{"id":394,"date":"2015-08-11T13:18:16","date_gmt":"2015-08-11T05:18:16","guid":{"rendered":"http:\/\/www.huike007.cn\/?p=394"},"modified":"2015-08-11T13:18:16","modified_gmt":"2015-08-11T05:18:16","slug":"csrf%e6%94%bb%e5%87%bb%e7%9a%84%e5%ba%94%e5%af%b9%e4%b9%8b%e9%81%93","status":"publish","type":"post","link":"http:\/\/www.huike007.cn\/?p=394","title":{"rendered":"CSRF\u653b\u51fb\u7684\u5e94\u5bf9\u4e4b\u9053"},"content":{"rendered":"

CSRF \u80cc\u666f\u4e0e\u4ecb\u7ecd
\n<\/strong>CSRF\uff08Cross Site Request Forgery, \u8de8\u7ad9\u57df\u8bf7\u6c42\u4f2a\u9020\uff09\u662f\u4e00\u79cd\u7f51\u7edc\u7684\u653b\u51fb\u65b9\u5f0f\uff0c\u5b83\u5728 2007 \u5e74\u66fe\u88ab\u5217\u4e3a\u4e92\u8054\u7f51 20 \u5927\u5b89\u5168\u9690\u60a3\u4e4b\u4e00\u3002\u5176\u4ed6\u5b89\u5168\u9690\u60a3\uff0c\u6bd4\u5982 SQL \u811a\u672c\u6ce8\u5165\uff0c\u8de8\u7ad9\u57df\u811a\u672c\u653b\u51fb\u7b49\u5728\u8fd1\u5e74\u6765\u5df2\u7ecf\u9010\u6e10\u4e3a\u4f17\u4eba\u719f\u77e5\uff0c\u5f88\u591a\u7f51\u7ad9\u4e5f\u90fd\u9488\u5bf9\u4ed6\u4eec\u8fdb\u884c\u4e86\u9632\u5fa1\u3002\u7136\u800c\uff0c\u5bf9\u4e8e\u5927\u591a\u6570\u4eba\u6765\u8bf4\uff0cCSRF \u5374\u4f9d\u7136\u662f\u4e00\u4e2a\u964c\u751f\u7684\u6982\u5ff5\u3002\u5373\u4fbf\u662f\u5927\u540d\u9f0e\u9f0e\u7684 Gmail, \u5728 2007 \u5e74\u5e95\u4e5f\u5b58\u5728\u7740 CSRF \u6f0f\u6d1e\uff0c\u4ece\u800c\u88ab\u9ed1\u5ba2\u653b\u51fb\u800c\u4f7f Gmail \u7684\u7528\u6237\u9020\u6210\u5de8\u5927\u7684\u635f\u5931\u3002<\/span>
\nCSRF \u653b\u51fb\u5b9e\u4f8b<\/strong>
\nCSRF \u653b\u51fb\u53ef\u4ee5\u5728\u53d7\u5bb3\u8005\u6beb\u4e0d\u77e5\u60c5\u7684\u60c5\u51b5\u4e0b\u4ee5\u53d7\u5bb3\u8005\u540d\u4e49\u4f2a\u9020\u8bf7\u6c42\u53d1\u9001\u7ed9\u53d7\u653b\u51fb\u7ad9\u70b9\uff0c\u4ece\u800c\u5728\u5e76\u672a\u6388\u6743\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u5728\u6743\u9650\u4fdd\u62a4\u4e4b\u4e0b\u7684\u64cd\u4f5c\u3002\u6bd4\u5982\u8bf4\uff0c\u53d7\u5bb3\u8005 Bob \u5728\u94f6\u884c\u6709\u4e00\u7b14\u5b58\u6b3e\uff0c\u901a\u8fc7\u5bf9\u94f6\u884c\u7684\u7f51\u7ad9\u53d1\u9001\u8bf7\u6c42?<\/span><\/span>http:\/\/bank.example\/withdraw?account=bob<\/a>&amount=1000000&for=bob2 \u53ef\u4ee5\u4f7f Bob \u628a 1000000 \u7684\u5b58\u6b3e\u8f6c\u5230 bob2 \u7684\u8d26\u53f7\u4e0b\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u8be5\u8bf7\u6c42\u53d1\u9001\u5230\u7f51\u7ad9\u540e\uff0c\u670d\u52a1\u5668\u4f1a\u5148\u9a8c\u8bc1\u8be5\u8bf7\u6c42\u662f\u5426\u6765\u81ea\u4e00\u4e2a\u5408\u6cd5\u7684 session\uff0c\u5e76\u4e14\u8be5 session \u7684\u7528\u6237 Bob \u5df2\u7ecf\u6210\u529f\u767b\u9646\u3002\u9ed1\u5ba2 Mallory \u81ea\u5df1\u5728\u8be5\u94f6\u884c\u4e5f\u6709\u8d26\u6237\uff0c\u4ed6\u77e5\u9053\u4e0a\u6587\u4e2d\u7684 URL \u53ef\u4ee5\u628a\u94b1\u8fdb\u884c\u8f6c\u5e10\u64cd\u4f5c\u3002Mallory \u53ef\u4ee5\u81ea\u5df1\u53d1\u9001\u4e00\u4e2a\u8bf7\u6c42\u7ed9\u94f6\u884c\uff1ahttp:\/\/bank.example\/withdraw?account=bob<\/a>&amount=1000000&for=Mallory\u3002\u4f46\u662f\u8fd9\u4e2a\u8bf7\u6c42\u6765\u81ea Mallory \u800c\u975e Bob\uff0c\u4ed6\u4e0d\u80fd\u901a\u8fc7\u5b89\u5168\u8ba4\u8bc1\uff0c\u56e0\u6b64\u8be5\u8bf7\u6c42\u4e0d\u4f1a\u8d77\u4f5c\u7528\u3002\u8fd9\u65f6\uff0cMallory \u60f3\u5230\u4f7f\u7528 CSRF \u7684\u653b\u51fb\u65b9\u5f0f\uff0c\u4ed6\u5148\u81ea\u5df1\u505a\u4e00\u4e2a\u7f51\u7ad9\uff0c\u5728\u7f51\u7ad9\u4e2d\u653e\u5165\u5982\u4e0b\u4ee3\u7801\uff1a src=\u201dhttp:\/\/bank.example\/withdraw?account=bob<\/a>&amount=1000000&for=Mallory \u201d\uff0c\u5e76\u4e14\u901a\u8fc7\u5e7f\u544a\u7b49\u8bf1\u4f7f Bob \u6765\u8bbf\u95ee\u4ed6\u7684\u7f51\u7ad9\u3002\u5f53 Bob \u8bbf\u95ee\u8be5\u7f51\u7ad9\u65f6\uff0c\u4e0a\u8ff0 url \u5c31\u4f1a\u4ece Bob \u7684\u6d4f\u89c8\u5668\u53d1\u5411\u94f6\u884c\uff0c\u800c\u8fd9\u4e2a\u8bf7\u6c42\u4f1a\u9644\u5e26 Bob \u6d4f\u89c8\u5668\u4e2d\u7684 cookie \u4e00\u8d77\u53d1\u5411\u94f6\u884c\u670d\u52a1\u5668\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u8be5\u8bf7\u6c42\u4f1a\u5931\u8d25\uff0c\u56e0\u4e3a\u4ed6\u8981\u6c42 