{"id":120369,"date":"2021-08-31T06:00:19","date_gmt":"2021-08-31T13:00:19","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=120369"},"modified":"2021-08-31T03:20:33","modified_gmt":"2021-08-31T10:20:33","slug":"dns-rebinding","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/dns-rebinding\/","title":{"rendered":"DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483: 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href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>\u306e\u304a\u5ba2\u69d8\u3067\u3001<a href=\"https:\/\/docs.paloaltonetworks.com\/dns-security.html\">DNS \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/a>\u3001<a href=\"https:\/\/docs.paloaltonetworks.com\/pan-os\/9-1\/pan-os-admin\/url-filtering\">URL \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/secure-the-network\/subscriptions\/threat-prevention\">\u8105\u5a01\u9632\u5fa1<\/a>\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3092\u304a\u6301\u3061\u306e\u65b9\u306f\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u4efb\u610f\u306e\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u8a31\u53ef\u304c\u975e\u5e38\u306b\u5371\u967a\u306a\u3053\u3068\u306f\u308f\u304b\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u6700\u65b0\u30d6\u30e9\u30a6\u30b6\u306e\u307b\u3068\u3093\u3069\u306f\u3053\u3046\u3057\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002\u3067\u3059\u304cDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u3088\u308a\u3053\u306e\u5236\u9650\u3092\u56de\u907f\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u30dd\u30ea\u30b7\u30fc\u306e\u91cd\u8981\u6027\u3068\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u30c6\u30af\u30cb\u30c3\u30af\u306e\u4ed5\u7d44\u307f\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u30dd\u30ea\u30b7\u30fc<\/h3>\n<p>\u901a\u5e38\u3001Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304cWeb\u30da\u30fc\u30b8\u3092\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\u3001JavaScript\u3084\u753b\u50cf\u3001CSS\u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u30ea\u30bd\u30fc\u30b9\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002\u3042\u308bWeb\u30da\u30fc\u30b8\u306f\u3001\u3053\u308c\u3089\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u81ea\u8eab\u3068\u540c\u4e00\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u53d6\u5f97\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3057\u3001\u7570\u306a\u308b\u30aa\u30ea\u30b8\u30f3\u304b\u3089\u3082\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u3067\u30ea\u30bd\u30fc\u30b9\u3092\u8981\u6c42\u3067\u304d\u308c\u3070\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u306a\u3069\u306e\u5171\u6709\u30ea\u30bd\u30fc\u30b9\u304b\u3089\u306e\u6069\u6075\u3092\u53d7\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3068\u3053\u308d\u304c\u3001\u3042\u308bWeb\u30b5\u30a4\u30c8\u304b\u3089\u4efb\u610f\u306e\u30aa\u30ea\u30b8\u30f3\u306e\u30ea\u30bd\u30fc\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u6df1\u523b\u306a\u4e8b\u614b\u3092\u62db\u304d\u307e\u3059\u3002\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u3092\u884c\u308f\u306a\u3051\u308c\u3070\u3001\u60aa\u610f\u306e\u3042\u308bWeb\u30da\u30fc\u30b8\u304c\u6b63\u5f53\u306a\u30e6\u30fc\u30b6\u30fc\u306b\u4e0e\u3048\u3089\u308c\u305f\u4fe1\u983c\u3092\u60aa\u7528\u3057\u3001\u305d\u306e\u4eba\u306b\u306a\u308a\u304b\u308f\u3063\u3066\u91cd\u8981\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u4e0d\u6b63\u306a\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u306e\u60aa\u7528\u306f\u300c<a href=\"https:\/\/owasp.org\/www-community\/attacks\/csrf#:~:text=Cross%2DSite%20Request%20Forgery%20(CSRF,which%20they're%20currently%20authenticated.&amp;text=If%20the%20victim%20is%20an,compromise%20the%20entire%20web%20application.\">\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d5\u30a9\u30fc\u30b8\u30a7\u30ea<\/a>\uff08CSRF\uff09\u300d\u3068\u3044\u3046\u540d\u524d\u3067\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6700\u8fd1\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u3042\u308c\u3070\u3001\u3053\u306eCSRF\u304b\u3089\u306e\u8105\u5a01\u3092\u7de9\u548c\u3059\u308b\u305f\u3081\u306b\u300c\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u30dd\u30ea\u30b7\u30fc\u300d\u3092\u3068\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30dd\u30ea\u30b7\u30fc\u306f\u30b9\u30af\u30ea\u30d7\u30c8\u306b\u300c\u30aa\u30ea\u30b8\u30f3\u306e\u7570\u306a\u308bWeb\u30ea\u30bd\u30fc\u30b9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u3092\u7981\u6b62\u300d\u3059\u308b\u3082\u306e\u3067\u3001Web\u30da\u30fc\u30b8\u306fHTML\u30bf\u30b0\u5185\u306b\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u8aad\u307f\u8fbc\u3080\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\uff08\u305f\u3068\u3048\u3070\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u5e83\u544a\u3092\u8868\u793a\u3059\u308biframe\u3092\u57cb\u3081\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u308b\uff09\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u304c\u30b9\u30af\u30ea\u30d7\u30c8\u306b\u3088\u308b\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0<\/h3>\n<p>\u300c\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u30dd\u30ea\u30b7\u30fc\u300d\u3067\u7570\u306a\u308b\u30aa\u30ea\u30b8\u30f3\u3092\u8b58\u5225\u3059\u308b\u306b\u306f\u3001URI\u30b9\u30ad\u30fc\u30e0\u3001\u30db\u30b9\u30c8\u540d\u3001\u30dd\u30fc\u30c8\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u5229\u7528\u3057\u307e\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u306f\u3053\u308c\u3089\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u306a\u304b\u304b\u3089\u30db\u30b9\u30c8\u540d\u3092\u4f7f\u3063\u3066\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u7570\u306a\u308b\u30b5\u30fc\u30d0\u30fc\u3092