{"id":117452,"date":"2021-03-11T18:59:24","date_gmt":"2021-03-12T02:59:24","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=117452"},"modified":"2021-03-17T16:34:57","modified_gmt":"2021-03-17T23:34:57","slug":"microsoft-exchange-server-attack-timeline","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/microsoft-exchange-server-attack-timeline\/","title":{"rendered":"Microsoft Exchange Server\u3078\u306e\u653b\u6483\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>2021\u5e743\u67082\u65e5\u3001Microsoft Exchange Server\u306e\u8907\u6570\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b4\u3064\u306e\u91cd\u5927\u306a\u30bc\u30ed\u30c7\u30a4\u8106\u5f31\u6027\u304c\u4e00\u822c\u516c\u958b\u3055\u308c\u307e\u3057\u305f\uff08<a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2021-26855\">CVE-2021-26855<\/a>\u3001<a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2021-26857\">CVE-2021-26857<\/a>\u3001<a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2021-26858\">CVE-2021-26858<\/a>\u3001<a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2021-27065\">CVE-2021-27065<\/a>\uff09\u3002\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u516c\u958b\u306b\u3042\u308f\u305b\u3001Microsoft\u306f<a href=\"https:\/\/techcommunity.microsoft.com\/t5\/exchange-team-blog\/released-march-2021-exchange-server-security-updates\/ba-p\/2175901\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0<\/a>\u3068<a href=\"https:\/\/msrc-blog.microsoft.com\/2021\/03\/05\/microsoft-exchange-server-vulnerabilities-mitigations-march-2021\/\">\u6280\u8853\u30ac\u30a4\u30c0\u30f3\u30b9<\/a>\u3068\u3092\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u3067\u306f\u3001\u305f\u3060\u3061\u306b\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u306e\u91cd\u8981\u6027\u3092\u5f37\u8abf\u3059\u308b\u3068\u3068\u3082\u306b\u3001\u540c\u793e\u304c<a href=\"https:\/\/blogs.microsoft.com\/on-the-issues\/2021\/03\/02\/new-nation-state-cyberattacks\/\">HAFNIUM<\/a>\u3068\u547c\u3076\u3001Advanced Persistent Threat\uff08APT\u3001\u6301\u7d9a\u7684\u6a19\u7684\u578b\u653b\u6483\uff09\u306b\u3088\u308b\u30a2\u30af\u30c6\u30a3\u30d6\u3067\u7d99\u7d9a\u7684\u306a\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u3082\u8a00\u53ca\u3057\u3066\u3044\u307e\u3059\u3002\u6700\u521d\u306e\u653b\u6483\u4ee5\u6765\u3001Unit 42\u3092\u542b\u3080\u8907\u6570\u306e\u8105\u5a01\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30b9\u30c1\u30fc\u30e0\u306f\u3001\u8907\u6570\u306e\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u304c\u3053\u308c\u3089\u306e\u30bc\u30ed\u30c7\u30a4\u8106\u5f31\u6027\u3092\u5b9f\u969b\u306b\u60aa\u7528\u3057\u3066\u3044\u308b\u69d8\u5b50\u3092\u89b3\u6e2c\u3057\u3066\u3044\u307e\u3059\u3002\u8106\u5f31\u6027\u81ea\u4f53\u3082\u305d\u3046\u3067\u3059\u304c\u3001\u305d\u308c\u3089\u3092\u60aa\u7528\u3059\u308b\u3053\u3068\u3067\u653b\u6483\u8005\u304c\u5f97\u308b\u30a2\u30af\u30bb\u30b9\u3082\u91cd\u8981\u3067\u3059\u3002\u3067\u3059\u304b\u3089\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u306b\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u9069\u7528\u3055\u308c\u3066\u3057\u307e\u3046\u524d\u306b\u3001\u8907\u6570\u306e\u653b\u6483\u8005\u304c\u8106\u5f31\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u4fb5\u5bb3\u3057\u3088\u3046\u3068\u3057\u7d9a\u3051\u3066\u3044\u308b\u3053\u3068\u306b\u306f\u306a\u3093\u3089\u4e0d\u601d\u8b70\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u653b\u6483\u306f\u524d\u4f8b\u306e\u306a\u3044\u898f\u6a21\u3067\u9032\u884c\u4e2d\u3067\u3059\u30022021\u5e743\u67088\u65e5\u306e\u6642\u70b9\u3067\u3001\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9Expanse\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u53ce\u96c6\u3055\u308c\u305f\u30c6\u30ec\u30e1\u30c8\u30ea\u306b\u57fa\u3065\u3051\u3070\u3001\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u9069\u7528\u3055\u308c\u3066\u3044\u306a\u3044Exchange