Bob \u7684\u8ba4\u8bc1\u4fe1\u606f\u3002\u4f46\u662f\uff0c\u5982\u679c Bob \u5f53\u65f6\u6070\u5de7\u521a\u8bbf\u95ee\u4ed6\u7684\u94f6\u884c\u540e\u4e0d\u4e45\uff0c\u4ed6\u7684\u6d4f\u89c8\u5668\u4e0e\u94f6\u884c\u7f51\u7ad9\u4e4b\u95f4\u7684 session \u5c1a\u672a\u8fc7\u671f\uff0c\u6d4f\u89c8\u5668\u7684 cookie \u4e4b\u4e2d\u542b\u6709 Bob \u7684\u8ba4\u8bc1\u4fe1\u606f\u3002\u8fd9\u65f6\uff0c\u60b2\u5267\u53d1\u751f\u4e86\uff0c\u8fd9\u4e2a url \u8bf7\u6c42\u5c31\u4f1a\u5f97\u5230\u54cd\u5e94\uff0c\u94b1\u5c06\u4ece Bob \u7684\u8d26\u53f7\u8f6c\u79fb\u5230 Mallory \u7684\u8d26\u53f7\uff0c\u800c Bob \u5f53\u65f6\u6beb\u4e0d\u77e5\u60c5\u3002\u7b49\u4ee5\u540e Bob \u53d1\u73b0\u8d26\u6237\u94b1\u5c11\u4e86\uff0c\u5373\u4f7f\u4ed6\u53bb\u94f6\u884c\u67e5\u8be2\u65e5\u5fd7\uff0c\u4ed6\u4e5f\u53ea\u80fd\u53d1\u73b0\u786e\u5b9e\u6709\u4e00\u4e2a\u6765\u81ea\u4e8e\u4ed6\u672c\u4eba\u7684\u5408\u6cd5\u8bf7\u6c42\u8f6c\u79fb\u4e86\u8d44\u91d1\uff0c\u6ca1\u6709\u4efb\u4f55\u88ab\u653b\u51fb\u7684\u75d5\u8ff9\u3002\u800c Mallory \u5219\u53ef\u4ee5\u62ff\u5230\u94b1\u540e\u900d\u9065\u6cd5\u5916\u3002
\nCSRF \u653b\u51fb\u7684\u5bf9\u8c61<\/strong>
\n\u5728\u8ba8\u8bba\u5982\u4f55\u62b5\u5fa1 CSRF \u4e4b\u524d\uff0c\u5148\u8981\u660e\u786e CSRF \u653b\u51fb\u7684\u5bf9\u8c61\uff0c\u4e5f\u5c31\u662f\u8981\u4fdd\u62a4\u7684\u5bf9\u8c61\u3002\u4ece\u4ee5\u4e0a\u7684\u4f8b\u5b50\u53ef\u77e5\uff0cCSRF \u653b\u51fb\u662f\u9ed1\u5ba2\u501f\u52a9\u53d7\u5bb3\u8005\u7684 cookie \u9a97\u53d6\u670d\u52a1\u5668\u7684\u4fe1\u4efb\uff0c\u4f46\u662f\u9ed1\u5ba2\u5e76\u4e0d\u80fd\u62ff\u5230 cookie\uff0c\u4e5f\u770b\u4e0d\u5230 cookie \u7684\u5185\u5bb9\u3002\u53e6\u5916\uff0c\u5bf9\u4e8e\u670d\u52a1\u5668\u8fd4\u56de\u7684\u7ed3\u679c\uff0c\u7531\u4e8e\u6d4f\u89c8\u5668\u540c\u6e90\u7b56\u7565\u7684\u9650\u5236\uff0c\u9ed1\u5ba2\u4e5f\u65e0\u6cd5\u8fdb\u884c\u89e3\u6790\u3002\u56e0\u6b64\uff0c\u9ed1\u5ba2\u65e0\u6cd5\u4ece\u8fd4\u56de\u7684\u7ed3\u679c\u4e2d\u5f97\u5230\u4efb\u4f55\u4e1c\u897f\uff0c\u4ed6\u6240\u80fd\u505a\u7684\u5c31\u662f\u7ed9\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\uff0c\u4ee5\u6267\u884c\u8bf7\u6c42\u4e2d\u6240\u63cf\u8ff0\u7684\u547d\u4ee4\uff0c\u5728\u670d\u52a1\u5668\u7aef\u76f4\u63a5\u6539\u53d8\u6570\u636e\u7684\u503c\uff0c\u800c\u975e\u7a83\u53d6\u670d\u52a1\u5668\u4e2d\u7684\u6570\u636e\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u8981\u4fdd\u62a4\u7684\u5bf9\u8c61\u662f\u90a3\u4e9b\u53ef\u4ee5\u76f4\u63a5\u4ea7\u751f\u6570\u636e\u6539\u53d8\u7684\u670d\u52a1\uff0c\u800c\u5bf9\u4e8e\u8bfb\u53d6\u6570\u636e\u7684\u670d\u52a1\uff0c\u5219\u4e0d\u9700\u8981\u8fdb\u884c CSRF \u7684\u4fdd\u62a4\u3002\u6bd4\u5982\u94f6\u884c\u7cfb\u7edf\u4e2d\u8f6c\u8d26\u7684\u8bf7\u6c42\u4f1a\u76f4\u63a5\u6539\u53d8\u8d26\u6237\u7684\u91d1\u989d\uff0c\u4f1a\u906d\u5230 CSRF \u653b\u51fb\uff0c\u9700\u8981\u4fdd\u62a4\u3002\u800c\u67e5\u8be2\u4f59\u989d\u662f\u5bf9\u91d1\u989d\u7684\u8bfb\u53d6\u64cd\u4f5c\uff0c\u4e0d\u4f1a\u6539\u53d8\u6570\u636e\uff0cCSRF \u653b\u51fb\u65e0\u6cd5\u89e3\u6790\u670d\u52a1\u5668\u8fd4\u56de\u7684\u7ed3\u679c\uff0c\u65e0\u9700\u4fdd\u62a4\u3002
\n\u5f53\u524d\u9632\u5fa1 CSRF \u7684\u51e0\u79cd\u7b56\u7565<\/strong>
\n\u5728\u4e1a\u754c\u76ee\u524d\u9632\u5fa1 CSRF \u653b\u51fb\u4e3b\u8981\u6709\u4e09\u79cd\u7b56\u7565\uff1a\u9a8c\u8bc1 HTTP Referer \u5b57\u6bb5\uff1b\u5728\u8bf7\u6c42\u5730\u5740\u4e2d\u6dfb\u52a0 token \u5e76\u9a8c\u8bc1\uff1b\u5728 HTTP \u5934\u4e2d\u81ea\u5b9a\u4e49\u5c5e\u6027\u5e76\u9a8c\u8bc1\u3002\u4e0b\u9762\u5c31\u5206\u522b\u5bf9\u8fd9\u4e09\u79cd\u7b56\u7565\u8fdb\u884c\u8be6\u7ec6\u4ecb\u7ecd\u3002
\n\u9a8c\u8bc1 HTTP Referer \u5b57\u6bb5<\/strong>
