{"id":127529,"date":"2023-03-31T01:43:29","date_gmt":"2023-03-31T08:43:29","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=127529"},"modified":"2024-07-30T19:16:32","modified_gmt":"2024-07-31T02:16:32","slug":"threat-brief-cve-2023-23397","status":"publish","type":"post","link":"https:\/\/origin-unit42.paloaltonetworks.com\/ja\/threat-brief-cve-2023-23397\/","title":{"rendered":"\u8105\u5a01\u306b\u95a2\u3059\u308b\u60c5\u5831: Microsoft Outlook\u306b\u304a\u3051\u308b\u7279\u6a29\u6607\u683c\u306e\u8106\u5f31\u6027(CVE-2023-23397)"},"content":{"rendered":"<h2><a id=\"post-127529-_4lt92rr5muov\"><\/a>\u6982\u8981<\/h2>\n<p>2023\u5e743\u670814\u65e5\u3001Microsoft\u306f<a href=\"https:\/\/cve.mitre.org\/cgi-bin\/cvename.cgi?name=CVE-2023-23397\" target=\"_blank\" rel=\"noopener\">CVE-2023-23397<\/a>\u3092\u4fee\u6b63\u3059\u308b\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u516c\u958b\u3057\u307e\u3057\u305f\u3002CVE-2023-23397\u306fWindows Microsoft Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u304a\u3051\u308b\u8106\u5f31\u6027\u3067\u3059\u3002Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u306f\u3001\u7279\u5225\u306a\u7d30\u5de5\u3092\u3057\u305f\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3057\u305f\u5834\u5408\u306b\u3001\u305d\u306e\u30e1\u30fc\u30eb\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u81ea\u52d5\u7684\u306b\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u308b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\u3053\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u30c8\u30ea\u30ac\u30fc\u306b\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u308b\u64cd\u4f5c\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u8106\u5f31\u6027\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u3088\u308a\u3001\u6a19\u7684\u30e6\u30fc\u30b6\u30fc\u306eNet-NTLMv2\u30cf\u30c3\u30b7\u30e5\u304c\u6f0f\u3048\u3044\u3057\u307e\u3059\u3002\u3053\u308c\u3092\u5229\u7528\u3057\u3066NTLMv2\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3079\u3064\u306e\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u30ea\u30ec\u30fc\u653b\u6483\u3092\u884c\u3046\u3053\u3068\u306b\u3088\u308a\u3001\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u306f\u81ea\u8eab\u3092\u6a19\u7684\u306e\u30e6\u30fc\u30b6\u30fc\u3068\u3057\u3066\u8a8d\u8a3c\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u304c\u3059\u3067\u306b\u6a19\u7684\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u8db3\u5834\u3092\u7bc9\u3044\u3066\u3044\u308b\u5834\u5408\u3001\u30ea\u30ec\u30fc\u653b\u6483\u306f\u3088\u308a\u9ad8\u3044\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\u3002Windows\u306eNTLM\u8a8d\u8a3c(New Technology LAN Manager authentication)\u306fActive Directory(AD)\u74b0\u5883\u5185\u3067\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u516c\u958b\u3055\u308c\u305f\u30b5\u30fc\u30d3\u30b9\u306b\u306f\u4f7f\u308f\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u6f0f\u3048\u3044\u3057\u305f\u30cf\u30c3\u30b7\u30e5\u3067\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u30ea\u30ec\u30fc\u653b\u6483\u3092\u53d7\u3051\u308b\u3053\u3068\u306f\u3001\u3082\u3063\u3068\u5c11\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u30ea\u30e2\u30fc\u30c8\u653b\u6483\u306f\u3001\u6f0f\u3048\u3044\u3057\u305fNet-NTLMv2\u30cf\u30c3\u30b7\u30e5\u306b\u5185\u5728\u3059\u308b\u8106\u5f31\u306a\u30af\u30ec\u30c7\u30f3\u30b7\u30e3\u30eb(\u8a8d\u8a3c\u60c5\u5831)\u3092\u30af\u30e9\u30c3\u30af\u3057\u3001\u30af\u30e9\u30c3\u30af\u3057\u305f\u5e73\u6587\u306e\u30af\u30ec\u30c7\u30f3\u30b7\u30e3\u30eb\u3092\u4f7f\u3063\u3066\u3001\u6a19\u7684\u30e6\u30fc\u30b6\u30fc\u304c\u30a2\u30af\u30bb\u30b9\u3092\u3082\u3064\u5916\u90e8\u516c\u958b\u30b5\u30fc\u30d3\u30b9\u306b\u624b\u52d5\u3067\u30ed\u30b0\u30a4\u30f3\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8106\u5f31\u6027\u306fWindows\u7248\u306e\u3059\u3079\u3066\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306eOutlook\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002Outlook