Server\u306f\u3001\u4e16\u754c\u4e2d\u306b125,000\u53f0\u4ee5\u4e0a\u6b8b\u3063\u3066\u3044\u308b\u3068\u63a8\u6e2c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u518d\u69cb\u7bc9\u3055\u308c\u305f\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u306b\u57fa\u3065\u304f\u3068\u30012021\u5e741\u67083\u65e5\u306b\u3053\u306e\u8106\u5f31\u6027\u306b\u3064\u3044\u3066\u77e5\u3089\u308c\u3066\u3044\u308b\u6700\u521d\u306e\u60aa\u7528\u304c\u884c\u308f\u308c\u3066\u304b\u3089Microsoft\u304c3\u67082\u65e5\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u307e\u3067\u306e\u9593\u306b\u306f\u5c11\u306a\u304f\u3068\u308258\u65e5\u9593\u3042\u3044\u3066\u3044\u308b\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u9069\u7528\u306f\u5fc5\u8981\u3068\u3055\u308c\u308b\u6700\u521d\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u3059\u304c\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304c\u5b9f\u969b\u306b\u884c\u308f\u308c\u3066\u3044\u305f\u671f\u9593\u306e\u9577\u3055\u3092\u8003\u3048\u308b\u3068\u305d\u308c\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u3067\u3059\u3002\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u9069\u7528\u3057\u3066\u3082\u3001\u653b\u6483\u8005\u304c\u8106\u5f31\u306a\u30b7\u30b9\u30c6\u30e0\u306b\u5bfe\u3059\u308b\u30a2\u30af\u30bb\u30b9\u3092\u3059\u3067\u306b\u596a\u53d6\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u308c\u306f\u4fee\u5fa9\u3055\u308c\u307e\u305b\u3093\u3002\u7d44\u7e54\u306e\u7686\u3055\u3093\u306f\u3053\u3061\u3089\u306e<a href=\"https:\/\/unit42.paloaltonetworks.jp\/remediation-steps-for-the-microsoft-exchange-server-vulnerabilities\/\">\u4fee\u5fa9\u30ac\u30a4\u30c9<\/a>\u3092\u53c2\u8003\u306b\u3001Exchange Server\u3092\u9069\u5207\u306b\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u5b9f\u884c\u3067\u304d\u308b\u624b\u9806\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u4e00\u9023\u306e\u8106\u5f31\u6027\u304c\u516c\u958b\u3055\u308c\u3066\u304b\u30892\u9031\u76ee\u306b\u5165\u308a\u307e\u3057\u305f\u304c\u3001\u521d\u671f\u306e\u898b\u7a4d\u308a\u3067\u4fb5\u5bb3\u3092\u53d7\u3051\u305f\u7d44\u7e54\u6570\u306f\u6570\u4e07\u306b\u306e\u307c\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u88ab\u5bb3\u898f\u6a21\u3084\u30b0\u30ed\u30fc\u30d0\u30eb\u3067\u63a8\u5b9a\u3055\u308c\u308b\u4fee\u5fa9\u8cbb\u7528\u306e\u89b3\u70b9\u304b\u3089\u3059\u308b\u3068\u3001\u6700\u8fd1\u306e<a href=\"https:\/\/unit42.paloaltonetworks.jp\/solarstorm-supply-chain-attack-timeline\/\">SolarStorm\u306e\u30b5\u30d7\u30e9\u30a4\u30c1\u30a7\u30fc\u30f3\u653b\u6483<\/a>\u306b\u3088\u308b\u5f71\u97ff\u304c\u304b\u3059\u3093\u3067\u898b\u3048\u3066\u3057\u307e\u3046\u307b\u3069\u3067\u3059\u3002\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u306e\u91cd\u8981\u6027\u306b\u9451\u307f\u3001\u73fe\u5728\u5165\u624b\u53ef\u80fd\u306a\u60c5\u5831\u306e\u5e83\u7bc4\u306a\u8abf\u67fb\u306b\u304f\u308f\u3048\u3001\u3053\u308c\u3089\u653b\u6483\u304b\u3089\u306e\u9632\u5fa1\u3092\u884c\u3063\u3066\u304d\u305f\u76f4\u63a5\u7684\u4f53\u9a13\u306b\u57fa\u3065\u304d\u3001\u672c\u7a3f\u3067\u306f\u653b\u6483\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u3092\u516c\u958b\u3057\u307e\u3059\u3002\u72b6\u6cc1\u306f\u523b\u3005\u3068\u5909\u308f\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u4ed6\u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u306e\u7686\u3055\u3093\u306b\u3082\u767a\u898b\u5185\u5bb9\u306e\u3054\u5171\u6709\u3092\u3044\u305f\u3060\u304d\u3001\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u5168\u4f53\u304c\u4e00\u4e38\u3068\u306a\u3063\u3066\u3067\u304d\u308b\u3060\u3051\u65e9\u304f\u3053\u306e\u5168\u4f53\u50cf\u3092\u628a\u63e1\u3067\u304d\u308b\u3088\u3046\u3001\u3054\u5354\u529b\u3092\u304a\u9858\u3044\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n<h2>Microsoft