{"id":209787,"date":"2025-10-23T23:10:43","date_gmt":"2025-10-23T15:10:43","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209787\/"},"modified":"2025-10-23T23:10:44","modified_gmt":"2025-10-23T15:10:44","slug":"csrf-cdn","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209787\/","title":{"rendered":"\u522b\u8ba9CSRF\u7ed5\u8fc7CDN\uff1a\u9632\u62a4\u7b56\u7565\u4e0e\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"<p>\u5728\u4f7f\u7528 CDN \u63d0\u5347\u7f51\u7ad9\u6027\u80fd\u4e0e\u53ef\u7528\u6027\u7684\u540c\u65f6\uff0c\u5f88\u591a\u7ad9\u957f\u548c\u5f00\u53d1\u8005\u5ffd\u89c6\u4e86\u4e00\u4e2a\u6f5c\u5728\u98ce\u9669\uff1aCDN \u7684\u7f13\u5b58\u4e0e\u8fb9\u7f18\u903b\u8f91\u53ef\u80fd\u65e0\u610f\u4e2d\u5bfc\u81f4 CSRF\uff08\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020\uff09\u9632\u62a4\u5931\u6548\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\uff0c\u6df1\u5165\u5256\u6790 CSRF \u7ed5\u8fc7 CDN \u7684\u539f\u7406\u3001\u5e38\u89c1\u573a\u666f\u4ee5\u53ca\u5207\u5b9e\u53ef\u884c\u7684\u9632\u62a4\u7b56\u7565\uff0c\u5e2e\u52a9\u4f60\u5728\u4f7f\u7528\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u5176\u4ed6\u6d77\u5916\u8282\u70b9\uff08\u5982\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668\uff09\u65f6\u6784\u5efa\u7a33\u5065\u7684\u9632\u62a4\u4f53\u7cfb\u3002<\/p>\n<h2>\u5f15\u8a00\uff1a\u4e3a\u4ec0\u4e48 CDN \u4f1a\u5f71\u54cd CSRF \u9632\u62a4<\/h2>\n<p>CDN \u7684\u6838\u5fc3\u529f\u80fd\u662f\u7f13\u5b58\u54cd\u5e94\u5e76\u5728\u8fb9\u7f18\u8282\u70b9\u76f4\u63a5\u54cd\u5e94\u8bf7\u6c42\uff0c\u4ee5\u964d\u4f4e\u6e90\u7ad9\u8d1f\u8f7d\u548c\u63d0\u9ad8\u54cd\u5e94\u901f\u5ea6\u3002\u7136\u800c\uff0c\u7f13\u5b58\u673a\u5236\u901a\u5e38\u57fa\u4e8e URL\u3001\u67e5\u8be2\u53c2\u6570\u548c\u90e8\u5206\u8bf7\u6c42\u5934\u6765\u547d\u4e2d\u7f13\u5b58\u3002\u5982\u679c\u9632\u62a4\u673a\u5236\uff08\u4f8b\u5982 CSRF token\uff09\u4ee5\u53ef\u88ab\u7f13\u5b58\u6216\u9519\u8bef\u914d\u7f6e\u7684\u65b9\u5f0f\u5b58\u5728\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u5229\u7528\u7f13\u5b58\u903b\u8f91\u6216\u8fb9\u7f18\u914d\u7f6e\u6f0f\u6d1e\u53d1\u8d77\u7ed5\u8fc7\u3002\u4f8b\u5982\uff0c\u9759\u6001\u5316\u9875\u9762\u4e2d\u5d4c\u5165\u7684 CSRF token \u88ab CDN \u7f13\u5b58\u540e\uff0c\u6240\u6709\u7528\u6237\u90fd\u53ef\u80fd\u770b\u5230\u540c\u4e00\u4e2a token\uff0c\u4ece\u800c\u4f7f\u540c\u6b65\u4ee4\u724c\u6a21\u5f0f\u5931\u6548\u3002<\/p>\n<h2>CSRF \u57fa\u672c\u539f\u7406\u4e0e\u5e38\u89c1\u9632\u62a4\u6a21\u5f0f<\/h2>\n<p>\u5728\u6df1\u5165 CDN \u76f8\u5173\u95ee\u9898\u524d\uff0c\u5148\u56de\u987e\u5e38\u89c1\u7684 CSRF \u9632\u62a4\u6a21\u5f0f\uff1a<\/p>\n<ul>\n<li><strong>\u540c\u6b65\u4ee4\u724c\uff08Synchronizer Token Pattern\uff09<\/strong>\uff1a\u670d\u52a1\u5668\u5728\u7528\u6237\u4f1a\u8bdd\u4e2d\u5b58\u50a8\u968f\u673a token\uff0c\u524d\u7aef\u5728\u8868\u5355\u6216 AJAX \u8bf7\u6c42\u4e2d\u4f20\u56de\u8be5 token\uff0c\u670d\u52a1\u5668\u9a8c\u8bc1\u540e\u5141\u8bb8\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u53cc\u91cd\u63d0\u4ea4 Cookie\uff08Double Submit Cookie\uff09<\/strong>\uff1a\u5c06 token \u540c\u65f6\u5199\u5165 Cookie \u4e0e\u8bf7\u6c42\u4f53\/\u5934\u90e8\uff0c\u670d\u52a1\u5668\u6bd4\u5bf9\u4e24\u8005\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>SameSite Cookie<\/strong>\uff1a\u901a\u8fc7\u8bbe\u7f6e Cookie \u7684 SameSite \u5c5e\u6027\uff08Lax \u6216 Strict\uff09\u963b\u6b62\u8de8\u7ad9\u70b9\u53d1\u9001 Cookie\uff0c\u51cf\u5c0f CSRF \u98ce\u9669\u3002<\/li>\n<li><strong>Referer\/Origin \u68c0\u67e5<\/strong>\uff1a\u901a\u8fc7\u9a8c\u8bc1\u8bf7\u6c42\u5934\u4e2d\u7684 Origin \u6216 Referer \u6765\u5224\u65ad\u8bf7\u6c42\u6765\u6e90\u662f\u5426\u53ef\u4fe1\u3002<\/li>\n<\/ul>\n<h2>CDN \u73af\u5883\u4e0b\u7684\u5178\u578b\u7ed5\u8fc7\u573a\u666f<\/h2>\n<p>\u4e0b\u9762\u5217\u4e3e\u51e0\u79cd\u5728 CDN \u90e8\u7f72\u4e2d\u5e38\u89c1\u7684 CSRF \u7ed5\u8fc7\u6216\u5f31\u5316\u573a\u666f\uff1a<\/p>\n<ul>\n<li>\u9875\u9762\u6216 API \u54cd\u5e94\u88ab CDN \u7f13\u5b58\uff0c\u5305\u542b\u4e86\u5355\u4e00\u7684 CSRF token\uff0c\u5bfc\u81f4\u6240\u6709\u7528\u6237\u5171\u4eab\u540c\u4e00 token\u3002<\/li>\n<li>\u8fb9\u7f18\u811a\u672c\u6216 VCL\uff08Varnish Configuration Language\uff09\u9519\u8bef\u5730\u4fee\u6539\u6216\u5220\u9664\u5b89\u5168\u76f8\u5173\u7684\u8bf7\u6c42\u5934\uff08\u5982 Origin\uff09\uff0c\u4f7f\u6e90\u7ad9\u65e0\u6cd5\u8fdb\u884c\u51c6\u786e\u6821\u9a8c\u3002<\/li>\n<li>\u4f7f\u7528\u5e26\u51ed\u8bc1\u7684\u8de8\u57df