for Android\u3001iOS\u3001macOS\u3001Windows\u306e\u30e6\u30fc\u30b6\u30fc\u3067\u3001Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u4f7f\u308f\u305aWeb\u7248Outlook (\u65e7\u79f0Outlook Web Application)\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093\u3002<\/p>\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<td style=\"width: 35%;\"><b>\u95a2\u9023\u3059\u308bUnit 42\u306e\u30c8\u30d4\u30c3\u30af<\/b><\/td>\n<td style=\"width: 100%;\"><a href=\"https:\/\/unit42.paloaltonetworks.jp\/tag\/CVE-2023-23397-ja\/\"><b>CVE-2023-23397<\/b><\/a><b>, <a href=\"https:\/\/unit42.paloaltonetworks.jp\/category\/threat-briefs-assessments\/threat-brief-ja\/\">Threat Brief<\/a><\/b><\/td>\n<\/tr>\n<\/thead>\n<\/table>\n<h2><a id=\"post-127529-_wven14kmgum2\"><\/a>\u8106\u5f31\u6027\u306e\u8a73\u7d30<\/h2>\n<p><a href=\"https:\/\/cve.mitre.org\/cgi-bin\/cvename.cgi?name=CVE-2023-23397\" target=\"_blank\" rel=\"noopener\">CVE-2023-23397<\/a>\u306fMicrosoft Outlook\u306b\u304a\u3051\u308b\u8106\u5f31\u6027\u3067\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u306f\u3001\u30ab\u30b9\u30bf\u30e0\u306e<span style=\"font-family: 'courier new', courier, monospace;\">PidLidReminderFileParameter<\/span>\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u3082\u3064\u30e1\u30c3\u30bb\u30fc\u30b8(<span style=\"font-family: 'courier new', courier, monospace;\">.msg<\/span>)\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3001\u3053\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306bUniversal Naming Convention (UNC)\u30d1\u30b9\u3092\u542b\u307e\u305b\u3001\u305d\u306e\u30d1\u30b9\u3092\u653b\u6483\u8005\u914d\u4e0b\u306b\u3042\u308bServer Message Block (SMB)\u30b5\u30fc\u30d0\u30fc\u306b\u5411\u3051\u308b\u3053\u3068\u3067\u60aa\u7528\u3067\u304d\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\">PidLidReminderFileParameter<\/span>\u306f\u3001\u30df\u30fc\u30c6\u30a3\u30f3\u30b0\u901a\u77e5\u306a\u3069\u306e\u9805\u76ee\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u9001\u4fe1\u8005\u304c\u30ab\u30b9\u30bf\u30e0\u901a\u77e5\u97f3\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002<\/p>\n<p>\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u914d\u4e0b\u306eSMB\u30b5\u30fc\u30d0\u30fc\u306b\u63a5\u7d9a\u3059\u308b\u3053\u3068\u3067\u3001\u6a19\u7684\u30e6\u30fc\u30b6\u30fc\u306eNet-NTLMv2\u30cf\u30c3\u30b7\u30e5\u304c\u6f0f\u3048\u3044\u3057\u307e\u3059\u3002\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u306f\u3053\u306e\u30cf\u30c3\u30b7\u30e5\u3092\u5229\u7528\u3057\u3066NTLMv2\u8a8d\u8a3c\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3079\u3064\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3059\u308b\u8a8d\u8a3c\u3092\u884c\u3046<a href=\"https:\/\/infosecwriteups.com\/abusing-ntlm-relay-and-pass-the-hash-for-admin-d24d0f12bea0\" target=\"_blank\" rel=\"noopener\">\u30ea\u30ec\u30fc\u653b\u6483<\/a>\u3092\u3057\u304b\u3051\u305f\u308a\u3001\u30cf\u30c3\u30b7\u30e5\u3092\u89e3\u8aad\u3057\u3066\u5185\u5728\u3059\u308b\u5e73\u6587\u30af\u30ec\u30c7\u30f3\u30b7\u30e3\u30eb\u306e\u53d6\u5f97\u3092\u8a66\u307f\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u60aa\u610f\u306e\u3042\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3057\u305fOutlook\u306f\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3092\u518d\u751f\u3059\u308b\u975e\u540c\u671f\u30bf\u30b9\u30af\u3092<span style=\"font-family: 'courier