\n\u6839\u636e HTTP \u534f\u8bae\uff0c\u5728 HTTP \u5934\u4e2d\u6709\u4e00\u4e2a\u5b57\u6bb5\u53eb Referer\uff0c\u5b83\u8bb0\u5f55\u4e86\u8be5 HTTP \u8bf7\u6c42\u7684\u6765\u6e90\u5730\u5740\u3002\u5728\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u8bbf\u95ee\u4e00\u4e2a\u5b89\u5168\u53d7\u9650\u9875\u9762\u7684\u8bf7\u6c42\u6765\u81ea\u4e8e\u540c\u4e00\u4e2a\u7f51\u7ad9\uff0c\u6bd4\u5982\u9700\u8981\u8bbf\u95eehttp:\/\/bank.example\/withdraw?account=bob<\/a>&amount=1000000&for=Mallory\uff0c\u7528\u6237\u5fc5\u987b\u5148\u767b\u9646 bank.example\uff0c\u7136\u540e\u901a\u8fc7\u70b9\u51fb\u9875\u9762\u4e0a\u7684\u6309\u94ae\u6765\u89e6\u53d1\u8f6c\u8d26\u4e8b\u4ef6\u3002\u8fd9\u65f6\uff0c\u8be5\u8f6c\u5e10\u8bf7\u6c42\u7684 Referer \u503c\u5c31\u4f1a\u662f\u8f6c\u8d26\u6309\u94ae\u6240\u5728\u7684\u9875\u9762\u7684 URL\uff0c\u901a\u5e38\u662f\u4ee5 bank.example \u57df\u540d\u5f00\u5934\u7684\u5730\u5740\u3002\u800c\u5982\u679c\u9ed1\u5ba2\u8981\u5bf9\u94f6\u884c\u7f51\u7ad9\u5b9e\u65bd CSRF \u653b\u51fb\uff0c\u4ed6\u53ea\u80fd\u5728\u4ed6\u81ea\u5df1\u7684\u7f51\u7ad9\u6784\u9020\u8bf7\u6c42\uff0c\u5f53\u7528\u6237\u901a\u8fc7\u9ed1\u5ba2\u7684\u7f51\u7ad9\u53d1\u9001\u8bf7\u6c42\u5230\u94f6\u884c\u65f6\uff0c\u8be5\u8bf7\u6c42\u7684 Referer \u662f\u6307\u5411\u9ed1\u5ba2\u81ea\u5df1\u7684\u7f51\u7ad9\u3002\u56e0\u6b64\uff0c\u8981\u9632\u5fa1 CSRF \u653b\u51fb\uff0c\u94f6\u884c\u7f51\u7ad9\u53ea\u9700\u8981\u5bf9\u4e8e\u6bcf\u4e00\u4e2a\u8f6c\u8d26\u8bf7\u6c42\u9a8c\u8bc1\u5176 Referer \u503c\uff0c\u5982\u679c\u662f\u4ee5 bank.example \u5f00\u5934\u7684\u57df\u540d\uff0c\u5219\u8bf4\u660e\u8be5\u8bf7\u6c42\u662f\u6765\u81ea\u94f6\u884c\u7f51\u7ad9\u81ea\u5df1\u7684\u8bf7\u6c42\uff0c\u662f\u5408\u6cd5\u7684\u3002\u5982\u679c Referer \u662f\u5176\u4ed6\u7f51\u7ad9\u7684\u8bdd\uff0c\u5219\u6709\u53ef\u80fd\u662f\u9ed1\u5ba2\u7684 CSRF \u653b\u51fb\uff0c\u62d2\u7edd\u8be5\u8bf7\u6c42\u3002
\n\u8fd9\u79cd\u65b9\u6cd5\u7684\u663e\u800c\u6613\u89c1\u7684\u597d\u5904\u5c31\u662f\u7b80\u5355\u6613\u884c\uff0c\u7f51\u7ad9\u7684\u666e\u901a\u5f00\u53d1\u4eba\u5458\u4e0d\u9700\u8981\u64cd\u5fc3 CSRF \u7684\u6f0f\u6d1e\uff0c\u53ea\u9700\u8981\u5728\u6700\u540e\u7ed9\u6240\u6709\u5b89\u5168\u654f\u611f\u7684\u8bf7\u6c42\u7edf\u4e00\u589e\u52a0\u4e00\u4e2a\u62e6\u622a\u5668\u6765\u68c0\u67e5 Referer \u7684\u503c\u5c31\u53ef\u4ee5\u3002\u7279\u522b\u662f\u5bf9\u4e8e\u5f53\u524d\u73b0\u6709\u7684\u7cfb\u7edf\uff0c\u4e0d\u9700\u8981\u6539\u53d8\u5f53\u524d\u7cfb\u7edf\u7684\u4efb\u4f55\u5df2\u6709\u4ee3\u7801\u548c\u903b\u8f91\uff0c\u6ca1\u6709\u98ce\u9669\uff0c\u975e\u5e38\u4fbf\u6377\u3002
\n\u7136\u800c\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5e76\u975e\u4e07\u65e0\u4e00\u5931\u3002Referer \u7684\u503c\u662f\u7531\u6d4f\u89c8\u5668\u63d0\u4f9b\u7684\uff0c\u867d\u7136 HTTP \u534f\u8bae\u4e0a\u6709\u660e\u786e\u7684\u8981\u6c42\uff0c\u4f46\u662f\u6bcf\u4e2a\u6d4f\u89c8\u5668\u5bf9\u4e8e Referer \u7684\u5177\u4f53\u5b9e\u73b0\u53ef\u80fd\u6709\u5dee\u522b\uff0c\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u6d4f\u89c8\u5668\u81ea\u8eab\u6ca1\u6709\u5b89\u5168\u6f0f\u6d1e\u3002\u4f7f\u7528\u9a8c\u8bc1 Referer \u503c\u7684\u65b9\u6cd5\uff0c\u5c31\u662f\u628a\u5b89\u5168\u6027\u90fd\u4f9d\u8d56\u4e8e\u7b2c\u4e09\u65b9\uff08\u5373\u6d4f\u89c8\u5668\uff09\u6765\u4fdd\u969c\uff0c\u4ece\u7406\u8bba\u4e0a\u6765\u8bb2\uff0c\u8fd9\u6837\u5e76\u4e0d\u5b89\u5168\u3002\u4e8b\u5b9e\u4e0a\uff0c\u5bf9\u4e8e\u67d0\u4e9b\u6d4f\u89c8\u5668\uff0c\u6bd4\u5982 IE6 \u6216 FF2\uff0c\u76ee\u524d\u5df2\u7ecf\u6709\u4e00\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u7be1\u6539 Referer \u503c\u3002\u5982\u679c bank.example \u7f51\u7ad9\u652f\u6301 IE6 \u6d4f\u89c8\u5668\uff0c\u9ed1\u5ba2\u5b8c\u5168\u53ef\u4ee5\u628a\u7528\u6237\u6d4f\u89c8\u5668\u7684 Referer \u503c\u8bbe\u4e3a\u4ee5 bank.example \u57df\u540d\u5f00\u5934\u7684\u5730\u5740\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u901a\u8fc7\u9a8c\u8bc1\uff0c\u4ece\u800c\u8fdb\u884c CSRF \u653b\u51fb\u3002