Exchange Server\u653b\u6483\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u6982\u8981<\/h2>\n<p>\u8a71\u306f6\u304b\u6708\u4ee5\u4e0a\u524d\u306b\u3055\u304b\u306e\u307c\u308a\u307e\u3059\u3002\u305d\u306e\u3053\u308d\u3001<a href=\"https:\/\/proxylogon.com\/#timeline\">DevCore<\/a>\u3068\u3044\u3046\u53f0\u6e7e\u3092\u62e0\u70b9\u3068\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b3\u30f3\u30b5\u30eb\u30c6\u30a3\u30f3\u30b0\u4f1a\u793e\u304cMicrosoft Exchange Server\u88fd\u54c1\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u8abf\u67fb\u3059\u308b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u958b\u59cb\u3057\u307e\u3057\u305f\u30022020\u5e7410\u6708\u304b\u308912\u6708\u307e\u3067\u306e2\u304b\u6708\u306e\u9593\u306b\u3001DevCore\u306e\u8abf\u67fb\u306f\u5927\u304d\u304f\u524d\u9032\u3057\u3001\u3053\u308c\u304c\u6700\u7d42\u7684\u306b2020\u5e7412\u670810\u65e5\u306e\u4e8b\u524d\u8a8d\u8a3c\u30d7\u30ed\u30ad\u30b7\u8106\u5f31\u6027\u767a\u898b\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u306f\u3001DevCore\u306b\u3088\u3063\u3066ProxyLogon\u3068\u3044\u3046\u540d\u524d\u304c\u4ed8\u3051\u3089\u308c\u3001\u73fe\u5728\u306fCVE-2021-26855\u3068\u3057\u3066\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u6700\u521d\u306e\u767a\u898b\u306b\u7d9a\u304d\u30012020\u5e7412\u670827\u65e5\u306bDevCore\u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u304c\u540c\u8106\u5f31\u6027\u306b\u3088\u308a\u8a8d\u8a3c\u30d0\u30a4\u30d1\u30b9\u3092\u5b9f\u884c\u3001\u305d\u308c\u306b\u3088\u3063\u3066\u8106\u5f31\u306aExchange Server\u306b\u5bfe\u3059\u308b\u7ba1\u7406\u8005\u30ec\u30d9\u30eb\u306e\u30a2\u30af\u30bb\u30b9\u8a31\u53ef\u3092\u30e6\u30fc\u30b6\u30fc\u306b\u4ed8\u4e0e\u3067\u304d\u308b\u3053\u3068\u3092\u5b9f\u8a3c\u3057\u307e\u3059\u3002\u3053\u306e\u767a\u898b\u306e\u76f4\u5f8c\u30012020\u5e7412\u670830\u65e5\u3001DevCore\u306f2\u3064\u76ee\u306e\u8a8d\u8a3c\u5f8c\u30d5\u30a1\u30a4\u30eb\u66f8\u304d\u8fbc\u307f\u30d0\u30b0\u3082\u767a\u898b\u3057\u307e\u3059\u3002\u3053\u308c\u3092\u6700\u521d\u306e\u8106\u5f31\u6027\u3068\u3064\u306a\u304e\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001Exchange Server\u3078\u306e\u7279\u6a29\u30a2\u30af\u30bb\u30b9\u3092\u596a\u53d6\u3057\u3001\u653b\u6483\u8005\u304c\u9078\u629e\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u4efb\u610f\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u306e2\u3064\u76ee\u306e\u8106\u5f31\u6027\u306f\u3001\u73fe\u5728CVE-2021-27065\u3068\u3057\u3066\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u767a\u898b\u306e\u6642\u671f\u3068\u5e74\u672b\u5e74\u59cb\u306e\u9577\u3044\u9031\u672b\u306e\u5b58\u5728\u3092\u8003\u616e\u3057\u3001DevCore\u306f\u6b21\u306e\u706b\u66dc\u65e5\uff082021\u5e741\u67085\u65e5\uff09\u306bMicrosoft\u306b\u9023\u7d61\u3001\u3053\u306e\u8106\u5f31\u6027\u3092\u901a\u77e5\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u3068\u304d\u540c\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u306f\u8106\u5f31\u6027\u767a\u898b\u306e\u529f\u7e3e\u3092\u516c\u306b\u8a8d\u3081\u308b\u30c4\u30a4\u30fc\u30c8\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img  class=\"aligncenter wp-image-117438 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/03\/word-image-45.png\" alt=\"Microsoft Exchange Server\u306e\u653b\u6483\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u306f\u3001\u300c\u8a8d\u8a3c\u524d\u306eRCE\u30c1\u30a7\u30fc\u30f3\u3092\u30d9\u30f3\u30c0\u306b\u305f\u3063\u305f\u3044\u307e\u5831\u544a\u3057\u305f\u300d\u3068\u3044\u3046\u30e6\u30fc\u30b6\u30fcOrange Tsai\uff08@orange_8361\uff09\u306eTwitter\u6295\u7a3f\u3067\u59cb\u307e\u308a\u307e\u3057\u305f\u3002This might be the most serious RCE I have ever reported!