{"id":106303,"date":"2017-09-07T13:00:35","date_gmt":"2017-09-07T20:00:35","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=106303"},"modified":"2020-04-09T21:55:17","modified_gmt":"2020-04-10T04:55:17","slug":"unit42-threat-brief-patch-today-dont-get-burned-android-toast-overlay-attack","status":"publish","type":"post","link":"https:\/\/origin-unit42.paloaltonetworks.com\/ja\/unit42-threat-brief-patch-today-dont-get-burned-android-toast-overlay-attack\/","title":{"rendered":"\u3059\u3050\u306b\u30d1\u30c3\u30c1\u9069\u7528\u3092\uff01\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\u3092\u5bb9\u6613\u306b\u884c\u3048\u308b\u65b0\u305f\u306aAndroid\u306e\u8106\u5f31\u6027"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>Palo Alto Networks\u306e\u8105\u5a01\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30b9\u30c1\u30fc\u30e0Unit 42\u306f\u3001Google\u306e Android\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u5f71\u97ff\u3059\u308b\u65b0\u3057\u3044\u6df1\u523b\u306a\u8106\u5f31\u6027\u3092\u516c\u958b\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u8106\u5f31\u6027\u306e\u305f\u3081\u306e\u30d1\u30c3\u30c1\u306f\u3001<a href=\"https:\/\/source.android.com\/security\/bulletin\/2017-09-01\" target=\"_blank\" rel=\"noopener noreferrer\" data-page-track=\"true\" data-page-track-value=\"company:unit42-threat-brief-patch-today-dont-get-burned-android-toast-overlay-attack: section: \">2017\u5e749\u6708\u306eAndroid\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u3059\u308b\u516c\u958b\u60c5\u5831<\/a>\uff08\u82f1\u8a9e\uff09\u3067\u5165\u624b\u53ef\u80fd\u3067\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u306f\u3001\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306e<a href=\"https:\/\/www.android.com\/versions\/oreo-8-0\/\" target=\"_blank\" rel=\"noopener noreferrer\" data-page-track=\"true\" data-page-track-value=\"company:unit42-threat-brief-patch-today-dont-get-burned-android-toast-overlay-attack: section: \">Android 8.0 Oreo<\/a>\uff08\u82f1\u8a9e\uff09\u306b\u306f\u5f71\u97ff\u3057\u307e\u305b\u3093\u304c\u3001\u305d\u308c\u3088\u308a\u524d\u306e\u3059\u3079\u3066\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306eAndroid\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u53d6\u308a\u4e0a\u3052\u308b\u3044\u304f\u3064\u304b\u306e\u7d4c\u8def\u3092\u60aa\u7528\u3057\u3066\u3044\u308b\u30de\u30eb\u30a6\u30a7\u30a2\u304c\u5b58\u5728\u3057\u307e\u3059\u304c\u3001\u73fe\u6642\u70b9\u3067Unit 42\u306f\u3001\u3053\u306e\u7279\u5b9a\u306e\u8106\u5f31\u6027\u306b\u5bfe\u3059\u308b\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u653b\u6483\u306f\u8a8d\u8b58\u3057\u3066\u3044\u307e\u305b\u3093\u3002Android 8.0\u306f\u6bd4\u8f03\u7684\u6700\u8fd1\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f\u305f\u3081\u3001\u591a\u304f\u306eAndroid\u30e6\u30fc\u30b6\u30fc\u306f\u3053\u306e\u8106\u5f31\u6027\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306b\u66f4\u65b0\u3092\u9069\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u767a\u898b\u3055\u308c\u305f\u306e\u306f\u3001Android\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u65e2\u77e5\u306e\u653b\u6483\u30bf\u30a4\u30d7\u3067\u3042\u308b\"\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\"\u3092\u3088\u308a\u7c21\u5358\u306b\u884c\u3048\u308b\u8106\u5f31\u6027\u3067\u3059\u3002\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u30e6\u30fc\u30b6\u30fc\u306eAndroid\u30c7\u30d0\u30a4\u30b9\u306b\u60aa\u610f\u306e\u3042\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u5fcd\u3073\u8fbc\u307e\u305b\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u30c7\u30d0\u30a4\u30b9\u5168\u4f53\u306e\u5236\u5fa1\u6a29\u3092\u4e0e\u3048\u308b\u305f\u3081\u306e