{"id":127654,"date":"2021-03-15T19:45:41","date_gmt":"2021-03-16T02:45:41","guid":{"rendered":"https:\/\/www.paloaltonetworks.com\/blog\/?p=127654"},"modified":"2021-03-15T19:45:41","modified_gmt":"2021-03-16T02:45:41","slug":"exchange-server-4-remediation","status":"publish","type":"post","link":"https:\/\/www2.paloaltonetworks.com\/blog\/2021\/03\/exchange-server-4-remediation\/?lang=zh-hant","title":{"rendered":"Exchange Server\u96f6\u6642\u5dee\u6f0f\u6d1e\u653b\u64caPalo Alto Networks\u63d0\u51fa\u56db\u62db\u9632\u7bc4"},"content":{"rendered":"<p style=\"font-weight: 400;\">\u5fae\u8edfExchange Server\u96fb\u5b50\u90f5\u4ef6\u4f3a\u670d\u5668\u8fd1\u671f\u88ab\u767c\u73fe\u4e864\u500b\u91cd\u5927\u96f6\u6642\u5dee\u6f0f\u6d1e\uff08CVE-2021-26855\u3001CVE-2021-26857\u3001\u00a0CVE-2021-26858\u00a0\u53ca\u00a0CVE-2021-27065\uff09\u3002\u9019\u4e9b\u6f0f\u6d1e\u4f7f\u653b\u64ca\u8005\u53ef\u4ee5\u9577\u671f\u5229\u7528Exchange Server\u6f0f\u6d1e\u9032\u884c\u653b\u64ca\u3002\u5fae\u8edf\u5a01\u8105\u60c5\u5831\u4e2d\u5fc3\uff08MSTIC\uff09\u5c07\u9019\u4e9b\u653b\u64ca\u4ee5\u300c\u9ad8\u53ef\u4fe1\u5ea6\u300d\u8a8d\u5b9a\u70baHAFNUIM\u99ed\u5ba2\u7d44\u7e54\uff0c\u4ed6\u5011\u8a55\u4f30HAFNUIM\u662f\u7531\u4e2d\u570b\u8cc7\u52a9\u4e26\u5728\u4e2d\u570b\u4ee5\u5916\u71df\u904b\u7684\u7d44\u7e54\u3002\u5305\u62ecMSTIC\u548cUnit 42\u5728\u5167\u7684\u591a\u500b\u5a01\u8105\u60c5\u5831\u5718\u968a\u4e5f\u767c\u73fe\u591a\u500b\u7db2\u8def\u653b\u64ca\u8005\u73fe\u6b63\u5229\u7528\u9019\u4e9b\u96f6\u6642\u5dee\u6f0f\u6d1e\u4f5c\u653b\u64ca\u3002<\/p>\n<p style=\"font-weight: 400;\">\u5728\u5168\u7403\uff0c\u9810\u4f30\u53d7\u5230\u6b64\u7db2\u8def\u653b\u64ca\u7684\u4f01\u696d\u6578\u4ee5\u842c\u8a08\uff0c\u66f4\u91cd\u8981\u7684\u662f\uff0c\u5728\u767c\u4f48\u6f0f\u6d1e\u4fee\u88dc\u4e4b\u524d\uff0c\u653b\u64ca\u8005\u5df2\u7d93\u5145\u5206\u5229\u7528\u9019\u4e9b\u6f0f\u6d1e\u81f3\u5c11\u5169\u500b\u6708\u7684\u6642\u9593\u3002\u6839\u64da\u5f9ePalo Alto Networks Expanse\u5e73\u53f0\u6536\u96c6\u7684\u9059\u6e2c\u6578\u64da\uff0cPalo Alto Networks\u4f30\u8a08\u4e16\u754c\u4e0a\u4ecd\u7136\u6709\u8d85\u904e125,000\u53f0\u672a\u4fee\u88dc\u6f0f\u6d1e\u7684Exchange Servers\uff0cPalo Alto Networks\u65e5\u524d\u4e5f\u516c\u4f48\u76ee\u524d\u5075\u6e2c\u5230\u7684\u5728\u53f0\u7063\u767c\u73fe\u7d04\u6709950\u500bExchange Server\u96f6\u6642\u5dee\u6f0f\u6d1e\u5a01\u8105\u3002<\/p>\n<p style=\"font-weight: 400;\"><strong>Palo Alto Networks<\/strong><strong>\u5efa\u8b70\u4f01\u696d\u9075\u5faa\u4ee5\u4e0b\u65b9\u6cd5\u4f86\u61c9\u5c0d\u5176\u74b0\u5883\u4e2d\u96f6\u6642\u5dee\u6f5b\u5728\u5a01\u8105\uff1a<\/strong><\/p>\n<ol