{"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\/no\/blog\/news\/uyazvimost-v-bluetooth-stekah-linux-macos-android-i-ios","title":{"rendered":"S\u00e5rbarhet i Bluetooth-stakkene for Linux, macOS, Android og iOS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex>      <noindex><\/p>\n<p>Marc Newlin, som avdekket en s\u00e5rbarhet <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=43934\">MouseJack<\/a> for syv \u00e5r siden, avsl\u00f8rte informasjon om <a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2023-45866\">en lignende s\u00e5rbarhet (CVE-2023-45866)<\/a>, som p\u00e5virker Bluetooth-stakker for Android, Linux, macOS og iOS. Denne s\u00e5rbarheten gj\u00f8r det mulig \u00e5 forfalske tastetrykk ved \u00e5 simulere aktivitet fra en inngangsenhet tilkoblet via Bluetooth. N\u00e5r en angriper f\u00e5r tilgang til tastaturet, kan de utf\u00f8re forskjellige handlinger, som \u00e5 kj\u00f8re kommandoer i systemet, installere programmer og omdirigere meldinger.<\/p>\n<p><\/noindex><\/noindex>  <\/p>\n<p>S\u00e5rbarheten skyldes at vertedriverne for HID (Human Interface Device) for Bluetooth-enheter har en modus som lar en ekstern periferiinnretning opprette og etablere krypterte forbindelser uten autentisering. Slike tilkoblede enheter kan sende tastaturmeldinger, og HID-stakken behandler dem, noe som \u00e5pner for muligheten for en angrep ved \u00e5 forfalske HID-meldinger uten brukerens medvirkning. Dette angrepet kan utf\u00f8res p\u00e5 avstand opptil 100 meter fra offeret.<\/p>\n<p>Mekanismen for enhetsparring uten autentisering er definert i Bluetooth-spesifikasjonen, og avhengig av innstillingene i Bluetooth-stakken, lar det tilkoble enheten uten bekreftelse fra brukeren. For eksempel, i Linux, n\u00e5r man bruker Bluetooth-stakken BlueZ, m\u00e5 Bluetooth-adapteren v\u00e6re i oppdagelses- og tilkoblingsmodus for skjult parring. I Android er det nok \u00e5 aktivere Bluetooth-st\u00f8tte. I iOS og macOS m\u00e5 Bluetooth v\u00e6re aktivert og et tr\u00e5dl\u00f8st tastatur m\u00e5 v\u00e6re tilkoblet for at et vellykket angrep skal skje.<\/p>\n<p>Muligheten for \u00e5 forfalske input ble demonstrert i Ubuntu 18.04, 20.04, 22.04 og 23.10 med Bluetooth-stakk basert p\u00e5 BlueZ-pakken. ChromeOS er ikke s\u00e5rbart, da innstillingene for Bluetooth-stakken ikke tillater tilkoblinger uten autentisering. I Android p\u00e5virker s\u00e5rbarheten enheter med plattformversjoner fra 4.2.2 til 14. I macOS ble s\u00e5rbarheten demonstrert p\u00e5 MacBook Pro 2022 med Apple M2-prosessor og macOS 13.3.3, samt p\u00e5 MacBook Air 2017 med Intel-prosessor og macOS 12.6.7. I iOS ble s\u00e5rbarheten demonstrert p\u00e5 iPhone SE med iOS 16.6. Aktivering av Lockdown-modus gir ikke beskyttelse mot angrep p\u00e5 macOS og iOS.<\/p>\n<p> <noindex><\/p>\n<p>I Linux er s\u00e5rbarheten <a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/bluetooth\/bluez.git\/commit\/profiles\/input?id=25a471a83e02e1effb15d5a488b3f0085eaeb675\">was resolved<\/a> I kodebasen til Bluez ved at indstille indstillingen &laquo;ClassicBondedOnly&raquo; til &laquo;true&raquo;, aktiveres sikkerhedstilstand, som kun tillader oprettelse af forbindelser efter parring. Tidligere var v\u00e6rdien indstillet til &laquo;false&raquo;, hvilket reducerede sikkerhedsniveauet for at sikre kompatibilitet med nogle inputenheder.<\/p>\n<p><\/noindex> <noindex><\/p>\n<p>I Bluetooth-stakken Fluoride, som brukes i de nyeste versjonene av Android, <a rel=\"nofollow\" href=\"https:\/\/android.googlesource.com\/platform\/packages\/modules\/Bluetooth\/+\/5673b3c6bbe8c6c9edb8afb5e9499dc3a41d3943\">er s\u00e5rbarheten fikset<\/a> ved \u00e5 gj\u00f8re autentisering obligatorisk for alle krypterte forbindelser. Oppdateringer for Android ble bare utgitt for versjonene 11-14. For Pixel-enheter ble s\u00e5rbarheten fikset i desember-oppdateringen. For Android-versjoner fra 4.2.2 til 10 forblir s\u00e5rbarheten ufikset.<\/p>\n<p><\/noindex><\/p>\n<p>Kilde: <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 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041c\u0430\u0440\u043a 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