{"id":692,"date":"2026-06-19T04:37:41","date_gmt":"2026-06-19T04:37:41","guid":{"rendered":"https:\/\/hyc.eshachem.com\/program\/?page_id=692"},"modified":"2026-06-19T07:20:59","modified_gmt":"2026-06-19T07:20:59","slug":"xss%e6%94%bb%e6%93%8a","status":"publish","type":"page","link":"https:\/\/hyc.eshachem.com\/program\/%e7%b6%b2%e9%a0%81%e6%8a%80%e8%a1%93%e8%88%87%e8%b3%87%e5%ae%89\/xss%e6%94%bb%e6%93%8a\/","title":{"rendered":"4. XSS\u653b\u64ca"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u4e86\u89e3\u4e86\u5982\u4f55\u512a\u5316\u6211\u5011\u7684\u7cfb\u7d71\u5f8c\uff0c\u770b\u4f3c\u5df2\u7d93\u5805\u4e0d\u53ef\u6467\u3002\u4f46\u512a\u5316\u67b6\u69cb\u5145\u5176\u91cf\u53ea\u662f\u63d0\u9ad8\u6548\u80fd\uff0c\u9019\u5f88\u660e\u986f\u4e0d\u662f\u99ed\u5ba2\u4e0d\u653b\u64ca\u4f60\u7684\u539f\u56e0\uff0c\u5728\u9ad8\u6548\u80fd\u7684\u7cfb\u7d71\u5982\u679c\u7cfb\u7d71\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u99ed\u5ba2\u9084\u662f\u80fd\u8f15\u6613\u7e5e\u904e\u6240\u6709\u7684\u9632\u7dda !!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u7bc7\u5c31\u4f86\u804a\u804a\uff0c\u87ec\u806f\u7db2\u9801\u5b89\u5168\u6f0f\u6d1e\u6392\u884c\u699c\uff08OWASP Top 10\uff09\u591a\u5e74\u7684\u982d\u865f\u6bba\u624b\u2014\u2014<strong>XSS \u653b\u64ca\uff08Cross-Site Scripting\uff0c\u8de8\u7db2\u7ad9\u6307\u4ee4\u78bc\u653b\u64ca\uff09<\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e7%b0%a1%e4%bb%8b\">\u7c21\u4ecb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">XSS \u7684\u6838\u5fc3\u539f\u7406\u975e\u5e38\u7c21\u55ae\uff1a<strong>\u300c\u501f\u5200\u6bba\u4eba\u300d<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u99ed\u5ba2\u5229\u7528\u7db2\u7ad9\u5c0d\u4f7f\u7528\u8005\u8f38\u5165\u5167\u5bb9\u7f3a\u4e4f\u6aa2\u67e5\u7684\u6f0f\u6d1e\uff0c\u5c07\u60e1\u610f\u6307\u4ee4\uff08<strong>JavaScript \u7a0b\u5f0f\u78bc<\/strong>\uff09\u6ce8\u5165\u5230\u7db2\u9801\u4e2d\u3002\u56e0\u70ba\u700f\u89bd\u5668\u4e0d\u6703\u6aa2\u67e5\u4e0b\u8f09\u4e0b\u4f86\u7684JS\uff0c\u56e0\u6b64\u7576\u5176\u4ed6\u7121\u8f9c\u7684\u4f7f\u7528\u8005\u700f\u89bd\u9019\u500b\u7db2\u9801\u6642\uff0c\u700f\u89bd\u5668\u5c31\u6703\u4e56\u4e56\u57f7\u884c\u9019\u6bb5\u60e1\u610f\u6307\u4ee4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u5c0f\u6bb5\u60e1\u610f JS \u7a0b\u5f0f\u78bc\u80fd\u505a\u4ec0\u9ebc\uff1f\u5b83\u80fd\u5077\u8d70\u4f7f\u7528\u8005\u7684 