style=\"font-weight: 400;\">\n<li><strong>\u627e\u5230\u6240\u6709Exchange Server\uff0c\u78ba\u5b9a\u662f\u5426\u9700\u8981\u4fee\u88dc\u6f0f\u6d1e\uff1a<\/strong><\/li>\n<\/ol>\n<p style=\"font-weight: 400;\">\u6709\u6f0f\u6d1e\u7684Exchange Server\u7248\u672c\u5305\u62ec2013\u5e74\u7248\u672c\u30012016\u5e74\u7248\u672c\u548c2019\u5e74\u7248\u672c\u3002\u96d6\u7136Exchange 2010\u4e0d\u53d7Exchange 2013\/2016\/2019\u5e74\u76f8\u540c\u7684\u653b\u64ca\u93c8\u7684\u653b\u64ca\uff0cMicrosoft\u4ecd\u70ba\u6b64\u7248\u672c\u7684\u8edf\u4ef6\u767c\u4f48\u4e86CVE-2021-26857\u7684<a href=\"https:\/\/urldefense.proofpoint.com\/v2\/url?u=https-3A__support.microsoft.com_en-2Dus_topic_description-2Dof-2Dthe-2Dsecurity-2Dupdate-2Dfor-2Dmicrosoft-2Dexchange-2Dserver-2D2010-2Dservice-2Dpack-2D3-2Dmarch-2D2-2D2021-2Dkb5000978-2D894f27bf-2D281e-2D44f8-2Db9ba-2Ddad705534459&amp;d=DwMF-g&amp;c=V9IgWpI5PvzTw83UyHGVSoW3Uc1MFWe5J8PTfkrzVSo&amp;r=rlV3QLKXfVd47fRPwA7WrCCSjqFsgIzvhSPB3-jJ4YQ&amp;m=kfd-OwXNIOFypEKxupBpIFjIDhAFeXt2ABGu2YLNLic&amp;s=sNZ98hHRSmpsHknQshLcMecDkjjlFRT3jg7jHSHQGJ8&amp;e=\" rel=\"nofollow,noopener\"  data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/urldefense.proofpoint.com\/v2\/url?u%3Dhttps-3A__support.microsoft.com_en-2Dus_topic_description-2Dof-2Dthe-2Dsecurity-2Dupdate-2Dfor-2Dmicrosoft-2Dexchange-2Dserver-2D2010-2Dservice-2Dpack-2D3-2Dmarch-2D2-2D2021-2Dkb5000978-2D894f27bf-2D281e-2D44f8-2Db9ba-2Ddad705534459%26d%3DDwMF-g%26c%3DV9IgWpI5PvzTw83UyHGVSoW3Uc1MFWe5J8PTfkrzVSo%26r%3DrlV3QLKXfVd47fRPwA7WrCCSjqFsgIzvhSPB3-jJ4YQ%26m%3Dkfd-OwXNIOFypEKxupBpIFjIDhAFeXt2ABGu2YLNLic%26s%3DsNZ98hHRSmpsHknQshLcMecDkjjlFRT3jg7jHSHQGJ8%26e%3D&amp;source=gmail&amp;ust=1615947845187000&amp;usg=AFQjCNEzWFfRtIOK9pmaSEKpQeasSu4BUg\">\u4fee\u88dc<\/a>\u3002Microsoft\u6700\u8fd1\u767c\u4f48\u4e86\u91dd\u5c0d\u8f03\u820a\u4e5f\u4e0d\u53d7\u652f\u63f4\u7684Exchange\u7248\u672c\u7684<a href=\"https:\/\/urldefense.proofpoint.com\/v2\/url?u=https-3A__techcommunity.microsoft.com_t5_exchange-2Dteam-2Dblog_march-2D2021-2Dexchange-2Dserver-2Dsecurity-2Dupdates-2Dfor-2Dolder-2Dcumulative_ba-2Dp_2192020&amp;d=DwMF-g&amp;c=V9IgWpI5PvzTw83UyHGVSoW3Uc1MFWe5J8PTfkrzVSo&amp;r=rlV3QLKXfVd47fRPwA7WrCCSjqFsgIzvhSPB3-jJ4YQ&amp;m=kfd-OwXNIOFypEKxupBpIFjIDhAFeXt2ABGu2YLNLic&amp;s=Qgsb4E_lyN0WakAOwhQavE9-Dp4eFSqPHNNDSfq31r8&amp;e=\" rel=\"nofollow,noopener\"  