{"id":401,"date":"2015-09-22T11:01:51","date_gmt":"2015-09-22T03:01:51","guid":{"rendered":"http:\/\/www.huike007.cn\/?p=401"},"modified":"2015-09-22T11:01:51","modified_gmt":"2015-09-22T03:01:51","slug":"%e6%b5%85%e8%b0%88csrf%e6%94%bb%e5%87%bb%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"http:\/\/www.huike007.cn\/?p=401","title":{"rendered":"\u6d45\u8c08CSRF\u653b\u51fb\u65b9\u5f0f"},"content":{"rendered":"

\u4e00.CSRF\u662f\u4ec0\u4e48\uff1f<\/b>
\nCSRF\uff08Cross-site request forgery\uff09\uff0c\u4e2d\u6587\u540d\u79f0\uff1a\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020\uff0c\u4e5f\u88ab\u79f0\u4e3a\uff1aone click attack\/session riding\uff0c\u7f29\u5199\u4e3a\uff1aCSRF\/XSRF\u3002
\n\u4e8c.CSRF\u53ef\u4ee5\u505a\u4ec0\u4e48\uff1f<\/b>
\n\u4f60\u8fd9\u53ef\u4ee5\u8fd9\u4e48\u7406\u89e3CSRF\u653b\u51fb\uff1a\u653b\u51fb\u8005\u76d7\u7528\u4e86\u4f60\u7684\u8eab\u4efd\uff0c\u4ee5\u4f60\u7684\u540d\u4e49\u53d1\u9001\u6076\u610f\u8bf7\u6c42\u3002CSRF\u80fd\u591f\u505a\u7684\u4e8b\u60c5\u5305\u62ec\uff1a\u4ee5\u4f60\u540d\u4e49\u53d1\u9001\u90ae\u4ef6\uff0c\u53d1\u6d88\u606f\uff0c\u76d7\u53d6\u4f60\u7684\u8d26\u53f7\uff0c\u751a\u81f3\u4e8e\u8d2d\u4e70\u5546\u54c1\uff0c\u865a\u62df\u8d27\u5e01\u8f6c\u8d26……\u9020\u6210\u7684\u95ee\u9898\u5305\u62ec\uff1a\u4e2a\u4eba\u9690\u79c1\u6cc4\u9732\u4ee5\u53ca\u8d22\u4ea7\u5b89\u5168\u3002
\n\u4e09.CSRF\u6f0f\u6d1e\u73b0\u72b6<\/b>
\nCSRF\u8fd9\u79cd\u653b\u51fb\u65b9\u5f0f\u57282000\u5e74\u5df2\u7ecf\u88ab\u56fd\u5916\u7684\u5b89\u5168\u4eba\u5458\u63d0\u51fa\uff0c\u4f46\u5728\u56fd\u5185\uff0c\u76f4\u523006\u5e74\u624d\u5f00\u59cb\u88ab\u5173\u6ce8\uff0c08\u5e74\uff0c\u56fd\u5185\u5916\u7684\u591a\u4e2a\u5927\u578b\u793e\u533a\u548c\u4ea4\u4e92\u7f51\u7ad9\u5206\u522b\u7206\u51faCSRF\u6f0f\u6d1e\uff0c\u5982\uff1aNYTimes.com\uff08\u7ebd\u7ea6\u65f6\u62a5\uff09\u3001Metafilter\uff08\u4e00\u4e2a\u5927\u578b\u7684BLOG\u7f51\u7ad9\uff09\uff0cYouTube\u548c\u767e\u5ea6HI……\u800c\u73b0\u5728\uff0c\u4e92\u8054\u7f51\u4e0a\u7684\u8bb8\u591a\u7ad9\u70b9\u4ecd\u5bf9\u6b64\u6beb\u65e0\u9632\u5907\uff0c\u4ee5\u81f3\u4e8e\u5b89\u5168\u4e1a\u754c\u79f0CSRF\u4e3a\u201c\u6c89\u7761\u7684\u5de8\u4eba\u201d\u3002
\n\u56db.CSRF\u7684\u539f\u7406<\/b>
\n\u4e0b\u56fe\u7b80\u5355\u9610\u8ff0\u4e86CSRF\u653b\u51fb\u7684\u601d\u60f3\uff1a
\n\"\"
\n\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u51fa\uff0c\u8981\u5b8c\u6210\u4e00\u6b21CSRF\u653b\u51fb\uff0c\u53d7\u5bb3\u8005\u5fc5\u987b\u4f9d\u6b21\u5b8c\u6210\u4e24\u4e2a\u6b65\u9aa4\uff1a