new', courier, monospace;\">HrAsyncPlayReminderSound<\/span>\u7d4c\u7531\u3067\u8ffd\u52a0\u3057\u307e\u3059(\u56f31)\u3002\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u306e\u518d\u751f\u306b\u3042\u305f\u3063\u3066\u6700\u7d42\u7684\u306b<span style=\"font-family: 'courier new', courier, monospace;\">SearchPathW<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3001\u3053\u306e\u3055\u3044\u306b\u30a2\u30af\u30bf\u30fc\u304c\u6307\u5b9a\u3057\u305f\u30b5\u30a6\u30f3\u30c9 \u30ea\u30de\u30a4\u30f3\u30c0\u30fc \u30d5\u30a1\u30a4\u30eb\u3078\u306e\u30d1\u30b9\u304c\u6e21\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u3063\u3066SMB\u63a5\u7d9a\u304c\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_127518\" aria-describedby=\"caption-attachment-127518\" style=\"width: 686px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-127518 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2023\/03\/word-image-127513-1.png\" alt=\"\u3053\u306e\u56f3\u306f\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb \u30d5\u30ed\u30fc\u3092\u8868\u30592\u3064\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u30021\u3064\u3081\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u304b\u3089\u5de6\u3078\u4f38\u3073\u308b\u8d64\u3044\u77e2\u5370\u304c2\u3064\u76ee\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u6307\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3067Outlook\u306f\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3092\u518d\u751f\u3059\u308b\u305f\u3081\u3001\u30b5\u30a6\u30f3\u30c9 \u30d5\u30a1\u30a4\u30eb\u306b\u5bfe\u3059\u308b\u975e\u540c\u671f\u30bf\u30b9\u30af\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002 \" width=\"686\" height=\"790\" \/><figcaption id=\"caption-attachment-127518\" class=\"wp-caption-text\">\u56f31. Outlook\u304c\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3092\u518d\u751f\u3059\u308b\u305f\u3081\u30b5\u30a6\u30f3\u30c9 \u30d5\u30a1\u30a4\u30eb\u306b\u5bfe\u3059\u308b\u975e\u540c\u671f\u30bf\u30b9\u30af\u3092\u8ffd\u52a0\u3059\u308b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb \u30d5\u30ed\u30fc<\/figcaption><\/figure>\n<p>\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u9069\u7528\u6e08\u307f\u306e\u30b3\u30fc\u30c9\u306f\u3053\u306e\u30d5\u30a1\u30a4\u30eb \u30d1\u30b9\u306b\u5bfe\u3057\u3066<span style=\"font-family: 'courier new', courier, monospace;\">IsFileZoneLocalIntranetOrTrusted<\/span>\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002\u3053\u306e\u95a2\u6570\u306f\u3001\u5bfe\u8c61\u306e\u30d5\u30a1\u30a4\u30eb \u30d1\u30b9\u304c\u5f53\u8a72\u30c7\u30d0\u30a4\u30b9\u306e\u30ed\u30fc\u30ab\u30eb \u30a4\u30f3\u30c8\u30e9\u30cd\u30c3\u30c8\u306a\u3044\u3057\u4fe1\u983c\u3067\u304d\u308b\u30c9\u30e1\u30a4\u30f3\u306e\u4e00\u90e8\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u5916\u90e8\u304b\u3089\u306e\u63a5\u7d9a\u3092\u8a31\u53ef\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u653b\u6483\u8005\u304c\u3059\u3067\u306b\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u30a2\u30af\u30bb\u30b9\u6e08\u307f\u306e\u5834\u5408\u3001\u5185\u90e8\u304b\u3089\u63a5\u7d9a\u53ef\u80fd\u306a\u307e\u307e\u306b\u306a\u308b\u306e\u3067\u3001\u3053\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u5bfe\u7b56\u3068\u3057\u3066\u4e0d\u5341\u5206\u3067\u3042\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8106\u5f31\u6027\u306fWindows\u7248\u306e\u3059\u3079\u3066\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306eOutlook\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002Outlook for Android\u3001iOS\u3001macOS\u3001Windows\u306e\u30e6\u30fc\u30b6\u30fc\u3067\u3001Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u4f7f\u308f\u305aWeb\u7248Outlook (\u65e7\u79f0Outlook Web