data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/urldefense.proofpoint.com\/v2\/url?u%3Dhttps-3A__techcommunity.microsoft.com_t5_exchange-2Dteam-2Dblog_march-2D2021-2Dexchange-2Dserver-2Dsecurity-2Dupdates-2Dfor-2Dolder-2Dcumulative_ba-2Dp_2192020%26d%3DDwMF-g%26c%3DV9IgWpI5PvzTw83UyHGVSoW3Uc1MFWe5J8PTfkrzVSo%26r%3DrlV3QLKXfVd47fRPwA7WrCCSjqFsgIzvhSPB3-jJ4YQ%26m%3Dkfd-OwXNIOFypEKxupBpIFjIDhAFeXt2ABGu2YLNLic%26s%3DQgsb4E_lyN0WakAOwhQavE9-Dp4eFSqPHNNDSfq31r8%26e%3D&amp;source=gmail&amp;ust=1615947845187000&amp;usg=AFQjCNG8JwFDPZitXA57cUlSIeGjyp-D5A\">\u984d\u5916\u6307\u5357<\/a>\u3002<\/p>\n<p style=\"font-weight: 400;\">\u5fae\u8edf\u4e5f\u5efa\u8b70\u66f4\u65b0\u6240\u6709\u7684Exchange Server\uff0c\u4e26\u512a\u5148\u8003\u616e\u5c0d\u5916\u7db2\u8def\u7684\u66f4\u65b0\u3002\u5373\u4f7f\u4f01\u696d\u767c\u73feExchange Server\u4e0d\u662f\u7528\u4f86\u5c0d\u5916\u7db2\u8def\u70ba\u4e3b\u7684\u8def\u5f91\uff0c\u5982\u679c\u900f\u904e\u5176\u4ed6\u5916\u90e8\u7db2\u8def\uff0c\u653b\u64ca\u8005\u4ecd\u7136\u53ef\u4ee5\u5229\u7528\u9019\u4e9b\u6f0f\u6d1e\u3002<\/p>\n<p style=\"padding-left: 40px;\"><strong>2. \u4fee\u88dc\u4e26\u4fdd\u8b77\u4f01\u696d\u6240\u6709\u7684Exchange Server<\/strong><strong>\uff1a<\/strong><\/p>\n<p style=\"font-weight: 400;\">\u5982\u679c\u4e0d\u80fd\u7acb\u5373\u66f4\u65b0\u6216\u4fee\u88dcExchange Server\uff0c\u6709\u4e00\u4e9b<a href=\"https:\/\/urldefense.proofpoint.com\/v2\/url?u=https-3A__msrc-2Dblog.microsoft.com_2021_03_05_microsoft-2Dexchange-2Dserver-2Dvulnerabilities-2Dmitigations-2Dmarch-2D2021_&amp;d=DwMF-g&amp;c=V9IgWpI5PvzTw83UyHGVSoW3Uc1MFWe5J8PTfkrzVSo&amp;r=rlV3QLKXfVd47fRPwA7WrCCSjqFsgIzvhSPB3-jJ4YQ&amp;m=kfd-OwXNIOFypEKxupBpIFjIDhAFeXt2ABGu2YLNLic&amp;s=JOv6J-Ws7Dq0znLq4OdSNaNwnYxLUshHMlNvsgJC830&amp;e=\" rel=\"nofollow,noopener\"  data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/urldefense.proofpoint.com\/v2\/url?u%3Dhttps-3A__msrc-2Dblog.microsoft.com_2021_03_05_microsoft-2Dexchange-2Dserver-2Dvulnerabilities-2Dmitigations-2Dmarch-2D2021_%26d%3DDwMF-g%26c%3DV9IgWpI5PvzTw83UyHGVSoW3Uc1MFWe5J8PTfkrzVSo%26r%3DrlV3QLKXfVd47fRPwA7WrCCSjqFsgIzvhSPB3-jJ4YQ%26m%3Dkfd-OwXNIOFypEKxupBpIFjIDhAFeXt2ABGu2YLNLic%26s%3DJOv6J-Ws7Dq0znLq4OdSNaNwnYxLUshHMlNvsgJC830%26e%3D&amp;source=gmail&amp;ust=1615947845187000&amp;usg=AFQjCNEoa711_68Q54OdtgSJzyS1jYZ8rg\">\u7de9\u89e3\u63aa\u65bd\u548c\u89e3\u6c7a\u65b9\u6848<\/a>\u53ef\u80fd\u6703\u6e1b\u5c11\u653b\u64ca\u8005\u5229\u7528Exchange Server\u7684\u6a5f\u6703\uff0c\u9019\u4e9b\u7de9\u89e3\u63aa\u65bd\u61c9\u8a72\u53ea\u662f\u66ab\u6642\u7684\uff0c\u76f4\u5230\u6f0f\u6d1e\u88ab\u4fee\u88dc\u5b8c\u6210\u3002\u5982\u679cExchange