{"id":109715,"date":"2020-12-07T06:00:08","date_gmt":"2020-12-07T14:00:08","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=109715"},"modified":"2022-10-26T18:00:32","modified_gmt":"2022-10-27T01:00:32","slug":"cve-2019-0708-bluekeep","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/cve-2019-0708-bluekeep\/","title":{"rendered":"Windows RDP \u8106\u5f31\u6027 CVE-2019-0708 (BlueKeep) \u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8: Refresh Rect PDU \u3068 RDPDR Client Name Request PDU \u3092\u4f7f\u3044\u30b7\u30b9\u30c6\u30e0\u6a29\u9650\u3067\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c"},"content":{"rendered":"<h2><strong>\u6982\u8981<\/strong><\/h2>\n<p>2019\u5e745\u6708\u3001Microsoft\u306f\u5b9a\u4f8b\u5916\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u516c\u958b\u3057\u307e\u3057\u305f\u3002 \u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\uff08RCE\uff09\u8106\u5f31\u6027CVE-2019-0708\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u3067\u3001\u540c\u8106\u5f31\u6027\u306f\u300cBlueKeep\u300d\u3068\u3044\u3046\u540d\u524d\u3067\u3082\u77e5\u3089\u308c\u3001Remote Desktop Services\uff08RDS\uff09\u306b\u5b58\u5728\u3057\u307e\u3059\u3002\u6628\u5e74\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u305f\u3061\u306f\u540c\u8106\u5f31\u6027\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304c\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u5b9f\u8a3c\u3057\u305f\u3046\u3048\u3067\u305d\u306e\u691c\u51fa\u30fb\u9632\u6b62\u7b56\u3092\u63d0\u6848\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u4eca\u65e5\u306b\u3044\u305f\u308b\u3082RDP\u306f\u653b\u6483\u8005\u304c\u3082\u3063\u3068\u3082\u597d\u3093\u3067\u60aa\u7528\u3059\u308b\u653b\u6483\u30d9\u30af\u30c8\u30eb\u306e1\u3064\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u672c\u7a3f\u3067\u306f\u3001\u653b\u6483\u8005\u304c\u3069\u306e\u3088\u3046\u306b\u3057\u3066Windows RDP\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067BlueKeep\u3092\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3057\u3046\u308b\u304b\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002RDP\u306e\u653b\u6483\u6210\u529f\u3092\u9632\u304e\u3001Windows\u30e6\u30fc\u30b6\u30fc\u3068\u304a\u5ba2\u69d8\u74b0\u5883\u3092\u9069\u5207\u306b\u4fdd\u8b77\u3057\u3066\u3044\u304f\u306e\u306b\u305c\u3072\u304a\u5f79\u7acb\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u3055\u3066\u30012019\u5e748\u6708\u3001Unit42\u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u306f<a href=\"https:\/\/unit42.paloaltonetworks.jp\/exploitation-of-windows-cve-2019-0708-bluekeep-three-ways-to-write-data-into-the-kernel-with-rdp-pdu\/\">CVE-2019-0708<\/a>\u306b\u95a2\u3059\u308b\u30d6\u30ed\u30b0\u3092\u516c\u958b\u3057\u3001\u305d\u306e\u306a\u304b\u3067Bitmap Cache PDU\uff08Protocol Data Unit\uff09\u3001Refresh Rect PDU\u3001RDPDR Client Name Request PDU\u3092\u4f7f\u3063\u3066Windows\u306e\u30ab\u30fc\u30cd\u30eb\u30e1\u30e2\u30ea\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u3055\u3089\u306b2019\u5e7410\u6708\u306b\u306f\u3001Microsoft\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ab\u30f3\u30d5\u30a1\u30ec\u30f3\u30b9BlueHat Seattle 2019\u306b\u3066\u3001RDP PDU\u3092\u4f7f\u7528\u3057\u305f3\u3064\u306e\u65b0\u3057\u3044Windows\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u98a8\u6c34\uff08\u30d2\u30fc\u30d7\u98a8\u6c34\uff09\u30c6\u30af\u30cb\u30c3\u30af\u3068BlueKeep\u306e2\u3064\u306e\u7570\u306a\u308b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3064\u3044\u3066<a href=\"https:\/\/unit42.paloaltonetworks.jp\/unit-42-presents-new-research-at-bluehat-seattle-on-three-new-windows-rdp-vulnerability-exploit-methods\/\">\u30d7\u30ec\u30bc\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3<\/a>\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u672c\u7a3f\u306f\u3001Refresh Rect PDU\u3068RDPDR Client Name Request PDU\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u30b7\u30b9\u30c6\u30e0\u6a29\u9650\u3067\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\uff08RCE\uff09\u6a29\u9650\u3092\u5f97\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u8105\u5a01\u9632\u6b62\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u306f\u672c\u8106\u5f31\u6027\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305fCortex XDR\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u306fWindows XP\u3001Windows 7\u3001Windows Server 2003\u3001Windows Server 2008\u4e0a\u3067\u306e\u672c\u8106\u5f31\u6027\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-109674-_soql5tsd29yx\"><\/a><strong> Refresh Rect PDU\u3001RDPDR Client Name Request PDU\u306b\u3064\u3044\u3066\u306e\u7c21\u5358\u306a\u304a\u3055\u3089\u3044<\/strong><\/h2>\n<p>\u524d\u56de\u306e<a href=\"https:\/\/unit42.paloaltonetworks.jp\/exploitation-of-windows-cve-2019-0708-bluekeep-three-ways-to-write-data-into-the-kernel-with-rdp-pdu\/\">BlueKeep<\/a>\u306b\u95a2\u3059\u308b\u30d6\u30ed\u30b0\u3067\u306f\u3001Windows RDP\u30d7\u30ed\u30c8\u30b3\u30eb\u306eRefresh Rect PDU\u3068RDPDR Client Name Request PDU\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u3054\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u307e\u305a\u306f\u3053\u308c\u30892\u3064\u306ePDU\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>Refresh Rect PDU\u306f\u3001PDU\u3092\u8907\u6570\u56de\u9001\u4fe1\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u30b5\u30a4\u30ba0x828\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u3092\u591a\u6570\u30b9\u30d7\u30ec\u30fc\u3059\u308b\u7528\u9014\u306b\u4f7f\u3048\u307e\u3059\u3002\u3053\u308c\u3089\u30b5\u30a4\u30ba0x828\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306f\u30010x1000\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u3054\u3068\u306b\u6574\u5217\u3055\u308c\u3066\u3044\u3066\u3001\u30b5\u30a4\u30ba0x828\u306e\u5404\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u5185\u306b\u306f\u30010x2c\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u3067\u3001RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u5236\u5fa1\u3059\u308b8\u30d0\u30a4\u30c8\u5206\u306e\u30c7\u30fc\u30bf\u304c\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306eRDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u5236\u5fa1\u3059\u308b8\u30d0\u30a4\u30c8\u306e\u30c7\u30fc\u30bf\u306e\u958b\u59cb\u30a2\u30c9\u30ec\u30b9\u306f<span style=\"font-family: 'courier