Application)\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093\u3002\u6a19\u7684\u30e6\u30fc\u30b6\u30fc\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3059\u308c\u3070\u305d\u308c\u3060\u3051\u3067\u653b\u6483\u306f\u6210\u529f\u3057\u307e\u3059\u3002\u3053\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u30c8\u30ea\u30ac\u30fc\u306b\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u308b\u64cd\u4f5c\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u304c\u3059\u3067\u306b\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u8db3\u5834\u3092\u7bc9\u3044\u3066\u3044\u308b\u5834\u5408\u3001CVE-2023-23397\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306f\u6975\u3081\u3066\u5bb9\u6613(trivial)\u306a\u306e\u3067\u3001NTLMv2\u30ea\u30ec\u30fc\u653b\u6483\u306b\u3088\u3063\u3066\u3001\u7279\u6a29\u6607\u683c\u306b\u304f\u308f\u3048\u3001\u74b0\u5883\u5185\u3067\u306e\u52b9\u679c\u7684\u306a\u30e9\u30c6\u30e9\u30eb\u30e0\u30fc\u30d6\u304c\u53ef\u80fd\u306b\u306a\u308b\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306f\u6280\u8853\u7684\u306b\u306f\u53ef\u80fd\u3067\u3059\u304c\u3001\u57fa\u76e4\u3068\u306a\u308b\u30af\u30ec\u30c7\u30f3\u30b7\u30e3\u30eb\u304c\u5f31\u304f\u3001\u7c21\u5358\u306b\u30af\u30e9\u30c3\u30af\u3055\u308c\u308b\u3082\u306e\u3067\u306a\u3044\u9650\u308a\u306f\u96e3\u3057\u3044\u3067\u3057\u3087\u3046\u3002\u3068\u3044\u3046\u306e\u306f\u3001NTLM\u30ea\u30ec\u30fc\u653b\u6483\u3092\u3057\u304b\u3051\u308b\u306b\u306fNTLMv2\u8a8d\u8a3c\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u5fc5\u8981\u3060\u304b\u3089\u3067\u3059\u3002\u79c1\u305f\u3061\u306f\u73fe\u6642\u70b9\u3067NTLMv2\u8a8d\u8a3c\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u306e\u5b58\u5728\u306f\u78ba\u8a8d\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u3053\u308c\u3068\u540c\u3058\u7406\u7531\u3067Microsoft\u3082\u5916\u90e8\u304b\u3089\u81ea\u30c9\u30e1\u30a4\u30f3\u306b\u7740\u4fe1\u3059\u308bNTLM\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u62d2\u5426\u3059\u308b\u3053\u3068\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Outlook for Web (\u65e7\u79f0Outlook Web Application)\u306fNTLM\u8a8d\u8a3c\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u305b\u3093\u304c\u3001Active Directory Federated Services(AD FS)\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/www.microsoft.com\/en-us\/security\/blog\/2023\/03\/24\/guidance-for-investigating-attacks-using-cve-2023-23397\/\" target=\"_blank\" rel=\"noopener\">Microsoft<\/a>\u306f\u300cit is possible that a federated identity provider may be susceptible. (\u30d5\u30a7\u30c7\u30ec\u30fc\u30c8\u3055\u308c\u305fID\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u306f\u3042\u308b)\u300d\u3068\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-127529-_50343o6a6han\"><\/a>\u73fe\u5728\u306e\u653b\u6483\u30b9\u30b3\u30fc\u30d7<\/h2>\n<p>Microsoft\u306f\u672c\u8106\u5f31\u6027\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u793a\u5506\u3059\u308b\u8a3c\u62e0\u3092<a href=\"https:\/\/www.microsoft.com\/en-us\/security\/blog\/2023\/03\/24\/guidance-for-investigating-attacks-using-cve-2023-23397\/\" target=\"_blank\" rel=\"noopener\">2022\u5e744\u6708<\/a>\u306b\u307e\u3067\u9061\u3063\u3066\u8ffd\u8de1\u3057\u305f\u3068\u516c\u8a00\u3057\u3066\u3044\u307e\u3059\u3002\u73fe\u6642\u70b9\u3067\u89b3\u6e2c\u3055\u308c\u3066\u3044\u308b\u653b\u6483\u306f\u3001\u30a6\u30af\u30e9\u30a4\u30ca\u306e\u30a4\u30f3\u30d5\u30e9\u3092\u72d9\u3046\u30ed\u30b7\u30a2\u7cfb\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u304b\u3089\u306e\u653b\u6483\u306e\u307f\u3067\u3059\u3002<\/p>\n<h2><a