Server\u7684\u5165\u7ad9\u6d41\u91cf\u555f\u7528\u4e86SSL\u89e3\u5bc6\uff0c\u5df2\u66f4\u65b0\u70ba<a href=\"https:\/\/www.paloaltonetworks.com\/products\/secure-the-network\/subscriptions\/threat-prevention\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.paloaltonetworks.com\/products\/secure-the-network\/subscriptions\/threat-prevention&amp;source=gmail&amp;ust=1615947845187000&amp;usg=AFQjCNG8M13E52wDpdFqJNIdvdEb3I1gtQ\">Threat Prevention Content Pack 8380<\/a>\u6216\u66f4\u9ad8\u7248\u672c\u7684Palo Alto Networks<a href=\"https:\/\/www.paloaltonetworks.com\/network-security\/next-generation-firewall\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.paloaltonetworks.com\/network-security\/next-generation-firewall&amp;source=gmail&amp;ust=1615947845187000&amp;usg=AFQjCNGT1QhaHtMNK_Av_bMr1q3_KmdzXA\">\u65b0\u4e16\u4ee3\u9632\u706b\u7246\uff08NGFW\uff09<\/a>\u53ef\u4ee5\u9632\u6b62\u9019\u4e9b\u6f0f\u6d1e\u3002\u5728Exchange Server\u4e0a\u904b\u884c\u7684<a href=\"https:\/\/www.paloaltonetworks.com\/cortex\/cortex-xdr\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.paloaltonetworks.com\/cortex\/cortex-xdr&amp;source=gmail&amp;ust=1615947845187000&amp;usg=AFQjCNG-L91NIXbcnOlrGIdfD0FWwbYZ6A\">Cortex XDR<\/a>\u5c07\u6aa2\u6e2c\u4e26\u963b\u6b62\u9019\u4e9b\u653b\u64ca\u4e2d\u5e38\u7528\u7684webshell\u6d3b\u52d5\u3002<\/p>\n<p style=\"font-weight: 400;\">\u521d\u59cb\u653b\u64ca\u9700\u8981\u5177\u6709\u8207Exchange Server\u7db2\u8def\u57e0443\u7684\u4e0d\u53d7\u4fe1\u4efb\u7684\u9023\u63a5\u80fd\u529b\u3002\u53ef\u4ee5\u900f\u904e\u9650\u5236\u4e0d\u53d7\u4fe1\u4efb\u7684\u4f7f\u7528\u8005\u5c0d\u7cfb\u7d71\u7684\u9023\u63a5\u4f86\u9632\u6b62\u9019\u7a2e\u60c5\u6cc1\u7684\u767c\u751f\u3002\u6216\u50c5\u5141\u8a31VPN\u9032\u884c\u8eab\u4efd\u9a57\u8b49\u7684\u4f7f\u7528\u8005\u9023\u63a5\u7cfb\u7d71\u6216\u900f\u904e\u4f7f\u7528\u9632\u706b\u7246\u5c07\u9023\u63a5\u9650\u5236\u8a2d\u70ba\u5c0d\u7279\u5b9a\u4e3b\u6a5f\u6216IP\u7bc4\u570d\u7684\u9023\u63a5\u4f86\u9032\u884c\u3002\u4f7f\u7528\u6b64\u63aa\u65bd\u50c5\u80fd\u9632\u79a6\u653b\u64ca\u7684\u521d\u59cb\u90e8\u5206\u3002\u5982\u679c\u653b\u64ca\u8005\u5df2\u7d93\u53ef\u4ee5\u9023\u63a5\u7db2\u8def\u6216\u8005\u53ef\u4ee5\u8aaa\u670d\u7ba1\u7406\u54e1\u6253\u958b\u60e1\u610f\u6587\u4ef6\uff0c\u5247\u4ecd\u7136\u53ef\u4ee5\u89f8\u767c\u653b\u64ca\u93c8\u7684\u5176\u4ed6\u90e8\u5206\u3002<\/p>\n<p style=\"font-weight: 400;\">\u6709\u95dc\u4f7f\u7528Palo Alto Networks\u7522\u54c1\u7684\u66f4\u591a\u8a0a\u606f\uff0c\u5305\u62ec\u8a02\u95b1\u5b89\u5168\u9632\u706b\u7246\uff0c\u7528\u65bc\u81ea\u52d5\u5316\u7684Cortex