{"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\/ro\/blog\/news\/uyazvimost-v-android-14-ekspluatiruemaya-cherez-bluetooth-le","title":{"rendered":"Vulnerabilitate \u00een Android 14, exploatat\u0103 prin Bluetooth LE","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dezvoltatorii proiectului GrapheneOS, care dezvolt\u0103 o ramur\u0103 protejat\u0103 a codului surs\u0103 AOSP (Android Open Source Project), au identificat o vulnerabilitate \u00een stiva Bluetooth a platformei Android 14, care poate duce poten\u021bial la executarea de cod de la distan\u021b\u0103. Problema este cauzat\u0103 de accesarea unei zone de memorie deja eliberate (use-after-free) \u00een codul de procesare a sunetului transmis prin Bluetooth LE. <\/p>\n

Vulnerabilitatea a fost identificat\u0103 datorit\u0103 integr\u0103rii unei protec\u021bii suplimentare \u00een apelul hardened_malloc, folosind extensia ARMv8.5 MTE (MemTag, Memory Tagging Extension), care permite asocierea de etichete fiec\u0103rei opera\u021biuni de alocare a memoriei \u0219i organizarea unei verific\u0103ri a corectitudinii utiliz\u0103rii pointerelor pentru a bloca exploatarea vulnerabilit\u0103\u021bilor cauzate de accesarea blocurilor de memorie deja eliberate, dep\u0103\u0219irile de buffer, acces\u0103rile \u00eenainte de ini\u021bializare \u0219i utilizarea \u00een afara contextului curent. <\/p>\n

Eroarea apare \u00eencep\u00e2nd cu actualizarea Android 14 QPR2 (Quarterly Platform Release), publicat\u0103 la \u00eenceputul lunii martie. \u00cen codul de baz\u0103 al platformei Android 14, mecanismul MTE este disponibil ca op\u021biune \u0219i nu este utilizat implicit, dar \u00een GrapheneOS a fost deja activat pentru protec\u021bie suplimentar\u0103, ceea ce a permis diagnosticarea erorii dup\u0103 actualizarea la Android 14 QPR2. Eroarea provoca o \u00eenchidere nea\u0219teptat\u0103 atunci c\u00e2nd se utilizau c\u0103\u0219tile Bluetooth Samsung Galaxy Buds2 Pro cu firmware care include protec\u021bia bazat\u0103 pe MTE. Analiza incidentului a ar\u0103tat c\u0103 problema era legat\u0103 de accesarea memoriei deja eliberate \u00een handler-ul Bluetooth LE, nu de o eroare cauzat\u0103 de integrarea MTE. <\/p>\n

Vulnerabilitatea a fost remediat\u0103 \u00een versiunea GrapheneOS 2024030900 \u0219i afecteaz\u0103 uneltele pentru smartphone-uri care nu au activat\u0103 protec\u021bia suplimentar\u0103 hardware bazat\u0103 pe extensia MTE (MTE este activat deocamdat\u0103 doar pentru dispozitivele Pixel 8 \u0219i Pixel 8 Pro). Vulnerabilitatea se reproduce pe smartphone-urile Google Pixel 8 cu firmware bazat pe Android 14 QPR2. \u00cen Android pentru smartphone-urile din seria Pixel 8, modul MTE poate fi activat \u00een set\u0103rile pentru dezvoltatori (\"Set\u0103ri \/ Sistem \/ Op\u021biuni pentru dezvoltatori \/ Extensii de etichetare a memoriei\"). Activarea MTE duce la o cre\u0219tere a consumului de memorie de aproximativ 3%, dar nu reduce performan\u021ba.
\n
Sursa: opennet.ro<\/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\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\udd47Vulnerabilitate \u00een Android 14, exploatat\u0103 prin Bluetooth LE | ProHoster","description":"Dezvoltatorii proiectului GrapheneOS, care dezvolt\u0103 o ramur\u0103 protejat\u0103 a bazei de cod AOSP (Android Open Source Project), au identificat o vulnerabilitate \u00een stiva Bluetooth a platformei Android 14, care ar putea conduce \u00een mod 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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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