\n\u5373\u4fbf\u662f\u4f7f\u7528\u6700\u65b0\u7684\u6d4f\u89c8\u5668\uff0c\u9ed1\u5ba2\u65e0\u6cd5\u7be1\u6539 Referer \u503c\uff0c\u8fd9\u79cd\u65b9\u6cd5\u4ecd\u7136\u6709\u95ee\u9898\u3002\u56e0\u4e3a Referer \u503c\u4f1a\u8bb0\u5f55\u4e0b\u7528\u6237\u7684\u8bbf\u95ee\u6765\u6e90\uff0c\u6709\u4e9b\u7528\u6237\u8ba4\u4e3a\u8fd9\u6837\u4f1a\u4fb5\u72af\u5230\u4ed6\u4eec\u81ea\u5df1\u7684\u9690\u79c1\u6743\uff0c\u7279\u522b\u662f\u6709\u4e9b\u7ec4\u7ec7\u62c5\u5fc3 Referer \u503c\u4f1a\u628a\u7ec4\u7ec7\u5185\u7f51\u4e2d\u7684\u67d0\u4e9b\u4fe1\u606f\u6cc4\u9732\u5230\u5916\u7f51\u4e2d\u3002\u56e0\u6b64\uff0c\u7528\u6237\u81ea\u5df1\u53ef\u4ee5\u8bbe\u7f6e\u6d4f\u89c8\u5668\u4f7f\u5176\u5728\u53d1\u9001\u8bf7\u6c42\u65f6\u4e0d\u518d\u63d0\u4f9b Referer\u3002\u5f53\u4ed6\u4eec\u6b63\u5e38\u8bbf\u95ee\u94f6\u884c\u7f51\u7ad9\u65f6\uff0c\u7f51\u7ad9\u4f1a\u56e0\u4e3a\u8bf7\u6c42\u6ca1\u6709 Referer \u503c\u800c\u8ba4\u4e3a\u662f CSRF \u653b\u51fb\uff0c\u62d2\u7edd\u5408\u6cd5\u7528\u6237\u7684\u8bbf\u95ee\u3002
\n\u5728\u8bf7\u6c42\u5730\u5740\u4e2d\u6dfb\u52a0 token \u5e76\u9a8c\u8bc1<\/strong>
\nCSRF \u653b\u51fb\u4e4b\u6240\u4ee5\u80fd\u591f\u6210\u529f\uff0c\u662f\u56e0\u4e3a\u9ed1\u5ba2\u53ef\u4ee5\u5b8c\u5168\u4f2a\u9020\u7528\u6237\u7684\u8bf7\u6c42\uff0c\u8be5\u8bf7\u6c42\u4e2d\u6240\u6709\u7684\u7528\u6237\u9a8c\u8bc1\u4fe1\u606f\u90fd\u662f\u5b58\u5728\u4e8e cookie \u4e2d\uff0c\u56e0\u6b64\u9ed1\u5ba2\u53ef\u4ee5\u5728\u4e0d\u77e5\u9053\u8fd9\u4e9b\u9a8c\u8bc1\u4fe1\u606f\u7684\u60c5\u51b5\u4e0b\u76f4\u63a5\u5229\u7528\u7528\u6237\u81ea\u5df1\u7684 cookie \u6765\u901a\u8fc7\u5b89\u5168\u9a8c\u8bc1\u3002\u8981\u62b5\u5fa1 CSRF\uff0c\u5173\u952e\u5728\u4e8e\u5728\u8bf7\u6c42\u4e2d\u653e\u5165\u9ed1\u5ba2\u6240\u4e0d\u80fd\u4f2a\u9020\u7684\u4fe1\u606f\uff0c\u5e76\u4e14\u8be5\u4fe1\u606f\u4e0d\u5b58\u5728\u4e8e cookie \u4e4b\u4e2d\u3002\u53ef\u4ee5\u5728 HTTP \u8bf7\u6c42\u4e2d\u4ee5\u53c2\u6570\u7684\u5f62\u5f0f\u52a0\u5165\u4e00\u4e2a\u968f\u673a\u4ea7\u751f\u7684 token\uff0c\u5e76\u5728\u670d\u52a1\u5668\u7aef\u5efa\u7acb\u4e00\u4e2a\u62e6\u622a\u5668\u6765\u9a8c\u8bc1\u8fd9\u4e2a token\uff0c\u5982\u679c\u8bf7\u6c42\u4e2d\u6ca1\u6709 token \u6216\u8005 token \u5185\u5bb9\u4e0d\u6b63\u786e\uff0c\u5219\u8ba4\u4e3a\u53ef\u80fd\u662f CSRF \u653b\u51fb\u800c\u62d2\u7edd\u8be5\u8bf7\u6c42\u3002
\n\u8fd9\u79cd\u65b9\u6cd5\u8981\u6bd4\u68c0\u67e5 Referer \u8981\u5b89\u5168\u4e00\u4e9b\uff0ctoken \u53ef\u4ee5\u5728\u7528\u6237\u767b\u9646\u540e\u4ea7\u751f\u5e76\u653e\u4e8e session \u4e4b\u4e2d\uff0c\u7136\u540e\u5728\u6bcf\u6b21\u8bf7\u6c42\u65f6\u628a token \u4ece session \u4e2d\u62ff\u51fa\uff0c\u4e0e\u8bf7\u6c42\u4e2d\u7684 token \u8fdb\u884c\u6bd4\u5bf9\uff0c\u4f46\u8fd9\u79cd\u65b9\u6cd5\u7684\u96be\u70b9\u5728\u4e8e\u5982\u4f55\u628a token \u4ee5\u53c2\u6570\u7684\u5f62\u5f0f\u52a0\u5165\u8bf7\u6c42\u3002\u5bf9\u4e8e GET \u8bf7\u6c42\uff0ctoken \u5c06\u9644\u5728\u8bf7\u6c42\u5730\u5740\u4e4b\u540e\uff0c\u8fd9\u6837 URL \u5c31\u53d8\u6210?<\/span><\/span>http:\/\/url?csrftoken=tokenvalue<\/a>\u3002 \u800c\u5bf9\u4e8e POST \u8bf7\u6c42\u6765\u8bf4\uff0c\u8981\u5728 form \u7684\u6700\u540e\u52a0\u4e0a <input type=\u201dhidden\u201d name=\u201dcsrftoken\u201d value=\u201dtokenvalue\u201d\/>\uff0c\u8fd9\u6837\u5c31\u628a token \u4ee5\u53c2\u6570\u7684\u5f62\u5f0f\u52a0\u5165\u8bf7\u6c42\u4e86\u3002\u4f46\u662f\uff0c\u5728\u4e00\u4e2a\u7f51\u7ad9\u4e2d\uff0c\u53ef\u4ee5\u63a5\u53d7\u8bf7\u6c42\u7684\u5730\u65b9\u975e\u5e38\u591a\uff0c\u8981\u5bf9\u4e8e\u6bcf\u4e00\u4e2a\u8bf7\u6c42\u90fd\u52a0\u4e0a token \u662f\u5f88\u9ebb\u70e6\u7684\uff0c\u5e76\u4e14\u5f88\u5bb9\u6613\u6f0f\u6389\uff0c\u901a\u5e38\u4f7f\u7528\u7684\u65b9\u6cd5\u5c31\u662f\u5728\u6bcf\u6b21\u9875\u9762\u52a0\u8f7d\u65f6\uff0c\u4f7f\u7528 javascript \u904d\u5386\u6574\u4e2a dom \u6811\uff0c\u5bf9\u4e8e dom \u4e2d\u6240\u6709\u7684 a \u548c form \u6807\u7b7e\u540e\u52a0\u5165 token\u3002\u8fd9\u6837\u53ef\u4ee5\u89e3\u51b3\u5927\u90e8\u5206\u7684\u8bf7\u6c42\uff0c\u4f46\u662f\u5bf9\u4e8e\u5728\u9875\u9762\u52a0\u8f7d\u4e4b\u540e\u52a8\u6001\u751f\u6210\u7684 html \u4ee3\u7801\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5c31\u6ca1\u6709\u4f5c\u7528\uff0c\u8fd8\u9700\u8981\u7a0b\u5e8f\u5458\u5728\u7f16\u7801\u65f6\u624b\u52a8\u6dfb\u52a0 token\u3002