id=\"post-127529-_zg1rezlvhwuy\"><\/a>\u4e2d\u9593\u30ac\u30a4\u30c0\u30f3\u30b9<\/h2>\n<p>Microsoft\u306fIoC(\u4fb5\u5bb3\u306e\u75d5\u8de1)\u3084\u5931\u6557\u306b\u7d42\u308f\u3063\u305f\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u306e\u30cf\u30f3\u30c6\u30a3\u30f3\u30b0\u7528<a href=\"https:\/\/microsoft.com\/en-us\/security\/blog\/2023\/03\/24\/guidance-for-investigating-attacks-using-cve-2023-23397\/\" target=\"_blank\" rel=\"noopener\">\u30ac\u30a4\u30c0\u30f3\u30b9<\/a>\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3053\u306e\u30ac\u30a4\u30c0\u30f3\u30b9\u3067\u306f\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u9069\u7528\u3067\u304d\u306a\u3044\u304a\u305d\u308c\u306e\u3042\u308b\u7d44\u7e54\u306b\u7de9\u548c\u7b56\u3082\u63d0\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Microsoft\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">PidLidReminderFileParameter<\/span>\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u691c\u7d22\u3059\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u307b\u304b\u306b\u3082\u3001\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\u306eSMB\u63a5\u7d9a\u3084WebDAV\u63a5\u7d9a\u8a66\u884c\u3001Exchange Server\u3084SMBClient\u306e\u30ed\u30b0\u306b\u4e0d\u5be9\u306a\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u304c\u306a\u3044\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u30ac\u30a4\u30c0\u30f3\u30b9\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Microsoft\u306e\u7de9\u548c\u7b56\u306b\u306f\u3001\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u9069\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u306b\u3001\u7279\u6a29\u30a2\u30ab\u30a6\u30f3\u30c8\u3092Protected Users Group\u306b\u8ffd\u52a0\u3057\u3001\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9SMB\u63a5\u7d9a\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3053\u3068\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002Cortex XDR\u3068Cortex XSIAM\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u306f\u3001XDR\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u30928.0\u306b\u66f4\u65b0\u3057\u3001\u30b3\u30f3\u30c6\u30f3\u30c4 \u30d0\u30fc\u30b8\u30e7\u30f3\u3092910-49200\u3088\u308a\u65b0\u3057\u3044\u3082\u306e\u306b\u66f4\u65b0\u3057\u3001Advanced API\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u6a5f\u80fd\u3092\u6709\u52b9\u5316\u3057\u3066\u30ec\u30dd\u30fc\u30c8\u6a5f\u80fd\u3092\u4f7f\u3046\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2><a id=\"post-127529-_vgezw6a4uez\"><\/a>Unit 42 \u30de\u30cd\u30fc\u30b8\u30c9 \u30b9\u30ec\u30c3\u30c8 \u30cf\u30f3\u30c6\u30a3\u30f3\u30b0 \u30c1\u30fc\u30e0\u306b\u3088\u308b\u30af\u30a8\u30ea<\/h2>\n<p>Unit 42\u30de\u30cd\u30fc\u30b8\u30c9 \u30b9\u30ec\u30c3\u30c8 \u30cf\u30f3\u30c6\u30a3\u30f3\u30b0 \u30c1\u30fc\u30e0\u306f\u3001\u9867\u5ba2\u30d9\u30fc\u30b9\u5168\u4f53\u306b\u5bfe\u3057\u3001Cortex XDR\u3068XQL\u30af\u30a8\u30ea(\u4e0b\u8a18)\u3092\u4f7f\u3063\u3066\u3053\u308c\u3089CVE\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u3092\u7d99\u7d9a\u7684\u306b\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u3057\u3066\u3044\u307e\u3059\u3002Cortex XDR\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u3082\u4ee5\u4e0b\u306eXQL\u30af\u30a8\u30ea\u3067\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u75d5\u8de1\u3092\u691c\u7d22\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><!-- Crayon Syntax Highlighter v_2.7.2_beta --><\/p>\n<pre class=\"lang:default decode:true\">\/\/ Description: WebDAV connection attempt to public IP address.\r\n\/\/ Note: False positives may result from legitimate activities.\r\nconfig case_sensitive = false\r\n| dataset = xdr_data\r\n| filter event_type = PROCESS and actor_process_image_name = \"svchost.exe\" and action_process_image_name = \"rundll32.exe\" and action_process_image_command_line contains \"davsetcookie\"\r\n| alter webdav_address = arrayindex(regextract(action_process_image_command_line, \":\\\/\\\/(.