{"id":41415,"date":"2020-02-10T20:42:08","date_gmt":"2020-02-10T17:42:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/uyazvimost-v-android-pozvolyayushhaya-udalyonno-vypolnit-kod-pri-vklyuchyonnom-bluetooth"},"modified":"2020-02-10T20:42:08","modified_gmt":"2020-02-10T17:42:08","slug":"uyazvimost-v-android-pozvolyayushhaya-udalyonno-vypolnit-kod-pri-vklyuchyonnom-bluetooth","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/uyazvimost-v-android-pozvolyayushhaya-udalyonno-vypolnit-kod-pri-vklyuchyonnom-bluetooth","title":{"rendered":"Luka w Androidzie, kt\u00f3ra umo\u017cliwia zdalne wykonanie kodu przy w\u0142\u0105czonym Bluetooth","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>W lutym <noindex><a rel=\"nofollow\" href=\"https:\/\/source.android.com\/security\/bulletin\/2020-02-01.html\">aktualizacji<\/a><\/noindex> na platformach Android usuni\u0119to krytyczn\u0105 <noindex><a rel=\"nofollow\" href=\"https:\/\/insinuator.net\/2020\/02\/critical-bluetooth-vulnerability-in-android-cve-2020-0022\/\">luka<\/a><\/noindex> (CVE-2020-0022) w stosie Bluetooth, co umo\u017cliwia zdalne wykonanie kodu przez wys\u0142anie specjalnie sformatowanej paczki Bluetooth. Problem mo\u017ce by\u0107 niezauwa\u017calnie wykorzystywany przez atakuj\u0105cego znajduj\u0105cego si\u0119 w zasi\u0119gu Bluetooth. Nie mo\u017cna wykluczy\u0107 wykorzystania tej luka do tworzenia robak\u00f3w, kt\u00f3re atakuj\u0105 s\u0105siednie urz\u0105dzenia. <\/p>\n<p>Do przeprowadzenia ataku wystarczy zna\u0107 adres MAC urz\u0105dzenia ofiary (nie jest wymagane wcze\u015bniejsze parowanie, ale Bluetooth musi by\u0107 w\u0142\u0105czony na urz\u0105dzeniu). Na niekt\u00f3rych urz\u0105dzeniach adres MAC Bluetooth mo\u017ce by\u0107 obliczony na podstawie adresu MAC Wi-Fi. W przypadku udanego wykorzystania luki atakuj\u0105cy mo\u017ce uruchomi\u0107 sw\u00f3j kod z uprawnieniami procesu dzia\u0142aj\u0105cego w tle, kt\u00f3ry koordynuje dzia\u0142anie Bluetooth w Androidzie.<br \/>\nProblem jest specyficzny dla stosu Bluetooth u\u017cywanego w Androidzie <noindex><a rel=\"nofollow\" href=\"https:\/\/android.googlesource.com\/platform\/system\/bt\/\">Fluoride<\/a><\/noindex> (oparty na kodzie projektu BlueDroid firmy Broadcom) i nie wyst\u0119puje w u\u017cywanym w Linuksie stosie BlueZ.<\/p>\n<p>Badacze, kt\u00f3rzy odkryli problem, byli w stanie przygotowa\u0107 dzia\u0142aj\u0105cy prototyp exploita, ale szczeg\u00f3\u0142y wykorzystania zostan\u0105 <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ernw\">ujawnione<\/a><\/noindex> p\u00f3\u017aniej, po wdro\u017ceniu poprawki do g\u0142\u00f3wnej masy u\u017cytkownik\u00f3w. Wiadomo tylko, \u017ce luka wyst\u0119puje w kodzie ponownego pakowania i <noindex><a rel=\"nofollow\" href=\"https:\/\/android.googlesource.com\/platform\/system\/bt\/+\/3cb7149d8fed2d7d77ceaa95bf845224c4db3baf\">jest spowodowany<\/a><\/noindex> nieprawid\u0142owym obliczaniu rozmiaru pakiet\u00f3w L2CAP (Logical link control and adaptation protocol), w sytuacji gdy przesy\u0142ane przez nadawc\u0119 dane przekraczaj\u0105 oczekiwany rozmiar.