Cookie\uff08\u4ee3\u8868\u4f60\u7684\u767b\u5165\u72c0\u614b\uff09\u3001\u76dc\u5237\u4fe1\u7528\u5361\uff0c\u751a\u81f3\u76f4\u63a5\u7ac4\u6539\u7db2\u9801\u5167\u5bb9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">XSS \u653b\u64ca\u4f9d\u64da\u60e1\u610f\u7a0b\u5f0f\u78bc\u300c\u85cf\u5728\u54ea\u88e1\u300d\uff0c\u4e3b\u8981\u5206\u70ba\u4e09\u5927\u6d41\u6d3e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/hyc.eshachem.com\/program\/wp-content\/uploads\/2026\/06\/Gemini_Generated_Image_knye41knye41knye-1024x559.png\" alt=\"\" class=\"wp-image-707\" srcset=\"https:\/\/hyc.eshachem.com\/program\/wp-content\/uploads\/2026\/06\/Gemini_Generated_Image_knye41knye41knye-1024x559.png 1024w, https:\/\/hyc.eshachem.com\/program\/wp-content\/uploads\/2026\/06\/Gemini_Generated_Image_knye41knye41knye-300x164.png 300w, https:\/\/hyc.eshachem.com\/program\/wp-content\/uploads\/2026\/06\/Gemini_Generated_Image_knye41knye41knye-768x419.png 768w, https:\/\/hyc.eshachem.com\/program\/wp-content\/uploads\/2026\/06\/Gemini_Generated_Image_knye41knye41knye.png 1408w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"stored-xss\">Stored XSS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5132\u5b58\u578bXSS<\/strong>\uff0c\u9019\u662f<strong>\u7834\u58de\u529b\u6700\u5f37\u3001\u5f71\u97ff\u7bc4\u570d\u6700\u5ee3<\/strong>\u7684 XSS \u985e\u578b\u3002\u9867\u540d\u601d\u7fa9\uff0c\u5132\u5b58\u578bXSS\u5c31\u662f\u5c07\u4e00\u6bb5\u60e1\u610f\u6307\u4ee4\uff0c\u76f4\u63a5\u5132\u5b58\u5728\u4f3a\u670d\u5668\u4e2d\uff0c\u53ea\u8981\u6709\u4eba\u8a66\u5716\u8abf\u7528\u4f3a\u670d\u5668\u7684\u5167\u5bb9\u5c31\u6703\u89f8\u767c\u6307\u4ee4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u99ed\u5ba2\u6703\u5728\u7db2\u7ad9\u7684\u7559\u8a00\u677f\u3001\u8a55\u8ad6\u5340\u6216\u500b\u4eba\u7c21\u4ecb\u4e2d\uff0c\u8f38\u5165\u4e00\u6bb5\u60e1\u610f\u7a0b\u5f0f\u78bc\uff08\u5982\uff1a<code>&lt;script&gt;\u5077Cookie\u7684\u7a0b\u5f0f\u78bc&lt;\/script&gt;<\/code>\uff09\uff0c\u7136\u5f8c\u6309\u4e0b\u9001\u51fa\u3002\u9019\u6bb5\u60e1\u610f\u7a0b\u5f0f\u78bc\u7a7f\u904e Web Server\uff0c\u88ab<strong>\u6c38\u4e45\u5132\u5b58\u5230\u4e86\u5f8c\u7aef\u7684\u8cc7\u6599\u5eab\uff08Database\uff09\u5009\u5eab\u88e1<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f9e\u6b64\u4ee5\u5f8c\uff0c\u53ea\u8981\u6709\u4efb\u4f55\u4eba\uff08Client\uff09\u9ede\u9032\u9019\u500b\u7559\u8a00\u677f\uff0cApplication Server \u5c31\u6703\u5f9e\u8cc7\u6599\u5eab\u628a\u9019\u6bb5\u6709\u6bd2\u7684\u7559\u8a00\u6488\u51fa\u4f86\u3001\u56de\u50b3\u7d66\u700f\u89bd\u5668\u3002\u700f\u89bd\u5668\u4e0d\u77e5\u9053\u6709\u6bd2\uff0c\u7576\u5834\u57f7\u884c\uff0c\u767b\u5165\u6191\u8b49\u7b49\u77ac\u9593\u88ab\u99ed\u5ba2\u5077\u8d70\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"reflected-xss\">Reflected XSS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u53cd\u5c04\u578bXSS<\/strong>\uff0c\u9019\u7a2e\u653b\u64ca<strong>\u4e0d\u6703<\/strong>\u628a\u8cc7\u6599\u5b58\u9032\u8cc7\u6599\u5eab\uff0c\u800c\u662f\u50cf\u8ff4\u529b\u93e2\u4e00\u6a23\uff0c\u9ede\u4e0b\u53bb\u7684\u77ac\u9593\u7acb\u523b\u53cd\u5c04\u56de\u4f86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u73fe\u4ee3\u7db2\u7ad9\u901a\u5e38\u90fd\u6703\u6709\u4e00\u500b\u641c\u5c0b\u529f\u80fd\uff0c\u5be6\u73fe\u300c\u641c\u5c0b\u300d\u9019\u4ef6\u4e8b\uff0c\u901a\u5e38\u662f\u5c0d\u5f8c\u7aef\u767c\u8d77\u5e36\u53c3\u6578\u7684GET\uff0c\u5047\u5982\u4f60\u5728google\u4e2d\u641c\u5c0b\u8c93\u54aa\u5716\u7247\uff0cClient\u5be6\u969b\u6703\u5411google\u7684\u4f3a\u670d\u5668\u767c\u9001\u4e00\u6bb5GET\u8acb\u6c42\uff0c\u9577\u9019\u6a23\uff1a<a href=\"https:\/\/www.google.com\/search?q=%E8%B2%93%E5%92%AA+%E5%9C%96%E7%89%87&amp;oq=%E8%B2%93%E5%92%AA+%E5%9C%96%E7%89%87&amp;gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIGCAEQABgeMgYIAhAAGB4yBggDEAAYHjIGCAQQABgeMgYIBRAAGB4yBggGEAAYHjIGCAcQABgeMgYICBAAGB4yBggJEAAYHtIBCTUwNTVqMGoxNagCALACAA&amp;sourceid=chrome&amp;ie=UTF-8\"><code>https:\/\/www.google.com\/search?q=\u8c93\u54aa+\u5716\u7247<\/code><\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8070\u660e\u7684\u99ed\u5ba2\u4fbf\u60f3\u5230\u5c07\u95dc\u9375\u5b57\u6539\u6210\u4e00\u6bb5\u4ee3\u78bc\uff0c\u7d44\u88dd\u6210\u4e00\u500b\u60e1\u610f\u9023\u7d50\uff1a<code><a href=\"https:\/\/www.google.com\/search?q=\">https:\/\/www.google.com\/search?q=<\/a>&lt;script&gt;\u60e1\u610f\u7a0b\u5f0f&lt;\/script&gt;<\/code>\uff0c\u9019\u500b Request \u5e36\u8457\u6709\u6bd2\u7684\u53c3\u6578\u885d\u5411 Web Server\uff0cApplication Server \u6c92\u591a\u60f3\uff0c\u76f4\u63a5\u5728 Response \u4e2d\u628a\u9019\u500b\u95dc\u9375\u5b57\u5410\u56de\u7d66\u700f\u89bd\u5668\uff1a\u300c\u60a8\u641c\u5c0b\u7684\u95dc\u9375\u5b57\u662f <code>&lt;script&gt;\u60e1\u610f\u7a0b\u5f0f&lt;\/script&gt;<\/code>\u300d\u3002\u700f\u89bd\u5668\u4e00\u8b80\u5230\uff0c\u7576\u5834\u7576\u4f5c\u6307\u4ee4\u57f7\u884c\uff0c\u53d7\u5bb3\u8005\u5728\u4e0d\u77e5\u4e0d\u89ba\u4e2d\u88ab\u653b\u64ca\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"dom-based-xss\">DOM-based XSS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DOM \u578bXSS<\/strong>\uff0c<strong>\u5b8c\u5168\u767c\u751f\u5728\u300c\u4f7f\u7528\u8005\u7684\u700f\u89bd\u5668\uff08\u524d\u7aef\uff09\u300d\u5167\u90e8\uff0c\u5b8c\u5168\u4e0d\u6703\u78b0\u5230\u5f8c\u7aef Server <\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u6a23\u662f\u8a98\u9a19\u4f7f\u7528\u8005\u9ede\u64ca\u60e1\u610f\u7db2\u5740\uff1a<a href=\"https:\/\/www.google.com\/search?q=&lt;script&gt;%E6%83%A1%E6%84%8F%E7%A8%8B%E5%BC%8F&lt;\/script&gt;\">https:\/\/www.google.com\/search?q=&lt;script&gt;\u60e1\u610f\u7a0b\u5f0f&lt;\/script&gt;<\/a> \uff0c\u4f46\u9019\u4e00\u6b21\uff0c\u524d\u7aef\u7db2\u9801\u7684 JavaScript \u7a0b\u5f0f\u78bc\u5beb\u5f97\u4e0d\u5920\u5b89\u5168\uff0c\u5982\u679c\u88e1\u9762\u6709\u4e00\u6bb5\u5beb\u6cd5\u662f\uff1a\u300c\u76f4\u63a5\u8b80\u53d6\u7db2\u5740\u5217 <code>#<\/code> \u5f8c\u9762\u7684\u6587\u5b57\uff0c\u4e26\u7528 <code>document.write()<\/code> \u5beb\u9032\u7db2\u9801\u756b\u9762\u4e0a\u300d\uff0c\u7576\u7db2\u9801\u8f09\u5165\u6642\uff0c\u700f\u89bd\u5668\u5167\u90e8\u7684 JS \u5f15\u64ce\u5728\u89e3\u6790\u7db2\u9801\uff08DOM\uff09\u7684\u904e\u7a0b\u4e2d\uff0c\u81ea\u5df1\u53bb\u6293\u7db2\u5740\u5217\u7684\u75c5\u6bd2\u5b57\u4e32\uff0c\u7136\u5f8c\u81ea\u5df1\u52d5\u624b\u628a\u60e1\u610f\u7a0b\u5f0f\u78bc\u585e\u9032\u4e86 DOM \u6a39\u88e1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u7a2e\u653b\u64ca\u7684\u7279\u6027\u662f\u5b83\u662f\u5c6c\u65bc\u7d14\u524d\u7aef\u6f0f\u6d1e\uff0c\u5f8c\u7aef\u9632\u79a6\u5b8c\u5168\u9632\u4e0d\u5230\u5b83\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e9%98%b2%e7%af%84%e6%8e%aa%e6%96%bd\">\u9632\u7bc4\u63aa\u65bd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9762\u5c0d\u9019\u4e09\u7a2e\u7121\u5b54\u4e0d\u5165\u7684 JS \u6bd2\u7d20\uff0c\u8eab\u70ba\u7db2\u9801\u958b\u767c\u8005\uff0c\u9664\u4e86<strong>\u907f\u514d\u4f7f\u7528 innerHTML<\/strong> \uff0c\u6539\u7528 <code>textContent<\/code> \u6216 DOMPurify\u4e4b\u5916\uff0c\u6211\u5011\u9084\u80fd\u600e\u9ebc\u9632\u79a6\u5462?<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"%e5%b0%8d%e4%bd%bf%e7%94%a8%e8%80%85%e7%9a%84%e8%bc%b8%e5%85%a5%e3%80%8c%e5%be%b9%e5%ba%95%e4%b8%8d%e4%bf%a1%e4%bb%bb%e3%80%8d%ef%bc%88input-validation-sanitization%ef%bc%89\">\u5c0d\u4f7f\u7528\u8005\u7684\u8f38\u5165\u300c\u5fb9\u5e95\u4e0d\u4fe1\u4efb\u300d\uff08Input Validation &amp; Sanitization\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u8ad6\u524d\u7aef\u9084\u662f\u5f8c\u7aef\uff0c\u6536\u5230\u4f7f\u7528\u8005\u50b3\u4f86\u7684\u4efb\u4f55\u8cc7\u6599\uff08\u7559\u8a00\u3001\u641c\u5c0b\u5b57\u8a5e\uff09\uff0c\u90fd\u8981\u9032\u884c\u904e\u6ffe\u6216\u963b\u64cb\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9ed1\u540d\u55ae\u9650\u5236<\/strong>\uff1a\u53ea\u8981\u767c\u73fe\u8f38\u5165\u5167\u5bb9\u5305\u542b <code>&lt;script&gt;<\/code>\u3001<code>javascript:<\/code> \u7b49\u654f\u611f\u5b57\u773c\uff0c\u76f4\u63a5\u62d2\u7d55\u63a5\u6536\u3002<\/li>\n\n\n\n<li><strong>\u4f7f\u7528\u77e5\u540d\u5957\u4ef6\u5957\u4ef6\uff08\u5982 DOMPurify\uff09<\/strong>\uff1a\u5728\u8cc7\u6599\u8981\u5b58\u9032\u8cc7\u6599\u5eab\u6216\u6e32\u67d3\u5230\u524d\u7aef\u524d\uff0c\u5148\u7528\u5c08\u9580\u7684\u5de5\u5177\u628a\u5371\u96aa\u7684 HTML \u6a19\u7c64\u8207\u5c6c\u6027\u5fb9\u5e95\u300c\u6d17\u4e7e\u6de8\u300d\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"%e5%85%a8%e9%9d%a2%e5%ad%97%e5%85%83%e8%b7%b3%e8%84%ab%ef%bc%88html-entity-encoding%ef%bc%89-%e6%9c%80%e6%a0%b8%e5%bf%83%e7%9a%84%e7%b5%95%e6%8b%9b\">\u5168\u9762\u5b57\u5143\u8df3\u812b\uff08HTML Entity Encoding\uff09\u2014\u2014 \u6700\u6838\u5fc3\u7684\u7d55\u62db<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u700f\u89bd\u5668\u4e4b\u6240\u4ee5\u6703\u4e2d\u6bd2\uff0c\u662f\u56e0\u70ba\u5b83\u628a\u4f7f\u7528\u8005\u8f38\u5165\u7684 <code>&lt;<\/code> \u548c <code>&gt;<\/code> \u8aa4\u7576\u6210\u4e86 HTML \u6a19\u7c64\u6307\u4ee4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u5011\u53ea\u8981\u628a\u9019\u4e9b\u7279\u6b8a\u7b26\u865f\uff0c\u8f49\u63db\u6210\u300c\u7d14\u6587\u5b57\u7684\u5316\u8eab\uff08HTML \u5be6\u9ad4\u7de8\u78bc\uff09\u300d\u5373\u53ef\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c07 <code>&lt;<\/code> \u8f49\u63db\u70ba <code>&amp;lt;<\/code><\/li>\n\n\n\n<li>\u5c07 <code>&gt;<\/code> \u8f49\u63db\u70ba <code>&amp;gt;<\/code><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576\u700f\u89bd\u5668\u770b\u5230 <code>&amp;lt;script&amp;gt;<\/code> \u6642\uff0c<strong>JS \u5f15\u64ce\u5c31\u4e0d\u6703\u628a\u5b83\u7576\u6210\u7a0b\u5f0f\u78bc\u57f7\u884c<\/strong>\uff0c\u800c\u662f\u628a\u5b83\u7576\u4f5c\u4e00\u822c\u7684\u6587\u5b57\u300c\u5b57\u4e32\u300d\uff0c\u539f\u5c01\u4e0d\u52d5\u5730\u5728\u756b\u9762\u4e0a\u986f\u793a\u51fa <code>&lt;script&gt;<\/code> \u7684\u5b57\u6a23\u3002\u9019\u62db\u80fd\u77ac\u9593\u8b93 99% \u7684 Stored \u548c Reflected XSS \u5931\u53bb\u6b66\u529f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"%e4%bf%9d%e8%ad%b7%e9%97%9c%e9%8d%b5-cookie-%e9%96%8b%e5%95%9f-httponly-%e6%97%97%e6%a8%99\">\u4fdd\u8b77\u95dc\u9375 Cookie \u2014 \u958b\u555f <code>HttpOnly<\/code> \u65d7\u6a19<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u99ed\u5ba2\u5927\u8cbb\u5468\u7ae0\u6253\u5165 XSS\uff0c\u6700\u4e3b\u8981\u7684\u76ee\u7684\u5c31\u662f\u7528 <code>document.cookie<\/code> \u53bb\u5077\u4f7f\u7528\u8005\u7684\u767b\u5165\u6b0a\u6756\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u89e3\u6cd5<\/strong>\uff1a\u5f8c\u7aef\u4f3a\u670d\u5668\u5728\u767c\u653e\u654f\u611f\u7684 Session Cookie \u6642\uff0c\u5fc5\u9808\u5728 Header \u4e2d\u52a0\u4e0a <code>; HttpOnly<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u6548\u679c<\/strong>\uff1a\u4e00\u65e6\u958b\u555f\uff0c<strong>\u700f\u89bd\u5668\u7684 JavaScript \u5c31\u6703\u88ab\u5fb9\u5e95\u525d\u596a\u8b80\u53d6\u8a72 Cookie \u7684\u6b0a\u9650<\/strong>\u3002\u5c31\u7b97\u99ed\u5ba2\u6210\u529f\u767c\u52d5\u4e86 XSS \u653b\u64ca\u3001\u5728\u7db2\u9801\u88e1\u585e\u4e86\u60e1\u610f\u4ee3\u78bc\uff0c\u4e5f\u7d55\u5c0d\u5077\u4e0d\u8d70\u4f60\u7684\u767b\u5165\u72c0\u614b\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"%e8%a8%ad%e5%ae%9a%e5%85%a7%e5%ae%b9%e5%ae%89%e5%85%a8%e6%94%bf%e7%ad%96%ef%bc%88csp-content-security-policy%ef%bc%89\">\u8a2d\u5b9a\u5167\u5bb9\u5b89\u5168\u653f\u7b56\uff08CSP, Content Security Policy\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u662f\u5728 HTTP \u56de\u61c9\u6a19\u982d\uff08Response Header\uff09\u4e2d\u52a0\u5165\u7684\u6700\u9ad8\u5b89\u5168\u6307\u5c0e\u539f\u5247\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u958b\u767c\u8005\u53ef\u4ee5\u544a\u8a34\u700f\u89bd\u5668\uff1a\u300c\u9019\u500b\u7db2\u9801<strong>\u53ea\u5141\u8a31<\/strong>\u4e0b\u8f09\u4e26\u57f7\u884c\u4f86\u81ea <code>google.com<\/code> \u6216\u662f\u6211\u5011\u81ea\u5df1\u7db2\u57df\u7684 JS \u6a94\u6848\u3002\u5982\u679c\u767c\u73fe\u7db2\u9801\u88e1\u6709\u4f86\u8def\u4e0d\u660e\u3001\u6216\u8005\u662f\u4f7f\u7528\u8005\u81ea\u5df1\u8cbc\u5728\u7559\u8a00\u677f\u4e0a\u7684 inline JS \u7a0b\u5f0f\u78bc\uff0c\u4e00\u5f8b\u5f37\u5236\u5c01\u9396\u4e0d\u51c6\u57f7\u884c\uff01\u300d<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e5%95%8f\">\u554f!