\uff08\u3053\u308c\u306f\u79c1\u304c\u4eca\u307e\u3067\u306b\u5831\u544a\u3057\u305f\u4e2d\u3067\u6700\u3082\u6df1\u523b\u306aRCE\u304b\u3082\u3057\u308c\u307e\u305b\u3093!\uff09Hope there is no bug collision or duplicate XD\uff08\u30d0\u30b0\u5831\u544a\u306e\u885d\u7a81\u3068\u304b\u91cd\u8907\u3068\u304b\u304c\u306a\u3044\u3068\u3044\u3044\u3051\u3069\uff09\" width=\"554\" height=\"179\" \/><\/p>\n<p>\u3053\u306e\u6642\u70b9\u3067\u3001\u5b9f\u969b\u306e\u653b\u6483\u6d3b\u52d5\u304c\u3042\u3089\u308f\u308c\u306f\u3058\u3081\u307e\u3057\u305f\u3002\u7c73\u56fd\u3092\u62e0\u70b9\u3068\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4f1a\u793eVolexity\u306f\u3001\u65e9\u304f\u30821\u67083\u65e5\u306b\u306fProxyLogon\u8106\u5f31\u6027\u3092\u4f34\u3046\u653b\u6483\u304c\u3042\u3063\u305f\u3053\u3068\u3092<a href=\"https:\/\/www.volexity.com\/blog\/2021\/03\/02\/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities\/\">\u5831\u544a<\/a>\u3057\u3066\u3044\u307e\u3059\u30022\u67082\u65e5\u306b\u540c\u793e\u306fMicrosoft Information\u306b\u5bfe\u30571\u67086\u65e5\u306b\u767a\u751f\u3057\u305f\u653b\u6483\u306b\u3064\u3044\u3066\u3082\u5831\u544a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u540c\u3058\u3053\u308d\u3001\u30c7\u30f3\u30de\u30fc\u30af\u3092\u62e0\u70b9\u3068\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4f1a\u793e<a href=\"https:\/\/www.dubex.dk\/aktuelt\/nyheder\/hafnium-attack-dubex-recommendations\">Dubex<\/a>\u304c\u30012021\u5e741\u670818\u65e5\u306eMicrosoft Exchange UMWorkerProcess\u306b\u5bfe\u3059\u308b\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u3064\u3044\u3066\u3001\u6700\u521d\u306b\u8a00\u53ca\u3057\u305f\u3082\u306e\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u306f\u73fe\u5728\u306fCVE-2021-26857\u3068\u3057\u3066\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u540c\u8106\u5f31\u6027\u306f\u3001Volexity\u304c\u6307\u6458\u3057\u305f\u653b\u6483\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u3082\u306e\u3067\u3001\u653b\u6483\u8005\u306f\u8106\u5f31\u306a\u30b5\u30fc\u30d0\u30fc\u306bWeb\u30b7\u30a7\u30eb\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u305f\u3081\u306b\u3053\u308c\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3057\u305f\u3002Dubex\u306f2021\u5e741\u670827\u65e5\u306b\u8abf\u67fb\u7d50\u679c\u3092Microsoft\u306b\u901a\u77e5\u3057\u305f\u3068<a href=\"https:\/\/krebsonsecurity.com\/2021\/03\/a-basic-timeline-of-the-exchange-mass-hack\/\">\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3059<\/a>\u304c\u3001\u3053\u306e\u3068\u304d\u3001\u6700\u521d\u306e\u767a\u898b\u304b\u3089\u307e\u306010\u65e5\u3082\u305f\u3063\u3066\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<p><img  class=\"aligncenter wp-image-117440 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/03\/word-image-46.png\" alt=\"\u30e6\u30fc\u30b6\u30fcDubex\uff08@Dubex\uff09\u304b\u3089\u306eTwitter\u6295\u7a3f: In January 2021 the #Dubex Incident Response Team discovered a vulnerability on the Microsoft Exchange servers caused by the Chinese group Hafnium.\uff082021\u5e741\u6708\u3001#Dubex\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5bfe\u5fdc\u30c1\u30fc\u30e0\u306f\u3001\u4e2d\u56fd\u767a\u306e\u653b\u6483\u30b0\u30eb\u30fc\u30d7Hafnium\u304cMicrosoft Exchange Server\u306e\u8106\u5f31\u6027\u3092\u60aa\u7528\u3057\u3066\u3057\u305f\u69d8\u5b50\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\uff09Today @Microsoft has released patches for these vulnerabilities.