{"id":114268,"date":"2024-03-12T12:25:57","date_gmt":"2024-03-12T10:25:57","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-android-14-ekspluatiruemaya-cherez-bluetooth-le"},"modified":"2024-03-12T12:25:57","modified_gmt":"2024-03-12T10:25:57","slug":"uyazvimost-v-android-14-ekspluatiruemaya-cherez-bluetooth-le","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/uyazvimost-v-android-14-ekspluatiruemaya-cherez-bluetooth-le","title":{"rendered":"Ranljivost u Android 14 koja se eksploatira putem Bluetooth LE","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Razvija\u010di projekta GrapheneOS, koji razvija sigurno izvje\u0161\u0107e iz AOSP (Android Open Source Project) osnovne baze, otkrili su ranjivost u Bluetooth stacku Android platforme 14, koja potencijalno mo\u017ee dovesti do daljinskog izvr\u0161avanja koda. Problem je uzrokovan pristupom ve\u0107 oslobo\u0111enom podru\u010dju memorije (use-after-free) u kodu za obradu zvuka koji se prenosi putem Bluetooth LE. <\/p>\n

Ranjivost je otkrivena zahvaljuju\u0107i integraciji dodatne za\u0161tite u pozivu hardened_malloc, koja koristi ARMv8.5 MTE ekstenziju (MemTag, Memory Tagging Extension), omogu\u0107uju\u0107i vezivanje oznaka na svaku operaciju alociranja memorije i organiziranje provjere ispravnosti kori\u0161tenja pokaziva\u010da kako bi se blokirala eksploatacija ranjivosti uzrokovanih pristupom ve\u0107 oslobo\u0111enim blokovima memorije, prelivanjima spremnika, pristupima prije inicijalizacije i kori\u0161tenju izvan trenutnog konteksta. <\/p>\n

Gre\u0161ka se manifestira od a\u017euriranja Android 14 QPR2 (Quarterly Platform Release), objavljenog po\u010detkom o\u017eujka. U glavnoj osnovnoj bazi Android platforme 14, MTE mehanizam je dostupan kao opcija i jo\u0161 se ne primjenjuje zadano, ali su ga u GrapheneOS-u ve\u0107 aktivirali za dodatnu za\u0161titu, \u0161to je omogu\u0107ilo dijagnosticiranje gre\u0161ke nakon a\u017euriranja na Android 14 QPR2. Gre\u0161ka je uzrokovala pad sustava prilikom kori\u0161tenja Bluetooth slu\u0161alica Samsung Galaxy Buds2 Pro s firmverom u kojem je uklju\u010dena MTE bazirana za\u0161tita. Istra\u017eivanje incidenta pokazalo je da je problem bio povezan s pristupom ve\u0107 oslobo\u0111enoj memoriji u Bluetooth LE upravitelju, a ne s padom uzrokovanim integracijom MTE. <\/p>\n

Ranjenost je ispravljena u izdanju GrapheneOS 2024030900 i utje\u010de na gra\u0111evine za pametne telefone koji nemaju uklju\u010denu dodatnu hardversku za\u0161titu temeljenu na pro\u0161irenju MTE (MTE je trenutno uklju\u010den samo za ure\u0111aje Pixel 8 i Pixel 8 Pro). Ranjenost se reproducira na pametnim telefonima Google Pixel 8 sa softverom temeljenim na Androidu 14 QPR2. U Androidu za pametne telefone serije Pixel 8, MTE re\u017eim se mo\u017ee uklju\u010diti u postavkama za programere (\"Postavke \/ Sustav \/ Opcije za programere \/ Pro\u0161irenja ozna\u010davanja memorije\"). Uklju\u010divanje MTE dovodi do pove\u0107anja potro\u0161nje memorije od otprilike 3%, ali ne smanjuje performanse.
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 GrapheneOS, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u043e\u0435 \u043e\u0442\u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435 \u043e\u0442 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u044b AOSP (Android Open Source Project), \u0432\u044b\u044f\u0432\u0438\u043b\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 Bluetooth-\u0441\u0442\u0435\u043a\u0435 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Android 14, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u043c\u0443 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u043a\u043e\u0434\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0435\u043c \u043a \u0443\u0436\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u043e\u0439 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 (use-after-free) \u0432 \u043a\u043e\u0434\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0437\u0432\u0443\u043a\u0430, \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u043e\u0433\u043e \u0447\u0435\u0440\u0435\u0437 Bluetooth LE. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u0438 \u0432 \u0432\u044b\u0437\u043e\u0432 hardened_malloc \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u044b, […]<\/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-114268","post","type-post","status-publish","format-standard","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\udd47Ranljivost u Androidu 14, iskori\u0161tena putem Bluetooth LE | ProHoster","description":"Razvija\u010di projekta GrapheneOS, koji razvija sigurno izvje\u0161\u0107e iz AOSP (Android Open Source Project), otkrili su ranjivost u Bluetooth stacku Android platforme 14, koja potencijalno mo\u017ee 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GrapheneOS, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u043e\u0435 \u043e\u0442\u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435 \u043e\u0442 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u044b AOSP (Android Open Source Project), \u0432\u044b\u044f\u0432\u0438\u043b\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 Bluetooth-\u0441\u0442\u0435\u043a\u0435 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Android 14, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u0435\u0442 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