\n1.\u767b\u5f55\u53d7\u4fe1\u4efb\u7f51\u7ad9A\uff0c\u5e76\u5728\u672c\u5730\u751f\u6210Cookie\u3002
\n2.\u5728\u4e0d\u767b\u51faA\u7684\u60c5\u51b5\u4e0b\uff0c\u8bbf\u95ee\u5371\u9669\u7f51\u7ad9B\u3002
\n\u770b\u5230\u8fd9\u91cc\uff0c\u4f60\u4e5f\u8bb8\u4f1a\u8bf4\uff1a\u201c\u5982\u679c\u6211\u4e0d\u6ee1\u8db3\u4ee5\u4e0a\u4e24\u4e2a\u6761\u4ef6\u4e2d\u7684\u4e00\u4e2a\uff0c\u6211\u5c31\u4e0d\u4f1a\u53d7\u5230CSRF\u7684\u653b\u51fb\u201d\u3002\u662f\u7684\uff0c\u786e\u5b9e\u5982\u6b64\uff0c\u4f46\u4f60\u4e0d\u80fd\u4fdd\u8bc1\u4ee5\u4e0b\u60c5\u51b5\u4e0d\u4f1a\u53d1\u751f\uff1a
\n1.\u4f60\u4e0d\u80fd\u4fdd\u8bc1\u4f60\u767b\u5f55\u4e86\u4e00\u4e2a\u7f51\u7ad9\u540e\uff0c\u4e0d\u518d\u6253\u5f00\u4e00\u4e2atab\u9875\u9762\u5e76\u8bbf\u95ee\u53e6\u5916\u7684\u7f51\u7ad9\u3002
\n2.\u4f60\u4e0d\u80fd\u4fdd\u8bc1\u4f60\u5173\u95ed\u6d4f\u89c8\u5668\u4e86\u540e\uff0c\u4f60\u672c\u5730\u7684Cookie\u7acb\u523b\u8fc7\u671f\uff0c\u4f60\u4e0a\u6b21\u7684\u4f1a\u8bdd\u5df2\u7ecf\u7ed3\u675f\u3002\uff08\u4e8b\u5b9e\u4e0a\uff0c\u5173\u95ed\u6d4f\u89c8\u5668\u4e0d\u80fd\u7ed3\u675f\u4e00\u4e2a\u4f1a\u8bdd\uff0c\u4f46\u5927\u591a\u6570\u4eba\u90fd\u4f1a\u9519\u8bef\u7684\u8ba4\u4e3a\u5173\u95ed\u6d4f\u89c8\u5668\u5c31\u7b49\u4e8e\u9000\u51fa\u767b\u5f55\/\u7ed3\u675f\u4f1a\u8bdd\u4e86……\uff09
\n3.\u4e0a\u56fe\u4e2d\u6240\u8c13\u7684\u653b\u51fb\u7f51\u7ad9\uff0c\u53ef\u80fd\u662f\u4e00\u4e2a\u5b58\u5728\u5176\u4ed6\u6f0f\u6d1e\u7684\u53ef\u4fe1\u4efb\u7684\u7ecf\u5e38\u88ab\u4eba\u8bbf\u95ee\u7684\u7f51\u7ad9\u3002
\n\u4e0a\u9762\u5927\u6982\u5730\u8bb2\u4e86\u4e00\u4e0bCSRF\u653b\u51fb\u7684\u601d\u60f3\uff0c\u4e0b\u9762\u6211\u5c06\u7528\u51e0\u4e2a\u4f8b\u5b50\u8be6\u7ec6\u8bf4\u8bf4\u5177\u4f53\u7684CSRF\u653b\u51fb\uff0c\u8fd9\u91cc\u6211\u4ee5\u4e00\u4e2a\u94f6\u884c\u8f6c\u8d26\u7684\u64cd\u4f5c\u4f5c\u4e3a\u4f8b\u5b50\uff08\u4ec5\u4ec5\u662f\u4f8b\u5b50\uff0c\u771f\u5b9e\u7684\u94f6\u884c\u7f51\u7ad9\u6ca1\u8fd9\u4e48\u50bb:>\uff09
\n\u3000\u3000\u793a\u4f8b1\uff1a<\/b>
\n\u94f6\u884c\u7f51\u7ad9A\uff0c\u5b83\u4ee5GET\u8bf7\u6c42\u6765\u5b8c\u6210\u94f6\u884c\u8f6c\u8d26\u7684\u64cd\u4f5c\uff0c\u5982\uff1ahttp:\/\/www.mybank.com\/Transfer.php?toBankId=11&money=1000
\n\u5371\u9669\u7f51\u7ad9B\uff0c\u5b83\u91cc\u9762\u6709\u4e00\u6bb5HTML\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