\n\u8be5\u65b9\u6cd5\u8fd8\u6709\u4e00\u4e2a\u7f3a\u70b9\u662f\u96be\u4ee5\u4fdd\u8bc1 token \u672c\u8eab\u7684\u5b89\u5168\u3002\u7279\u522b\u662f\u5728\u4e00\u4e9b\u8bba\u575b\u4e4b\u7c7b\u652f\u6301\u7528\u6237\u81ea\u5df1\u53d1\u8868\u5185\u5bb9\u7684\u7f51\u7ad9\uff0c\u9ed1\u5ba2\u53ef\u4ee5\u5728\u4e0a\u9762\u53d1\u5e03\u81ea\u5df1\u4e2a\u4eba\u7f51\u7ad9\u7684\u5730\u5740\u3002\u7531\u4e8e\u7cfb\u7edf\u4e5f\u4f1a\u5728\u8fd9\u4e2a\u5730\u5740\u540e\u9762\u52a0\u4e0a token\uff0c\u9ed1\u5ba2\u53ef\u4ee5\u5728\u81ea\u5df1\u7684\u7f51\u7ad9\u4e0a\u5f97\u5230\u8fd9\u4e2a token\uff0c\u5e76\u9a6c\u4e0a\u5c31\u53ef\u4ee5\u53d1\u52a8 CSRF \u653b\u51fb\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u4e00\u70b9\uff0c\u7cfb\u7edf\u53ef\u4ee5\u5728\u6dfb\u52a0 token \u7684\u65f6\u5019\u589e\u52a0\u4e00\u4e2a\u5224\u65ad\uff0c\u5982\u679c\u8fd9\u4e2a\u94fe\u63a5\u662f\u94fe\u5230\u81ea\u5df1\u672c\u7ad9\u7684\uff0c\u5c31\u5728\u540e\u9762\u6dfb\u52a0 token\uff0c\u5982\u679c\u662f\u901a\u5411\u5916\u7f51\u5219\u4e0d\u52a0\u3002\u4e0d\u8fc7\uff0c\u5373\u4f7f\u8fd9\u4e2a csrftoken \u4e0d\u4ee5\u53c2\u6570\u7684\u5f62\u5f0f\u9644\u52a0\u5728\u8bf7\u6c42\u4e4b\u4e2d\uff0c\u9ed1\u5ba2\u7684\u7f51\u7ad9\u4e5f\u540c\u6837\u53ef\u4ee5\u901a\u8fc7 Referer \u6765\u5f97\u5230\u8fd9\u4e2a token \u503c\u4ee5\u53d1\u52a8 CSRF \u653b\u51fb\u3002\u8fd9\u4e5f\u662f\u4e00\u4e9b\u7528\u6237\u559c\u6b22\u624b\u52a8\u5173\u95ed\u6d4f\u89c8\u5668 Referer \u529f\u80fd\u7684\u539f\u56e0\u3002
\n\u5728 HTTP \u5934\u4e2d\u81ea\u5b9a\u4e49\u5c5e\u6027\u5e76\u9a8c\u8bc1<\/strong>
\n\u8fd9\u79cd\u65b9\u6cd5\u4e5f\u662f\u4f7f\u7528 token \u5e76\u8fdb\u884c\u9a8c\u8bc1\uff0c\u548c\u4e0a\u4e00\u79cd\u65b9\u6cd5\u4e0d\u540c\u7684\u662f\uff0c\u8fd9\u91cc\u5e76\u4e0d\u662f\u628a token \u4ee5\u53c2\u6570\u7684\u5f62\u5f0f\u7f6e\u4e8e HTTP \u8bf7\u6c42\u4e4b\u4e2d\uff0c\u800c\u662f\u628a\u5b83\u653e\u5230 HTTP \u5934\u4e2d\u81ea\u5b9a\u4e49\u7684\u5c5e\u6027\u91cc\u3002\u901a\u8fc7 XMLHttpRequest \u8fd9\u4e2a\u7c7b\uff0c\u53ef\u4ee5\u4e00\u6b21\u6027\u7ed9\u6240\u6709\u8be5\u7c7b\u8bf7\u6c42\u52a0\u4e0a csrftoken \u8fd9\u4e2a HTTP \u5934\u5c5e\u6027\uff0c\u5e76\u628a token \u503c\u653e\u5165\u5176\u4e2d\u3002\u8fd9\u6837\u89e3\u51b3\u4e86\u4e0a\u79cd\u65b9\u6cd5\u5728\u8bf7\u6c42\u4e2d\u52a0\u5165 token \u7684\u4e0d\u4fbf\uff0c\u540c\u65f6\uff0c\u901a\u8fc7 XMLHttpRequest \u8bf7\u6c42\u7684\u5730\u5740\u4e0d\u4f1a\u88ab\u8bb0\u5f55\u5230\u6d4f\u89c8\u5668\u7684\u5730\u5740\u680f\uff0c\u4e5f\u4e0d\u7528\u62c5\u5fc3 token \u4f1a\u900f\u8fc7 Referer \u6cc4\u9732\u5230\u5176\u4ed6\u7f51\u7ad9\u4e2d\u53bb\u3002
\n\u7136\u800c\u8fd9\u79cd\u65b9\u6cd5\u7684\u5c40\u9650\u6027\u975e\u5e38\u5927\u3002XMLHttpRequest \u8bf7\u6c42\u901a\u5e38\u7528\u4e8e Ajax \u65b9\u6cd5\u4e2d\u5bf9\u4e8e\u9875\u9762\u5c40\u90e8\u7684\u5f02\u6b65\u5237\u65b0\uff0c\u5e76\u975e\u6240\u6709\u7684\u8bf7\u6c42\u90fd\u9002\u5408\u7528\u8fd9\u4e2a\u7c7b\u6765\u53d1\u8d77\uff0c\u800c\u4e14\u901a\u8fc7\u8be5\u7c7b\u8bf7\u6c42\u5f97\u5230\u7684\u9875\u9762\u4e0d\u80fd\u88ab\u6d4f\u89c8\u5668\u6240\u8bb0\u5f55\u4e0b\uff0c\u4ece\u800c\u8fdb\u884c\u524d\u8fdb\uff0c\u540e\u9000\uff0c\u5237\u65b0\uff0c\u6536\u85cf\u7b49\u64cd\u4f5c\uff0c\u7ed9\u7528\u6237\u5e26\u6765\u4e0d\u4fbf\u3002\u53e6\u5916\uff0c\u5bf9\u4e8e\u6ca1\u6709\u8fdb\u884c CSRF \u9632\u62a4\u7684\u9057\u7559\u7cfb\u7edf\u6765\u8bf4\uff0c\u8981\u91c7\u7528\u8fd9\u79cd\u65b9\u6cd5\u6765\u8fdb\u884c\u9632\u62a4\uff0c\u8981\u628a\u6240\u6709\u8bf7\u6c42\u90fd\u6539\u4e3a XMLHttpRequest \u8bf7\u6c42\uff0c\u8fd9\u6837\u51e0\u4e4e\u662f\u8981\u91cd\u5199\u6574\u4e2a\u7f51\u7ad9\uff0c\u8fd9\u4ee3\u4ef7\u65e0\u7591\u662f\u4e0d\u80fd\u63a5\u53d7\u7684\u3002