new', courier, monospace;\">0x8xxxx02c<\/span>\u3068\u3044\u3046\u5f62\u3092\u3057\u3066\u3044\u307e\u3059\u3002VMware\u4eee\u60f3\u30de\u30b7\u30f3\u4e0a\u3067\u306e\u30c6\u30b9\u30c8\u3067\u306f\u3001\u30b5\u30a4\u30ba0x828\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u304c\u30a2\u30c9\u30ec\u30b9<span style=\"font-family: 'courier new', courier, monospace;\">0x86000000<\/span>\u304b\u3089<span style=\"font-family: 'courier new', courier, monospace;\">0x8a000000<\/span>\u307e\u3067\u30b5\u30a4\u30ba<span style=\"font-family: 'courier new', courier, monospace;\">0x1000<\/span>\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u30aa\u30d5\u30bb\u30c3\u30c8\u9593\u9694\u3067\u304d\u3063\u3061\u308a\u9023\u7d9a\u3057\u3066\u4e26\u3073\u307e\u3057\u305f\u3002\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u6982\u5ff5\u5b9f\u8a3c\uff08PoC\uff09\u3067\u306f\u3001\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3092\u683c\u7d0d\u3059\u308b\u56fa\u5b9a\u30a2\u30c9\u30ec\u30b9\u3068\u3057\u3066<span style=\"font-family: 'courier new', courier, monospace;\">0x86c1002c<\/span>\u3092\u4f7f\u7528\u3057\u3066\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u7e70\u308a\u8fd4\u3057\u884c\u3044\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u518d\u8d77\u52d5\u3057\u3066\u3082\u975e\u5e38\u306b\u9ad8\u3044\u6210\u529f\u7387\u3092\u5f97\u3089\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u307b\u304b\u3001\u30a2\u30c9\u30ec\u30b9<span style=\"font-family: 'courier new', courier, monospace;\">0x88xxx02c<\/span><span style=\"font-family: 'courier new', courier, monospace;\">\u3084<\/span><span style=\"font-family: 'courier new', courier, monospace;\">0x89xxx02c<\/span>\u3082\u30e1\u30e2\u30ea\u6d88\u8cbb\u91cf\u306e\u591a\u3044\u6a19\u7684\u30de\u30b7\u30f3\uff08\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u591a\u6570\u540c\u6642\u5b9f\u884c\u3057\u3066\u3044\u308bRDP\u30b5\u30fc\u30d0\u30fc\u306a\u3069\uff09\u3067\u975e\u5e38\u306b\u512a\u308c\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u767a\u63ee\u3059\u308b\u3088\u3044\u5019\u88dc\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>RDPDR Client Name Request PDU\u306f\u3001PDU\u3092\u8907\u6570\u56de\u9001\u4fe1\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u5236\u5fa1\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3067\u89e3\u653e\u6e08\u307f\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f7f\u7528\u3059\u308b\u306e\u306b\u4f7f\u3048\u307e\u3059\u3002RDP\u30b5\u30fc\u30d0\u30fc\u304cClient Name Request PDU\u3092\u30d1\u30fc\u30b9\u3059\u308b\u3055\u3044\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306e\u30b5\u30a4\u30ba\u3068\u30c7\u30fc\u30bf\u306f\u3044\u305a\u308c\u3082\u5236\u5fa1\u53ef\u80fd\u3067\u3001RDP\u30b5\u30fc\u30d0\u30fc\u306b\u30b5\u30a4\u30ba0xd0\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u3092\u5272\u308a\u5f53\u3066\u3055\u305b\u3001\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306b\u7279\u5225\u306b\u7d30\u5de5\u3057\u305f\u30c7\u30fc\u30bf\u3092\u30b9\u30d7\u30ec\u30fc\u3059\u308b\u3053\u3068\u3067\u3001\u5236\u5fa1\u53ef\u80fd\u306a\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3067\u95a2\u6570\u547c\u3073\u51fa\u3057\u5b9f\u884c\u306e\u518d\u4f7f\u7528\u30d5\u30ed\u30fc\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3057\u3001\u305d\u308c\u306b\u3088\u3063\u3066EIP (Extended Instruction Pointer) \u306e\u5236\u5fa1\u3092\u596a\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u307b\u304b\u306b\u3082\u3001RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067Client Name Request PDU\u306e\u30b5\u30a4\u30ba\u3068\u30c7\u30fc\u30bf\u3092\u4e21\u65b9\u5236\u5fa1\u3067\u304d\u308b\u3053\u3068\u304b\u3089\u3001Client Name Request PDU\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u306e\u306b\u3082\u4f7f\u3048\u307e\u3059\u3002\u3053\u308c\u30892\u3064\u306ePDU\u304c\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u5185\u3067\u3069\u306e\u3088\u3046\u306b\u4f7f\u7528\u3055\u308c\u308b\u304b\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2><strong>\u8106\u5f31\u6027\u306e\u6982\u8981<\/strong><\/h2>\n<p>\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u3001\u307e\u305aCVE-2019-0708\u306e\u6839\u672c\u539f\u56e0\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002CVE-2019-0708\u306f\u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308bMS_T120\u4eee\u60f3\u30c1\u30e3\u30cd\u30eb\u306b\u95a2\u9023\u3057\u305fUse After Free\uff08UAF: \u89e3\u653e\u6e08\u307f\u30e1\u30e2\u30ea\u4f7f\u7528\uff09\u8106\u5f31\u6027\u3067\u3059\u3002MS_T120\u4eee\u60f3\u30c1\u30e3\u30cd\u30eb\u3068\u3044\u3046\u306e\u306f\u3001RDP\u30b5\u30fc\u30d0\u30fc\u304c\u5185\u90e8\u7684\u306b\u4f7f\u7528\u3059\u308b2\u3064\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30c1\u30e3\u30cd\u30eb\uff08MS_T120\u304a\u3088\u3073CTXTW\uff09\u306e1\u3064\u3067\u3001RDP\u63a5\u7d9a\u78ba\u7acb\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u521d\u671f\u5316\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3057RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u300cMS_T120\u300d\u3068\u3044\u3046\u540d\u524d\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305f\u4eee\u60f3\u30c1\u30e3\u30cd\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\uff08\u56f31\u53c2\u7167\uff09\u3002\u305d\u306e\u305f\u3081\u306b\u306f\u3001\u300cMS_T120\u300d\u3068\u3044\u3046\u9805\u76ee\u3092Client MCS Connect Initial PDU\u306echannelDefArray\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109677\" aria-describedby=\"caption-attachment-109677\" style=\"width: 601px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109678 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image.png\" alt=\"\u56f31\u306f\u9752\u3067 name: MS_T120 \u3092\u5f37\u8abf\u8868\u793a\u3057\u3066\u3044\u308b\u3002\u3053\u3053\u3067\u306f\u3001RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304cchannelDefArray\u306b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305fMS_T120\u30c1\u30e3\u30cd\u30eb\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u308b \" width=\"601\" height=\"568\" \/><figcaption id=\"caption-attachment-109677\" class=\"wp-caption-text\">\u56f31 \u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u305fMS_T120\u30c1\u30e3\u30f3\u30cd\u30eb\u3092channelDefArray\u306b\u4f5c\u6210<\/figcaption><\/figure>\n<p>RDP\u30b5\u30fc\u30d0\u30fc\u306f\u3053\u306e\u8981\u6c42\u3092\u53d7\u4fe1\u3059\u308b\u3068ChannelPointerTable\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306bMS_T120\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u53c2\u7167\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u56f32\u306fChannelPointerTable\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b2\u3064\u306e\u300cMS_T120\u300d\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167\u304c\u3042\u308b\u3088\u3046\u3059\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u30021\u3064\u76ee\u306fClient