*?)[ \\\/]\"), 0)\r\n| alter webdav_address_is_ip = if(webdav_address ~= \"^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$\", \"true\", \"false\")\r\n| filter webdav_address_is_ip = \"true\"\r\n| filter incidr(webdav_address, \"10.0.0.0\/8\") != true and incidr(webdav_address, \"192.168.0.0\/16\") != true and incidr(webdav_address, \"172.16.0.0\/12\") != true\r\n| fields actor_process_image_name, action_process_image_command_line, webdav_address, webdav_address_is_ip<\/pre>\n<p><!-- [Format Time: 0.0010 seconds] --><\/p>\n<h2><a id=\"post-127529-_6kajjrwpgjuu\"><\/a>\u7d50\u8ad6<\/h2>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306fOutlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8 \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u5bfe\u3059\u308bMicrosoft\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u9069\u7528\u3092\u5f37\u304f\u63a8\u5968\u3057\u307e\u3059\u3002\u305f\u3060\u3061\u306b\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u3044\u5834\u5408\u306f\u3001\u9069\u7528\u53ef\u80fd\u306b\u306a\u308b\u307e\u3067\u306e\u9593\u3001<a href=\"https:\/\/www.microsoft.com\/en-us\/security\/blog\/2023\/03\/24\/guidance-for-investigating-attacks-using-cve-2023-23397\/\" target=\"_blank\" rel=\"noopener\">Microsoft\u306e\u30ac\u30a4\u30c0\u30f3\u30b9\u306b\u5f93\u3063\u3066<\/a>\u7d44\u7e54\u3092\u4fdd\u8b77\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u3068Unit 42\u306f\u3001\u65b0\u305f\u306a\u60c5\u5831\u3001PoC(\u6982\u5ff5\u5b9f\u8a3c)\u30b3\u30fc\u30c9\u306e\u516c\u958b\u3001\u3055\u3089\u306a\u308b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8513\u5ef6\u306e\u75d5\u8de1\u306b\u3064\u3044\u3066\u5f15\u304d\u7d9a\u304d\u72b6\u6cc1\u3092\u76e3\u8996\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-127529-_lqzcx8cug942\"><\/a>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u88fd\u54c1\u306b\u3088\u308bCVE-2023-23397\u304b\u3089\u306e\u4fdd\u8b77<\/h2>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306b\u306f\u3001\u5f0a\u793e\u88fd\u54c1\/\u30b5\u30fc\u30d3\u30b9\u306e\u4fdd\u8b77\u30fb\u66f4\u65b0\u3092\u901a\u3058\u3001\u540c\u8105\u5a01\u306e\u7279\u5b9a\u3068\u9632\u5fa1\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4fb5\u5bb3\u306e\u61f8\u5ff5\u304c\u3042\u308a\u5f0a\u793e\u306b\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u95a2\u3059\u308b\u3054\u76f8\u8ac7\u3092\u306a\u3055\u308a\u305f\u3044\u5834\u5408\u306f\u3001<a href=\"https:\/\/start.paloaltonetworks.jp\/contact-unit42.html\" target=\"_blank\" rel=\"noopener\">infojapan@paloaltonetworks.com<\/a> \u307e\u3067\u96fb\u5b50\u30e1\u30fc\u30eb\u306b\u3066\u3054\u9023\u7d61\u3044\u305f\u3060\u304f\u304b\u3001\u4e0b\u8a18\u306e\u96fb\u8a71\u756a\u53f7\u307e\u3067\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044(\u3054\u76f8\u8ac7\u306f\u5f0a\u793e\u88fd\u54c1\u306e\u304a\u5ba2\u69d8\u306b\u306f\u9650\u5b9a\u3055\u308c\u307e\u305b\u3093)\u3002<\/p>\n<ul>\n<li>\u5317\u7c73\u30d5\u30ea\u30fc\u30c0\u30a4\u30e4\u30eb: 866.486.4842 (866.4.UNIT42)<\/li>\n<li>\u6b27\u5dde: +31.20.299.3130<\/li>\n<li>\u30a2\u30b8\u30a2\u592a\u5e73\u6d0b: +65.6983.8730<\/li>\n<li>\u65e5\u672c: +81.50.1790.0200<\/li>\n<\/ul>\n<h3><a id=\"post-127529-_elua7s89reap\"><\/a>\u9ad8\u5ea6\u306a\u8105\u5a01\u9632\u5fa1\u3092\u6709\u52b9\u306b\u3057\u305f\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068Prisma Access<\/h3>\n<p><a href=\"https:\/\/docs.paloaltonetworks.com\/ngfw\" target=\"_blank\" rel=\"noopener\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>(PA-Series\u3001VM-Series\u3001CN-Series)\u304a\u3088\u3073<a