\nJava \u4ee3\u7801\u793a\u4f8b<\/strong>
\n\u4e0b\u6587\u5c06\u4ee5 Java \u4e3a\u4f8b\uff0c\u5bf9\u4e0a\u8ff0\u4e09\u79cd\u65b9\u6cd5\u5206\u522b\u7528\u4ee3\u7801\u8fdb\u884c\u793a\u4f8b\u3002\u65e0\u8bba\u4f7f\u7528\u4f55\u79cd\u65b9\u6cd5\uff0c\u5728\u670d\u52a1\u5668\u7aef\u7684\u62e6\u622a\u5668\u5fc5\u4e0d\u53ef\u5c11\uff0c\u5b83\u5c06\u8d1f\u8d23\u68c0\u67e5\u5230\u6765\u7684\u8bf7\u6c42\u662f\u5426\u7b26\u5408\u8981\u6c42\uff0c\u7136\u540e\u89c6\u7ed3\u679c\u800c\u51b3\u5b9a\u662f\u5426\u7ee7\u7eed\u8bf7\u6c42\u6216\u8005\u4e22\u5f03\u3002\u5728 Java \u4e2d\uff0c\u62e6\u622a\u5668\u662f\u7531 Filter \u6765\u5b9e\u73b0\u7684\u3002\u6211\u4eec\u53ef\u4ee5\u7f16\u5199\u4e00\u4e2a Filter\uff0c\u5e76\u5728 web.xml \u4e2d\u5bf9\u5176\u8fdb\u884c\u914d\u7f6e\uff0c\u4f7f\u5176\u5bf9\u4e8e\u8bbf\u95ee\u6240\u6709\u9700\u8981 CSRF \u4fdd\u62a4\u7684\u8d44\u6e90\u7684\u8bf7\u6c42\u8fdb\u884c\u62e6\u622a\u3002
\n\u5728 filter \u4e2d\u5bf9\u8bf7\u6c42\u7684 Referer \u9a8c\u8bc1\u4ee3\u7801\u5982\u4e0b
\n\u6e05\u5355 1. \u5728 Filter \u4e2d\u9a8c\u8bc1 Referer
\n\/\/ \u4ece HTTP \u5934\u4e2d\u53d6\u5f97 Referer \u503c
\nString referer=request.getHeader(“Referer”);?<\/span><\/span>
\n\/\/ \u5224\u65ad Referer \u662f\u5426\u4ee5 bank.example \u5f00\u5934
\nif((referer!=null) &&(referer.trim().startsWith(\u201cbank.example\u201d))){?<\/span><\/span>
\nchain.doFilter(request, response);?<\/span><\/span>
\n}else{?<\/span><\/span>
\nrequest.getRequestDispatcher(\u201cerror.jsp\u201d).forward(request,response);?<\/span><\/span>
\n}
\n\u4ee5\u4e0a\u4ee3\u7801\u5148\u53d6\u5f97 Referer \u503c\uff0c\u7136\u540e\u8fdb\u884c\u5224\u65ad\uff0c\u5f53\u5176\u975e\u7a7a\u5e76\u4ee5 bank.example \u5f00\u5934\u65f6\uff0c\u5219\u7ee7\u7eed\u8bf7\u6c42\uff0c\u5426\u5219\u7684\u8bdd\u53ef\u80fd\u662f CSRF \u653b\u51fb\uff0c\u8f6c\u5230 error.jsp \u9875\u9762\u3002
\n\u5982\u679c\u8981\u8fdb\u4e00\u6b65\u9a8c\u8bc1\u8bf7\u6c42\u4e2d\u7684 token \u503c\uff0c\u4ee3\u7801\u5982\u4e0b
\n\u6e05\u5355 2. \u5728 filter \u4e2d\u9a8c\u8bc1\u8bf7\u6c42\u4e2d\u7684 token
\nHttpServletRequest req = (HttpServletRequest)request;?<\/span><\/span>
\nHttpSession s = req.getSession();?<\/span><\/span>
\n\/\/ \u4ece session \u4e2d\u5f97\u5230 csrftoken \u5c5e\u6027
\nString sToken = (String)s.getAttribute(\u201ccsrftoken\u201d);?<\/span><\/span>
\nif(sToken == null){?<\/span><\/span>
\n\/\/ \u4ea7\u751f\u65b0\u7684 token \u653e\u5165 session \u4e2d
\nsToken = generateToken();?<\/span><\/span>
\ns.setAttribute(\u201ccsrftoken\u201d,sToken);?<\/span><\/span>
\nchain.doFilter(request, response);?<\/span><\/span>
\n} else{?<\/span><\/span>
\n\/\/ \u4ece HTTP \u5934\u4e2d\u53d6\u5f97 csrftoken?<\/span><\/span>
\nString xhrToken = req.getHeader(\u201ccsrftoken\u201d);?<\/span><\/span>
\n\/\/ \u4ece\u8bf7\u6c42\u53c2\u6570\u4e2d\u53d6\u5f97 csrftoken?<\/span><\/span>
\nString pToken = req.getParameter(\u201ccsrftoken\u201d);?<\/span><\/span>
\nif(sToken != null && xhrToken != null && sToken.equals(xhrToken)){?<\/span><\/span>
\nchain.doFilter(request, response);?<\/span><\/span>
\n}else if(sToken != null && pToken != null && sToken.equals(pToken)){?<\/span><\/span>
\nchain.doFilter(request, response);?<\/span><\/span>
\n}else{?<\/span><\/span>
\nrequest.getRequestDispatcher(\u201cerror.jsp\u201d).forward(request,response);?<\/span><\/span>
\n}?<\/span><\/span>
\n}