<\/p>\n<p>W Androidzie 8 i 9 problem mo\u017ce prowadzi\u0107 do wykonania kodu, ale w Androidzie 10 ogranicza si\u0119 do awarii procesu t\u0142a Bluetooth. Starsze wersje Androida s\u0105 potencjalnie podatne na ten problem, ale mo\u017cliwo\u015b\u0107 wykorzystania luki nie by\u0142a testowana. U\u017cytkownikom zaleca si\u0119 jak najszybsze zainstalowanie aktualizacji oprogramowania, a je\u015bli to niemo\u017cliwe \u2014 domy\u015blnie wy\u0142\u0105czy\u0107 Bluetooth, zablokowa\u0107 wykrywanie urz\u0105dzenia i uruchamia\u0107 Bluetooth w miejscach publicznych tylko w sytuacjach naprawd\u0119 koniecznych (mo\u017cna r\u00f3wnie\u017c zast\u0105pi\u0107 bezprzewodowe s\u0142uchawki przewodowymi).  <\/p>\n<p>Poza wskazanym problemem w <noindex><a rel=\"nofollow\" href=\"https:\/\/source.android.com\/security\/bulletin\/2020-02-01.html\">lutowym<\/a><\/noindex> zestawie poprawek zabezpiecze\u0144 dla Androida usuni\u0119to 26 luk, z kt\u00f3rych jednemu przypisano krytyczny poziom zagro\u017cenia (CVE-2020-0023). Druga luka r\u00f3wnie\u017c <noindex><a rel=\"nofollow\" href=\"https:\/\/android.googlesource.com\/platform\/packages\/apps\/Bluetooth\/+\/0d8307f408f166862fbd6efb593c4d65906a46ae\">rozwi\u0105za\u0144 opartych na otwartym stosie UPnP<\/a><\/noindex> Styk Bluetooth wi\u0105\u017ce si\u0119 z nieprawid\u0142owym przetwarzaniem uprawnienia BLUETOOTH_PRIVILEGED w setPhonebookAccessPermission. W przypadku podatno\u015bci oznaczonych jako krytyczne, rozwi\u0105zano 7 problem\u00f3w w ramach system\u00f3w i aplikacji, 4 w komponentach systemowych, 2 w j\u0105drze i 10 w otwartych oraz w\u0142asno\u015bciowych komponentach chip\u00f3w Qualcomm.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52330\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0444\u0435\u0432\u0440\u0430\u043b\u044c\u0441\u043a\u043e\u043c \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0438 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Android \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-0022) \u0432 Bluetooth-\u0441\u0442\u0435\u043a\u0435, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e Bluetooth-\u043f\u0430\u043a\u0435\u0442\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043d\u0435\u0437\u0430\u043c\u0435\u0442\u043d\u043e \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u043c, \u043d\u0430\u0445\u043e\u0434\u044f\u0449\u0438\u043c\u0441\u044f \u0432 \u043f\u0440\u0435\u0434\u0435\u043b\u0430\u0445 \u0434\u043e\u0441\u044f\u0433\u0430\u0435\u043c\u043e\u0441\u0442\u0438 Bluetooth. \u041d\u0435 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u043e \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0447\u0435\u0440\u0432\u0435\u0439, \u043f\u043e \u0446\u0435\u043f\u043e\u0447\u043a\u0435 \u043f\u043e\u0440\u0430\u0436\u0430\u044e\u0449\u0438\u0445 \u0441\u043e\u0441\u0435\u0434\u043d\u0438\u0435 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430. \u0414\u043b\u044f \u0430\u0442\u0430\u043a\u0438 \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0437\u043d\u0430\u0442\u044c MAC-\u0430\u0434\u0440\u0435\u0441 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0436\u0435\u0440\u0442\u0432\u044b (\u043f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0441\u043e\u043f\u0440\u044f\u0436\u0435\u043d\u0438\u044f \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f, [&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":[],"tags":[],"class_list":["post-41415","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u0444\u0435\u0432\u0440\u0430\u043b\u044c\u0441\u043a\u043e\u043c \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0438 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Android \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 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