\u8b58\u5225\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3001\u3053\u306e\u30db\u30b9\u30c8\u540d\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u306b\u76f4\u63a5\u30d0\u30a4\u30f3\u30c9\u3055\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u304fDNS\u306b\u3088\u3063\u3066IP\u30a2\u30c9\u30ec\u30b9\u306b\u89e3\u6c7a\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u3067\u3059\u3057\u3001IP\u30a2\u30c9\u30ec\u30b9\u3082\u9759\u7684\u306a\u3044\u3057\u52d5\u7684\u306b\u3053\u308c\u3089\u306e\u6a5f\u5668\u306b\u30d0\u30a4\u30f3\u30c9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u3067\u3042\u308c\u3070DNS\u30ec\u30b3\u30fc\u30c9\u3092\u81ea\u5206\u306e\u597d\u304d\u306a\u3088\u3046\u306b\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u304b\u3089\u3001\u30db\u30b9\u30c8\u540d\u3092\u4efb\u610f\u306eIP\u30a2\u30c9\u30ec\u30b9\u306b\u89e3\u6c7a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u300cDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u300d\u306f\u3053\u3046\u3057\u305f\u7279\u6a29\u3092\u60aa\u7528\u3059\u308b\u653b\u6483\u3067\u3001\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u653b\u6483\u8005\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u653b\u6483\u7528\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u8aad\u307f\u8fbc\u3093\u3060\u3089\u3001\u30db\u30b9\u30c8\u540d\u3092\u6a19\u7684\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u6307\u3059\u5185\u90e8IP\u30a2\u30c9\u30ec\u30b9\u306b\u30d0\u30a4\u30f3\u30c9\u3057\u306a\u304a\u3057\uff08=\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\uff09\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u653b\u6483\u8005\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u30dd\u30ea\u30b7\u30fc\u306b\u9055\u53cd\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u60aa\u610f\u306e\u3042\u308b\u30db\u30b9\u30c8\u540d\u3092\u4f7f\u3063\u3066\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30ea\u30bd\u30fc\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><figure id=\"attachment_120342\" aria-describedby=\"caption-attachment-120342\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-120343 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/08\/word-image-62.png\" alt=\"\u3053\u306e\u56f3\u306f\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u306e\u4ed5\u7d44\u307f\u3092\u4eee\u60f3\u7684\u306a\u4f8b\u3067\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u88ab\u5bb3\u8005\u306e\u30a2\u30ec\u30c3\u30af\u30b9\u304c\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306bIP\u30a2\u30c9\u30ec\u30b9192[.]0.0.1\u3067\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8Web\u30b5\u30fc\u30d3\u30b9\u3092\u7acb\u3066\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u306f\u6a5f\u5bc6\u30c7\u30fc\u30bf\u304c\u5165\u3063\u3066\u3044\u3066\u3001Alex\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304b\u3089\u3057\u304b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u3053\u3068\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u653b\u6483\u5074\u306e\u30dc\u30d6\u306fDNS\u30ea\u30be\u30eb\u30d0\uff081[.]2.3.4\uff09\u3068\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u3092\u30db\u30b9\u30c8\u3059\u308bWeb\u30b5\u30fc\u30d0\u30fc\uff085[.]6.7.8\uff09\u3068\u3044\u30462\u3064\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3057\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u30dc\u30d6\u306fattack[.]com\u3068\u3044\u3046\u30c9\u30e1\u30a4\u30f3\u3092\u767b\u9332\u3057\u3001\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\uff08NS\uff09\u306e\u305d\u306e\u30ec\u30b3\u30fc\u30c9\u30921[.]2.3.4\u306b\u5411\u3051\u3066\u3044\u307e\u3059\u3002\" width=\"900\" height=\"506\" \/><figcaption id=\"caption-attachment-120342\" class=\"wp-caption-text\">\u56f31 DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\u4ed5\u7d44\u307f<\/figcaption><\/figure>\u56f31\u306f\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u306e\u4ed5\u7d44\u307f\u3092\u4eee\u60f3\u7684\u306a\u4f8b\u3067\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u88ab\u5bb3\u8005\u306eAlex\u304c\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306bIP\u30a2\u30c9\u30ec\u30b9192[.]0.0.1\u3067\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8Web\u30b5\u30fc\u30d3\u30b9\u3092\u7acb\u3066\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u306f\u6a5f\u5bc6\u30c7\u30fc\u30bf\u304c\u5165\u3063\u3066\u3044\u3066\u3001Alex\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304b\u3089\u3057\u304b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u3053\u3068\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u653b\u6483\u5074\u306eBob\u306fDNS\u30ea\u30be\u30eb\u30d0\uff081[.]2.3.4\uff09\u3068\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u3092\u30db\u30b9\u30c8\u3059\u308bWeb\u30b5\u30fc\u30d0\u30fc\uff085[.]6.7.8\uff09\u3068\u3044\u30462\u3064\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3057\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306bBob\u306fattack[.]com\u3068\u3044\u3046\u30c9\u30e1\u30a4\u30f3\u3092\u767b\u9332\u3057\u3001\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\uff08NS\uff09\u306e\u305d\u306e\u30ec\u30b3\u30fc\u30c9\u30921[.]2.3.4\u306b\u5411\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Alex\u304c\u30d6\u30e9\u30a6\u30b6\u3067<span style=\"font-family: 'courier new', courier, monospace;\">attack[.]com<\/span>\u3092\u958b\u304f\u3068\u3001Bob\u306e\u30ea\u30be\u30eb\u30d0\u306bDNS\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u9001\u4fe1\u3055\u308c\u3001\u60aa\u610f\u306e\u3042\u308b\u30b5\u30fc\u30d0\u30fc\u306e\u30a2\u30c9\u30ec\u30b9\u3067\u3042\u308b<span style=\"font-family: 'courier