\u3000\u3000<img src=http:\/\/www.mybank.com\/Transfer.php?toBankId=11&money=1000><\/div>\n

\u9996\u5148\uff0c\u4f60\u767b\u5f55\u4e86\u94f6\u884c\u7f51\u7ad9A\uff0c\u7136\u540e\u8bbf\u95ee\u5371\u9669\u7f51\u7ad9B\uff0c\u5662\uff0c\u8fd9\u65f6\u4f60\u4f1a\u53d1\u73b0\u4f60\u7684\u94f6\u884c\u8d26\u6237\u5c11\u4e861000\u5757……
\n\u4e3a\u4ec0\u4e48\u4f1a\u8fd9\u6837\u5462\uff1f\u539f\u56e0\u662f\u94f6\u884c\u7f51\u7ad9A\u8fdd\u53cd\u4e86HTTP\u89c4\u8303\uff0c\u4f7f\u7528GET\u8bf7\u6c42\u66f4\u65b0\u8d44\u6e90\u3002\u5728\u8bbf\u95ee\u5371\u9669\u7f51\u7ad9B\u7684\u4e4b\u524d\uff0c\u4f60\u5df2\u7ecf\u767b\u5f55\u4e86\u94f6\u884c\u7f51\u7ad9A\uff0c\u800cB\u4e2d\u7684<img>\u4ee5GET\u7684\u65b9\u5f0f\u8bf7\u6c42\u7b2c\u4e09\u65b9\u8d44\u6e90\uff08\u8fd9\u91cc\u7684\u7b2c\u4e09\u65b9\u5c31\u662f\u6307\u94f6\u884c\u7f51\u7ad9\u4e86\uff0c\u539f\u672c\u8fd9\u662f\u4e00\u4e2a\u5408\u6cd5\u7684\u8bf7\u6c42\uff0c\u4f46\u8fd9\u91cc\u88ab\u4e0d\u6cd5\u5206\u5b50\u5229\u7528\u4e86\uff09\uff0c\u6240\u4ee5\u4f60\u7684\u6d4f\u89c8\u5668\u4f1a\u5e26\u4e0a\u4f60\u7684\u94f6\u884c\u7f51\u7ad9A\u7684Cookie\u53d1\u51faGet\u8bf7\u6c42\uff0c\u53bb\u83b7\u53d6\u8d44\u6e90\u201chttp:\/\/www.mybank.com\/Transfer.php?toBankId=11&money=1000\u201d\uff0c\u7ed3\u679c\u94f6\u884c\u7f51\u7ad9\u670d\u52a1\u5668\u6536\u5230\u8bf7\u6c42\u540e\uff0c\u8ba4\u4e3a\u8fd9\u662f\u4e00\u4e2a\u66f4\u65b0\u8d44\u6e90\u64cd\u4f5c\uff08\u8f6c\u8d26\u64cd\u4f5c\uff09\uff0c\u6240\u4ee5\u5c31\u7acb\u523b\u8fdb\u884c\u8f6c\u8d26\u64cd\u4f5c……
\n\u793a\u4f8b2\uff1a<\/b>
\n\u4e3a\u4e86\u675c\u7edd\u4e0a\u9762\u7684\u95ee\u9898\uff0c\u94f6\u884c\u51b3\u5b9a\u6539\u7528POST\u8bf7\u6c42\u5b8c\u6210\u8f6c\u8d26\u64cd\u4f5c\u3002
\n\u94f6\u884c\u7f51\u7ad9A\u7684WEB\u8868\u5355\u5982\u4e0b\uff1a<\/p>\n

\u3000\u3000<form action=”Transfer.php” method=”POST”>
\n<p>ToBankId: <input type=”text” name=”toBankId” \/><\/p>
\n<p>Money: <input type=”text” name=”money” \/><\/p>
\n<p><input type=”submit” value=”Transfer” \/><\/p>
\n<\/form><\/div>\n