\uff08\u672c\u65e5@Microsoft\u306f\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u306b\u5bfe\u3059\u308b\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u516c\u958b\u3057\u307e\u3057\u305f\u3002\uff09\u6295\u7a3f\u306e\u5f8c\u306b\u306f\u30ea\u30f3\u30af\u30682\u3064\u306e\u30cf\u30c3\u30b7\u30e5\u30bf\u30b0 #HAFNIUM\u3001#incidentresponse \u304c\u7d9a\u3044\u3066\u3044\u307e\u3059\u3002\" width=\"555\" height=\"387\" \/><\/p>\n<p>2\u793e\u306e\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d9\u30f3\u30c0\u304c\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u8a3c\u62e0\u3092\u63d0\u4f9b\u3057\u305f\u305f\u3081\u3001DevCore\u306f2021\u5e742\u670818\u65e5\u306bMicrosoft\u306b\u30d5\u30a9\u30ed\u30fc\u30a2\u30c3\u30d7\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u3053\u3046\u3057\u305f\u3084\u308a\u3068\u308a\u306e\u306a\u304b\u3067DevCore\u306f\u30c9\u30e9\u30d5\u30c8\u7248\u306e\u30a2\u30c9\u30d0\u30a4\u30b6\u30ea\u901a\u77e5\u3092\u63d0\u4f9b\u3057\u3001\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u516c\u958b\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u306b\u95a2\u3059\u308b\u8a73\u7d30\u3092Microsoft\u306b\u4f9d\u983c\u3057\u307e\u3057\u305f\u3002\u3053\u3053\u3067Microsoft\u306f3\u67089\u65e5\u306b\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u516c\u958b\u3059\u308b\u4e88\u5b9a\u3067\u3042\u308b\u3053\u3068\u3092DevCore\u306b\u5171\u6709\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>2021\u5e742\u670827\u65e5\u3001Microsoft\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u3092\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u6e96\u5099\u304c\u307b\u307c\u6574\u3063\u305f\u3053\u3068\u3092DevCore\u306b\u901a\u77e5\u3057\u307e\u3059\u3002\u540c\u65e5\u3001\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306f\u7570\u5e38\u306aWeb\u30b7\u30a7\u30eb\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u5897\u52a0\u3092\u89b3\u6e2c\u3057\u3001\u7d9a\u304f2\u65e5\u9593\u3067\u3001\u8907\u6570\u306e\u8105\u5a01\u30b0\u30eb\u30fc\u30d7\u304c\u6d3b\u767a\u306b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u3057\u304b\u3051\u306f\u3058\u3081\u305f\u3053\u3068\u3092\u793a\u3059\u8a3c\u62e0\u304c\u3042\u304c\u3063\u3066\u304d\u307e\u3057\u305f\u3002ESET\u306f3\u3064\u306e\u5225\u3005\u306e\u30b0\u30eb\u30fc\u30d7\uff08Tick\u3001LuckyMouse\u3001Calypso\uff09\u306b\u3064\u3044\u3066<a href=\"https:\/\/www.welivesecurity.com\/2021\/03\/10\/exchange-servers-under-siege-10-apt-groups\/\">\u5831\u544a\u3057<\/a>\u3001Unit 42\u3082\u72ec\u81ea\u306b\u8abf\u67fb\u3057\u305f<a href=\"https:\/\/unit42.paloaltonetworks.jp\/china-chopper-webshell\/\">Web\u30b7\u30a7\u30eb\u5206\u6790<\/a>\u306b\u3088\u308a\u3001\u540c\u6642\u671f\u306b\u5c55\u958b\u3055\u308c\u305f6\u3064\u306e\u4e00\u610f\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3068\u4e00\u9023\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u8b58\u5225\u3057\u305f\u3053\u3068\u3092\u5831\u544a\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306f\u3001\u8907\u6570\u306e\u8105\u5a01\u30b0\u30eb\u30fc\u30d7\u304c\u5b58\u5728\u3059\u308b\u3068\u3044\u3046\u4e3b\u5f35\u3092\u3055\u3089\u306b\u88cf\u4ed8\u3051\u308b\u3082\u306e\u3067\u3057\u305f\u30022021\u5e742\u670828\u65e5\u306b\u89b3\u5bdf\u3055\u308c\u305f\u30d1\u30b9\u30ef\u30fc\u30c9\u306e1\u3064\u306b\u3082\u6ce8\u76ee\u306b\u5024\u3057\u307e\u3059\u3002\u3068\u3044\u3046\u306e\u3082\u305d\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u306f\u300corange\u300d\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u3053\u308c\u306f\u540c\u8106\u5f31\u6027\u3092\u6700\u521d\u306b\u767a\u898b\u3057\u305f\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u306b\u8a00\u53ca\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u5f53\u521d\u306e\u8a08\u753b\u3088\u308a1\u9031\u9593\u65e9\u30442021\u5e743\u67082\u65e5\u3001Microsoft\u306f\u3053\u308c\u30894\u3064\u306e\u8106\u5f31\u6027\u306e\u305f\u3081\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u3092<a