<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Q\uff1a\u5728\u73fe\u4ee3\u7db2\u9801\u958b\u767c\u4e2d\uff08\u4f8b\u5982\u4f7f\u7528 React \u6216 Next.js \u6846\u67b6\uff09\uff0c\u5982\u679c\u6211\u5011\u76f4\u63a5\u5728\u756b\u9762\u986f\u793a\u8b8a\u6578\uff1a<code>&lt;div&gt;{userInput}&lt;\/div&gt;<\/code>\uff0cReact \u6703\u81ea\u52d5\u5e6b\u6211\u5011\u505a\u597d\u300cHTML \u8df3\u812b\uff08Encoding\uff09\u300d\uff0c\u8b93 XSS \u96e3\u4ee5\u5f97\u901e\u3002\u4f46 React \u537b\u4fdd\u7559\u4e86\u4e00\u500b\u540d\u5b57\u5f88\u53ef\u6015\u7684\u8a9e\u6cd5\u53eb\u505a <code>dangerouslySetInnerHTML<\/code>\u3002\u8acb\u7d50\u5408\u672c\u7ae0\u6240\u5b78\uff0c\u601d\u8003\u70ba\u4ec0\u9ebc\u9019\u500b\u8a9e\u6cd5\u6703\u88ab\u51a0\u4e0a\u300cdangerously\uff08\u5371\u96aa\uff09\u300d\u7684\u5b57\u773c\uff1f\u5982\u679c\u975e\u7528\u5b83\u4e0d\u53ef\uff0c\u5de5\u7a0b\u5e2b\u8a72\u505a\u597d\u4ec0\u9ebc\u6e96\u5099\uff1f<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7b54\u6848\u5f15\u5c0e\u5efa\u8b70<\/strong>\uff1a\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u5371\u96aa\u539f\u56e0<\/strong>\uff1a\u56e0\u70ba\u9019\u500b\u8a9e\u6cd5\u6703\u8df3\u904e React \u5167\u5efa\u7684\u9632\u79a6\u6a5f\u5236\uff0c\u5c07\u4f7f\u7528\u8005\u8f38\u5165\u7684\u5b57\u4e32\u300c\u6beb\u7121\u4fdd\u7559\u3001\u539f\u6c41\u539f\u5473\u300d\u5730\u7576\u4f5c HTML \u6307\u4ee4\u76f4\u63a5\u585e\u9032 DOM \u6a39\u4e2d\u3002\u5982\u679c <code>userInput<\/code> \u88e1\u85cf\u6709\u60e1\u610f\u7a0b\u5f0f\u78bc\uff0c\u5c31\u6703\u7576\u5834\u5f15\u7206 <strong>DOM \u578b\u6216\u5132\u5b58\u578b XSS \u653b\u64ca<\/strong>\u3002<\/li>\n\n\n\n<li><strong>\u9632\u7bc4\u6e96\u5099<\/strong>\uff1a\u5982\u679c\u696d\u52d9\u9700\u6c42\u975e\u5f97\u6e32\u67d3\u5bcc\u6587\u672c\uff08\u5982\u90e8\u843d\u683c\u7de8\u8f2f\u5668\u8f38\u51fa\u7684 HTML\uff09\uff0c\u5728\u5c07\u8cc7\u6599\u50b3\u5165 <code>dangerouslySetInnerHTML<\/code> \u4e4b\u524d\uff0c\u5de5\u7a0b\u5e2b\u5fc5\u9808<strong>\u7d55\u5c0d\u78ba\u4fdd<\/strong>\u8a72\u8cc7\u6599\u5df2\u7d93\u904e <code>DOMPurify<\/code> \u7b49\u5feb\u53d6\/\u6d17\u6ecc\u5957\u4ef6\u904e\u6ffe\uff0c\u5c07\u5371\u96aa\u7684\u6307\u4ee4\u6a19\u7c64\u5fb9\u5e95\u6e05\u9664\u3002<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e7%b7%b4%e7%bf%92\">\u7df4\u7fd2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u662f\u770b\u770b\u7576\u99ed\u5ba2\u662f\u4ec0\u9ebc\u611f\u89ba\u5427 (?)