new', courier, monospace;\">5[.]6.7.8<\/span>\u304c\u53d6\u5f97\u3055\u308c\u3066\u304d\u307e\u3059\u3002\u305d\u3046\u3057\u3066Alex\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u8aad\u307f\u8fbc\u307e\u308c\u308b\u3068\u3001Bob\u306eWeb\u30b5\u30a4\u30c8\u306e\u60aa\u610f\u306e\u3042\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u81ea\u8eab\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3066\u518d\u5ea6DNS\u540d\u524d\u89e3\u6c7a\u3092\u884c\u304a\u3046\u3068\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u4eca\u56de\u30ea\u30be\u30eb\u30d0\u306f<span style=\"font-family: 'courier new', courier, monospace;\">192[.]0.0.1<\/span>\u3092\u8fd4\u3057\u3066\u304d\u307e\u3059\u3002\u3064\u307e\u308a\u3001<span style=\"font-family: 'courier new', courier, monospace;\">attack[.]com<\/span>\u306f\u6a19\u7684\u306e\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u306b\u300c\u30ea\u30d0\u30a4\u30f3\u30c9\u300d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u60aa\u610f\u306e\u3042\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u304c<span style=\"font-family: 'courier new', courier, monospace;\">attack[.]com<\/span>\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u308a\u7d9a\u3051\u3001\u6700\u7d42\u7684\u306b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u306b\u5230\u9054\u3057\u307e\u3059\u3002Alex\u306e\u30d6\u30e9\u30a6\u30b6\u306f\u3053\u308c\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u3068\u306f\u8a8d\u8b58\u3057\u306a\u3044\u306e\u3067\u3001\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u304c\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u958b\u304b\u308c\u3066\u3044\u308b\u9593\u306f\u3001\u8fd4\u3055\u308c\u305f\u79d8\u5bc6\u3092\u8aad\u307f\u53d6\u308a\u3001\u7a83\u53d6\u3057\u305f\u30c7\u30fc\u30bf\u3092\u6d41\u51fa\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u5b9f\u4e16\u754c\u306e\u653b\u6483\u306b\u304a\u3051\u308bDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0<\/h2>\n<p>DNS\u306e\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u653b\u6483\u8005\u306f\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u3092\u30d7\u30ed\u30ad\u30b7\u3068\u3057\u3066\u60aa\u7528\u3057\u3001\u653b\u6483\u5bfe\u8c61\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u3068\u62e1\u5927\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u4f01\u696d\u3084\u5bb6\u5ead\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u7acb\u3061\u4e0a\u3052\u3089\u308c\u3066\u3044\u308bWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u5897\u3048\u308b\u306b\u3064\u308c\u3001\u653b\u6483\u8005\u306b\u3055\u3089\u3055\u308c\u308b\u6f5c\u5728\u7684\u8106\u5f31\u6027\u3082\u8457\u3057\u304f\u5897\u52a0\u3057\u307e\u3059\u3002\u304f\u308f\u3048\u3066\u3001\u793e\u5185\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u4fe1\u983c\u304c\u9ad8\u304f\u8a2d\u5b9a\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u4fb5\u5165\u30c6\u30af\u30cb\u30c3\u30af\u3068\u8106\u5f31\u6027\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u5b9f\u4e16\u754c\u306e\u653b\u6483\u3067\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306f\u975e\u5e38\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3046\u308b\u306e\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e<a href=\"https:\/\/github.com\/nccgroup\/singularity\">Singularity<\/a>\u3092\u4f7f\u3063\u3066\u3001\u5b9f\u969b\u306e\u4fb5\u5165\u306b\u304a\u3044\u3066\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u304c\u3069\u306e\u3088\u3046\u306b\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u306e\u304b\u3092\u793a\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3>DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u3088\u308b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u4fb5\u5165<\/h3>\n<p>DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u306e\u6700\u521d\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u4ed6\u306eWeb\u30d9\u30fc\u30b9\u306e\u653b\u6483\u3068\u540c\u3058\u3067\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u3084<a href=\"https:\/\/unit42.paloaltonetworks.jp\/cybersquatting\/\">\u30b5\u30a4\u30d0\u30fc\u30b9\u30af\u30ef\u30c3\u30c6\u30a3\u30f3\u30b0<\/a>\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u30bd\u30fc\u30b7\u30e3\u30eb\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u624b\u6cd5\u3067\u88ab\u5bb3\u8005\u3092\u9a19\u3057\u3001\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u3092\u958b\u304b\u305b\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_120344\" aria-describedby=\"caption-attachment-120344\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-120345 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/08\/word-image-63.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306f\u3001\u79c1\u305f\u3061\u306e\u691c\u8a3c\u74b0\u5883\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u305f\u3068\u304d\u306eSingularity\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002Singularity\u306f\u3082\u306e\u306e\u6570\u79d2\u3067\u5185\u90e8\u30b5\u30fc\u30d3\u30b9\u3092\u8a8d\u8b58\u3057\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u4f7f\u3048\u308b\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u9732\u51fa\u3055\u305b\u307e\u3059\u3002 \" width=\"900\" height=\"285\" \/><figcaption id=\"caption-attachment-120344\" class=\"wp-caption-text\">\u56f32 Singularity\u306b\u3088\u308b\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30b9\u30ad\u30e3\u30f3\u7d50\u679c<\/figcaption><\/figure>\n<p>\u653b\u6483\u8005\u306f\u3001\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u3092\u958b\u3044\u305f\u3089\u3001\u307e\u305a\u306f\u8106\u5f31\u306a\u30b5\u30fc\u30d3\u30b9\u3092\u30db\u30b9\u30c8\u3057\u3066\u3044\u308b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u30a2\u30c9\u30ec\u30b9\u3068\u30dd\u30fc\u30c8\u3092\u7279\u5b9a\u3057\u3001\u305d\u306e\u5f8c\u3067DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u653b\u6483\u5074\u306eWeb\u30b5\u30a4\u30c8\u306f\u3001<a