href=\"https:\/\/www.microsoft.com\/security\/blog\/2021\/03\/02\/hafnium-targeting-exchange-servers\/\">\u516c\u958b<\/a>\u3057\u307e\u3059\u3002\u516c\u958b\u306b\u3055\u3044\u3057Microsoft\u306f\u540c\u793e\u304cHAFNIUM\u3068\u540d\u4ed8\u3051\u305f\u653b\u6483\u30b0\u30eb\u30fc\u30d7\u306b\u3088\u308b\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u306e\u7a4d\u6975\u7684\u306a\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u3064\u3044\u3066\u8b66\u544a\u3057\u3001\u3055\u3089\u306b\u3053\u308c\u304c\u4e2d\u56fd\u3067\u6d3b\u52d5\u4e2d\u306e\u56fd\u5bb6\u652f\u63f4\u306eAPT\u3067\u3042\u308b\u3068\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>CVE\u516c\u958b\u5f8c\u306e\u6570\u65e5\u9593\u3001\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306f\u653b\u6483\u306e\u6025\u5897\u3092\u76ee\u306b\u3057\u307e\u3057\u305f\u3002\u3053\u3046\u3057\u305f\u6025\u5897\u306e\u80cc\u666f\u306b\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9632\u5fa1\u5074\u304c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u3092\u5c55\u958b\u3059\u308b\u524d\u306b\u8106\u5f31\u6027\u3092\u6700\u5927\u9650\u60aa\u7528\u3057\u3088\u3046\u3068\u3059\u308b\u60aa\u610f\u306e\u3042\u308b\u653b\u6483\u8005\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\u3053\u30531\u9031\u9593\u306e\u9593\u306b\u3001\u79c1\u305f\u3061\u306f\u8907\u6570\u306e\u65b0\u3057\u3044Web\u30b7\u30a7\u30eb\u30d1\u30b9\u30ef\u30fc\u30c9\u3068\u4e00\u9023\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u51fa\u73fe\u3082\u7279\u5b9a\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u3089\u306e\u88ab\u5bb3\u6bcd\u96c6\u56e3\u306b\u306f\u91cd\u8907\u304c\u898b\u3089\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u3053\u3068\u304b\u3089\u79c1\u305f\u3061\u306f\u3001\u73fe\u6642\u70b9\u3067\u306f\u3055\u307e\u3056\u307e\u306a\u52d5\u6a5f\u3092\u6301\u3064\u3044\u304f\u3064\u304b\u306e\u8907\u6570\u306e\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u304c\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u3092\u60aa\u7528\u3059\u308b\u53d6\u308a\u7d44\u307f\u3092\u958b\u59cb\u3057\u3066\u3044\u308b\u3082\u306e\u3068\u898b\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6700\u5f8c\u306b\u3001Microsoft\u306b\u3088\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f2021\u5e743\u67082\u65e5\u306b\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u304c\u3001\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u3068\u3044\u3046\u89b3\u70b9\u304b\u3089\u3001\u3053\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u9069\u7528\u3067\u7d44\u7e54\u304c\u5f97\u3089\u308c\u308b\u4fdd\u8b77\u306f\u540c\u8106\u5f31\u6027\u306e\u7d99\u7d9a\u7684\u60aa\u7528\u30fb\u5c06\u6765\u53d7\u3051\u308b\u60aa\u7528\u306b\u5bfe\u3057\u3066\u306e\u307f\u3067\u3042\u308b\u3068\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u516c\u958b\u4ee5\u524d\u306b\u4fb5\u5bb3\u304c\u884c\u308f\u308c\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u3053\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u3067\u306f\u7d44\u7e54\u306f\u4fdd\u8b77\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u524d\u8ff0\u306e\u901a\u308a\u3001\u3053\u308c\u3089\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306f1\u6708\u4e0a\u65ec\u307e\u3067\u306b\u306f\u7a4d\u6975\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u305f\u3068\u3044\u3046\u660e\u78ba\u306a\u8a3c\u62e0\u304c\u3042\u308a\u3001\u5c11\u306a\u304f\u3068\u30822\u304b\u6708\u9593\u306f\u8106\u5f31\u306a\u72b6\u614b\u3060\u3063\u305f\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3057\u304b\u30821\u6708\u4ee5\u524d\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u8a3c\u62e0\u304c\u306a\u3044\u304b\u3089\u3068\u3044\u3063\u3066\u305d\u308c\u4ee5\u524d\u306f\u6575\u5bfe\u884c\u70ba\u3082\u306a\u304b\u3063\u305f\u3068\u8003\u3048\u308b\u3053\u3068\u306f\u8aa4\u308a\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_117460\" aria-describedby=\"caption-attachment-117460\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/03\/image2-jp-1.