\n\u9996\u5148\u5224\u65ad session \u4e2d\u6709\u6ca1\u6709 csrftoken\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u5219\u8ba4\u4e3a\u662f\u7b2c\u4e00\u6b21\u8bbf\u95ee\uff0csession \u662f\u65b0\u5efa\u7acb\u7684\uff0c\u8fd9\u65f6\u751f\u6210\u4e00\u4e2a\u65b0\u7684 token\uff0c\u653e\u4e8e session \u4e4b\u4e2d\uff0c\u5e76\u7ee7\u7eed\u6267\u884c\u8bf7\u6c42\u3002\u5982\u679c session \u4e2d\u5df2\u7ecf\u6709 csrftoken\uff0c\u5219\u8bf4\u660e\u7528\u6237\u5df2\u7ecf\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u4e86\u4e00\u4e2a\u6d3b\u8dc3\u7684 session\uff0c\u8fd9\u65f6\u8981\u770b\u8fd9\u4e2a\u8bf7\u6c42\u4e2d\u6709\u6ca1\u6709\u540c\u65f6\u9644\u5e26\u8fd9\u4e2a token\uff0c\u7531\u4e8e\u8bf7\u6c42\u53ef\u80fd\u6765\u81ea\u4e8e\u5e38\u89c4\u7684\u8bbf\u95ee\u6216\u662f XMLHttpRequest \u5f02\u6b65\u8bbf\u95ee\uff0c\u6211\u4eec\u5206\u522b\u5c1d\u8bd5\u4ece\u8bf7\u6c42\u4e2d\u83b7\u53d6 csrftoken \u53c2\u6570\u4ee5\u53ca\u4ece HTTP \u5934\u4e2d\u83b7\u53d6 csrftoken \u81ea\u5b9a\u4e49\u5c5e\u6027\u5e76\u4e0e session \u4e2d\u7684\u503c\u8fdb\u884c\u6bd4\u8f83\uff0c\u53ea\u8981\u6709\u4e00\u4e2a\u5730\u65b9\u5e26\u6709\u6709\u6548 token\uff0c\u5c31\u5224\u5b9a\u8bf7\u6c42\u5408\u6cd5\uff0c\u53ef\u4ee5\u7ee7\u7eed\u6267\u884c\uff0c\u5426\u5219\u5c31\u8f6c\u5230\u9519\u8bef\u9875\u9762\u3002\u751f\u6210 token \u6709\u5f88\u591a\u79cd\u65b9\u6cd5\uff0c\u4efb\u4f55\u7684\u968f\u673a\u7b97\u6cd5\u90fd\u53ef\u4ee5\u4f7f\u7528\uff0cJava \u7684 UUID \u7c7b\u4e5f\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002
\n\u9664\u4e86\u5728\u670d\u52a1\u5668\u7aef\u5229\u7528 filter \u6765\u9a8c\u8bc1 token \u7684\u503c\u4ee5\u5916\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5728\u5ba2\u6237\u7aef\u7ed9\u6bcf\u4e2a\u8bf7\u6c42\u9644\u52a0\u4e0a\u8fd9\u4e2a token\uff0c\u8fd9\u662f\u5229\u7528 js \u6765\u7ed9 html \u4e2d\u7684\u94fe\u63a5\u548c\u8868\u5355\u8bf7\u6c42\u5730\u5740\u9644\u52a0 csrftoken \u4ee3\u7801\uff0c\u5176\u4e2d\u5df2\u5b9a\u4e49 token \u4e3a\u5168\u5c40\u53d8\u91cf\uff0c\u5176\u503c\u53ef\u4ee5\u4ece session \u4e2d\u5f97\u5230\u3002
\n\u6e05\u5355 3. \u5728\u5ba2\u6237\u7aef\u5bf9\u4e8e\u8bf7\u6c42\u9644\u52a0 token
\nfunction appendToken(){?<\/span><\/span>
\nupdateForms();?<\/span><\/span>
\nupdateTags();?<\/span><\/span>
\n}?<\/span><\/span>
\nfunction updateForms() {?<\/span><\/span>
\n\/\/ \u5f97\u5230\u9875\u9762\u4e2d\u6240\u6709\u7684 form \u5143\u7d20
\nvar forms = document.getElementsByTagName(‘form’);?<\/span><\/span>
\nfor(i=0; i<forms.length; i++) {?<\/span><\/span>
\nvar url = forms[i].action;?<\/span><\/span>
\n\/\/ \u5982\u679c\u8fd9\u4e2a form \u7684 action \u503c\u4e3a\u7a7a\uff0c\u5219\u4e0d\u9644\u52a0 csrftoken?<\/span><\/span>
\nif(url == null || url == “” ) continue;?<\/span><\/span>
\n\/\/ \u52a8\u6001\u751f\u6210 input \u5143\u7d20\uff0c\u52a0\u5165\u5230 form \u4e4b\u540e
\nvar e = document.createElement(“input”);?<\/span><\/span>
\ne.name = “csrftoken”;?<\/span><\/span>
\ne.value = token;?<\/span><\/span>
\ne.type=”hidden”;?<\/span><\/span>
\nforms[i].appendChild(e);?<\/span><\/span>
\n}?<\/span><\/span>
\n}?<\/span><\/span>
\nfunction updateTags() {?<\/span><\/span>
\nvar all = document.getElementsByTagName(‘a’);?<\/span><\/span>
\nvar len = all.length;?<\/span><\/span>
\n\/\/ \u904d\u5386\u6240\u6709 a \u5143\u7d20
\nfor(var i=0; i<len; i++) {?<\/span><\/span>
\nvar e = all[i];?<\/span><\/span>
\nupdateTag(e, ‘href’, token);?<\/span><\/span>
\n}?<\/span><\/span>
\n}?<\/span><\/span>
\nfunction updateTag(element, attr, token) {?<\/span><\/span>
\nvar location = element.getAttribute(attr);?<\/span><\/span>
\nif(location != null && location != ” ” ) {?<\/span><\/span>
\nvar fragmentIndex = location.indexOf(‘#’);?<\/span><\/span>
\nvar fragment = null;?<\/span><\/span>
\nif(fragmentIndex != -1){?<\/span><\/span>
\n\/\/url \u4e2d\u542b\u6709\u53ea\u76f8\u5f53\u9875\u7684\u951a\u6807\u8bb0
\nfragment = location.substring(fragmentIndex);?<\/span><\/span>
\nlocation = location.substring(0,fragmentIndex);?<\/span><\/span>
\n}?<\/span><\/span>
\nvar index = location.indexOf(‘?’);?<\/span><\/span>
\nif(index != -1) {?<\/span><\/span>
\n\/\/url \u4e2d\u5df2\u542b\u6709\u5176\u4ed6\u53c2\u6570
\nlocation = location + ‘&csrftoken=’ + token;?<\/span><\/span>
\n} else {?<\/span><\/span>
\n\/\/url \u4e2d\u6ca1\u6709\u5176\u4ed6\u53c2\u6570
\nlocation = location + ‘?csrftoken=’ + token;?<\/span><\/span>
\n}?<\/span><\/span>
\nif(fragment != null){?<\/span><\/span>
\nlocation += fragment;?<\/span><\/span>