MCSConnect Initial PDU\u306e\u8981\u6c42\u7528\u306b\u4f5c\u6210\u3055\u308c\u30012\u3064\u76ee\u306fRDP\u30b5\u30fc\u30d0\u30fc\u304c\u5185\u90e8\u3067\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109680\" aria-describedby=\"caption-attachment-109680\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109680 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-1.png\" alt=\"\u3053\u308c\u3089\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306f\u3001ChannelPointerTable\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b2\u3064\u306e\u300cMS_T120\u300d\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167\u304c\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\" width=\"900\" height=\"326\" \/><figcaption id=\"caption-attachment-109680\" class=\"wp-caption-text\">\u56f32 \u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u305fMS_T120\u30c1\u30e3\u30f3\u30cd\u30eb\u3092\u4f5c\u6210<\/figcaption><\/figure>\n<p>\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u305fMS_T120\u30c1\u30e3\u30cd\u30eb\u3092MCS Channel Join Request\u3067\u767b\u9332\u3059\u308c\u3070RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306fMS_T120\u30c1\u30e3\u30cd\u30eb\u3092\u30aa\u30fc\u30d7\u30f3\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u3057\u3066RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u7d30\u5de5\u3057\u305f\u30c7\u30fc\u30bf\u3092MS_T120\u30c1\u30e3\u30cd\u30eb\u306b\u9001\u4fe1\u3059\u308b\u3068\uff08\u56f33\u53c2\u7167\uff09\u3001rdpwx.dll\u30e2\u30b8\u30e5\u30fc\u30eb\u306e<span style=\"font-family: 'courier new', courier, monospace;\">MCSPortData<\/span> \u95a2\u6570\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109681\" aria-describedby=\"caption-attachment-109681\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109682 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-2.png\" alt=\"RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u7d30\u5de5\u3057\u305f\u30c7\u30fc\u30bf\u3092MS_T120\u30c1\u30e3\u30cd\u30eb\u306b\u9001\u4fe1\u3059\u308b\u3068rdpwx.dll\u30e2\u30b8\u30e5\u30fc\u30eb\u306eMCSPortData\u95a2\u6570\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002 \" width=\"900\" height=\"552\" \/><figcaption id=\"caption-attachment-109681\" class=\"wp-caption-text\">\u56f33 PDU\u3092\u4f7f\u3063\u3066MS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u89e3\u653e<\/figcaption><\/figure>\n<p>\u95a2\u6570<span style=\"font-family: 'courier new', courier, monospace;\">MCSPortData<\/span>\u306e1\u3064\u76ee\u306e\u5f15\u6570 lpAddend \u306e\u30aa\u30d5\u30bb\u30c3\u30c80x74\u304b\u3089\u59cb\u307e\u308b\u30c7\u30fc\u30bf\u306f\u3001RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u5236\u5fa1\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u3067\u3001\u5909\u6570v2\u306e\u5024\u304c2\u306b\u7b49\u3057\u3051\u308c\u3070<span style=\"font-family: 'courier new', courier, monospace;\">MCSChannelClose<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3001MS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u89e3\u653e\u3055\u308c\u307e\u3059\uff08\u56f34\u53c2\u7167\uff09\u3002<\/p>\n<figure id=\"attachment_109684\" aria-describedby=\"caption-attachment-109684\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109684 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-3.png\" alt=\"\u5909\u6570v2\u306e\u5024\u304c2\u306b\u7b49\u3057\u3051\u308c\u3070MCSChannelClose\u304c\u547c\u3073\u51fa\u3055\u308c\u3001MS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u89e3\u653e\u3055\u308c\u307e\u3059\u3002\u8d64\u3044\u77e9\u5f62\u306fedi\u304cRDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u7d30\u5de5\u3057\u305f\u30c7\u30fc\u30bf\u3092\u30dd\u30a4\u30f3\u30c8\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002 \" width=\"900\" height=\"503\" \/><figcaption id=\"caption-attachment-109684\" class=\"wp-caption-text\">\u56f34 MCSPortData\u5185\u3067\u30c1\u30e3\u30cd\u30eb\u3092\u30af\u30ed\u30fc\u30ba<\/figcaption><\/figure>\n<p>MS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u89e3\u653e\u5f8c\u3082\u3001\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u3059\u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\u304c1\u3064\u3001ChannelPointerTable\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b9\u30ed\u30c3\u30c80x1f\u306b\u6b8b\u3063\u3066\u3044\u307e\u3059\uff08\u56f35\u53c2\u7167\uff09\u3002<\/p>\n<figure id=\"attachment_109685\" aria-describedby=\"caption-attachment-109685\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109686 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-4.png\" alt=\"MS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u89e3\u653e\u5f8c\u3082\u3001\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u3059\u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\u304c1\u3064\u3001ChannelPointerTable\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b9\u30ed\u30c3\u30c80x1f\u306b\u6b8b\u3063\u3066\u3044\u307e\u3059\u3002 \" width=\"900\" height=\"328\" \/><figcaption id=\"caption-attachment-109685\" class=\"wp-caption-text\">\u56f35 \u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u89e3\u653e\u3057\u305f\u3068\u3053\u308d\u3002edi\u304cRDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u7d30\u5de5\u3057\u305f\u30c7\u30fc\u30bf\u3092\u6307\u3057\u3066\u3044\u308b<\/figcaption><\/figure>\n<p>RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u63a5\u7d9a\u304c\u5207\u65ad\u3055\u308c\u308b\u3068\u3001\u95a2\u6570<span style=\"font-family: 'courier new', courier, monospace;\">RDPWD!SignalBrokenConnection<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3001\u6b21\u306b\u95a2\u6570<span style=\"font-family: 'courier new', courier, monospace;\">termdd!IcaChannelInput<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3066\u30b9\u30ed\u30c3\u30c80x1f\u306b\u3042\u308b\u89e3\u653e\u6e08\u307fMS_T120\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\uff08\u56f36\u53c2\u7167\uff09\u3002<\/p>\n<figure id=\"attachment_109687\" aria-describedby=\"caption-attachment-109687\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109688 