\u540e\u53f0\u5904\u7406\u9875\u9762Transfer.php\u5982\u4e0b\uff1a<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

\u3000\u3000<?php
\nsession_start();
\nif (isset($_REQUEST[‘toBankId’] &&\u3000isset($_REQUEST[‘money’]))
\n{
\nbuy_stocks($_REQUEST[‘toBankId’],\u3000$_REQUEST[‘money’]);
\n}
\n?><\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

\u5371\u9669\u7f51\u7ad9B\uff0c\u4ecd\u7136\u53ea\u662f\u5305\u542b\u90a3\u53e5HTML\u4ee3\u7801\uff1a<\/p>\n

\u3000\u3000<img src=http:\/\/www.mybank.com\/Transfer.php?toBankId=11&money=1000><\/div>\n

\u548c\u793a\u4f8b1\u4e2d\u7684\u64cd\u4f5c\u4e00\u6837\uff0c\u4f60\u9996\u5148\u767b\u5f55\u4e86\u94f6\u884c\u7f51\u7ad9A\uff0c\u7136\u540e\u8bbf\u95ee\u5371\u9669\u7f51\u7ad9B\uff0c\u7ed3\u679c…..\u548c\u793a\u4f8b1\u4e00\u6837\uff0c\u4f60\u518d\u6b21\u6ca1\u4e861000\u5757\uff5eT_T\uff0c\u8fd9\u6b21\u4e8b\u6545\u7684\u539f\u56e0\u662f\uff1a\u94f6\u884c\u540e\u53f0\u4f7f\u7528\u4e86$_REQUEST\u53bb\u83b7\u53d6\u8bf7\u6c42\u7684\u6570\u636e\uff0c\u800c$_REQUEST\u65e2\u53ef\u4ee5\u83b7\u53d6GET\u8bf7\u6c42\u7684\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u83b7\u53d6POST\u8bf7\u6c42\u7684\u6570\u636e\uff0c\u8fd9\u5c31\u9020\u6210\u4e86\u5728\u540e\u53f0\u5904\u7406\u7a0b\u5e8f\u65e0\u6cd5\u533a\u5206\u8fd9\u5230\u5e95\u662fGET\u8bf7\u6c42\u7684\u6570\u636e\u8fd8\u662fPOST\u8bf7\u6c42\u7684\u6570\u636e\u3002\u5728PHP\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528$_GET\u548c$_POST\u5206\u522b\u83b7\u53d6GET\u8bf7\u6c42\u548cPOST\u8bf7\u6c42\u7684\u6570\u636e\u3002\u5728JAVA\u4e2d\uff0c\u7528\u4e8e\u83b7\u53d6\u8bf7\u6c42\u6570\u636erequest\u4e00\u6837\u5b58\u5728\u4e0d\u80fd\u533a\u5206GET\u8bf7\u6c42\u6570\u636e\u548cPOST\u6570\u636e\u7684\u95ee\u9898\u3002
\n\u793a\u4f8b3\uff1a<\/b>
\n\u7ecf\u8fc7\u524d\u97622\u4e2a\u60e8\u75db\u7684\u6559\u8bad\uff0c\u94f6\u884c\u51b3\u5b9a\u628a\u83b7\u53d6\u8bf7\u6c42\u6570\u636e\u7684\u65b9\u6cd5\u4e5f\u6539\u4e86\uff0c\u6539\u7528$_POST\uff0c\u53ea\u83b7\u53d6POST\u8bf7\u6c42\u7684\u6570\u636e\uff0c\u540e\u53f0\u5904\u7406\u9875\u9762Transfer.php\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

\u3000\u3000<?php
\nsession_start();
\nif (isset($_POST[‘toBankId’] &&\u3000isset($_POST[‘money’]))
\n{
\nbuy_stocks($_POST[‘toBankId’],\u3000$_POST[‘money’]);
\n}
\n?><\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

\u7136\u800c\uff0c\u5371\u9669\u7f51\u7ad9B\u4e0e\u65f6\u4ff1\u8fdb\uff0c\u5b83\u6539\u4e86\u4e00\u4e0b\u4ee3\u7801\uff1a<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