\n}?<\/span><\/span>
\nelement.setAttribute(attr, location);?<\/span><\/span>
\n}?<\/span><\/span>
\n}
\n\u5728\u5ba2\u6237\u7aef html \u4e2d\uff0c\u4e3b\u8981\u662f\u6709\u4e24\u4e2a\u5730\u65b9\u9700\u8981\u52a0\u4e0a token\uff0c\u4e00\u4e2a\u662f\u8868\u5355 form\uff0c\u53e6\u4e00\u4e2a\u5c31\u662f\u94fe\u63a5 a\u3002\u8fd9\u6bb5\u4ee3\u7801\u9996\u5148\u904d\u5386\u6240\u6709\u7684 form\uff0c\u5728 form \u6700\u540e\u6dfb\u52a0\u4e00\u9690\u85cf\u5b57\u6bb5\uff0c\u628a csrftoken \u653e\u5165\u5176\u4e2d\u3002\u7136\u540e\uff0c\u4ee3\u7801\u904d\u5386\u6240\u6709\u7684\u94fe\u63a5\u6807\u8bb0 a\uff0c\u5728\u5176 href \u5c5e\u6027\u4e2d\u52a0\u5165 csrftoken \u53c2\u6570\u3002\u6ce8\u610f\u5bf9\u4e8e a.href \u6765\u8bf4\uff0c\u53ef\u80fd\u8be5\u5c5e\u6027\u5df2\u7ecf\u6709\u53c2\u6570\uff0c\u6216\u8005\u6709\u951a\u6807\u8bb0\u3002\u56e0\u6b64\u9700\u8981\u5206\u60c5\u51b5\u8ba8\u8bba\uff0c\u4ee5\u4e0d\u540c\u7684\u683c\u5f0f\u628a csrftoken \u52a0\u5165\u5176\u4e2d\u3002
\n\u5982\u679c\u4f60\u7684\u7f51\u7ad9\u4f7f\u7528 XMLHttpRequest\uff0c\u90a3\u4e48\u8fd8\u9700\u8981\u5728 HTTP \u5934\u4e2d\u81ea\u5b9a\u4e49 csrftoken \u5c5e\u6027\uff0c\u5229\u7528 dojo.xhr \u7ed9 XMLHttpRequest \u52a0\u4e0a\u81ea\u5b9a\u4e49\u5c5e\u6027\u4ee3\u7801\u5982\u4e0b\uff1a
\n\u6e05\u5355 4. \u5728 HTTP \u5934\u4e2d\u81ea\u5b9a\u4e49\u5c5e\u6027
\nvar plainXhr = dojo.xhr;?<\/span><\/span>
\n\/\/ \u91cd\u5199 dojo.xhr \u65b9\u6cd5
\ndojo.xhr = function(method,args,hasBody) {?<\/span><\/span>
\n\/\/ \u786e\u4fdd header \u5bf9\u8c61\u5b58\u5728
\nargs.headers = args.header || {};?<\/span><\/span>
\ntokenValue = ‘<%=request.getSession(false).getAttribute(“csrftoken”)%>’;?<\/span><\/span>
\nvar token = dojo.getObject(“tokenValue”);?<\/span><\/span>
\n\/\/ \u628a csrftoken \u5c5e\u6027\u653e\u5230\u5934\u4e2d
\nargs.headers[“csrftoken”] = (token) ? token : “??”;?<\/span><\/span>
\nreturn plainXhr(method,args,hasBody);?<\/span><\/span>
\n};
\n\u8fd9\u91cc\u6539\u5199\u4e86 dojo.xhr \u7684\u65b9\u6cd5\uff0c\u9996\u5148\u786e\u4fdd dojo.xhr \u4e2d\u5b58\u5728 HTTP \u5934\uff0c\u7136\u540e\u5728 args.headers \u4e2d\u6dfb\u52a0 csrftoken \u5b57\u6bb5\uff0c\u5e76\u628a token \u503c\u4ece session \u91cc\u62ff\u51fa\u653e\u5165\u5b57\u6bb5\u4e2d\u3002
\n
\nCSRF \u9632\u5fa1\u65b9\u6cd5\u9009\u62e9\u4e4b\u9053<\/strong>
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\n\u6700\u540e\uff0c\u8981\u8bb0\u4f4f CSRF \u4e0d\u662f\u9ed1\u5ba2\u552f\u4e00\u7684\u653b\u51fb\u624b\u6bb5\uff0c\u65e0\u8bba\u4f60 CSRF \u9632\u8303\u6709\u591a\u4e48\u4e25\u5bc6\uff0c\u5982\u679c\u4f60\u7cfb\u7edf\u6709\u5176\u4ed6\u5b89\u5168\u6f0f\u6d1e\uff0c\u6bd4\u5982\u8de8\u7ad9\u57df\u811a\u672c\u653b\u51fb XSS\uff0c\u90a3\u4e48\u9ed1\u5ba2\u5c31\u53ef\u4ee5\u7ed5\u8fc7\u4f60\u7684\u5b89\u5168\u9632\u62a4\uff0c\u5c55\u5f00\u5305\u62ec CSRF \u5728\u5185\u7684\u5404\u79cd\u653b\u51fb\uff0c\u4f60\u7684\u9632\u7ebf\u5c06\u5982\u540c\u865a\u8bbe\u3002
\n\u603b\u7ed3\u4e0e\u5c55\u671b<\/strong>
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CSRF \u80cc\u666f\u4e0e\u4ecb\u7ecd CSRF\uff08Cross Site Request Forgery, \u8de8\u7ad9\u57df\u8bf7\u6c42\u4f2a\u9020\uff09\u662f\u4e00\u79cd […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[180],"tags":[350],"_links":{"self":[{"href":"http:\/\/www.huike007.cn\/index.php?rest_route=\/wp\/v2\/posts\/394"}],"collection":[{"href":"http:\/\/www.huike007.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.huike007.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=394"}],"version-history":[{"count":1,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=\/wp\/v2\/posts\/394\/revisions"}],"predecessor-version":[{"id":395,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=\/wp\/v2\/posts\/394\/revisions\/395"}],"wp:attachment":[{"href":"http:\/\/www.huike007.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=394"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}