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-5.png\" alt=\"RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u63a5\u7d9a\u304c\u5207\u65ad\u3055\u308c\u308b\u3068\u3001\u95a2\u6570RDPWD!SignalBrokenConnection\u304c\u547c\u3073\u51fa\u3055\u308c\u3001\u6b21\u306b\u95a2\u6570termdd!IcaChannelInput\u304c\u547c\u3073\u51fa\u3055\u308c\u3066\u3001\u30b9\u30ed\u30c3\u30c80x1f\u306b\u3042\u308b\u89e3\u653e\u6e08\u307fMS_T120\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002\" width=\"900\" height=\"235\" \/><figcaption id=\"caption-attachment-109687\" class=\"wp-caption-text\">\u56f36 \u89e3\u653e\u6e08\u307fMS_T120\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30fc\u30eb\u30b9\u30bf\u30c3\u30af\u3092\u518d\u4f7f\u7528<\/figcaption><\/figure>\n<h2><strong>\u89e3\u653e\u6e08\u307f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u518d\u4f7f\u7528<\/strong><\/h2>\n<p>\u3053\u3053\u307e\u3067\u306f\u3001ChannelPointerTable\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5185\u306bMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\u3092\u6b8b\u3057\u305f\u72b6\u614b\u3067\u3001MS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u89e3\u653e\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u3053\u304b\u3089\u306f\u3001\u89e3\u653e\u6e08\u307f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u95a2\u6570<span style=\"font-family: 'courier new', courier, monospace;\">termdd!IcaChannelInput<\/span>\u5185\u3067\u3001\u95a2\u6570<span style=\"font-family: 'courier new', courier, monospace;\">IcaFindChannel<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3066\u3001\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u898b\u3064\u3051\u307e\u3059\u3002RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u63a5\u7d9a\u304c\u7d42\u4e86\u3059\u308b\u3068\u30012\u3064\u76ee\u306e\u5f15\u6570slot_base\u306f0x05\u306b\u306a\u308a\u30013\u3064\u76ee\u306e\u5f15\u6570slot_index\u306f0x1f\u306b\u306a\u308b\u306e\u3067\u3001\u95a2\u6570<span style=\"font-family: 'courier new', courier, monospace;\">IcaFindChannel<\/span>\u306f\u3001\u623b\u308a\u5024\u306b\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f7f\u7528\u3059\u308c\u3070\u3001\u3053\u306e\u5f8c\u306e\u95a2\u6570\u306e\u5b9f\u884c\u7d4c\u8def\u3092\u3001\u95a2\u6570\u547c\u3073\u51fa\u3057\uff08<span style=\"font-family: 'courier new', courier, monospace;\">call [eax]<\/span>\uff09\u306b\u3088\u3063\u3066\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u3055\u3044\u306f\u3001\u95a2\u6570\u547c\u3073\u51fa\u3057\u5185\u3067\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\uff08\u30ec\u30b8\u30b9\u30bfeax\uff09\u3092\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u53d6\u5f97\u3057\u307e\u3059\uff08\u56f37\u53c2\u7167\uff09\u3002<\/p>\n<figure id=\"attachment_109689\" aria-describedby=\"caption-attachment-109689\" style=\"width: 790px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109690 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-6.png\" alt=\"\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f7f\u7528\u3059\u308c\u3070\u3001\u3064\u3065\u304f\u95a2\u6570\u306e\u5b9f\u884c\u30d5\u30ed\u30fc\u3092\u95a2\u6570\u547c\u3073\u51fa\u3057\uff08call [eax]\uff09\u306b\u3088\u3063\u3066\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u3053\u306e\u95a2\u6570\u547c\u3073\u51fa\u3057\u5185\u3067\u3001\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\uff08\u30ec\u30b8\u30b9\u30bfeax\uff09\u3092\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u53d6\u5f97\u3059\u308b\u306e\u3067\u3059\u3002\u8d64\u3044\u77e9\u5f62\u306f\u30b3\u30fc\u30c9\u306e\u91cd\u8981\u90e8\u5206\u3092\u5f37\u8abf\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u7dd1\u306e\u77e9\u5f62\u306f\u30af\u30e9\u30c3\u30b7\u30e5\u3092\u56de\u907f\u3059\u308b\u30b3\u30fc\u30c9\u3092\u5f37\u8abf\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u9752\u3044\u77e9\u5f62\u306f\u30d0\u30a4\u30d1\u30b9\u30c1\u30a7\u30c3\u30af\u3092\u5f37\u8abf\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"790\" height=\"576\" \/><figcaption id=\"caption-attachment-109689\" class=\"wp-caption-text\">\u56f37 IcaChannelInputInternal\u306e\u7d4c\u8def\u3092\u518d\u4f7f\u7528<\/figcaption><\/figure>\n<h2><strong>RDPDR Client Name Request PDU\u3067\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f7f\u7528\u3057\u3066EIP\u306e\u5236\u5fa1\u3092\u596a\u53d6<\/strong><\/h2>\n<p>\u3053\u3053\u304b\u3089\u306f\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f7f\u7528\u3057\u3001EIP\u306e\u5236\u5fa1\u3092\u596a\u3046\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u56f35\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u306e\u30b5\u30a4\u30ba\u306f0xc8\uff080xd0\u304b\u30898\u30d0\u30a4\u30c8\u306e\u30d7\u30fc\u30eb\u30d8\u30c3\u30c0\u3092\u5f15\u3044\u305f\u5024\uff09\u3067\u3059\u3002\u3053\u3061\u3089\u306e<a href=\"https:\/\/unit42.paloaltonetworks.jp\/exploitation-of-windows-cve-2019-0708-bluekeep-three-ways-to-write-data-into-the-kernel-with-rdp-pdu\/\">\u30d6\u30ed\u30b0<\/a>\u306e\u56f319\u3067\u793a\u3057\u305f\u3068\u304a\u308a\u3001<span style=\"font-family: 'courier new', courier, monospace;\">termdd!IcaChannelInputInternal<\/span>\u95a2\u6570\u306f\u3001\u30b5\u30a4\u30ba\u304cchannel_data_size+0x20\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u3092\u5272\u308a\u5f53\u3066\u307e\u3059\u3002\u3064\u307e\u308a\u95a2\u6570<span style=\"font-family: 'courier new', courier, monospace;\">termdd!IcaChannelInputInternal<\/span>\u306b\u30b5\u30a4\u30ba\u304c0xc8\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u3092\u5272\u308a\u5f53\u3066\u305f\u3051\u308c\u3070\u3001Client Name Request PDU\u306e\u30b5\u30a4\u30ba\u306f0xa8\uff080xc8\u304b\u30890x20\u3092\u5f15\u3044\u305f\u3082\u306e\uff09\u306b\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u7d50\u679c\u7684\u306bComputerNameLen\u30d5\u30a3\u30fc\u30eb\u30c9\u306f0x98\u306b\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u30d7\u30fc\u30eb\u5272\u308a\u5f53\u3066\u306e\u6210\u529f\u5f8c\u3001\u30e1\u30e2\u30ea\u30b3\u30d4\u30fc\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u884c\u308f\u308c\u308b\u3053\u3068\u3092\u8003\u616e\u3057\u3066\u3001\u3053\u308c\u3089\u306eClient Name Request PDU\u3092\u8907\u6570\u56de\u9001\u4fe1\u3057\u3066\u3001\u89e3\u653e\u6e08\u307fMS_T120\u306e\u30d7\u30fc\u30eb\u30b9\u30ed\u30c3\u30c8\u304cClient Name Request PDU\u306e\u30c7\u30fc\u30bf\u3067\u5360\u6709\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u306a\u304a\u30b5\u30a4\u30ba0xc8\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306e\u6700\u521d\u306e0x20\u30d0\u30a4\u30c8\u306ftermdd\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u5185\u90e8\u7528\u3067\u3059\u304b\u3089\u6700\u521d\u306e0x20\u30d0\u30a4\u30c8\u306f\u5236\u5fa1\u3067\u304d\u307e\u305b\u3093\u3002\u3064\u3065\u304f0x10\u30d0\u30a4\u30c8\u3082Client