{"id":1018,"date":"2026-11-12T23:50:14","date_gmt":"2026-11-12T15:50:14","guid":{"rendered":"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-34c6e1553baac87298d17ab52d3726a479b9a9fa956b10a084f822c461d477dd\/"},"modified":"2026-11-12T23:50:14","modified_gmt":"2026-11-12T15:50:14","slug":"pulsemate-security-34c6e1553baac87298d17ab52d3726a479b9a9fa956b10a084f822c461d477dd","status":"publish","type":"post","link":"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-34c6e1553baac87298d17ab52d3726a479b9a9fa956b10a084f822c461d477dd\/","title":{"rendered":"PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\u6df1\u5ea6\u5256\u6790\uff1aCVE-2026-116323 \u91cd\u5165\u5f0f UAF \u4e0e\u4efb\u610f\u4ee3\u7801\u6267\u884c\u94fe\u8def\u62c6\u89e3"},"content":{"rendered":"<blockquote class=\"doc-lead\"><p><strong>\u5bfc\u8bed\uff1a<\/strong>\u8fd9\u662f\u4e00\u6b21\u5178\u578b\u7684\u6570\u636e\u5e93\u5185\u6838\u5185\u5b58\u5b89\u5168\u4e8b\u4ef6\u2014\u2014PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e CVE-2026-116323\uff08CVSS 8.8\uff09\u5141\u8bb8\u5177\u5907\u5bf9\u8c61\u521b\u5efa\u6743\u9650\u7684\u653b\u51fb\u8005\uff0c\u501f\u52a9 domain CHECK \u7ea6\u675f\u91cd\u5165 Tcl \u89e3\u91ca\u5668\uff0c\u91ca\u653e\u5916\u5c42\u7ed3\u679c\u8f6c\u6362\u4ecd\u5728\u5f15\u7528\u7684\u5b57\u7b26\u4e32\uff0c\u6700\u7ec8\u4ee5\u6570\u636e\u5e93\u8fd0\u884c\u64cd\u4f5c\u7cfb\u7edf\u7528\u6237\u7684\u8eab\u4efd\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002\u4f5c\u4e3a\u957f\u671f\u8d1f\u8d23\u6570\u636e\u5e93\u5185\u6838\u4e0e\u5b89\u5168\u52a0\u56fa\u7684\u67b6\u6784\u5e08\uff0c\u6211\u8ba4\u4e3a\u5b83\u7684\u4ef7\u503c\u4e0d\u5728\u4e8e CVSS \u5206\u6570\uff0c\u800c\u5728\u4e8e\u5b83\u7cbe\u51c6\u66b4\u9732\u4e86\u201c\u6269\u5c55\u8bed\u8a00\u8fd0\u884c\u65f6 + \u7c7b\u578b\u7cfb\u7edf\u56de\u8c03\u201d\u8fd9\u4e00\u7ec4\u5408\u4e0b\u957f\u671f\u88ab\u5ffd\u89c6\u7684\u91cd\u5165\u8bed\u4e49\u7f3a\u53e3\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\">PostgreSQL PL\/Tcl \/ \u7c7b\u578b\u7cfb\u7edf\u56de\u8c03<\/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\">\u963b\u65ad RCE \u94fe\u8def \/ \u6d88\u9664 UAF \u5185\u5b58\u9690\u60a3<\/span><\/div>\n<\/div>\n<h2 class=\"doc-h2\">\u4e00\u3001PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\u7684\u4e8b\u4ef6\u5168\u666f<\/h2>\n<p class=\"doc-p\">\u6839\u636e GitHub Security Advisory\uff08GHSA-ccfq-qwmr-4cgg\uff09\u62ab\u9732\uff0c\u8be5\u95ee\u9898\u7f16\u53f7\u4e3a CVE-2026-116323\uff0c\u4e25\u91cd\u7ea7\u522b high\uff0cCVSS 