XSOAR\u548c\u7528\u65bc\u7aef\u9ede\u4fdd\u8b77\u7684Cortex XDR\uff0c\u53ef\u4ee5\u5728\u6211\u5011\u7684<a href=\"https:\/\/unit42.paloaltonetworks.com\/microsoft-exchange-server-vulnerabilities\/\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/unit42.paloaltonetworks.com\/microsoft-exchange-server-vulnerabilities\/&amp;source=gmail&amp;ust=1615947845187000&amp;usg=AFQjCNHcIP3S3ieq5iT2-lQfQ98BAyPxPw\">\u5a01\u8105\u8a55\u4f30\u9801\u9762<\/a>\u4e2d\u627e\u5230\u3002<\/p>\n<p style=\"padding-left: 40px;\"><strong>3. \u78ba\u5b9aExchange Server<\/strong><strong>\u662f\u5426\u5df2\u7d93\u53d7\u5230\u5a01\u8105<\/strong><strong>\uff1a<\/strong><\/p>\n<p style=\"font-weight: 400;\">\u9019\u4e9b\u6f0f\u6d1e\u5df2\u7d93\u6c3e\u6feb\u6210\u707d\uff0c\u4e26\u88ab\u7a4d\u6975\u5229\u7528\u4e86\u8d85\u904e\u4e00\u500b\u6708\uff0c\u6700\u65e9\u7684\u8de1\u8c61\u986f\u793a\u9019\u500b\u6f0f\u6d1e\u53ef\u4ee5\u8ffd\u6eaf\u52301\u67083\u65e5\u3002\u4efb\u4f55\u4f7f\u7528\u9019\u4e9b\u5bb9\u6613\u53d7\u99ed\u5ba2\u653b\u64ca\u7684\u7d44\u7e54\u90fd\u5fc5\u9808\u8a55\u4f30\u5176\u4f3a\u670d\u5668\u662f\u5426\u53d7\u5230\u5a01\u8105\u3002\u4fee\u88dc\u7cfb\u7d71\u4e26\u4e0d\u6703\u522a\u9664\u5df2\u90e8\u7f72\u5728\u7cfb\u7d71\u4e0a\u7684\u4efb\u4f55\u60e1\u610f\u8edf\u9ad4\u3002<\/p>\n<p style=\"font-weight: 400;\">Palo Alto Networks Unit 42\u5a01\u8105\u5831\u544a\u6307\u51faExchange Server\u653b\u64ca\u7684\u6700\u521d\u884c\u52d5\u8005\u4f7f\u7528\u7684\u6230\u8853\u3001\u6280\u8853\u8207\u7a0b\u5e8f\uff08TTP\uff1btactics, techniques and procedures\uff09\u5305\u62ec\uff1a<\/p>\n<ul>\n<li style=\"font-weight: 400;\">\u4f7f\u75287-Zip\u5c07\u7aca\u53d6\u7684\u6578\u64da\u58d3\u7e2e\u5230ZIP\u6587\u4ef6\u4e2d\u4ee5\u9032\u884c\u6ef2\u900f\u3002<\/li>\n<li style=\"font-weight: 400;\">\u6dfb\u52a0\u4e26\u4f7f\u7528Exchange PowerShell\u7ba1\u7406\u55ae\u5143\u5c0e\u51fa\u90f5\u4ef6\u4fe1\u7bb1\u6578\u64da\u3002<\/li>\n<li style=\"font-weight: 400;\">\u4f7f\u7528Nishang Invoke-PowerShellTcpOneLine\u53cd\u5411\u5916\u6bbc\u3002<\/li>\n<li style=\"font-weight: 400;\">\u5f9eGitHub\u4e0b\u8f09PowerCat\uff0c\u7136\u5f8c\u4f7f\u7528\u5b83\u6253\u958b\u8207\u9060\u7a0b\u670d\u52d9\u5668\u7684\u9023\u63a5\u3002<\/li>\n<\/ul>\n<p style=\"padding-left: 40px;\"><strong>4.\u5982\u679c\u906d\u53d7\u5230\u653b\u64ca\uff0c\u8acb\u8207\u8cc7\u5b89\u4e8b\u4ef6\u61c9\u8b8a\u5c0f\u7d44\u806f\u7e6b\uff1a<\/strong><\/p>\n<p style=\"font-weight: 400;\">\u5982\u679cExchange 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