href=\"https:\/\/docs.paloaltonetworks.com\/advanced-threat-prevention\/administration\" target=\"_blank\" rel=\"noopener\">\u9ad8\u5ea6\u306a\u8105\u5a01\u9632\u5fa1<\/a>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3092\u6709\u52b9\u5316\u3057\u305f<a href=\"https:\/\/docs.paloaltonetworks.com\/sase\" target=\"_blank\" rel=\"noopener\">Prisma Access<\/a>\u306f\u3001\u8105\u5a01ID 93584 (Application and Threat content update 8687)\u3067CVE-2023-23397\u306b\u95a2\u9023\u3059\u308b\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u81ea\u52d5\u7684\u306b\u30d6\u30ed\u30c3\u30af\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3><a id=\"post-127529-_xd3ptpj9t2jf\"><\/a>Cortex XSOAR<\/h3>\n<p><a href=\"https:\/\/cortex.marketplace.pan.dev\/marketplace\/details\/CVE_2023_23397__Microsoft_Outlook_EoP\/\" target=\"_blank\" rel=\"noopener\">Cortex XSOAR CVE-2023-23397 - Microsoft Outlook EoP (Elevation of Privilege) \u30d1\u30c3\u30af<\/a>\u306b\u306f\u3001\u6307\u6a19\u306e\u53ce\u96c6\u3001\u4e0d\u5be9\u306a\u30e1\u30fc\u30eb\u306e\u7279\u5b9a\u3068\u51e6\u7406\u3092\u652f\u63f4\u3059\u308b\u81ea\u52d5\u5316\u3055\u308c\u305f\u30d7\u30ec\u30a4\u30d6\u30c3\u30af\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30d7\u30ec\u30a4\u30d6\u30c3\u30af\u3067\u306fMicrosoft\u306ePowerShell\u30cf\u30f3\u30c6\u30a3\u30f3\u30b0 \u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f7f\u3063\u3066\u4e0d\u5be9\u30e1\u30fc\u30eb\u306e\u7279\u5b9a\u3068\u524a\u9664\u3082\u884c\u3048\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u672c\u8106\u5f31\u6027\u306b\u95a2\u3059\u308b\u516c\u958b\u6e08\u307f\u306e\u7de9\u548c\u7b56\u3084\u56de\u907f\u7b56\u3082\u672c\u30d7\u30ec\u30a4\u30d6\u30c3\u30af\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3><a id=\"post-127529-_83369powom4n\"><\/a>Cortex XDR\u3068Cortex XSIAM<\/h3>\n<p>Cortex XDR\u3067\u30d0\u30fc\u30b8\u30e7\u30f38.0\u306e\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3092\u5b9f\u884c\u3057\u3001\u30b3\u30f3\u30c6\u30f3\u30c4 \u30d0\u30fc\u30b8\u30e7\u30f3\u3092910-49200\u3088\u308a\u65b0\u3057\u3044\u3082\u306e\u306b\u66f4\u65b0\u3057\u3001Advanced API Monitoring\u3092\u6709\u52b9\u306b\u3059\u308b\u3068\u3001<span style=\"font-family: 'courier new', courier, monospace;\">outlook.exe<\/span>\u30d7\u30ed\u30bb\u30b9\u306e\u52d5\u4f5c\u3092\u76e3\u8996\u3057\u3066CVE-2023-23397\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u691c\u51fa\u3067\u304d\u307e\u3059\u3002UNC\u304b\u3089\u306e\u30b5\u30a6\u30f3\u30c9 \u30d5\u30a1\u30a4\u30eb \u30d1\u30b9\u3067\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u304c\u518d\u751f\u3055\u308c\u308b\u305f\u3073\u3001\u30ea\u30e2\u30fc\u30c8 \u30d1\u30b9\u306e\u8a73\u7d30\u3092\u63d0\u793a\u3057\u3066\u30a2\u30e9\u30fc\u30c8\u304c\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3><a id=\"post-127529-_m5cvrg1ww3e6\"><\/a>Prisma Cloud<\/h3>\n<p>Windows Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u30a8\u30f3\u30c9 \u30e6\u30fc\u30b6\u30fc \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3001\u30af\u30e9\u30a6\u30c9\u3084\u30b3\u30f3\u30c6\u30ca\u30fc\u904b\u7528\u3068\u95a2\u9023\u3059\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3057\u3001Windows Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u30af\u30e9\u30a6\u30c9\u3084\u30b3\u30f3\u30c6\u30ca\u30fc\u74b0\u5883\u3067\u52d5\u4f5c\u3055\u305b\u308b\u3053\u3068\u306f\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30af\u30e9\u30a6\u30c9\u3084\u30b3\u30f3\u30c6\u30ca\u30fc\u74b0\u5883\u5185\u3067Windows Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u52d5\u4f5c\u3057\u3066\u3044\u308b\u72b6\u6cc1\u306f\u6975\u3081\u3066\u7591\u308f\u3057\u3044\u3068\u8003\u3048\u308b\u3079\u304d\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>Prisma