0439 Bluetooth-\u0441\u0442\u0435\u043a\u0438 Android, Linux, macOS \u0438 iOS. \u042d\u0442\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0438\u0442\u044c \u043f\u043e\u0434\u043c\u0435\u043d\u0443 \u043d\u0430\u0436\u0430\u0442\u0438\u0439 \u043a\u043b\u0430\u0432\u0438\u0448 \u043f\u0443\u0442\u0435\u043c \u0441\u0438\u043c\u0443\u043b\u044f\u0446\u0438\u0438 \u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0432\u0432\u043e\u0434\u0430, \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u043f\u043e Bluetooth. \u041f\u043e\u043b\u0443\u0447\u0438\u0432 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u043d\u043e\u043c\u0443 \u0432\u0432\u043e\u0434\u0443, \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a \u043c\u043e\u0436\u0435\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0435 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u043c\u0430\u043d\u0434 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435, [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-112103","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" 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