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-117460 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/03\/image2-jp-1.png\" alt=\"Microsoft Exchange Server\u306e\u653b\u6483\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u306e\u4e3b\u8981\u306a\u30a4\u30d9\u30f3\u30c8\u304c\u3053\u3053\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u30012020\u5e7412\u670810\u65e5\u304b\u3089\u59cb\u307e\u308b\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u3001\u3064\u307e\u308aDevCore\u306b\u3088\u308bProxyLogon\u3068\u3057\u3066\u77e5\u3089\u308c\u308b\u4e8b\u524d\u8a8d\u8a3c\u30d7\u30ed\u30ad\u30b7\u306e\u8106\u5f31\u6027\u306e\u767a\u898b\u304b\u3089\u3001\u73fe\u5728\u9032\u884c\u4e2d\u306e\u8106\u5f31\u6027\u306e\u60aa\u7528\u307e\u3067\u3092\u8ffd\u8de1\u3057\u305f\u3082\u306e\u3067\u3059\u3002\" width=\"900\" height=\"1261\" \/><\/a><figcaption id=\"caption-attachment-117460\" class=\"wp-caption-text\">\u56f31 \u30cf\u30a4\u30ec\u30d9\u30eb\u3067\u307f\u305f\u6d3b\u52d5\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3<\/figcaption><\/figure>\n<h2><a id=\"post-117434-_rnal71kpwao3\"><\/a>\u7d50\u8ad6<\/h2>\n<p>\u73fe\u5728\u9032\u884c\u4e2d\u306e\u8abf\u67fb\u306f\u3001\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u304c\u8907\u6570\u306e\u8105\u5a01\u30b0\u30eb\u30fc\u30d7\u306b\u3088\u3063\u3066\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u9ad8\u5ea6\u306a\u30b9\u30ad\u30eb\u3092\u6301\u3064\u653b\u6483\u8005\u304c\u3055\u307e\u3056\u307e\u306a\u88fd\u54c1\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306b\u307e\u305f\u304c\u308a\u3001\u65b0\u3057\u3044\u8106\u5f31\u6027\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u81ea\u4f53\u306f\u3001\u3068\u304f\u306b\u76ee\u65b0\u3057\u3044\u624b\u6cd5\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u8a8d\u8a3c\u30d0\u30a4\u30d1\u30b9\u306e\u305f\u3081\u306b\u3053\u308c\u3089\u306e\u653b\u6483\u3092\u5b9f\u884c\u3059\u308b\u624b\u6cd5\u306f\u3001\u305d\u308c\u3089\u304c\u3072\u3044\u3066\u306f\u96fb\u5b50\u30e1\u30fc\u30eb\u3078\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\uff08RCE\uff09\u306b\u3064\u306a\u304c\u308b\u3053\u3068\u304b\u3089\u3001\u7279\u306b\u60aa\u8cea\u306a\u3082\u306e\u3067\u3042\u308b\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n<p>Unit 42\u306f\u3001\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3057\u305f\u653b\u6483\u304c\u4eca\u5f8c\u3082\u7d9a\u304f\u3068\u3044\u3046\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u306e\u7bc4\u56f2\u304c\u62e1\u5927\u3057\u3066\u3044\u304f\u3053\u3068\u306b\u3064\u3044\u3066\u3001\u307e\u3063\u305f\u304f\u7591\u3044\u3092\u3044\u3060\u3044\u3066\u3044\u307e\u305b\u3093\u3002\u305d\u3057\u3066\u305d\u306e\u653b\u6483\u306e\u80cc\u5f8c\u306b\u306f\u3001\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u611f\u67d3\u3084\u914d\u5e03\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u52d5\u6a5f\u3092\u6301\u3064\u3088\u308a\u591a\u69d8\u306a\u653b\u6483\u304c\u5b58\u5728\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3057\u3001\u3055\u307e\u3056\u307e\u306a\u8105\u5a01\u30b0\u30eb\u30fc\u30d7\u304b\u3089\u6d3b\u767a\u306b\u653b\u6483\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30b7\u30b9\u30c6\u30e0\u306b\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u9069\u7528\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001Unit 42\u304c\u516c\u958b\u3057\u305f<a