AJAX\uff08withCredentials\uff09\u65f6\uff0cCDN \u5bf9 Cookie \u7684\u8f6c\u53d1\u6216\u540c\u57df\u7b56\u7565\u914d\u7f6e\u4e0d\u5f53\uff0c\u5bfc\u81f4 SameSite \u65e0\u6548\u6216 Cookie \u88ab\u610f\u5916\u6cc4\u9732\u3002<\/li>\n<li>CDN \u7684\u9884\u53d6\u3001\u955c\u50cf\u6216\u81ea\u5b9a\u4e49\u7f13\u5b58\u952e\u7b56\u7565\u5c06\u4e0d\u5e94\u88ab\u7f13\u5b58\u7684\u9875\u9762\u7eb3\u5165\u7f13\u5b58\u8303\u56f4\u3002<\/li>\n<\/ul>\n<h2>\u9762\u5411 CDN \u7684\u9632\u62a4\u7b56\u7565\u4e0e\u5b9e\u6218\u5efa\u8bae<\/h2>\n<h3>1. \u786e\u4fdd CSRF token \u4e0d\u88ab\u8fb9\u7f18\u7f13\u5b58<\/h3>\n<p>\u6700\u76f4\u63a5\u7684\u9519\u8bef\u662f\u628a\u5305\u542b\u52a8\u6001 token \u7684\u9875\u9762\u653e\u5165 CDN \u7f13\u5b58\u3002\u89e3\u51b3\u529e\u6cd5\uff1a<\/p>\n<ul>\n<li>\u5bf9\u5305\u542b token \u7684\u9875\u9762\u8bbe\u7f6e\u9002\u5f53\u7684 Cache-Control\uff08\u4f8b\u5982 no-store\u3001private\u3001must-revalidate\uff09\u3002<\/li>\n<li>\u4f7f\u7528\u8fb9\u7f18\u914d\u7f6e\uff08\u5982 Cloudflare Page Rules\u3001Varnish VCL\uff09\u6839\u636e URL \u8def\u5f84\u6216 Cookie \u7981\u6b62\u7f13\u5b58\u654f\u611f\u9875\u9762\u3002<\/li>\n<li>\u5982\u679c\u5fc5\u987b\u7f13\u5b58 HTML\uff08\u4f8b\u5982 SSR \u573a\u666f\uff09\uff0c\u8003\u8651\u5c06 token \u901a\u8fc7 AJAX \u5728\u5ba2\u6237\u7aef\u5411\u6e90\u7ad9\u5355\u72ec\u8bf7\u6c42\u83b7\u53d6\uff0c\u8fd9\u6837 CDN \u7f13\u5b58\u7684\u53ea\u662f\u6a21\u677f\u800c\u975e\u5177\u4f53 token\u3002<\/li>\n<\/ul>\n<h3>2. \u4f7f\u7528\u8bf7\u6c42\u5934\u65b9\u5f0f\u4f20\u9012 CSRF token \u5e76\u8ba9\u8fb9\u7f18\u900f\u4f20<\/h3>\n<p>\u5c06 token \u653e\u5728\u81ea\u5b9a\u4e49\u8bf7\u6c42\u5934\uff08\u5982 X-CSRF-Token\uff09\u6bd4\u653e\u5728\u8868\u5355\u9690\u85cf\u57df\u66f4\u6613\u63a7\u5236\uff0c\u540c\u65f6\u907f\u514d\u88ab\u7f13\u5b58\u3002\u5173\u952e\u8981\u70b9\uff1a<\/p>\n<ul>\n<li>\u786e\u4fdd CDN \u914d\u7f6e\u5141\u8bb8\u900f\u4f20\u8be5\u81ea\u5b9a\u4e49\u5934\uff0c\u5426\u5219\u9a8c\u8bc1\u5931\u8d25\u3002\u5bf9\u4e8e Varnish\/EdgeWorkers\/Workers\uff0c\u8981\u5728\u914d\u7f6e\u4e2d\u52a0\u5165\u8be5\u5934\u5230 forward list\u3002<\/li>\n<li>\u524d\u7aef\u5728\u53d1\u9001 AJAX \u8bf7\u6c42\u65f6\u628a token \u653e\u5230\u5934\u90e8\uff0c\u670d\u52a1\u5668\u9a8c\u8bc1\u540e\u518d\u5904\u7406\u3002<\/li>\n<\/ul>\n<h3>3. \u5229\u7528 SameSite \u4e0e\u77ed\u751f\u547d\u5468\u671f Cookie \u7ed3\u5408\u53cc\u91cd\u63d0\u4ea4<\/h3>\n<p>SameSite\uff0c\u5bf9\u4e8e\u5927\u591a\u6570\u5e94\u7528\u662f\u5f3a\u6709\u529b\u7684\u9632\u7ebf\u3002\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u5c06\u4f1a\u8bdd Cookie \u8bbe\u7f6e\u4e3a Secure \u4e14 SameSite=Lax \u6216 Strict\u3002\u5bf9\u7ecf\u5e38\u8de8\u7ad9\u5d4c\u5165\u7684\u529f\u80fd\u53ef\u4ee5\u6709\u9009\u62e9\u5730\u653e\u5bbd\u3002<\/li>\n<li>\u914d\u5408\u53cc\u91cd\u63d0\u4ea4 Cookie\uff1a\u5728\u9875\u9762\u4e0a\u7528\u975e HttpOnly \u7684 cookie \u5199\u5165 token\uff0c\u540c\u65f6\u5728\u8bf7\u6c42\u5934\u6216\u8868\u5355\u4e2d\u63d0\u4ea4 token\u3002\u670d\u52a1\u5668\u6bd4\u5bf9\u4e24\u8005\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u4f7f\u7528\u77ed\u751f\u547d\u5468\u671f\u4e0e\u5b9a\u671f\u5237\u65b0\u673a\u5236\u964d\u4f4e token \u88ab\u957f\u671f\u6ee5\u7528\u7684\u98ce\u9669\u3002<\/li>\n<\/ul>\n<h3>4. \u5f3a\u5316 Origin\/Referer \u6821\u9a8c\u5e76\u8003\u8651 CDN \u5bf9\u5934\u90e8\u7684\u5f71\u54cd<\/h3>\n<p>Origin \u68c0\u67e5\u662f\u6bd4\u8f83\u7a33\u5065\u7684\u9632\u62a4\u65b9\u5f0f\uff0c\u4f46\u9700\u8981\u6ce8\u610f CDN \u53ef\u80fd\u4f1a\u4fee\u6539\u6216\u4e22\u5f03\u8fd9\u4e9b\u5b57\u6bb5\uff1a<\/p>\n<ul>\n<li>\u4f18\u5148\u68c0\u67e5 Origin \u5934\uff0c\u5bf9\u4e8e\u8868\u5355\u63d0\u4ea4\u6216 CORS \u8bf7\u6c42\u4f7f\u7528 Origin \u9a8c\u8bc1\u6bd4 Referer \u66f4\u53ef\u9760\u3002<\/li>\n<li>\u5728 CDN \u8fb9\u7f18\u786e\u4fdd\u8fd9\u4e9b\u5934\u4e0d\u4f1a\u88ab\u53bb\u9664\u6216\u6539\u5199\uff0c\u5fc5\u8981\u65f6\u5728\u8fb9\u7f18\u811a\u672c\u4e2d\u8bb0\u5f55\u539f\u59cb\u5934\u5e76\u8f6c\u53d1\u5230\u6e90\u7ad9\u3002<\/li>\n<\/ul>\n<h3>5. \u9488\u5bf9 API \u4e0e SPA \u7684\u9632\u62a4\u5dee\u5f02\u5316\u8bbe\u8ba1<\/h3>\n<p>\u5355\u9875\u5e94\u7528\uff08SPA\uff09\u548c\u57fa\u4e8e token \u7684 API \u901a\u5e38\u4e0d\u4f1a\u4f7f\u7528\u4f20\u7edf\u7684\u540c\u6b65\u4ee4\u724c\u3002\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u5bf9\u57fa\u4e8e JWT \u7684\u8ba4\u8bc1\uff0c\u907f\u514d\u5c06 JWT \u653e\u5728\u53ef\u81ea\u52a8\u53d1\u9001\u7684 Cookie \u4e2d\uff08\u5426\u5219\u4f1a\u51fa\u73b0 CSRF \u98ce\u9669\uff09\u3002\u53ef\u5c06\u5176\u4fdd\u5b58\u5728\u5185\u5b58\u6216\u6d4f\u89c8\u5668\u5b58\u50a8\u4e2d\uff0c\u5e76\u5728\u6bcf\u6b21\u8bf7\u6c42\u65f6\u653e\u5165 Authorization \u5934\u3002<\/li>\n<li>\u5bf9\u9700\u8981\u8de8\u57df\u8bbf\u95ee\u7684 API\uff0c\u4e25\u683c\u914d\u7f6e CORS\uff0c\u4ec5\u5141\u8bb8\u7279\u5b9a\u7684\u57df\u548c\u65b9\u6cd5\uff0c\u5173\u95ed credentials\uff08\u5982\u679c\u4e0d\u5fc5\u8981\uff09\u4ee5\u9632\u6b62 Cookie \u88ab\u53d1\u9001\u3002<\/li>\n<\/ul>\n<h3>6. \u5728\u8fb9\u7f18\u5c42\u52a0\u5165\u9632\u62a4\u4f46\u4fdd\u6301\u6e90\u7ad9\u4e3a\u4e3b\u9a8c\u8bc1<\/h3>\n<p>CDN\/\u8fb9\u7f18\u53ef\u4ee5\u505a\u7b2c\u4e00\u9053\u8fc7\u6ee4\uff0c\u4f8b\u5982\u963b\u6321\u660e\u663e\u6076\u610f\u6d41\u91cf\u6216\u6821\u9a8c\u8bf7\u6c42\u5934\u683c\u5f0f\u3002\u4f46\u4e0d\u8981\u628a\u5173\u952e\u7684\u5b89\u5168\u51b3\u7b56\u5b8c\u5168\u4e0b\u653e\u5230\u8fb9\u7f18\uff1a<\/p>\n<ul>\n<li>\u8fb9\u7f18\u53ef\u505a\u901f\u7387\u9650\u5236\u3001IP \u9ed1\u540d\u5355\u6216\u7b80\u5355\u7684 Referer \u6821\u9a8c\u6765\u964d\u4f4e\u653b\u51fb\u9762\u3002<\/li>\n<li>\u771f\u6b63\u7684 token \u9a8c\u8bc1\u4e0e\u654f\u611f\u64cd\u4f5c\u4ecd\u5e94\u5728\u6e90\u7ad9\u5b8c\u6210\uff0c\u786e\u4fdd\u4e0d\u4f1a\u56e0\u8fb9\u7f18\u914d\u7f6e\u95ee\u9898\u800c\u5bfc\u81f4\u5b89\u5168\u7f3a\u53e3\u3002<\/li>\n<\/ul>\n<h2>\u914d\u7f6e\u793a\u4f8b\uff08\u601d\u8def\u7ea7\u522b\uff09<\/h2>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e24\u4e2a\u601d\u8def\u7ea7\u522b\u7684\u793a\u4f8b\u7247\u6bb5\uff0c\u4fbf\u4e8e\u5728\u5b9e\u9645\u90e8\u7f72\u65f6\u53c2\u8003\u3002<\/p>\n<h3>Varnish\uff08VCL\uff09\u7f13\u5b58\u7b56\u7565\u793a\u4f8b\u601d\u8def<\/h3>\n<p>\u4e0d\u8981\u5728 CDN \u7f13\u5b58\u5305\u542b CSRF token \u7684\u9875\u9762\uff0c\u793a\u4f8b\u6d41\u7a0b\uff1a<\/p>\n<ul>\n<li>vcl_recv\uff1a\u5982\u679c\u8bf7\u6c42\u542b\u6709\u767b\u5f55\u6001 Cookie \u6216 X-CSRF-Token\uff0c\u5219\u8bbe\u7f6e req.http.Cache-Control = &#8220;no-cache&#8221;\u3002<\/li>\n<li>vcl_backend_response\uff1a\u6839\u636e\u540e\u7aef\u8fd4\u56de\u7684 Cache-Control 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