3.x \u8bc4\u5206 8.8\uff0c\u5c5e\u4e8e\u5178\u578b\u7684\u201c\u9ad8\u6743\u9650\u524d\u7f6e + \u9ad8\u5f71\u54cd\u8f93\u51fa\u201d\u7ec4\u5408\u3002\u53d7\u5f71\u54cd\u7248\u672c\u8986\u76d6 PostgreSQL 18.7\u300117.12\u300116.16\u300115.20\u300114.25 \u4e4b\u524d\u7684\u5168\u90e8\u4e3b\u7ebf\u5206\u652f\uff0c\u610f\u5473\u7740\u4ece 14 \u5230 18 \u7684\u7edd\u5927\u591a\u6570\u751f\u4ea7\u96c6\u7fa4\u90fd\u5728\u5c04\u7a0b\u8303\u56f4\u5185\u3002<\/p>\n<p class=\"doc-p\">\u6f0f\u6d1e\u7684\u4e00\u53e5\u8bdd\u63cf\u8ff0\u975e\u5e38\u5173\u952e\uff1a<strong>\u201cUse after free in PostgreSQL pltcl allows an object creator to execute arbitrary code as the operating system user running the database, via a domain CHECK that re-enters the Tcl interpreter and frees or changes a string still used by the outer result conversion.\u201d<\/strong> \u8fd9\u53e5\u8bdd\u91cc\u5305\u542b\u4e86\u4e09\u4e2a\u5fc5\u987b\u88ab\u62c6\u5f00\u7406\u89e3\u7684\u6280\u672f\u8981\u7d20\uff1aPL\/Tcl \u7684\u7ed3\u679c\u8f6c\u6362\u8def\u5f84\u3001domain CHECK \u7ea6\u675f\u7684\u91cd\u5165\u80fd\u529b\u3001\u4ee5\u53ca\u5b57\u7b26\u4e32\u5bf9\u8c61\u5728\u91cd\u5165\u8fc7\u7a0b\u4e2d\u88ab\u91ca\u653e\u6216\u6539\u5199\u3002\u4e09\u8005\u53e0\u52a0\uff0c\u624d\u6784\u6210\u5b8c\u6574\u7684 PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u653b\u51fb\u9762\u3002<\/p>\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>\u4e0d\u8981\u628a\u8be5\u6f0f\u6d1e\u7b80\u5355\u5f52\u7c7b\u4e3a\u201c\u6269\u5c55\u8bed\u8a00\u7684\u5c0f bug\u201d\u3002\u5b83\u672c\u8d28\u4e0a\u662f\u6570\u636e\u5e93\u7c7b\u578b\u7cfb\u7edf\uff08domain \u7ea6\u675f\uff09\u4e0e\u5916\u90e8\u8bed\u8a00\u8fd0\u884c\u65f6\uff08Tcl \u89e3\u91ca\u5668\uff09\u4e4b\u95f4\u7684<strong>\u91cd\u5165\u5951\u7ea6\u7f3a\u5931<\/strong>\u3002\u4efb\u4f55\u5728\u7c7b\u578b\u8f6c\u6362\u56de\u8c03\u4e2d\u5141\u8bb8\u6267\u884c\u7528\u6237\u53ef\u63a7\u903b\u8f91\u7684\u8bbe\u8ba1\uff0c\u90fd\u5fc5\u987b\u91cd\u65b0\u5ba1\u89c6\u5176\u5185\u5b58\u751f\u547d\u5468\u671f\u5047\u8bbe\u3002<\/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> PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\u89e6\u53d1\u94fe\u8def\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[\"\u653b\u51fb\u8005\u4ee5\u5bf9\u8c61\u521b\u5efa\u8005\u8eab\u4efd\u53d1\u8d77\u8c03\u7528\"] --&gt; B[\"SQL \u51fd\u6570\u8c03\u7528\u8fdb\u5165 PL\/Tcl \u6267\u884c\u5668\"]\n    end\n    subgraph \u89c4\u5219\u5c42 [\"\u89c4\u5219\u7f16\u6392\u4e0e\u4e0a\u4e0b\u6587\u5c42 (Policy &amp; Context