\u60aa\u610f\u3042\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u3082\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u653b\u6483\u306b\u3088\u308b\u6700\u60aa\u306a\u30b7\u30ca\u30ea\u30aa\u306f\u3001\u3053\u306e\u8106\u5f31\u6027\u3092\u4f7f\u7528\u3057\u3066\u96fb\u8a71\u3092\u4f7f\u7528\u3067\u304d\u306a\u3044\u72b6\u614b\uff08\u64cd\u4f5c\u4e0d\u80fd\uff09\u306b\u3057\u305f\u308a\u3001\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u3084\u60c5\u5831\u7a83\u53d6\u30de\u30eb\u30a6\u30a7\u30a2\u306a\u3069\u306b\u4ee3\u8868\u3055\u308c\u308b\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u308a\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3053\u306e\u8106\u5f31\u6027\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u3092\u5236\u5fa1\u3001\u30ed\u30c3\u30af\u3001\u304a\u3088\u3073\u30c7\u30d0\u30a4\u30b9\u3088\u308a\u60c5\u5831\u3092\u7a83\u53d6\u3059\u308b\u305f\u3081\u306e\u653b\u6483\u306b\u4f7f\u7528\u3055\u308c\u308b\u53ef\u80fd\u6027\u3092\u306f\u3089\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n<p>\"\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\"\u306f\u3001\u653b\u6483\u8005\u304c\u30c7\u30d0\u30a4\u30b9\u3067\u5b9f\u884c\u4e2d\u306e\u4ed6\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u304a\u3088\u3073\u30a2\u30d7\u30ea\u306b\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u4e0a\u66f8\u304d\u3059\u308b\uff08\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u3059\u308b\uff09\u653b\u6483\u3067\u3059\u3002\u653b\u6483\u304c\u6210\u529f\u3059\u308b\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u672c\u6765\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u3044\u308b\u3068\u601d\u308f\u305b\u3001\u5b9f\u969b\u306b\u306f\u5225\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u30af\u30ea\u30c3\u30af\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u56f31\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30d1\u30c3\u30c1\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u305f\u3081\u306b\u30af\u30ea\u30c3\u30af\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u305b\u639b\u3051\u3001\u5b9f\u969b\u306b\u306f\u30c7\u30d0\u30a4\u30b9\u306e\u30d5\u30eb\u7ba1\u7406\u8005\u6a29\u9650\u3092Porn Droid\u30de\u30eb\u30a6\u30a7\u30a2\u306b\u8a31\u53ef\u3055\u305b\u3066\u3044\u308b\u4f8b\u3067\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<div align=\"center\">\n<figure style=\"width: 399px\" class=\"wp-caption aligncenter\"><img  data-src=\"https:\/\/www.paloaltonetworks.jp\/content\/dam\/pan\/ja_JP\/Images\/blog\/2017\/94451\/android-toast-7.png\" alt=\"\u56f31: \u7ba1\u7406\u6a29\u9650\u3092\u8981\u6c42\u3059\u308b\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u3057\u3066\u3044\u308b\u507d\u306e\u30d1\u30c3\u30c1 \u30a4\u30f3\u30b9\u30c8\u30fc\u30e9\u30fc\" width=\"399\" height=\"375\" \/><figcaption class=\"wp-caption-text\">\u56f31: \u7ba1\u7406\u6a29\u9650\u3092\u8981\u6c42\u3059\u308b\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u3057\u3066\u3044\u308b\u507d\u306e\u30d1\u30c3\u30c1 \u30a4\u30f3\u30b9\u30c8\u30fc\u30e9\u30fc<\/figcaption><\/figure>\n<\/div>\n<p>\u3053\u306e\u56f3\u306e\u3088\u3046\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u7121\u610f\u8b58\u306e\u3046\u3061\u306b\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u305b\u3089\u308c\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u306b\u30c7\u30d0\u30a4\u30b9\u306e\u30d5\u30eb\u7ba1\u7406\u6a29\u9650\u3092\u8a31\u53ef\u3059\u308b\u305f\u3081\u306b\u3082\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u4e0a\u306b\u6d88\u3048\u306a\u3044\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u7acb\u3061\u4e0a\u3052\u308b\u3053\u3068\u3067\u3001\u30c7\u30d0\u30a4\u30b9\u3067\u30b5\u30fc\u30