href=\"https:\/\/ja.wikipedia.org\/wiki\/WebRTC\">WebRTC<\/a>\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u3063\u3066\u30ed\u30fc\u30ab\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u30aa\u30fc\u30d7\u30f3\u306b\u306a\u3063\u3066\u3044\u308bWeb\u30b5\u30fc\u30d3\u30b9\u3092\u30b9\u30ad\u30e3\u30f3\u3067\u304d\u307e\u3059\u3002Singularity\u3067\u306f\u3001\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u76f4\u63a5\u9001\u4fe1\u3057\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3059\u308b\u307e\u3067\u306e\u6642\u9593\u3092\u8a08\u6e2c\u3059\u308b\u3068\u3044\u3046\u3001\u3088\u308a\u308f\u304b\u308a\u3084\u3059\u3044\u6226\u7565\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u8981\u6c42\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u4f8b\u5916\u767a\u751f\u307e\u3067\u306e\u6642\u9593\u306f\u77ed\u304f\u306a\u308a\u307e\u3059\u3002\u56f32\u306f\u3001\u79c1\u305f\u3061\u306e\u691c\u8a3c\u74b0\u5883\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u305f\u3068\u304d\u306eSingularity\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002Singularity\u306f<span style=\"font-family: 'courier new', courier, monospace;\">10[.]0.0.6:80<\/span>\u3068<span style=\"font-family: 'courier new', courier, monospace;\">10[.]0.0.6:8080<\/span>\u306b\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u5185\u90e8\u30b5\u30fc\u30d3\u30b9\u3092\u3082\u306e\u306e\u6570\u79d2\u3067\u6d17\u3044\u51fa\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b9\u30c6\u30c3\u30d7\u306fDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u4f7f\u3048\u308b\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u9732\u51fa\u3055\u305b\u308b\u3082\u306e\u3067\u3059\u3002\u653b\u6483\u8005\u306f\u958b\u3044\u3066\u3044\u308b\u30dd\u30fc\u30c8\u304b\u3089\u3053\u308c\u3089\u306eIP\u30a2\u30c9\u30ec\u30b9\u306e\u80cc\u5f8c\u306b\u3069\u306e\u3088\u3046\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u3042\u308a\u3001\u305d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u8106\u5f31\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u63a8\u6e2c\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u653b\u6483\u8005\u306eWeb\u30b5\u30a4\u30c8\u306f\u3001\u5bfe\u8c61\u3068\u306a\u308b\u30b5\u30fc\u30d3\u30b9\u3092\u63a2\u3057\u51fa\u3057\u305f\u5f8c\u3001\u305d\u306eiframe\u5185\u3067DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6700\u521d\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u30db\u30b9\u30c8\u540d\u304b\u3089\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u3053\u306e\u653b\u6483\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u306eIP\u30a2\u30c9\u30ec\u30b9\u306b\u30ea\u30d0\u30a4\u30f3\u30c9\u3059\u308b\u307e\u3067\u3001\u30db\u30b9\u30c8\u540d\u306e\u89e3\u6c7a\u3092\u7e70\u308a\u8fd4\u3057\u5b9f\u884c\u3057\u307e\u3059\u3002\u305d\u3046\u3059\u308b\u3053\u3068\u3067\u88ab\u5bb3\u8005\u306b\u6c17\u3065\u304b\u308c\u305a\u306biframe\u306f\u5185\u90e8\u30b5\u30fc\u30d3\u30b9\u3068\u901a\u4fe1\u3092\u7d9a\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u653b\u6483\u3067\u306f\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306e\u6f5c\u5728\u7684\u30bf\u30fc\u30b2\u30c3\u30c8\u306e1\u3064\u3068\u3057\u3066\u3001HTTP\u30d9\u30fc\u30b9\u306e\u30b3\u30f3\u30bd\u30fc\u30eb\u3092\u6301\u3064\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30d5\u30e9\u6a5f\u5668\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u500b\u4eba\u5411\u3051\u30eb\u30fc\u30bf\u30fc\u304c\u653b\u6483\u306b\u5bfe\u3057\u3066\u8106\u5f31\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u30eb\u30fc\u30bf\u30fc\u306e\u591a\u304f\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3084\u5f31\u3044\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u4fb5\u5165\u8005\u304cIP\u30a2\u30c9\u30ec\u30b9\u3092\u63a8\u6e2c\u3059\u308b\u306e\u306f\u5bb9\u6613\u3067\u3001\u305d\u3046\u3057\u3066\u63a8\u6e2c\u3057\u305fIP\u306b\u60aa\u610f\u306e\u3042\u308b\u30db\u30b9\u30c8\u30cd\u30fc\u30e0\u3092\u30ea\u30d0\u30a4\u30f3\u30c9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u653b\u6483\u8005\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a2d\u5b9a\u30d1\u30cd\u30eb\u306b\u4fb5\u5165\u5f8c\u3001\u88ab\u5bb3\u8005\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u3057\u305f\u308a\u3001DOS\uff08\u30b5\u30fc\u30d3\u30b9\u62d2\u5426\uff09\u653b\u6483\u3092\u884c\u3063\u305f\u308a\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30cf\u30a4\u30b8\u30e3\u30c3\u30af\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_120346\" aria-describedby=\"caption-attachment-120346\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-120347 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/08\/chart.png\" alt=\"\u3053\u306e\u30b0\u30e9\u30d5\u306f\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u95a2\u9023\u3059\u308bCVE\u6570\u3092\u5e74\u3054\u3068\u306b\u8ffd\u8de1\u3057\u305f\u3082\u306e\u3067\u3059\u30022015\u5e74\u4ee5\u964d\u3001\u6bce\u5e74\u5c11\u306a\u304f\u3068\u30821\u3064\u306f\u5831\u544a\u304c\u3042\u308a\u307e\u3059\u3002\u95a2\u9023CVE\u6570\u306f2018\u5e74\u304b\u3089\u5927\u5e45\u306b\u5897\u52a0\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"900\" height=\"452\" \/><figcaption id=\"caption-attachment-120346\" class=\"wp-caption-text\">\u56f33 DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u95a2\u9023\u306eCVE\u306e\u52d5\u5411<\/figcaption><\/figure>\n<p>\u307e\u305f\u6700\u8fd1\u3067\u306f\u5bb6\u5ead\u3084\u30aa\u30d5\u30a3\u30b9\u306b\u666e\u53ca\u3057\u3066\u3044\u308b\u30b9\u30de\u30fc\u30c8\u30c7\u30d0\u30a4\u30b9\u304b\u3089\u306e\u8105\u5a01\u3082\u3042\u308a\u307e\u3059\u3002Web\u30d9\u30fc\u30b9\u306e\u30b3\u30f3\u30bd\u30fc\u30eb\u4ee5\u5916\u306b\u3082\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3067\u306f\u3001\u6700\u65b0\u306eIoT\u30c7\u30d0\u30a4\u30b9\u304c\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u9732\u51fa\u3055\u305b\u3066\u3044\u308b\u4ed6\u306eRESTful