Tier)\"]\n        B --&gt; C[\"Tcl \u8fc7\u7a0b\u8fd4\u56de\u7ed3\u679c\u5b57\u7b26\u4e32\"]\n        C --&gt; D[\"\u7ed3\u679c\u8f6c\u6362\u51c6\u5907\u76ee\u6807\u7c7b\u578b (domain \u7c7b\u578b)\"]\n    end\n    subgraph \u9886\u57df\u5c42 [\"\u6838\u5fc3\u6267\u884c\u4e0e\u91cd\u5165\u5f15\u64ce (Core Reentry Tier)\"]\n        D --&gt; E[\"domain CHECK \u7ea6\u675f\u88ab\u89e6\u53d1\"]\n        E --&gt; F[\"CHECK \u8868\u8fbe\u5f0f\u91cd\u5165 Tcl \u89e3\u91ca\u5668\"]\n        F --&gt; G[\"\u5185\u5c42\u6267\u884c\u91ca\u653e\u6216\u6539\u5199\u5916\u5c42\u5b57\u7b26\u4e32\"]\n        G --&gt; H[\"\u5916\u5c42\u7ed3\u679c\u8f6c\u6362\u7ee7\u7eed\u8bfb\u53d6\u5df2\u91ca\u653e\u5185\u5b58 (UAF)\"]\n    end\n    subgraph \u5b58\u50a8\u5c42 [\"\u57fa\u7840\u8bbe\u65bd\u4e0e\u6267\u884c\u73af\u5883 (Infrastructure Tier)\"]\n        H --&gt; I[\"\u5806\u5185\u5b58\u88ab\u53ef\u63a7\u6570\u636e\u8986\u76d6\"]\n        I --&gt; J[\"\u4ee5\u6570\u636e\u5e93\u8fd0\u884c OS \u7528\u6237\u8eab\u4efd\u6267\u884c\u4efb\u610f\u4ee3\u7801\"]\n    end\n  <\/pre>\n<div class=\"doc-arch-caption\">\u56fe 1: PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\u4ece PL\/Tcl \u7ed3\u679c\u8f6c\u6362\u5230 domain CHECK \u91cd\u5165\u3001\u518d\u5230 UAF \u4e0e RCE \u7684\u5b8c\u6574\u94fe\u8def<\/div>\n<\/div>\n<h2 class=\"doc-h2\">\u4e8c\u3001PL\/Tcl \u7ed3\u679c\u8f6c\u6362\u4e0e domain CHECK \u91cd\u5165\u673a\u5236\u62c6\u89e3<\/h2>\n<h3 class=\"doc-h3\">2.1 PL\/Tcl \u7684\u7ed3\u679c\u8f6c\u6362\u8def\u5f84<\/h3>\n<p class=\"doc-p\">PL\/Tcl \u4f5c\u4e3a PostgreSQL \u7684\u8fc7\u7a0b\u8bed\u8a00\u6269\u5c55\uff0c\u5176\u6838\u5fc3\u5de5\u4f5c\u6a21\u5f0f\u662f\uff1a\u6570\u636e\u5e93\u8c03\u7528\u4e00\u4e2a\u7528 Tcl \u7f16\u5199\u7684\u51fd\u6570\uff0cTcl \u8fc7\u7a0b\u6267\u884c\u5b8c\u6bd5\u540e\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\uff08\u6216\u5b57\u7b26\u4e32\u5217\u8868\uff09\uff0cPostgreSQL \u518d\u901a\u8fc7\u7c7b\u578b\u8f93\u5165\u51fd\u6570\uff08type input function\uff09\u5c06\u5176\u8f6c\u6362\u4e3a\u76ee\u6807 SQL \u7c7b\u578b\u3002\u5bf9\u4e8e\u666e\u901a\u6807\u91cf\u7c7b\u578b\uff0c\u8fd9\u6761\u8def\u5f84\u76f8\u5bf9\u76f4\u63a5\uff1b\u4f46\u5f53\u76ee\u6807\u7c7b\u578b\u662f <code>domain<\/code> \u65f6\uff0c\u8f6c\u6362\u8fc7\u7a0b\u4f1a\u989d\u5916\u89e6\u53d1 domain \u7684\u7ea6\u675f\u68c0\u67e5\uff08CHECK \u7ea6\u675f\uff09\u3002<\/p>\n<p class=\"doc-p\">\u95ee\u9898\u5c31\u51fa\u5728\u8fd9\u4e2a\u201c\u989d\u5916\u89e6\u53d1\u201d\u4e0a\u3002domain CHECK \u7ea6\u675f\u7684\u8868\u8fbe\u5f0f\u672c\u8eab\u53ef\u4ee5\u8c03\u7528\u51fd\u6570\uff0c\u800c\u5728 PostgreSQL \u7684\u6743\u9650\u6a21\u578b\u4e2d\uff0c<strong>\u5bf9\u8c61\u521b\u5efa\u8005\uff08object creator\uff09\u53ef\u4ee5\u5728\u81ea\u5df1\u62e5\u6709\u7684 domain \u4e0a\u5b9a\u4e49 CHECK \u7ea6\u675f\uff0c\u5e76\u5728\u5176\u4e2d\u8c03\u7528\u81ea\u5df1\u62e5\u6709\u7684 PL\/Tcl \u51fd\u6570<\/strong>\u3002\u8fd9\u5c31\u4e3a\u201c\u5916\u5c42\u8f6c\u6362\u5c1a\u672a\u5b8c\u6210\u3001\u5185\u5c42\u903b\u8f91\u5df2\u7ecf\u91cd\u5165\u201d\u57cb\u4e0b\u4e86\u4f0f\u7b14\u3002<\/p>\n<h3 class=\"doc-h3\">2.2 \u91cd\u5165\u5982\u4f55\u51fb\u7a7f\u5185\u5b58\u751f\u547d\u5468\u671f\u5047\u8bbe<\/h3>\n<p class=\"doc-p\">\u5728\u6b63\u5e38\u7684\u975e\u91cd\u5165\u8def\u5f84\u4e2d\uff0cPL\/Tcl \u7ed3\u679c\u8f6c\u6362\u7684\u4ee3\u7801\u4f1a\u5047\u8bbe\uff1a\u4ece Tcl \u89e3\u91ca\u5668\u53d6\u51fa\u7684\u5b57\u7b26\u4e32\u6307\u9488\uff0c\u5728\u8f6c\u6362\u5b8c\u6210\u4e4b\u524d\u4fdd\u6301\u6709\u6548\u3002\u8fd9\u4e2a\u5047\u8bbe\u5728\u5355\u7ebf\u7a0b\u3001\u65e0\u56de\u8c03\u7684\u8bed\u5883\u4e0b\u6210\u7acb\u3002\u4f46 domain CHECK \u7684\u91cd\u5165\u6253\u7834\u4e86\u5b83\uff1a<\/p>\n<ul class=\"doc-list\">\n<li>\u5916\u5c42\uff1aPL\/Tcl \u62ff\u5230 Tcl \u8fd4\u56de\u7684\u5b57\u7b26\u4e32 S\uff0c\u51c6\u5907\u5c06\u5176\u8f6c\u6362\u4e3a domain \u7c7b\u578b\uff0c\u6301\u6709\u6307\u5411 S \u7684\u5f15\u7528\u3002<\/li>\n<li>\u5185\u5c42\uff1adomain CHECK \u8868\u8fbe\u5f0f\u88ab\u6c42\u503c\uff0c\u91cd\u5165 Tcl \u89e3\u91ca\u5668\uff0c\u6267\u884c\u653b\u51fb\u8005\u63a7\u5236\u7684 Tcl \u4ee3\u7801\u3002<\/li>\n<li>\u91ca\u653e\uff1a\u5185\u5c42\u4ee3\u7801\u901a\u8fc7 Tcl \u7684\u5b57\u7b26\u4e32\u7ba1\u7406\u673a\u5236\u91ca\u653e\u6216\u91cd\u65b0\u5206\u914d\u4e86 S \u6240\u5728\u7684\u5185\u5b58\u3002<\/li>\n<li>\u56de\u5f52\uff1a\u5916\u5c42\u8f6c\u6362\u7ee7\u7eed\u4f7f\u7528\u5df2\u7ecf\u5931\u6548\u7684 S \u6307\u9488\uff0c\u5f62\u6210\u5178\u578b\u7684 use-after-free\u3002<\/li>\n<\/ul>\n<p class=\"doc-p\">\u4e00\u65e6 UAF \u6210\u7acb\uff0c\u653b\u51fb\u8005\u5c31\u53ef\u4ee5\u901a\u8fc7\u7cbe\u5fc3\u6784\u9020\u7684 Tcl \u4ee3\u7801\u63a7\u5236\u88ab\u91ca\u653e\u5185\u5b58\u7684\u518d\u5206\u914d\u5185\u5bb9\uff0c\u5c06\u51fd\u6570\u6307\u9488\u6216\u5173\u952e\u6570\u636e\u7ed3\u6784\u8986\u76d6\u4e3a\u53ef\u63a7\u503c\uff0c\u4ece\u800c\u5728\u6570\u636e\u5e93\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u4e2d\u5b9e\u73b0\u4efb\u610f\u4ee3\u7801\u6267\u884c\u3002\u7531\u4e8e PostgreSQL \u540e\u7aef\u8fdb\u7a0b\u4ee5\u6570\u636e\u5e93\u8fd0\u884c\u7528\u6237\uff08\u901a\u5e38\u662f <code>postgres<\/code>\uff09\u8eab\u4efd\u8fd0\u884c\uff0c\u653b\u51fb\u8005\u83b7\u5f97\u7684\u6b63\u662f\u8be5\u64cd\u4f5c\u7cfb\u7edf\u7528\u6237\u7684\u6743\u9650\u3002<\/p>\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>\u5f88\u591a\u56e2\u961f\u4f1a\u8ba4\u4e3a\u201c\u53ea\u6709\u8d85\u7ea7\u7528\u6237\u624d\u80fd\u521b\u5efa PL\/Tcl \u51fd\u6570\uff0c\u6240\u4ee5\u98ce\u9669\u53ef\u63a7\u201d\u3002\u4f46\u8be5\u6f0f\u6d1e\u660e\u786e\u6307\u5411 <strong>object creator<\/strong>\uff1a\u5728\u5141\u8bb8\u666e\u901a\u4e1a\u52a1\u8d26\u53f7\u521b\u5efa domain\u3001\u521b\u5efa\u51fd\u6570\u3001\u5e76\u88ab\u6388\u4e88 PL\/Tcl \u4f7f\u7528\u6743\u9650\u7684\u591a\u79df\u6237\u6216 SaaS \u573a\u666f\u4e2d\uff0c\u653b\u51fb\u9762\u4f1a\u88ab\u663e\u8457\u653e\u5927\u3002\u8bf7\u7acb\u5373\u5ba1\u8ba1 <code>pg_language<\/code> \u4e2d pltcl \u7684 ACL \u4e0e domain \u521b\u5efa\u6743\u9650\u7684\u6388\u4e88\u60c5\u51b5\u3002<\/div>\n<h2 class=\"doc-h2\">\u4e09\u3001\u5f71\u54cd\u8303\u56f4\u4e0e\u7248\u672c\u77e9\u9635<\/h2>\n<p class=\"doc-p\">\u5b98\u65b9\u4fee\u590d\u8986\u76d6\u4e86\u4e94\u4e2a\u4e3b\u7ebf\u5206\u652f\u3002\u5bf9\u4e8e\u4ecd\u5728\u4f7f\u7528 14 \u53ca\u66f4\u65e9\u7248\u672c\u3001\u6216\u5df2\u7ecf EOL \u7684\u96c6\u7fa4\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\uff1a\u8fd9\u4e9b\u7248\u672c\u4e0d\u4f1a\u83b7\u5f97\u8865\u4e01\uff0c\u552f\u4e00\u7684\u51fa\u8def\u662f\u5347\u7ea7\u5230\u53d7\u652f\u6301\u7684\u4e3b\u7ebf\u7248\u672c\u3002<\/p>\n<div class=\"doc-table-wrapper\">\n<table class=\"doc-table\">\n<thead>\n<tr>\n<th>\u4e3b\u7ebf\u7248\u672c<\/th>\n<th>\u53d7\u5f71\u54cd\u7248\u672c<\/th>\n<th>\u4fee\u590d\u7248\u672c<\/th>\n<th>\u5904\u7f6e\u5efa\u8bae<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PostgreSQL 18<\/td>\n<td>&lt; 18.7<\/td>\n<td>18.7<\/td>\n<td><span class=\"badge-tag-green\">\u7acb\u5373\u5347\u7ea7<\/span><\/td>\n<\/tr>\n<tr>\n<td>PostgreSQL 17<\/td>\n<td>&lt; 17.12<\/td>\n<td>17.12<\/td>\n<td><span class=\"badge-tag-green\">\u7acb\u5373\u5347\u7ea7<\/span><\/td>\n<\/tr>\n<tr>\n<td>PostgreSQL 16<\/td>\n<td>&lt; 16.16<\/td>\n<td>16.16<\/td>\n<td><span class=\"badge-tag-green\">\u7acb\u5373\u5347\u7ea7<\/span><\/td>\n<\/tr>\n<tr>\n<td>PostgreSQL 15<\/td>\n<td>&lt; 15.20<\/td>\n<td>15.20<\/td>\n<td><span class=\"badge-tag-green\">\u7acb\u5373\u5347\u7ea7<\/span><\/td>\n<\/tr>\n<tr>\n<td>PostgreSQL 14<\/td>\n<td>&lt; 14.25<\/td>\n<td>14.25<\/td>\n<td><span