Cloud\u306fCVE-2023-23397\u306e\u8106\u5f31\u6027\u3092\u691c\u51fa\u3057\u307e\u305b\u3093\u304c\u3001\u30af\u30e9\u30a6\u30c9\u3084\u30b3\u30f3\u30c6\u30ca\u30fc\u74b0\u5883\u3067\u52d5\u4f5c\u3059\u308bWindows Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u6709\u7121\u3092\u691c\u51fa\u3057\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-127529-_ydqdbjg0dngh\"><\/a>IoC<\/h2>\n<p>\u4ee5\u4e0b\u306e\u6307\u6a19\u306f<a href=\"https:\/\/www.microsoft.com\/en-us\/security\/blog\/2023\/03\/24\/guidance-for-investigating-attacks-using-cve-2023-23397\/\" target=\"_blank\" rel=\"noopener\">Microsoft\u304b\u3089\u63d0\u4f9b\u3055\u308c\u305f<\/a>\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u8907\u6570\u306e\u60aa\u610f\u306e\u3042\u308b\u30b5\u30f3\u30d7\u30eb\u304cVirusTotal\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u3001CVE-2023-23397\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3068\u95a2\u9023\u3059\u308b\u6f5c\u5728\u7684\u306b\u60aa\u8cea\u306a\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u8b58\u5225\u7528\u30b7\u30b0\u30cd\u30c1\u30e3\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002<a href=\"https:\/\/www.virustotal.com\/gui\/search\/crowdsourced_yara_rule%253A000bc4a247%257CEXPL_SUSP_Outlook_CVE_2023_23397_Exfil_IP_Mar23\" target=\"_blank\" rel=\"noopener\">VirusTotal\u306e\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u5951\u7d04\u8005\u306f\u3053\u308c\u3089\u306e\u7d50\u679c\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/a><\/p>\n<p>\u4e0a\u8a18VirusTotal\u306e\u7d50\u679c\u306b\u542b\u307e\u308c\u308b\u3001\u672c\u8106\u5f31\u6027\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3068\u95a2\u9023\u3059\u308b\u65e2\u77e5\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002\u6ce8: \u3053\u308c\u3089\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u3001Microsoft Threat Intelligence\u306b\u3088\u308a\u3001\u4fb5\u5bb3\u3055\u308c\u305f\u30a4\u30f3\u30d5\u30e9\u3067\u3042\u308b\u3068\u8a55\u4fa1\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">101.255.119[.]42<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">213.32.252[.]221<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">168.205.200[.]55<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">185.132.17[.]160<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">69.162.253[.]21<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">113.160.234[.]229<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">181.209.99[.]204<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">82.196.113[.]102<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">85.195.206[.]7<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">61.14.68[.]33<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 2023\u5e743\u670814\u65e5\u3001Microsoft\u306fCVE-2023-23397\u3092\u4fee\u6b63\u3059\u308b\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u516c\u958b\u3057\u307e\u3057\u305f\u3002CVE-2023-23397\u306fWindows Microsoft Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u304a\u3051\u308b\u8106\u5f31<\/p>\n","protected":false},"author":23,"featured_media":134408,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[4432,4428,4470],"tags":[4805,5201,4811,4813],"product_categories":[4449],"coauthors":[1025],"class_list":["post-127529","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-top-cyberthreats-ja","category-threat-research-ja","category-vulnerabilities-ja","tag-cve-2023-23397-ja","tag-email-compromise-ja","tag-microsoft-outlook-ja","tag-microsoft-vulnerability-ja","product_categories-cortex-xpanse-ja"],"yoast_head":"<!-- This site is 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