API\u3084\u30e6\u30cb\u30d0\u30fc\u30b5\u30eb\u30d7\u30e9\u30b0\u30a2\u30f3\u30c9\u30d7\u30ec\u30a4\u30d7\u30ed\u30c8\u30b3\u30eb\uff08UPnP\uff09\u30b5\u30fc\u30d0\u30fc\u3082\u5bfe\u8c61\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3089\u306eAPI\u306f\u3001\u6a5f\u80fd\u306e\u5b9f\u88c5\u3084\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u305f\u3081\u306b\u4e88\u7d04\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u306a\u304b\u306b\u306fDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u5bfe\u3059\u308b\u4fdd\u8b77\u304c\u5341\u5206\u3067\u306a\u3044\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002\u653b\u6483\u8005\u304c\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u3092\u4fb5\u5bb3\u3057\u3001\u30db\u30b9\u30c8\u540d\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306eIP\u30a2\u30c9\u30ec\u30b9\u306b\u30ea\u30d0\u30a4\u30f3\u30c9\u3059\u308b\u3068\u3001\u3053\u308c\u3089\u306e\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u4fb5\u5bb3\u3055\u308c\u305f\u30d6\u30e9\u30a6\u30b6\u306b\u5bfe\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30ad\u30e3\u30f3\u3084\u30bb\u30f3\u30b5\u30fc\u30c7\u30fc\u30bf\u306e\u6d41\u51fa\u3001\u8a8d\u8a3c\u4e0d\u8981\u306e\u30ea\u30e2\u30fc\u30c8\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306a\u3069\u3001\u4e00\u5b9a\u306e\u6a29\u9650\u3092\u4e0e\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u3002<a href=\"https:\/\/medium.com\/@brannondorsey\/attacking-private-networks-from-the-internet-with-dns-rebinding-ea7098a2d325\">DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u8106\u5f31\u6027<\/a>\u306f\u3001Google Home\u3001Sono WiFi Speaker\u3001Roku\u306a\u3069\u3001\u77e5\u540d\u5ea6\u306e\u9ad8\u3044\u4f01\u696d\u306e\u8907\u6570\u306e\u30b9\u30de\u30fc\u30c8\u30c7\u30d0\u30a4\u30b9\u3067\u3082\u898b\u3064\u304b\u3063\u3066\u3044\u307e\u3059\u3002\u56f33\u306b\u793a\u3059\u3088\u3046\u306b\u30012015\u5e74\u4ee5\u964d\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u95a2\u9023\u3059\u308bCVE\u30ec\u30b3\u30fc\u30c9\u306f\u6bce\u5e74\u5c11\u306a\u304f\u3068\u30821\u4ef6\u306f\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002\u95a2\u9023CVE\u6570\u306f2018\u5e74\u304b\u3089\u5927\u5e45\u306b\u5897\u52a0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_120348\" aria-describedby=\"caption-attachment-120348\" style=\"width: 647px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-120349 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/08\/word-image-64.png\" alt=\"\u5f0a\u793e\u306e\u691c\u8a3c\u74b0\u5883\u3067DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u306e\u30ea\u30b9\u30af\u3092\u793a\u3057\u305f\u3082\u306e\u3002\u3053\u3053\u3067\u5bfe\u8c61\u3068\u306a\u3063\u3066\u3044\u308b\u793e\u5185Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u793e\u5185\u306b\u3042\u308bHadoop\u306eWeb\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3002\u3053\u3053\u306b\u793a\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u3001\u5916\u90e8\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u3067\u3082\u3001\u3053\u306eUI\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308c\u3070\u30af\u30e9\u30b9\u30bf\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3067\u304d\u308b\uff08\u4e0b\u56f3\uff09\u3002 \" width=\"647\" height=\"532\" \/><figcaption id=\"caption-attachment-120348\" class=\"wp-caption-text\">\u56f34a \u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u305f\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u5185\u90e8Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff08Hadoop\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff09\u3002<\/figcaption><\/figure>\n<figure id=\"attachment_120350\" aria-describedby=\"caption-attachment-120350\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-120351 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/08\/word-image-65.png\" alt=\"\u3053\u3053\u306b\u793a\u3057\u305f\u3088\u3046\u306b\u3001\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u653b\u6483\u8005\u306eWeb\u30b5\u30a4\u30c8\u306b\u3088\u3063\u3066\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u308b\u3002 \" width=\"900\" height=\"508\" \/><figcaption id=\"caption-attachment-120350\" class=\"wp-caption-text\">\u56f34b \u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u8868\u793a\u3055\u308c\u308b\u653b\u6483\u8005\u306eWeb\u30b5\u30a4\u30c8<\/figcaption><\/figure>\n<figure id=\"attachment_120352\" aria-describedby=\"caption-attachment-120352\" style=\"width: 745px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-120353 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/08\/word-image-66.png\" alt=\"\u60aa\u610f\u306e\u3042\u308b\u30c9\u30e1\u30a4\u30f3\u3092\u901a\u3058\u3066\u3001\u653b\u6483\u8005\u306f\u5bfe\u8c61\u3068\u306a\u308bHadoop\u306eWeb\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u305f\u3068\u3048\u3070\u3001\u7ba1\u7406\u30da\u30fc\u30b8\u3067\u60c5\u5831\u3092\u76d7\u3093\u3060\u308a\u3001\u5b9f\u884c\u4e2d\u306e\u30b8\u30e7\u30d6\u3092\u7d42\u4e86\u3055\u305b\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \" width=\"745\" height=\"539\" \/><figcaption id=\"caption-attachment-120352\" class=\"wp-caption-text\">\u56f34c \u653b\u6483\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u8868\u793a\u3055\u308c\u305f\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u5185\u90e8Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/figcaption><\/figure>\n<p>\u4f01\u696d\u306b\u3068\u3063\u3066\u793e\u5185\u7ba1\u7406\u7528\u306eWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u91cd\u8981\u3067\u3059\u3002\u305d\u3046\u3057\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u306f\u6a5f\u5bc6\u60c5\u5831\u304c\u30db\u30b9\u30c8\u3055\u308c\u3066\u304a\u308a\u3001\u305d\u3053\u3067\u7ba1\u7406\u8005\u304c\u30b7\u30b9\u30c6\u30e0\u3092\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30de\u30b7\u30f3\u4e0a\u3067DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u304c\u884c\u308f\u308c\u305fWeb\u30b5\u30a4\u30c8\u304c\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u306e\u306f\u975e\u5e38\u306b\u5371\u967a\u3067\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u305d\u306e\u30ea\u30b9\u30af\u3092\u8aac\u660e\u3059\u308b\u305f\u3081\u3001\u5f0a\u793e\u691c\u8a3c\u74b0\u5883\u3067DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u3092\u884c\u3063\u3066\u307f\u307e\u3059\u3002\u5bfe\u8c61\u3068\u306a\u308b\u793e\u5185Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u3001Hadoop\u306e\u793e\u5185Web\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3067\u3059\u3002\u56f34a\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u88ab\u5bb3\u8005\u306fURL<span style=\"font-family: 'courier new', courier, monospace;\">10[.]0.0.6:8088\/cluster<\/span>\u3067\u3053\u306eUI\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308c\u3070\u3001\u5916\u90e8\u304b\u3089\u306f\u5229\u7528\u3067\u304d\u306a\u3044\u30af\u30e9\u30b9\u30bf\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u56f34b\u306f\u3001\u653b\u6483\u8005\u306eWeb\u30b5\u30a4\u30c8\u304c\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u30c8\u30ea\u30ac\u30fc\u3057\u305f\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u8981\u6c42\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u691c\u8a3c\u3067\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u30db\u30b9\u30c8\u540d\u3092<span style=\"font-family: 'courier new', courier, monospace;\">s-54.183.63.248-10.0.0.6-1609933722-fs-e.dynamic.dns-rebinding-attack[.]com<\/span>\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u30db\u30b9\u30c8\u540d\u306b\u5bfe\u3059\u308bHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u3001\u5b9f\u969b\u306b<span style=\"font-family: 'courier new', courier, monospace;\">10[.]0.0.6<\/span>\u306b\u9001\u4fe1\u3055\u308c\u3001successful\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u53d7\u4fe1\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u5f8c\u306f\u3001\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u3092\u30c8\u30f3\u30cd\u30eb\u3068\u3057\u3066\u5229\u7528\u3057\u3001\u653b\u6483\u8005\u306f\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u30b5\u30fc\u30d3\u30b9\u3068\u76f4\u63a5\u3084\u308a\u3068\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u56f34c\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u653b\u6483\u8005\u306f\u3001\u88ab\u5bb3\u8005\u304cHadoop\u30af\u30e9\u30b9\u30bf\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u306e\u3068\u540c\u3058\u60c5\u5831\u3092\u3001\u60aa\u610f\u306e\u3042\u308b\u30c9\u30e1\u30a4\u30f3\u3092\u901a\u3058\u3066\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u653b\u6483\u8005\u306f\u3001\u60c5\u5831\u3092\u7a83\u53d6\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u7ba1\u7406\u30da\u30fc\u30b8\u3067\u5b9f\u884c\u4e2d\u306e\u30b8\u30e7\u30d6\u3092\u7d42\u4e86\u3055\u305b\u308b\u6a29\u9650\u3082\u6301\u3061\u307e\u3059\u3002\u4eca\u56de\u306eHadoop\u306e\u4f8b\u3067\u898b\u305f\u3088\u3046\u306b\u3001\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u958b\u767a\u30fb\u7ba1\u7406\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u591a\u304f\u306f\u3001\u304d\u3061\u3093\u3068\u4fdd\u8b77\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u3088\u3063\u3066\u653b\u6483\u8005\u306b\u9732\u51fa\u3055\u305b\u3089\u308c\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>CSRF\u4fdd\u8b77\u3092\u30d0\u30a4\u30d1\u30b9\u3059\u308b<\/h3>\n<p>\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u306f\u3001\u653b\u6483\u8005\u306b\u5411\u3051\u3066\u5358\u306b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5229\u7528\u3057\u3066\u30c8\u30fc\u30af\u30f3\u30d9\u30fc\u30b9\u306eCSRF\u4fdd\u8b77\u3092\u56de\u907f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u304c\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u96a0\u853d\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001CSRF\u306f\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u76f4\u63a5\u9001\u4fe1\u3059\u308b\u3053\u3068\u3067\u30bf\u30fc\u30b2\u30c3\u30c8\u30b5\u30fc\u30d0\u30fc\u306e\u88ab\u5bb3\u8005\u306b\u5bfe\u3059\u308b\u4fe1\u983c\u3092\u60aa\u7528\u3057\u307e\u3059\u3002CSRF\u306f\u3088\u304f\u77e5\u3089\u308c\u305f\u8105\u5a01\u3067\u3042\u308a\u3001\u591a\u304f\u306eWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u3053\u306e\u8105\u5a01\u306b\u5bfe\u3059\u308b\u9632\u5fa1\u7b56\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002\u4e3b\u6d41\u3068\u306a\u3063\u3066\u3044\u308b\u4fdd\u8b77\u6226\u7565\u306e1\u3064\u306f\u6700\u521d\u306e\u5fdc\u7b54\u30da\u30fc\u30b8\u306b\u56fa\u6709\u306e\u30c8\u30fc\u30af\u30f3\u3092\u57cb\u3081\u8fbc\u3080\u3082\u306e\u3067\u3059\u3002\u305d\u306e\u5f8c\u306b\u7d9a\u304f\u3059\u3079\u3066\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u3053\u306e\u30c8\u30fc\u30af\u30f3\u3092\u4f7f\u7528\u3057\u3066\u9001\u4fe1\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u30b5\u30fc\u30d0\u30fc\u306b\u53d7\u3051\u5165\u308c\u3089\u308c\u307e\u305b\u3093\u3002\u3053\u306e\u6226\u7565\u306f\u3001\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u304c\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u3092\u9632\u6b62\u3059\u308b\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u306e\u5236\u9650\u306b\u57fa\u3065\u3044\u3066\u884c\u308f\u308c\u3066\u3044\u308b\u3082\u306e\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u653b\u6483\u8005\u306f\u30ec\u30b9\u30dd\u30f3\u30b9\u304b\u3089\u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u6709\u52b9\u306a\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u30c1\u30e3\u30f3\u30b9\u304c\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_120354\" aria-describedby=\"caption-attachment-120354\" style=\"width: 