<html>
\n<head>
\n<script type=”text\/javascript”>
\nfunction steal()
\n{
\niframe = document.frames[“steal”];
\niframe.document.Submit(“transfer”);
\n}
\n<\/script>
\n<\/head>
\n<body onload=”steal()”>
\n<iframe name=”steal” display=”none”>
\n<form method=”POST” name=”transfer”\u3000action=”http:\/\/www.myBank.com\/Transfer.php”>
\n<input type=”hidden” name=”toBankId” value=”11″>
\n<input type=”hidden” name=”money” value=”1000″>
\n<\/form>
\n<\/iframe>
\n<\/body>
\n<\/html><\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

\u5982\u679c\u7528\u6237\u4ecd\u662f\u7ee7\u7eed\u4e0a\u9762\u7684\u64cd\u4f5c\uff0c\u5f88\u4e0d\u5e78\uff0c\u7ed3\u679c\u5c06\u4f1a\u662f\u518d\u6b21\u4e0d\u89c11000\u5757……\u56e0\u4e3a\u8fd9\u91cc\u5371\u9669\u7f51\u7ad9B\u6697\u5730\u91cc\u53d1\u9001\u4e86POST\u8bf7\u6c42\u5230\u94f6\u884c!
\n\u603b\u7ed3\u4e00\u4e0b\u4e0a\u97623\u4e2a\u4f8b\u5b50\uff0cCSRF\u4e3b\u8981\u7684\u653b\u51fb\u6a21\u5f0f\u57fa\u672c\u4e0a\u662f\u4ee5\u4e0a\u76843\u79cd\uff0c\u5176\u4e2d\u4ee5\u7b2c1,2\u79cd\u6700\u4e3a\u4e25\u91cd\uff0c\u56e0\u4e3a\u89e6\u53d1\u6761\u4ef6\u5f88\u7b80\u5355\uff0c\u4e00\u4e2a<img>\u5c31\u53ef\u4ee5\u4e86\uff0c\u800c\u7b2c3\u79cd\u6bd4\u8f83\u9ebb\u70e6\uff0c\u9700\u8981\u4f7f\u7528JavaScript\uff0c\u6240\u4ee5\u4f7f\u7528\u7684\u673a\u4f1a\u4f1a\u6bd4\u524d\u9762\u7684\u5c11\u5f88\u591a\uff0c\u4f46\u65e0\u8bba\u662f\u54ea\u79cd\u60c5\u51b5\uff0c\u53ea\u8981\u89e6\u53d1\u4e86CSRF\u653b\u51fb\uff0c\u540e\u679c\u90fd\u6709\u53ef\u80fd\u5f88\u4e25\u91cd\u3002
\n\u7406\u89e3\u4e0a\u9762\u76843\u79cd\u653b\u51fb\u6a21\u5f0f\uff0c\u5176\u5b9e\u53ef\u4ee5\u770b\u51fa\uff0cCSRF\u653b\u51fb\u662f\u6e90\u4e8eWEB\u7684\u9690\u5f0f\u8eab\u4efd\u9a8c\u8bc1\u673a\u5236\uff01WEB\u7684\u8eab\u4efd\u9a8c\u8bc1\u673a\u5236\u867d\u7136\u53ef\u4ee5\u4fdd\u8bc1\u4e00\u4e2a\u8bf7\u6c42\u662f\u6765\u81ea\u4e8e\u67d0\u4e2a\u7528\u6237\u7684\u6d4f\u89c8\u5668\uff0c\u4f46\u5374\u65e0\u6cd5\u4fdd\u8bc1\u8be5\u8bf7\u6c42\u662f\u7528\u6237\u6279\u51c6\u53d1\u9001\u7684\uff01
\n\u4e94.CSRF\u7684\u9632\u5fa1<\/b>
\n\u6211\u603b\u7ed3\u4e86\u4e00\u4e0b\u770b\u5230\u7684\u8d44\u6599\uff0cCSRF\u7684\u9632\u5fa1\u53ef\u4ee5\u4ece\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u4e24\u65b9\u9762\u7740\u624b\uff0c\u9632\u5fa1\u6548\u679c\u662f\u4ece\u670d\u52a1\u7aef\u7740\u624b\u6548\u679c\u6bd4\u8f83\u597d\uff0c\u73b0\u5728\u4e00\u822c\u7684CSRF\u9632\u5fa1\u4e5f\u90fd\u5728\u670d\u52a1\u7aef\u8fdb\u884c\u3002
\n1.\u670d\u52a1\u7aef\u8fdb\u884cCSRF\u9632\u5fa1<\/b>
\n\u670d\u52a1\u7aef\u7684CSRF\u65b9\u5f0f\u65b9\u6cd5\u5f88\u591a\u6837\uff0c\u4f46\u603b\u7684\u601d\u60f3\u90fd\u662f\u4e00\u81f4\u7684\uff0c\u5c31\u662f\u5728\u5ba2\u6237\u7aef\u9875\u9762\u589e\u52a0\u4f2a\u968f\u673a\u6570\u3002
\n(1).Cookie Hashing(\u6240\u6709\u8868\u5355\u90fd\u5305\u542b\u540c\u4e00\u4e2a\u4f2a\u968f\u673a\u503c)\uff1a
\n\u8fd9\u53ef\u80fd\u662f\u6700\u7b80\u5355\u7684\u89e3\u51b3\u65b9\u6848\u4e86\uff0c\u56e0\u4e3a\u653b\u51fb\u8005\u4e0d\u80fd\u83b7\u5f97\u7b2c\u4e09\u65b9\u7684Cookie(\u7406\u8bba\u4e0a)\uff0c\u6240\u4ee5\u8868\u5355\u4e2d\u7684\u6570\u636e\u4e5f\u5c31\u6784\u9020\u5931\u8d25\u4e86:><\/p>\n