class=\"badge-tag-green\">\u7acb\u5373\u5347\u7ea7<\/span><\/td>\n<\/tr>\n<tr>\n<td>PostgreSQL \u2264 13<\/td>\n<td>\u5168\u90e8<\/td>\n<td>\u65e0<\/td>\n<td><span class=\"badge-tag-red\">\u89c4\u5212\u8fc1\u79fb<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 class=\"doc-h2\">\u56db\u3001PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\u7684\u5de5\u7a0b\u5316\u52a0\u56fa\u65b9\u6848<\/h2>\n<h3 class=\"doc-h3\">4.1 \u7b2c\u4e00\u4f18\u5148\u7ea7\uff1a\u7248\u672c\u5347\u7ea7<\/h3>\n<p class=\"doc-p\">\u5bf9\u4e8e PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u8fd9\u7c7b\u5185\u6838\u5185\u5b58\u5b89\u5168\u6f0f\u6d1e\uff0c\u5347\u7ea7\u662f\u552f\u4e00\u5f7b\u5e95\u7684\u4fee\u590d\u624b\u6bb5\u3002\u5efa\u8bae\u91c7\u7528\u6eda\u52a8\u5347\u7ea7\u7b56\u7565\uff0c\u5148\u5728\u53ea\u8bfb\u526f\u672c\u4e0a\u9a8c\u8bc1\uff0c\u518d\u5207\u6362\u4e3b\u5e93\u3002\u4ee5\u4e0b\u4e3a\u57fa\u4e8e\u5305\u7ba1\u7406\u5668\u7684\u5347\u7ea7\u547d\u4ee4\u793a\u4f8b\uff0c\u8bf7\u6309\u5b9e\u9645\u53d1\u884c\u7248\u8c03\u6574\u3002<\/p>\n<details class=\"doc-accordion\">\n<summary>\u70b9\u51fb\u5c55\u5f00\uff1aDebian\/Ubuntu \u4e0e RHEL \u7cfb\u5347\u7ea7\u547d\u4ee4\u4e0e\u9a8c\u8bc1\u811a\u672c<\/summary>\n<div class=\"doc-accordion-content\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"upgrade-postgresql.sh\"># Debian \/ Ubuntu (PGDG \u6e90)\nsudo apt update\nsudo apt install --only-upgrade postgresql-16 postgresql-client-16\n\n# RHEL \/ Rocky \/ AlmaLinux\nsudo dnf update postgresql16-server postgresql16-libs\n\n# \u9a8c\u8bc1\u7248\u672c\npsql -c \"SELECT version();\"\n\n# \u68c0\u67e5 pltcl \u6269\u5c55\u662f\u5426\u5b89\u88c5\u53ca ACL\npsql -c \"SELECT lanname, lanacl FROM pg_language WHERE lanname LIKE 'pltcl%';\"<\/pre>\n<\/p><\/div>\n<\/details>\n<h3 class=\"doc-h3\">4.2 \u7b2c\u4e8c\u4f18\u5148\u7ea7\uff1a\u6536\u7f29 PL\/Tcl \u4e0e domain \u7684\u653b\u51fb\u9762<\/h3>\n<p class=\"doc-p\">\u5728\u65e0\u6cd5\u7acb\u5373\u5347\u7ea7\u7684\u7a97\u53e3\u671f\uff0c\u5e94\u901a\u8fc7\u6743\u9650\u6536\u655b\u964d\u4f4e\u53ef\u5229\u7528\u6027\u3002\u6838\u5fc3\u601d\u8def\u662f\uff1a<strong>\u4e0d\u8ba9\u975e\u53d7\u4fe1\u89d2\u8272\u540c\u65f6\u5177\u5907\u201c\u521b\u5efa domain + \u521b\u5efa\u51fd\u6570 + \u4f7f\u7528 pltcl\u201d\u8fd9\u4e09\u9879\u80fd\u529b<\/strong>\u3002<\/p>\n<div class=\"baota-config-bar\"><span>REVOKE USAGE ON LANGUAGE pltcl FROM PUBLIC;<\/span><span class=\"lang-tag\">SQL<\/span><\/div>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-title=\"harden-pltcl.sql\">-- 