Name Request PDU\u306e\u30d8\u30c3\u30c0\u7528\u306a\u306e\u3067\u5236\u5fa1\u3067\u304d\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u5236\u5fa1\u53ef\u80fd\u306a\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u306f\u5408\u8a080x98\uff080xc8\u304b\u30890x20\u30680x10\u3092\u5f15\u3044\u305f\u3082\u306e\uff09\u3068\u306a\u308a\u307e\u3059\u3002\u56f38\u306fRDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304cRDPDR Client Name Request PDU\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109691\" aria-describedby=\"caption-attachment-109691\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109692 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-7.png\" alt=\"\u3053\u308c\u306fRDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304cRDPDR Client Name Request PDU\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"900\" height=\"162\" \/><figcaption id=\"caption-attachment-109691\" class=\"wp-caption-text\">\u56f38 RDPDR Client Name Request\u3067\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f7f\u7528<\/figcaption><\/figure>\n<p>\u56f39\u306f\u3001RDPDR Client Name Request PDU\u3092\u9001\u4fe1\u3057\u3066\u4f5c\u6210\u3057\u305f\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30e2\u30ea\u30c0\u30f3\u30d7\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u91cd\u8981\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u3044\u304f\u3064\u304b\u3044\u308d\u3093\u306a\u8272\u3067\u30e9\u30d9\u30eb\u4ed8\u3051\u3057\u3066\u3042\u308a\u307e\u3059\u3002\u7dd1\u3067\u793a\u30594\u30d0\u30a4\u30c8\uff08DWORD\uff09\u5024<span style=\"font-family: 'courier new', courier, monospace;\">0x00000000<\/span>\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">ExEnterCriticalRegionAndAcquireResourceExclusive<\/span>\u304b\u3089\u547c\u3073\u51fa\u3059<span style=\"font-family: 'courier new', courier, monospace;\">hal!KeAcquireInStackQueuedSpinLockRaiseToSynch<\/span>\u5185\u3067\u30b5\u30fc\u30d3\u30b9\u304c\u30af\u30e9\u30c3\u30b7\u30e5\u3059\u308b\u306e\u3092\u9632\u3050\u305f\u3081\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6c34\u8272\u3067\u793a\u3059DWORD\u5024<span style=\"font-family: 'courier new', courier, monospace;\">0x00000000<\/span>\u306f\u3001\u72b6\u614b\u30c1\u30a7\u30c3\u30af\u3092\u30d0\u30a4\u30d1\u30b9\u3059\u308b\u3053\u3068\u3067\u3001\u5236\u5fa1\u4e0b\u306b\u304a\u3044\u305f\u95a2\u6570\u30dd\u30a4\u30f3\u30bfeax\u306b\u3088\u308b\u95a2\u6570\u547c\u3073\u51fa\u3057\uff08<span style=\"font-family: 'courier new', courier, monospace;\">call [eax]<\/span>\uff09\u307e\u3067\u3001\u95a2\u6570\u5b9f\u884c\u7d4c\u8def\u3092\u78ba\u5b9f\u306b\u751f\u304b\u3057\u3066\u304a\u304f\u305f\u3081\u306e\u3082\u306e\u3067\u3059\uff08\u56f37\u53c2\u7167\uff09\u3002<\/p>\n<figure id=\"attachment_109693\" aria-describedby=\"caption-attachment-109693\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109694 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-8.png\" alt=\"\u3053\u308c\u306f\u3001RDPDR Client Name Request PDU\u3092\u9001\u4fe1\u3057\u3066\u4f5c\u6210\u3057\u305f\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30e2\u30ea\u30c0\u30f3\u30d7\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u3055\u307e\u3056\u307e\u306a\u8272\u3067\u30e9\u30d9\u30ea\u30f3\u30b0\u3057\u3066\u3042\u308a\u307e\u3059\u3002\" width=\"900\" height=\"530\" \/><figcaption id=\"caption-attachment-109693\" class=\"wp-caption-text\">\u56f39 \u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/figcaption><\/figure>\n<p>\u7d2b\u3067\u793a\u3057\u305fDWORD\u5024<span style=\"font-family: 'courier new', courier, monospace;\">0x86c10030<\/span>\u306f\u3001\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30aa\u30d5\u30bb\u30c3\u30c80x8c\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\uff08\u56f39\u53c2\u7167\uff09\u3002\u56f310\u306e\u30c7\u30d0\u30c3\u30b0\u30ed\u30b0\u306f\u3001\u30aa\u30d5\u30bb\u30c3\u30c80x8c\u3067\u507d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3057\u3066\u95a2\u6570\u547c\u3073\u51fa\u3057\uff08<span style=\"font-family: 'courier new', courier, monospace;\">call [eax]<\/span>\uff09\u3092\u884c\u3044\u3001EIP\u306e\u5236\u5fa1\u3092\u596a\u3046\u65b9\u6cd5\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p><figure id=\"attachment_109695\" aria-describedby=\"caption-attachment-109695\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109696 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-9.png\" alt=\"\u3053\u306e\u30c7\u30d0\u30c3\u30b0\u30ed\u30b0\u306f\u3001\u30aa\u30d5\u30bb\u30c3\u30c80x8c\u3067\u507d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3057\u3066\u95a2\u6570\u547c\u3073\u51fa\u3057\uff08call [eax]\uff09\u3092\u884c\u3044\u3001EIP\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\" width=\"900\" height=\"544\" \/><figcaption id=\"caption-attachment-109695\" class=\"wp-caption-text\">\u56f310 IcaChannelInputInternal\u5185\u3067\u5236\u5fa1\u4e0b\u306b\u304a\u3044\u305f\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3057\u3066\u95a2\u6570\u547c\u3073\u51fa\u3057\u3092\u884c\u3063\u305f\u3068\u3053\u308d<\/figcaption><\/figure>EIP\u3092\u3069\u306e\u3088\u3046\u306b\u5236\u5fa1\u3059\u308b\u304b\u306b\u3064\u3044\u3066\u3053\u3053\u307e\u3067\u3067\u793a\u305b\u305f\u306e\u3067\u3001\u6b21\u306feax\u304c\u30a2\u30c9\u30ec\u30b9<span style=\"font-family: 'courier new', courier, monospace;\">0x86c10030<\/span>\u306b\u8a2d\u5b9a\u3055\u308c\u3001EIP\u304c\u30a2\u30c9\u30ec\u30b9<span style=\"font-family: 'courier new', courier, monospace;\">0x86c1002c<\/span>\u306b\u8a2d\u5b9a\u3055\u308c\u308b\u7406\u7531\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u3053\u308c\u307e\u3067\u306b\u8aac\u660e\u3057\u305f\u624b\u6cd5\u3092\u4f7f\u3048\u3070\u3001\u30a2\u30c9\u30ec\u30b9<span style=\"font-family: 'courier new', courier, monospace;\">0x86xxxxxx<\/span>\u304b\u3089<span style=\"font-family: 'courier new', courier, monospace;\">0x8axxxxxx<\/span>\u307e\u3067\u306e\u9593\u3001\u5b89\u5b9a\u3057\u305f\u30b9\u30d7\u30ec\u30fc\u7d50\u679c\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u56f311\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u6574\u5217\u3055\u308c\u305f\u54040x1000\u30a2\u30c9\u30ec\u30b9\u306e\u30aa\u30d5\u30bb\u30c3\u30c80x002c\u306b\u306f\u30018\u30d0\u30a4\u30c8\u5206\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u53ef\u80fd\u306a\u30c7\u30fc\u30bf\u304c\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109697\" aria-describedby=\"caption-attachment-109697\" style=\"width: 