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> <a href=\"https:\/\/xss-game.appspot.com\/\">XSS Game<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e5%b0%8f%e7%b5%90\">\u5c0f\u7d50<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e86\u89e3\u4e86\u7db2\u9801\u6548\u80fd\u518d\u9ad8\uff0c\u4e5f\u96e3\u9632\u300c <strong>XSS\uff08\u8de8\u7db2\u7ad9\u6307\u4ee4\u78bc\u653b\u64ca\uff09<\/strong><strong>\u5c07\u60e1\u610f JavaScript \u7a0b\u5f0f\u78bc\u507d\u88dd\u6210\u6b63\u5e38\u8cc7\u6599<\/strong>\uff0c\u501f\u700f\u89bd\u5668\u7684\u624b\u4f86\u50b7\u5bb3\u4f7f\u7528\u8005\u300d\u5f8c\uff0c\u76f8\u4fe1\u5927\u5bb6\u5c0d\u8cc7\u5b89\u7684\u91cd\u8981\u6027\u4e5f\u6709\u4e86\u6df1\u523b\u7684\u9ad4\u609f\uff0c\u7db2\u8def\u4e16\u754c\u6c92\u6709\u7d55\u5c0d\u7684\u5b89\u5168! \u4e0d\u7ba1\u4eca\u5929\u662f\u8eab\u70ba\u4f7f\u7528\u8005\u9084\u662f\u958b\u767c\u8005\uff0c\u90fd\u8981\u4e00\u518d\u7684\u5c0f\u5fc3!\u7db2\u8def\u4e16\u754c\u4e0d\u8981\u8ddf\u4eba\u5bb6\u8ac7\u4ec0\u9ebc\u4fe1\u4efb\uff0c\u4f60\u4e0d\u76f8\u4fe1\u4eba\u5bb6\uff0c\u4eba\u5bb6\u4e5f\u4e0d\u76f8\u4fe1\u4f60\uff0c\u8b39\u614e\u70ba\u4e0a\u5c31\u662f\u6700\u597d\u7684\u9632\u79a6!!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u4e86\u5982\u4f55\u512a\u5316\u6211\u5011\u7684\u7cfb\u7d71\u5f8c\uff0c\u770b\u4f3c\u5df2\u7d93\u5805\u4e0d\u53ef\u6467\u3002\u4f46\u512a\u5316\u67b6\u69cb\u5145\u5176\u91cf\u53ea\u662f\u63d0\u9ad8\u6548\u80fd\uff0c\u9019\u5f88\u660e\u986f\u4e0d\u662f\u99ed\u5ba2\u4e0d\u653b\u64ca\u4f60\u7684\u539f\u56e0\uff0c\u5728\u9ad8\u6548\u80fd\u7684\u7cfb\u7d71\u5982\u679c\u7cfb\u7d71\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u99ed\u5ba2\u9084\u662f\u80fd\u8f15\u6613\u7e5e\u904e\u6240\u6709\u7684\u9632\u7dda !! \u9019\u7bc7\u5c31\u4f86\u804a\u804a\uff0c\u87ec\u806f\u7db2\u9801\u5b89\u5168\u6f0f\u6d1e\u6392\u884c\u699c\uff08OWASP Top 10\uff09\u591a\u5e74\u7684\u982d\u865f\u6bba\u624b\u2014\u2014XSS \u653b\u64ca\uff08Cross-Site Scripting\uff0c\u8de8\u7db2\u7ad9\u6307\u4ee4\u78bc\u653b\u64ca\uff09\u3002 \u7c21\u4ecb XSS \u7684\u6838\u5fc3\u539f\u7406\u975e\u5e38\u7c21\u55ae\uff1a\u300c\u501f\u5200\u6bba\u4eba\u300d\u3002 \u99ed\u5ba2\u5229\u7528\u7db2\u7ad9\u5c0d\u4f7f\u7528\u8005\u8f38\u5165\u5167\u5bb9\u7f3a\u4e4f\u6aa2\u67e5\u7684\u6f0f\u6d1e\uff0c\u5c07\u60e1\u610f\u6307\u4ee4\uff08JavaScript \u7a0b\u5f0f\u78bc\uff09\u6ce8\u5165\u5230\u7db2\u9801\u4e2d\u3002\u56e0\u70ba\u700f\u89bd\u5668\u4e0d\u6703\u6aa2\u67e5\u4e0b\u8f09\u4e0b\u4f86\u7684JS\uff0c\u56e0\u6b64\u7576\u5176\u4ed6\u7121\u8f9c\u7684\u4f7f\u7528\u8005\u700f\u89bd\u9019\u500b\u7db2\u9801\u6642\uff0c\u700f\u89bd\u5668\u5c31\u6703\u4e56\u4e56\u57f7\u884c\u9019\u6bb5\u60e1\u610f\u6307\u4ee4\u3002 \u4e00\u5c0f\u6bb5\u60e1\u610f JS 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