d3\u30b9\u62d2\u5426\u72b6\u614b\u3092\u751f\u307f\u51fa\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u660e\u3089\u304b\u306b\u3001\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\u3078\u306e\u30e9\u30f3\u30b5\u30e0\u653b\u6483\u3067\u653b\u6483\u8005\u304c\u4f7f\u7528\u3059\u308b\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\u306f\u3001\u6b21\u306e3\u3064\u3059\u3079\u3066\u3092\u5358\u4e00\u306e\u653b\u6483\u3067\u6210\u3057\u9042\u3052\u308b\u305f\u3081\u306b\u3082\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30c7\u30d0\u30a4\u30b9\u306b\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u305b\u308b<\/li>\n<li>\u30de\u30eb\u30a6\u30a7\u30a2\u306b\u30c7\u30d0\u30a4\u30b9\u306e\u30d5\u30eb\u7ba1\u7406\u6a29\u9650\u3092\u8a31\u53ef\u3055\u305b\u308b<\/li>\n<li>\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30d0\u30a4\u30b9\u3092\u30ed\u30c3\u30af\u3057\u3001\u8eab\u4ee3\u91d1\u306e\u4eba\u8cea\u3068\u3057\u3066\u4fdd\u6301\u3059\u308b<\/li>\n<\/ol>\n<p>\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\u306f\u65b0\u3057\u3044\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u4ee5\u524d\u304b\u3089\u8a71\u984c\u306b\u306f\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u4eca\u307e\u3067\u306e\u3068\u3053\u308d\u3001<a href=\"https:\/\/iisp.gatech.edu\/sites\/default\/files\/documents\/ieee_sp17_cloak_and_dagger_final.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" data-page-track=\"true\" data-page-track-value=\"company:unit42-threat-brief-patch-today-dont-get-burned-android-toast-overlay-attack: section: \">IEEE Security &amp; Privacy\u30da\u30fc\u30d1\u30fc<\/a>\uff08\u82f1\u8a9e\uff09\u306e\u6700\u65b0\u306e\u8abf\u67fb\u306b\u57fa\u3065\u304f\u3068\u3001\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\u3092\u8a66\u307f\u308b\u30a2\u30d7\u30ea\u306b\u306f\u30012\u3064\u306e\u5927\u304d\u306a\u969c\u5bb3\u304c\u3042\u308b\u3068\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<ol>\n<li>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6642\u306b\u3001\u660e\u793a\u7684\u306b\"\u4e0a\u66f8\u304d\"\u6a29\u9650\u3092\u30e6\u30fc\u30b6\u30fc\u306b\u8981\u6c42\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044<\/li>\n<li>Google Play\u304b\u3089\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044<\/li>\n<\/ol>\n<p>\u3053\u308c\u3089\u306f\u5927\u304d\u306a\u653b\u6483\u8efd\u6e1b\u306e\u8981\u56e0\u3067\u3042\u308b\u305f\u3081\u3001\u3053\u308c\u307e\u3067\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\u306f\u6df1\u523b\u306a\u8105\u5a01\u3068\u306f\u307f\u306a\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001Unit 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Play\u4ee5\u5916\u306eWeb\u30b5\u30a4\u30c8\u3084\u30a2\u30d7\u30ea\u30b9\u30c8\u30a2\u304b\u3089\u306e\u60aa\u610f\u3042\u308b\u30a2\u30d7\u30ea\u304c\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u653b\u6483\u3092\u5b9f\u884c\u3067\u304d\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u3066\u3044\u307e\u3059\u3002Google Play\u4ee5\u5916\u306eWeb\u30b5\u30a4\u30c8\u3084\u30a2\u30d7\u30ea\u30b9\u30c8\u30a2\u304b\u3089\u306e\u30a2\u30d7\u30ea\u306f\u3001\u4e16\u754c\u4e2d\u3067Android\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u4f9b\u7d66\u6e90\u3068\u306a\u3063\u3066\u3044\u308b\u306e\u304c\u73fe\u72b6\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8106\u5f31\u6027\u306f\u3001\"<a href=\"https:\/\/developer.android.com\/guide\/topics\/ui\/notifiers\/toasts.html\" target=\"_blank\" rel=\"noopener noreferrer\" data-page-track=\"true\" data-page-track-value=\"company:unit42-threat-brief-patch-today-dont-get-burned-android-toast-overlay-attack: section: 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