515px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109698 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-10.png\" alt=\"\u6574\u5217\u3055\u308c\u305f\u54040x1000\u30a2\u30c9\u30ec\u30b9\u306e\u30aa\u30d5\u30bb\u30c3\u30c80x002c\u306b\u306f8\u30d0\u30a4\u30c8\u5206\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u53ef\u80fd\u306a\u30c7\u30fc\u30bf\u304c\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002\u8d64\u3044\u77e9\u5f62\u306f\u91cd\u8981\u8981\u7d20\u3092\u5f37\u8abf\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"515\" height=\"344\" \/><figcaption id=\"caption-attachment-109697\" class=\"wp-caption-text\">\u56f311 Refresh Rect PDU\u3092\u4f7f\u3063\u3066\u5b89\u5b9a\u3057\u305f\u30d7\u30fc\u30eb \u30b9\u30d7\u30ec\u30fc\u3092\u884c\u3048\u308b<\/figcaption><\/figure>\n<p>\u56f312\u306e\u30b3\u30fc\u30c9\u30b9\u30cb\u30da\u30c3\u30c8\u306f\u3001RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304cRefresh Rect PDU\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3068\u3001\u4f5c\u6210\u3057\u305fRefresh Rect PDU\u3092\u4f55\u56deRDP\u30b5\u30fc\u30d0\u30fc\u9001\u4fe1\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109699\" aria-describedby=\"caption-attachment-109699\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109700 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-11.png\" alt=\"\u3053\u306e\u30b3\u30fc\u30c9\u30b9\u30cb\u30da\u30c3\u30c8\u306f\u3001RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304cRefresh Rect PDU\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3068\u3001\u4f5c\u6210\u3057\u305fRefresh Rect PDU\u3092\u4f55\u56deRDP\u30b5\u30fc\u30d0\u30fc\u9001\u4fe1\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u8d64\u3044\u77e9\u5f62\u306f\u91cd\u8981\u8981\u7d20\u3092\u5f37\u8abf\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"900\" height=\"189\" \/><figcaption id=\"caption-attachment-109699\" class=\"wp-caption-text\">\u56f312 RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067\u30b9\u30d7\u30ec\u30fc\u7528\u306eRefresh Rect PDU\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5<\/figcaption><\/figure>\n<p>\u6574\u5217\u3055\u308c\u305f\u30b5\u30a4\u30ba0x1000\u306e\u5404\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306b\u3042\u308b8\u30d0\u30a4\u30c8\u5206\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u53ef\u80fd\u30c7\u30fc\u30bf\u3067\u306f\u3001\u30aa\u30d5\u30bb\u30c3\u30c80x0030\uff08<span style=\"font-family: 'courier new', courier, monospace;\">0x86c10030<\/span>\uff09\u306e4\u30d0\u30a4\u30c8\u3092<span style=\"font-family: 'courier new', courier, monospace;\">0x86c1002c<\/span>\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u30b9\u30c6\u30fc\u30b80\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u7528\u306b\u30cf\u30fc\u30c9\u30b3\u30fc\u30c9\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u3067\u3059\u3002\u30aa\u30d5\u30bb\u30c3\u30c80x002c\u306e\u6b8b\u308a4\u30d0\u30a4\u30c8\uff08<span style=\"font-family: 'courier new', courier, monospace;\">0x86c1002c<\/span>\uff09\u306f\u3001\u30b9\u30c6\u30fc\u30b80\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u683c\u7d0d\u306b\u4f7f\u3044\u307e\u3059\u3002\u3053\u308c\u4ee5\u964d\u306f\u3001\u3053\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u5404\u30b9\u30c6\u30fc\u30b8\u306b\u3064\u3044\u3066\u3044\u304f\u3064\u304b\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2><strong>\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/strong><\/h2>\n<p>\u30b9\u30c6\u30fc\u30b80\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306b\u4f7f\u7528\u3067\u304d\u308b\u306e\u306f4\u30d0\u30a4\u30c8\u5206\u3057\u304b\u306a\u3044\u306e\u3067\u3001\u3053\u3053\u3067\u306f4\u30d0\u30a4\u30c8\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30b9\u30ea\u30c3\u30d1\u306e\u30c8\u30ea\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066<span style=\"font-family: 'courier new', courier, monospace;\">add bl,al; jmp ebx<\/span>\u306e\u304b\u308f\u308a\u306b<span style=\"font-family: 'courier new', courier, monospace;\">call\/jmp ebx+30h<\/span>\u3092\u4f7f\u3063\u3066\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u30b9\u30c6\u30fc\u30b81\u306b\u30b8\u30e3\u30f3\u30d7\u3055\u305b\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\">termdd!IcaChannelInputInternal<\/span> \u304c\u30a2\u30bb\u30f3\u30d6\u30ea\u547d\u4ee4<span style=\"font-family: 'courier new', courier, monospace;\">call dword ptr [eax]<\/span>\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001al\u306f0x30\u3068\u306a\u308a\u3001ebx\u306f\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u3057\u307e\u3059\u3002RDP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u3053\u306e\u507d\u306eMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5185\u3092\u5236\u5fa1\u4e0b\u306b\u304a\u3044\u305f\u30c7\u30fc\u30bf\u3067\u57cb\u3081\u5c3d\u304f\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b9\u30c6\u30fc\u30b81\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u3001\u30a2\u30c9\u30ec\u30b9faked_MS_T120_channel_object+0x30\uff08<span style=\"font-family: 'courier new', courier, monospace;\">0x867b3590<\/span>\uff09\u304b\u3089\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u5168\u4f53\u3092\u56f313\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109701\" aria-describedby=\"caption-attachment-109701\" style=\"width: 896px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109702 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-12.png\" alt=\"\u3053\u308c\u306f\u3001\u30c8\u30ea\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u30b9\u30c6\u30fc\u30b80\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304b\u3089\u30b9\u30c6\u30fc\u30b81\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306b\u30b8\u30e3\u30f3\u30d7\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u6587\u3067\u8aac\u660e\u3059\u308b\u4e3b\u8981\u9805\u76ee\u304c\u8d64\u3044\u77e9\u5f62\u3067\u5f37\u8abf\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \" width=\"896\" height=\"668\" \/><figcaption id=\"caption-attachment-109701\" class=\"wp-caption-text\">\u56f313 \u30b9\u30c6\u30fc\u30b80\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<p>\u8a00\u53ca\u3057\u3066\u304a\u304f\u4fa1\u5024\u304c\u3042\u308b\u306e\u306f\u30012\u30d0\u30a4\u30c8\u306e\u30a2\u30bb\u30f3\u30d6\u30ea\u30b3\u30fc\u30c9<span style=\"font-family: 