1. \u56de\u6536 PUBLIC \u5bf9 pltcl \u7684\u4f7f\u7528\u6743\u9650\nREVOKE USAGE ON LANGUAGE pltcl FROM PUBLIC;\nREVOKE USAGE ON LANGUAGE pltclu FROM PUBLIC;\n\n-- 2. \u5ba1\u8ba1\u5f53\u524d\u62e5\u6709 pltcl \u4f7f\u7528\u6743\u9650\u7684\u89d2\u8272\nSELECT r.rolname\nFROM pg_language l, aclexplode(l.lanacl) a, pg_roles r\nWHERE l.lanname = 'pltcl' AND a.grantee = r.oid;\n\n-- 3. \u5ba1\u8ba1\u4e1a\u52a1 schema \u4e2d domain \u7684\u521b\u5efa\u6743\u9650\nSELECT n.nspname, has_schema_privilege('app_user', n.oid, 'CREATE') AS can_create\nFROM pg_namespace n\nWHERE n.nspname NOT LIKE 'pg_%' AND n.nspname &lt;&gt; 'information_schema';<\/pre>\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>\u82e5\u4f60\u7684\u4e1a\u52a1\u786e\u5b9e\u4f9d\u8d56 PL\/Tcl\uff08\u4f8b\u5982\u5386\u53f2\u9057\u7559\u7684 Tcl \u5b58\u50a8\u8fc7\u7a0b\uff09\uff0c\u5728\u5347\u7ea7\u524d\u8bf7\u52ff\u8d38\u7136 REVOKE\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u4e1a\u52a1\u51fd\u6570\u8c03\u7528\u5931\u8d25\u3002\u6b63\u786e\u987a\u5e8f\u662f\uff1a\u5148\u76d8\u70b9\u4f9d\u8d56 \u2192 \u5efa\u7acb\u4e13\u7528\u4f4e\u6743\u9650\u89d2\u8272\u627f\u8f7d pltcl \u51fd\u6570 \u2192 \u518d\u56de\u6536 PUBLIC \u6743\u9650 \u2192 \u6700\u540e\u5347\u7ea7\u5185\u6838\u3002\u4efb\u4f55\u4e00\u6b65\u8df3\u8fc7\u90fd\u53ef\u80fd\u5f15\u53d1\u751f\u4ea7\u4e8b\u6545\u3002<\/p><\/div>\n<h3 class=\"doc-h3\">4.3 \u7b2c\u4e09\u4f18\u5148\u7ea7\uff1a\u8fd0\u884c\u65f6\u68c0\u6d4b\u4e0e\u76d1\u63a7<\/h3>\n<p class=\"doc-p\">UAF \u7c7b\u6f0f\u6d1e\u5728\u5229\u7528\u9636\u6bb5\u5f80\u5f80\u4f34\u968f\u5f02\u5e38\u7684\u5185\u5b58\u5206\u914d\u6a21\u5f0f\u4e0e\u540e\u7aef\u8fdb\u7a0b\u5d29\u6e83\u3002\u5efa\u8bae\u5728\u6570\u636e\u5e93\u4fa7\u5f00\u542f <code>log_min_error_statement<\/code> \u5e76\u91c7\u96c6\u540e\u7aef\u8fdb\u7a0b\u7684 core dump \u4fe1\u53f7\uff08SIGSEGV\/SIGABRT\uff09\uff0c\u540c\u65f6\u7ed3\u5408 pg_stat_activity \u5bf9\u957f\u65f6\u95f4\u8fd0\u884c\u7684 Tcl \u51fd\u6570\u8c03\u7528\u8fdb\u884c\u544a\u8b66\u3002\u5bf9\u4e8e\u9ad8\u5b89\u5168\u7b49\u7ea7\u73af\u5883\uff0c\u53ef\u8003\u8651\u5728\u6570\u636e\u5e93\u8fdb\u7a0b\u5916\u5c42\u90e8\u7f72 seccomp \u6216 AppArmor \u7b56\u7565\uff0c\u9650\u5236 <code>postgres<\/code> \u7528\u6237\u7684 execve \u80fd\u529b\uff0c\u4f5c\u4e3a RCE \u7684\u6700\u540e\u4e00\u9053\u7eb5\u6df1\u9632\u5fa1\u3002<\/p>\n<h2 class=\"doc-h2\">\u4e94\u3001\u67b6\u6784\u5c42\u9762\u7684\u957f\u671f\u53cd\u601d<\/h2>\n<p class=\"doc-p\">\u8fd9\u5df2\u7ecf\u4e0d\u662f