790px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-120355 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/08\/word-image-67.png\" alt=\"\u3053\u306e\u4f8b\u306f\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u3088\u308a\u3001RCE\uff08\u30ea\u30e2\u30fc\u30c8\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\uff09\u4fdd\u8b77\u3092\u76ee\u7684\u3068\u3057\u305f\u52d5\u7684\u30bb\u30c3\u30b7\u30e7\u30f3ID\u3092\u653b\u6483\u8005\u304c\u53d6\u5f97\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u56de\u907f\u3067\u304d\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u3002 \" width=\"790\" height=\"478\" \/><figcaption id=\"caption-attachment-120354\" class=\"wp-caption-text\">\u56f35 \u653b\u6483\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u8868\u793a\u3055\u308c\u305f\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u5185\u90e8Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/figcaption><\/figure>\n<p>\u3068\u3053\u308d\u304cDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u306e\u5834\u5408\u3001\u30d6\u30e9\u30a6\u30b6\u306f\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u6c17\u3065\u3051\u307e\u305b\u3093\u3002\u3053\u306e\u305f\u3081\u3001\u60aa\u610f\u306e\u3042\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u6700\u521d\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u304b\u3089CSRF\u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\u3057\u3066\u3001\u305d\u306e\u30c8\u30fc\u30af\u30f3\u3067\u305d\u306e\u5f8c\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u507d\u9020\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u79c1\u305f\u3061\u306f\u3001\u3053\u306e\u8105\u5a01\u3092\u5b9f\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001Singularity\u306e\u30ea\u30e2\u30fc\u30c8\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\uff08RCE\uff09\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u691c\u8a3c\u74b0\u5883\u3067\u8d77\u52d5\u3055\u305b\u307e\u3057\u305f\u3002\u3053\u306e\u653b\u6483\u306f\u3001Ruby\u3067\u66f8\u304b\u308c\u305fWeb\u958b\u767a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3042\u308bRails\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u3057\u3066\u3044\u307e\u3059\u3002Rails\u3067\u4e88\u7d04\u3055\u308c\u3066\u3044\u308bPUT API\u306e1\u3064\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u8981\u6c42\u8005\u306f\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067\u4efb\u610f\u306e\u30b7\u30b9\u30c6\u30e0\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002CSRF\u30c8\u30fc\u30af\u30f3\u3068\u540c\u69d8\u306b\u3001\u3053\u306eAPI\u3067\u306f\u3001\u8a2a\u554f\u8005\u304c\u52d5\u7684\u306a\u30bb\u30c3\u30b7\u30e7\u30f3ID\uff08\u56f35\u306e\u8d64\u3067\u30de\u30fc\u30af\u3055\u308c\u305f\u6587\u5b57\u5217\uff09\u3092\u542b\u3080\u30ea\u30af\u30a8\u30b9\u30c8URL\u3092\u751f\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u3053\u306eID\u304c\u30e1\u30a4\u30f3\u30da\u30fc\u30b8\u306b\u57cb\u3081\u8fbc\u307e\u308c\u307e\u3059\u3002Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u305d\u306e\u5834\u3067\u65b0\u3057\u3044\u30c8\u30fc\u30af\u30f3\u3092\u751f\u6210\u3057\u3001\u5404\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u30c8\u30fc\u30af\u30f3\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3057\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8aad\u307e\u305a\u306b\u3001\u6709\u52b9\u306aAPI\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u4e88\u6e2c\u3059\u308b\u3053\u3068\u306f\u4e0d\u53ef\u80fd\u3067\u3059\u3002\u3068\u3053\u308d\u304c\u3001Singularity\u306eRCE\u30da\u30a4\u30ed\u30fc\u30c9\u306fDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u5b9f\u884c\u3059\u308c\u3070index\u30da\u30fc\u30b8\u304b\u3089\u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u306e\u30c7\u30e2\u3067\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u30b5\u30a4\u30c8\u3067\u30d6\u30e9\u30a6\u30b6\u306e\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u7a83\u53d6\u3055\u308c\u305f\u30bb\u30c3\u30b7\u30e7\u30f3ID\u3092\u8868\u793a\u3055\u305b\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5f8c\u306f\u3001\u76ee\u7684\u306eURL\u3092\u3046\u307e\u304f\u7d44\u307f\u7acb\u3066\u3066\u3001\u8106\u5f31\u306aAPI\u3092\u5229\u7528\u3057\u3066\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u4efb\u610f\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u30bf\u30fc\u30df\u30ca\u30eb\u306b\u300cHello from rebinding test\uff08\u30ea\u30d0\u30a4\u30f3\u30c9\u30c6\u30b9\u30c8\u304b\u3089\u3053\u3093\u306b\u3061\u306f\uff09\u300d\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002Singularity\u30c1\u30fc\u30e0\u306b\u3088\u308b\u540c\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u516c\u958b\u5f8c\u3001Raisl\u306f\u3059\u3079\u3066\u306e\u53d7\u4fe1\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u3064\u3044\u3066\u30db\u30b9\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u691c\u8a3c\u3059\u308b<a