'courier new', courier, monospace;\">add bl, al<\/span>\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u3053\u308c\u306f<span style=\"font-family: 'courier new', courier, monospace;\">jmp ebx+0x30<\/span>\u306e\u5b9f\u88c5\u306b\u4f7f\u3048\u308b\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304c4\u30d0\u30a4\u30c8\u3057\u304b\u306a\u3044\u3053\u3068\u304b\u3089\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002bl\u304c0xd0\u3088\u308a\u5927\u304d\u3051\u308c\u3070\u3001<span style=\"font-family: 'courier new', courier, monospace;\">add bl, al<\/span>\u3067\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u304c\u767a\u751f\u3057\u3001<span style=\"font-family: 'courier new', courier, monospace;\">jmp ebx<\/span>\u304c\u9593\u9055\u3063\u305f\u30a2\u30c9\u30ec\u30b9\u306b\u30b8\u30e3\u30f3\u30d7\u3057\u3066\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306f\u5931\u6557\u3057\u3066\u3057\u307e\u3046\u306e\u3067\u3001\u5b8c\u74a7\u306a\u65b9\u6cd5\u3068\u306f\u3044\u3048\u307e\u305b\u3093\u304c\u3001\u6210\u529f\u7387\u306f\u7406\u8ad6\u7684\u306b\u306f81.25\uff05\uff080xd \/ 0x10\uff09\u3067\u3059\u304b\u3089\u3001\u3053\u308c\u306f\u3053\u308c\u3067\u5341\u5206\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u30b9\u30c6\u30fc\u30b81\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u8aac\u660e\u3059\u308b\u524d\u306b\u3001\u30b9\u30c6\u30fc\u30b82\u306e\u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u79c1\u305f\u3061\u306f\u3001RDPDR Client Name Request PDU\u3092\u4f7f\u7528\u3059\u308c\u3070\u3001\u4efb\u610f\u306e\u30b5\u30a4\u30ba\u306e\u6700\u7d42\u30ab\u30fc\u30cd\u30eb\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092RDP\u30b5\u30fc\u30d0\u30fc\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306b\u9001\u4fe1\u3067\u304d\u308b\u3053\u3068\u306b\u6c17\u4ed8\u304d\u307e\u3057\u305f\u3002\u4f8b\u3068\u3057\u3066\u3001\u30c7\u30fc\u30bf\u9577\u304c0x5c8\u3067\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u57cb\u3081\u8fbc\u3093\u3060RDPDR Client Name Request PDU\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\uff08\u56f314\u53c2\u7167\uff09\u3002<\/p>\n<figure id=\"attachment_109703\" aria-describedby=\"caption-attachment-109703\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109704 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-13.png\" alt=\"\u4f8b\u3068\u3057\u3066\u3001\u30c7\u30fc\u30bf\u9577\u304c0x5c8\u3067\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u57cb\u3081\u8fbc\u3093\u3060RDPDR Client Name Request PDU\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002 \" width=\"900\" height=\"377\" \/><figcaption id=\"caption-attachment-109703\" class=\"wp-caption-text\">\u56f314 RDPDR Client Name Request PDU\u304c\u9001\u4fe1\u3059\u308b\u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<p>RDP\u30b5\u30fc\u30d0\u30fc\u306b\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304c\u57cb\u3081\u8fbc\u307e\u308c\u305fRDPDR Client Name Request PDU\u304c\u9001\u4fe1\u3055\u308c\u308b\u3068\u3001PDMCS - Hydra MCS Protocol Driver\u306f\u3001\u30c7\u30fc\u30bf\u3092\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306b\u683c\u7d0d\u3057\u307e\u3059\u3002\u8208\u5473\u6df1\u3044\u3053\u3068\u306b\u3001\u305d\u306e\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306b\u306f\u30b9\u30bf\u30c3\u30af\u4e0a\u3067\u7dad\u6301\u3055\u308c\u3066\u3044\u308b\u53c2\u7167\u304c\u3042\u308a\u3001\u3053\u308c\u3092\u30b9\u30c6\u30fc\u30b81\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3059\u308b\u3068\u3001\u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u3053\u3053\u3067\u306eECX\u30ec\u30b8\u30b9\u30bf\u306f\u30b9\u30bf\u30c3\u30af\u3092\u6307\u3057\u3066\u3044\u3066\u3001\u30a2\u30c9\u30ec\u30b9ECX+0x28\u306f\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u683c\u7d0d\u3057\u3066\u3044\u307e\u3059\u3002\u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306e\u30aa\u30d5\u30bb\u30c3\u30c80x434\u306b\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\uff08\u56f315\u53c2\u7167\uff09\u3002<\/p>\n<figure id=\"attachment_109705\" aria-describedby=\"caption-attachment-109705\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109706 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-14.png\" alt=\"\u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u306e\u30aa\u30d5\u30bb\u30c3\u30c80x434\u306b\u5b58\u5728\u3057\u307e\u3059\u3002 \" width=\"900\" height=\"316\" \/><figcaption id=\"caption-attachment-109705\" class=\"wp-caption-text\">\u56f315 \u30b9\u30c6\u30fc\u30b81\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<p>\u3053\u306e\u30aa\u30d5\u30bb\u30c3\u30c80x434\u306fWindows\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u5185\u3067\u691c\u7d22\u3057\u3066\u666e\u904d\u7684\u306a\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u30b9\u30c6\u30fc\u30b8\uff11\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u30a8\u30c3\u30b0\u30cf\u30f3\u30bf\u30fc\u3068\u3057\u3066\u4f5c\u3063\u3066\u304a\u304f\u3053\u3068\u306f\u5bb9\u6613\u3067\u3059\u3002<\/p>\n<h2><strong>\u30af\u30e9\u30c3\u30b7\u30e5\u56de\u907f\u306e\u305f\u3081\u306b\u30ab\u30fc\u30cd\u30eb\u306b\u30d1\u30c3\u30c1\u3092\u5f53\u3066\u308b<\/strong><\/h2>\n<p>\u3064\u3065\u304f\u4f5c\u696d\u306f\u3001\u30ab\u30fc\u30cd\u30eb\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3067\u306f\u30eb\u30fc\u30c1\u30f3\u5316\u3057\u3066\u3044\u308b\u3082\u306e\u3067\u3059\u3002\u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u3001\u6700\u521d\u306b\u623b\u308a\u5024\u3092\u4fee\u6b63\u3057\u3001\u30ab\u30fc\u30cd\u30eb\u306b\u30d1\u30c3\u30c1\u3092\u3042\u3066\u3066\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u7d42\u4e86\u5f8c\u306e\u30af\u30e9\u30c3\u30b7\u30e5\u3092\u56de\u907f\u3057\u307e\u3059\u3002\u305d\u308c\u304b\u3089\u30ab\u30fc\u30cd\u30eb\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066APC\u3092lsass.exe\u307e\u305f\u306fspoolsv.exe\u306b\u633f\u5165\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u30e2\u30fc\u30c9\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u56f316\u306f\u3001\u6700\u7d42\u7684\u306a\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304cChannelPointerTable\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4fee\u6b63\u3057\u3001\u30ea\u30bf\u30fc\u30f3\u30a2\u30c9\u30ec\u30b9\u3092\u5909\u66f4\u3057\u3001<span style=\"font-family: 'courier