PostgreSQL \u6269\u5c55\u8bed\u8a00\u7b2c\u4e00\u6b21\u56e0\u91cd\u5165\u95ee\u9898\u8fdb\u5165\u5b89\u5168\u516c\u544a\u3002\u4ece\u67b6\u6784\u89c6\u89d2\u770b\uff0cPL\/Tcl\u3001PL\/Perl\u3001PL\/Python \u8fd9\u7c7b\u201c\u5d4c\u5165\u5f0f\u89e3\u91ca\u5668\u201d\u5929\u7136\u5f15\u5165\u4e86<strong>\u63a7\u5236\u6d41\u91cd\u5165<\/strong>\u4e0e<strong>\u5185\u5b58\u6240\u6709\u6743\u8de8\u8fb9\u754c<\/strong>\u4e24\u4e2a\u96be\u9898\u3002\u7c7b\u578b\u7cfb\u7edf\u7684\u8f93\u5165\/\u8f93\u51fa\u51fd\u6570\u3001domain \u7ea6\u675f\u3001\u89e6\u53d1\u5668\u3001\u4ee5\u53ca\u4e8b\u4ef6\u89e6\u53d1\u5668\uff0c\u90fd\u662f\u6f5c\u5728\u7684\u91cd\u5165\u5165\u53e3\u3002\u771f\u6b63\u7a33\u5065\u7684\u8bbe\u8ba1\u5e94\u5f53\u5728\u6269\u5c55\u8bed\u8a00\u8fb9\u754c\u5904\u5f15\u5165\u663e\u5f0f\u7684\u201c\u7ed3\u679c\u5feb\u7167\u201d\u8bed\u4e49\uff1a\u5728\u8fdb\u5165\u4efb\u4f55\u53ef\u80fd\u56de\u8c03\u7528\u6237\u4ee3\u7801\u7684\u8def\u5f84\u4e4b\u524d\uff0c\u5148\u5c06\u7ed3\u679c\u5b57\u7b26\u4e32\u590d\u5236\u5230\u7531 PostgreSQL \u5185\u5b58\u4e0a\u4e0b\u6587\uff08MemoryContext\uff09\u72ec\u7acb\u7ba1\u7406\u7684\u5185\u5b58\u4e2d\uff0c\u4ece\u6839\u672c\u4e0a\u5207\u65ad\u5916\u5c42\u5f15\u7528\u4e0e\u5185\u5c42\u91ca\u653e\u4e4b\u95f4\u7684\u8026\u5408\u3002<\/p>\n<p class=\"doc-p\">\u5bf9\u4e8e\u4f7f\u7528 PostgreSQL pltcl \u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\u4f5c\u4e3a\u5b89\u5168\u57fa\u7ebf\u68c0\u67e5\u9879\u7684\u56e2\u961f\uff0c\u5efa\u8bae\u5c06\u201c\u6269\u5c55\u8bed\u8a00\u6743\u9650\u5ba1\u8ba1\u201d\u548c\u201cdomain \u7ea6\u675f\u56de\u8c03\u5ba1\u8ba1\u201d\u7eb3\u5165\u5e38\u89c4\u7684\u6570\u636e\u5e93\u5b89\u5168\u8bc4\u5ba1\u6e05\u5355\uff0c\u800c\u4e0d\u662f\u7b49\u5230\u4e0b\u4e00\u4e2a CVE \u51fa\u73b0\u624d\u88ab\u52a8\u54cd\u5e94\u3002<\/p>\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-34a42891bacfddbf424fc73e662f882758087fc6ca26c2e5dc5d06bc8cd8fe2a\/\">hMailServer \u7f16\u7801\u6df7\u6dc6\u6f0f\u6d1e\u6df1\u5ea6\u590d\u76d8\uff1aLatin-1 \u4e0e UTF-8 \u6587\u4ef6\u540d\u89e3\u6790\u9519\u4f4d\u5982\u4f55\u51fb\u7a7f Windows TLS \u4fe1\u4efb\u94fe<\/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-9f7db533d13949eb815dacbf7d6338d76778382d1e040edda3b4cff0d409f74b\/\">Node.js HTTP\/2 \u65ad\u8a00\u5d29\u6e83\u6f0f\u6d1e\u6df1\u5ea6\u5256\u6790\uff1aCVE-2026-123863 \u4f1a\u8bdd\u62c6\u9664\u5185\u5b58\u8bb0\u8d26\u9003\u9038\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 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