href=\"https:\/\/unit42.paloaltonetworks.jp\/remediation-steps-for-the-microsoft-exchange-server-vulnerabilities\/\">\u4fee\u5fa9\u306b\u95a2\u3059\u308b\u30d6\u30ed\u30b0<\/a>\u3067\u6982\u8aac\u3055\u308c\u3066\u3044\u308b\u30ac\u30a4\u30c0\u30f3\u30b9\u306b\u5f93\u3046\u3053\u3068\u3082\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h2><a id=\"post-117434-_nfc0ax4yccs2\"><\/a>\u8ffd\u52a0\u8cc7\u6599<\/h2>\n<ul>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/microsoft-exchange-server-vulnerabilities\/\">\u8105\u5a01\u306e\u8a55\u4fa1: Microsoft Exchange Server\u306b\u304a\u3051\u308b4\u3064\u306e\u30bc\u30ed\u30c7\u30a4\u8106\u5f31\u6027\u306e\u60aa\u7528\u304c\u6d3b\u767a\u5316<\/a><\/li>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/remediation-steps-for-the-microsoft-exchange-server-vulnerabilities\/\">Microsoft Exchange Server\u306e\u8106\u5f31\u6027\u306e\u4fee\u5fa9\u624b\u9806<\/a><\/li>\n<li><a href=\"https:\/\/blog.paloaltonetworks.com\/security-operations\/attacks-targeting-microsoft-exchange\/?lang=ja\">Microsoft Exchange Server\u3092\u6a19\u7684\u3068\u3057\u305f\u6700\u8fd1\u306e\u653b\u6483\u306e\u635c\u7d22<\/a><\/li>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/china-chopper-webshell\/\">China Chopper Web\u30b7\u30a7\u30eb\u3092\u4f7f\u7528\u3057\u305fMicrosoft Exchange Server\u306b\u5bfe\u3059\u308b\u653b\u6483\u306e\u5206\u6790<\/a><\/li>\n<li><a href=\"https:\/\/blog.paloaltonetworks.com\/2021\/03\/exchange-server-new-playbook\/\">Attackers Won\u2019t Stop With Exchange Server. You Need a New Playbook<\/a><\/li>\n<li><a href=\"https:\/\/www.microsoft.com\/security\/blog\/2021\/03\/02\/hafnium-targeting-exchange-servers\/\">HAFNIUM targeting Exchange Servers with 0-day exploits<\/a><\/li>\n<li><a href=\"https:\/\/www.volexity.com\/blog\/2021\/03\/02\/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities\/\">Operation Exchange Marauder: Active Exploitation of Multiple Zero-Day Microsoft Exchange Vulnerabilities<\/a><\/li>\n<li><a href=\"https:\/\/blog.rapid7.com\/2021\/03\/03\/mass-exploitation-of-exchange-server-zero-day-cves-what-you-need-to-know\/\">Mass Exploitation of Exchange Server Zero-Day CVEs: What You Need to Know<\/a><\/li>\n<li><a href=\"https:\/\/redcanary.com\/blog\/microsoft-exchange-attacks\/\">Microsoft Exchange Exploitation: How to detection, mitigate and stay calm<\/a><\/li>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/dearcry-ransomware\"><span style=\"font-weight: 400;\">\u8105\u5a01\u306e\u8a55\u4fa1: DearCry \u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2<\/span><\/a><\/li>\n<li><a href=\"https:\/\/blog.paloaltonetworks.com\/2021\/03\/patching-microsoft-exchange-servers\/\"><span style=\"font-weight: 400;\">How Quickly Are We Patching Microsoft Exchange Servers<\/span><\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 2021\u5e743\u67082\u65e5\u3001Microsoft Exchange Server\u306e\u8907\u6570\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b4\u3064\u306e\u91cd\u5927\u306a\u30bc\u30ed\u30c7\u30a4\u8106\u5f31\u6027\u304c\u4e00\u822c\u516c\u958b\u3055\u308c\u307e\u3057\u305f\uff08CVE-2021-26855\u3001CVE-2021-26857\u3001CV<\/p>\n","protected":false},"author":23,"featured_media":134314,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[4469,1974,4428,4470],"tags":[5075,6019,6023,6106,5085],"product_categories":[],"coauthors":[1025],"class_list":["post-117452","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vulnerabilities","category-malware-ja","category-threat-research-ja","category-vulnerabilities-ja","tag-cve-2021-26855-ja","tag-cve-2021-26857-ja","tag-cve-2021-27065-ja","tag-hafnium","tag-microsoft-exchange-server-ja"],"yoast_head":"<!-- This site is optimized with 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