new', courier, monospace;\">ExReleaseResourceAndLeaveCriticalRegion<\/span>\u95a2\u6570\u306e\u5b9f\u884c\u3092\u30a8\u30df\u30e5\u30ec\u30fc\u30c8\u3057\u3066KTHREAD\u306eWORD\u5024\u3092\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3059\u308b\u69d8\u5b50\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109707\" aria-describedby=\"caption-attachment-109707\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109708 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/c-users-ga1ois-appdata-local-microsoft-windows-in.png\" alt=\"\u3053\u308c\u306f\u3001\u6700\u7d42\u7684\u306a\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304cChannelPointerTable\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4fee\u6b63\u3057\u3001\u30ea\u30bf\u30fc\u30f3\u30a2\u30c9\u30ec\u30b9\u3092\u5909\u66f4\u3057\u3001ExReleaseResourceAndLeaveCriticalRegion\u95a2\u6570\u306e\u5b9f\u884c\u3092\u30a8\u30df\u30e5\u30ec\u30fc\u30c8\u3057\u3066KTHREAD\u306eWORD\u5024\u3092\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3059\u308b\u69d8\u5b50\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\" width=\"900\" height=\"200\" \/><figcaption id=\"caption-attachment-109707\" class=\"wp-caption-text\">\u56f316 \u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304c\u30ab\u30fc\u30cd\u30eb\u306b\u30d1\u30c3\u30c1\u3092\u9069\u7528<\/figcaption><\/figure>\n<p>\u30ab\u30fc\u30cd\u30eb\u3078\u306e\u30d1\u30c3\u30c1\u9069\u7528\u5f8c\u306b\u30ab\u30fc\u30cd\u30eb\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u6a5f\u80fd\u90e8\u5206\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u8aac\u660e\u306b\u3042\u305f\u308a\u3001\u79c1\u305f\u3061\u306fSleepya\u304cEternalBlue\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u7528\u306b\u516c\u958b\u3057\u305f\u30ab\u30fc\u30cd\u30eb<a href=\"https:\/\/gist.github.com\/worawit\/05105fce9e126ac9c85325f0b05d6501\">\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/a>\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u5229\u7528\u3057\u307e\u3057\u305f\u3002\u30c7\u30e2\u7528\u306eWinExec('calc') \u306e\u30e6\u30fc\u30b6\u30fc\u30e9\u30f3\u30c9\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u56f317\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_109709\" aria-describedby=\"caption-attachment-109709\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-109710 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2020\/12\/word-image-15.png\" alt=\"\u30c7\u30e2\u7528\u306eWinExec(\u2018calc\u2019) \u306e\u30e6\u30fc\u30b6\u30fc\u30e9\u30f3\u30c9\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002 \" width=\"900\" height=\"413\" \/><figcaption id=\"caption-attachment-109709\" class=\"wp-caption-text\">\u56f317 \u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u30e2\u30fc\u30c9\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<h2><strong>\u4ee5\u4e0a\u306e\u307e\u3068\u3081<\/strong><\/h2>\n<p>\u4ee5\u4e0a\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u304a\u3051\u308b\u8ab2\u984c\u3092\u3059\u3079\u3066\u304a\u3055\u3048\u305f\u3068\u3053\u308d\u3067\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u30c1\u30a7\u30fc\u30f3\u5168\u4f53\u306b\u3064\u3044\u3066\u306f\u6b21\u306e\u3088\u3046\u306b\u307e\u3068\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u4fb5\u5bb3\u5bfe\u8c61\u7aef\u672b\u3068\u306e\u63a5\u7d9a\u3092\u78ba\u7acb<\/li>\n<li>Refresh Rect PDU\u3067\u30b9\u30d7\u30ec\u30fc<\/li>\n<li>\u7d30\u5de5\u6e08\u307fPDU\u3092\u9001\u4fe1\u3001MS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5f37\u5236\u89e3\u653e<\/li>\n<li>\u8907\u6570\u306eRDPDR Client Name Request PDU\u3067\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5360\u6709<\/li>\n<li>RDPDR Client Name Request PDU\u3067\u6700\u7d42\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u9001\u4fe1<\/li>\n<li>\u89e3\u653e\u6e08\u307fMS_T120\u30c1\u30e3\u30cd\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f7f\u7528\u3059\u308b\u305f\u3081\u63a5\u7d9a\u3092\u7d42\u4e86\u3001EIP\u306e\u5236\u5fa1\u596a\u53d6\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u6570\u30b9\u30c6\u30fc\u30b8\u5206\u5b9f\u884c<\/li>\n<\/ol>\n<h2><strong>\u7d50\u8ad6<\/strong><\/h2>\n<p>\u672c\u7a3f\u3067\u306fWindows RDP\u306e\u8106\u5f31\u6027CVE-2019-0708 (BlueKeep) \u306b\u3064\u3044\u3066\u3001Refresh Rect PDU \u3068 RDPDR Client Name Request PDU \u3092\u4f7f\u3044\u3001\u30b7\u30b9\u30c6\u30e0\u7279\u6a29\u3067\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u3092\u884c\u3048\u308b\u3088\u3046\u306b\u3059\u308b\u65b9\u6cd5\u3092\u6982\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u672c\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30b9\u30c6\u30fc\u30b80\u306e4\u30d0\u30a4\u30c8\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30b9\u30e9\u30a4\u30c0\u3068\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30b9\u30c6\u30fc\u30b81\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30a8\u30c3\u30b0\u30cf\u30f3\u30bf\u30fc\u306f\u3001\u4e00\u822c\u7684\u306a\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u624b\u6cd5\u306a\u306e\u3067\u3001\u3069\u3093\u306aWindows RDP\u306e\u8106\u5f31\u6027\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u3067\u3082\u5229\u7528\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002RDP PDU\u3068Windows RDP\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7528\u3044\u308b\u30ab\u30fc\u30cd\u30eb\u30d7\u30fc\u30eb\u98a8\u6c34\uff08\u30d2\u30fc\u30d7\u98a8\u6c34\uff09\u30c6\u30af\u30cb\u30c3\u30af\u306b\u95a2\u3059\u308b\u6df1\u3044\u7814\u7a76\u306f\u3001\u9632\u5fa1\u5074\u304cWindows RDP\u653b\u6483\u304b\u3089\u3059\u3079\u3066\u306eWindows\u30e6\u30fc\u30b6\u3092\u4fdd\u8b77\u3059\u308b\u4e0a\u3067\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u88fd\u54c1\u3092\u3054\u5229\u7528\u4e2d\u306e\u304a\u5ba2\u69d8\u306fBlueKeep\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\">Cortex XDR<\/a> \u306f\u3001Windows XP\u3001Windows 7\u3001Windows Server 2003\u3001Windows Server 2008\u4e0a\u3067\u3053\u306e\u8106\u5f31\u6027\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u9632\u6b62\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>\u3067<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/secure-the-network\/subscriptions\/threat-prevention\">\u8105\u5a01\u9632\u5fa1<\/a>\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u304a\u5ba2\u69d8\u306f\u672c\u8106\u5f31\u6027\u3092\u691c\u51fa\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 2019\u5e745\u6708\u3001Microsoft\u306f\u5b9a\u4f8b\u5916\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u516c\u958b\u3057\u307e\u3057\u305f\u3002 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