href=\"https:\/\/github.com\/rails\/rails\/pull\/33145\">\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u306e\u7de9\u548c\u7b56\u3092<\/a>\u5b9f\u65bd\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u304b\u3089\u306e\u4fdd\u8b77<\/h2>\n<p>DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u3092\u7de9\u548c\u3059\u308b\u305f\u3081\u306b\u3001\u95a2\u9023\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3054\u3068\u306b\u3055\u307e\u3056\u307e\u306a\u6226\u7565\u304c\u8a66\u307f\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u9632\u5fa1\u30e1\u30ab\u30cb\u30ba\u30e0\u3068\u305d\u306e\u9650\u754c\u306b\u3064\u3044\u3066\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u79c1\u305f\u3061\u306eDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u691c\u51fa\u5668\u306e\u57fa\u672c\u7684\u306a\u8003\u3048\u65b9\u3068\u305d\u306e\u5229\u70b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30d6\u30e9\u30a6\u30b6\u30d9\u30fc\u30b9\u306e\u7de9\u548c\u7b56<\/h3>\n<p>Chrome\u3084Firefox\u306a\u3069\u6700\u65b0\u306e\u30d6\u30e9\u30a6\u30b6\u306fDNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u3092\u9632\u3050\u305f\u3081\u306bDNS\u306ePinning\uff08\u30d4\u30f3\u7559\u3081\uff09\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3067\u306f\u3001DNS\u30ec\u30b3\u30fc\u30c9\u306eTTL\uff08time-to-live\uff09\u5024\u306b\u95a2\u4fc2\u306a\u304f\u4e00\u5b9a\u671f\u9593\u3001DNS\u306e\u540d\u524d\u89e3\u6c7a\u306e\u7d50\u679c\u3092\u30d6\u30e9\u30a6\u30b6\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u305b\u307e\u3059\u3002\u3053\u306e\u7d50\u679c\u3001\u3053\u306e\u671f\u9593\u5185\u306b\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30a4\u30c8\u304cDNS\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u7e70\u308a\u8fd4\u3057\u3066\u30db\u30b9\u30c8\u540d\u3092\u30ea\u30d0\u30a4\u30f3\u30c9\u3055\u305b\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u4fdd\u8b77\u306f\u30d6\u30e9\u30a6\u30b6\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30d5\u30e9\u3092\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u306e\u3067\u4fbf\u5229\u3067\u3042\u308b\u53cd\u9762\u3001\u5b9f\u8cea\u7684\u306b\u30d6\u30ed\u30c3\u30af\u304c\u53ef\u80fd\u306a\u306e\u306f\u3001DNS\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u653b\u6483\u306e\u5f93\u6765\u304b\u3089\u3042\u308b\u5b9f\u88c5\u3001\u6642\u9593\u5909\u52d5\u578b\u653b\u6483\u306e\u307f\u3067\u3059\u3002\u6642\u9593\u5909\u52d5\u578b\u653b\u6483\u306e\u5b9f\u88c5\u3067\u306f\u3001\u653b\u6483\u8005\u306f\u60aa\u610f\u306e\u3042\u308b\u30db\u30b9\u30c8\u540d\u306eDNS\u30ec\u30b3\u30fc\u30c9\u306b\u6975\u3081\u3066\u4f4e\u3044TTL\u3092\u5272\u308a\u5f53\u3066\u3066\u304a\u304d\u307e\u3059\u3002\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u8aad\u307f\u8fbc\u307e\u308c\u305f\u30ea\u30d0\u30a4\u30f3\u30c9\u7528\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u3001\u3053\u306eDNS\u30ec\u30b3\u30fc\u30c9\u306e\u6709\u52b9\u671f\u9650\u304c\u5207\u308c\u308b\u306e\u3092\u5f85\u3061\u3001\u305d\u306e\u30db\u30b9\u30c8\u540d\u306b\u5bfe\u3059\u308b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u518d\u5ea6\u540d\u524d\u89e3\u6c7a\u3092\u3057\u3066\u30bf\u30fc\u30b2\u30c3\u30c8\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u623b\u3063\u3066\u304f\u308b\u3053\u3068\u3092\u671f\u5f85\u3057\u307e\u3059\u3002\u3053\u306e\u30b7\u30ca\u30ea\u30aa\u3067DNS\u30d4\u30f3\u7559\u3081\u30c6\u30af\u30cb\u30c3\u30af\u306f\u4f4e\u3044TTL\u3092\u7121\u8996\u3057\u30012\u56de\u76ee\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u30821\u56de\u76ee\u3068\u540c\u3058\u7d50\u679c\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057DNS\u30d4\u30f3\u7559\u3081\u306e\u4fdd\u8b77\u3092\u56de\u907f\u3059\u308b\u65b9\u6cd5\u306f\u8907\u6570\u3042\u308a\u307e\u3059\u3002\u7c21\u5358\u306a\u56de\u907f\u65b9\u6cd5\u306e1\u3064\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u5207\u308c\u308b\u307e\u3067\u7e70\u308a\u8fd4\u3057\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u60aa\u610f\u306e\u3042\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u8a2d\u8a08\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u305d\u3046\u3059\u308c\u3070\u60aa\u610f\u306e\u3042\u308b\u30db\u30b9\u30c8\u540d\u304c\u30bf\u30fc\u30b2\u30c3\u30c8\u306eIP\u30a2\u30c9\u30ec\u30b9\u306b\u30ea\u30d0\u30a4\u30f3\u30c9\u3055\u308c\u3001\u653b\u6483\u8005\u306eWeb\u30b5\u30a4\u30c8\u306f\u5bfe\u8c61\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u671f\u5f85\u3057\u305f\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><figure id=\"attachment_120356\" aria-describedby=\"caption-attachment-120356\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-120357 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/08\/word-image-68.png\" alt=\"\u3053\u306e\u56f3\u306f\u3001\u8907\u6570\u306eA\u30ec\u30b3\u30fc\u30c9\u3092\u4f7f\u3063\u305f\u653b\u6483\u306e\u4ed5\u7d44\u307f\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u56f3\u306e\u5de6\u7aef\u306f\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u767a\u751f\u3059\u308b\u3053\u3068\u3001\u53f3\u7aef\u306f\u30d1\u30d6\u30ea\u30c3\u30af\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u767a\u751f\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u8aac\u660e\u3055\u308c\u3066\u3044\u308b\u624b\u9806\u306f 1. \u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u60aa\u610f\u306e\u3042\u308bDNS\u30ea\u30be\u30eb\u30d0\u306b\u300cattack[.]com\u306eIP\u306f\u4f55\u3067\u3059\u304b\u300d\u3068\u5c0b\u306d\u307e\u3059\u3002\u60aa\u610f\u306e\u3042\u308b\u30ea\u30be\u30eb\u30d0\u306f\u3001\u300cattack[.]com\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u300d\u3068\u5fdc\u7b54\u3057\u307e\u3059\u30023. \u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30fc\u30d0\u30fc\u304c\u3001\u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u60aa\u610f\u306e\u3042\u308b\u30ea\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u9001\u4fe1\u3057\u307e\u3059\u30024. \u88ab\u5bb3\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u306f\u3001\u4eca\u5ea6\u306f\u60aa\u610f\u306e\u3042\u308bWeb\u30b5\u30fc\u30d0\u30fc\u306b\u5411\u3051\u30662\u56de\u76ee\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u307e\u3059\u30025. 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of compromise 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