\u3000\u3000<?php
\n\/\/\u6784\u9020\u52a0\u5bc6\u7684Cookie\u4fe1\u606f
\n$value = \u201cDefenseSCRF\u201d;
\nsetcookie(\u201dcookie\u201d, $value, time()+3600);
\n?><\/div>\n

\u5728\u8868\u5355\u91cc\u589e\u52a0Hash\u503c\uff0c\u4ee5\u8ba4\u8bc1\u8fd9\u786e\u5b9e\u662f\u7528\u6237\u53d1\u9001\u7684\u8bf7\u6c42\u3002<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

\u3000\u3000<?php
\n$hash = md5($_COOKIE[‘cookie’]);
\n?>
\n<form method=\u201dPOST\u201d action=\u201dtransfer.php\u201d>
\n<input type=\u201dtext\u201d name=\u201dtoBankId\u201d>
\n<input type=\u201dtext\u201d name=\u201dmoney\u201d>
\n<input type=\u201dhidden\u201d name=\u201dhash\u201d value=\u201d<?=$hash;?>\u201d>
\n<input type=\u201dsubmit\u201d name=\u201dsubmit\u201d value=\u201dSubmit\u201d>
\n<\/form><\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

\u7136\u540e\u5728\u670d\u52a1\u5668\u7aef\u8fdb\u884cHash\u503c\u9a8c\u8bc1<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

<?php
\nif(isset($_POST[‘check’])) {
\n$hash = md5($_COOKIE[‘cookie’]);
\nif($_POST[‘check’] == $hash) {
\ndoJob();
\n} else {
\n\/\/…
\n}
\n} else {
\n\/\/…
\n}
\n?><\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

\u8fd9\u4e2a\u65b9\u6cd5\u4e2a\u4eba\u89c9\u5f97\u5df2\u7ecf\u53ef\u4ee5\u675c\u7edd99%\u7684CSRF\u653b\u51fb\u4e86\uff0c\u90a3\u8fd8\u67091%\u5462….\u7531\u4e8e\u7528\u6237\u7684Cookie\u5f88\u5bb9\u6613\u7531\u4e8e\u7f51\u7ad9\u7684XSS\u6f0f\u6d1e\u800c\u88ab\u76d7\u53d6\uff0c\u8fd9\u5c31\u53e6\u5916\u76841%\u3002\u4e00\u822c\u7684\u653b\u51fb\u8005\u770b\u5230\u6709\u9700\u8981\u7b97Hash\u503c\uff0c\u57fa\u672c\u90fd\u4f1a\u653e\u5f03\u4e86\uff0c\u67d0\u4e9b\u9664\u5916\uff0c\u6240\u4ee5\u5982\u679c\u9700\u8981100%\u7684\u675c\u7edd\uff0c\u8fd9\u4e2a\u4e0d\u662f\u6700\u597d\u7684\u65b9\u6cd5\u3002
\n(2).\u9a8c\u8bc1\u7801
\n\u8fd9\u4e2a\u65b9\u6848\u7684\u601d\u8def\u662f\uff1a\u6bcf\u6b21\u7684\u7528\u6237\u63d0\u4ea4\u90fd\u9700\u8981\u7528\u6237\u5728\u8868\u5355\u4e2d\u586b\u5199\u4e00\u4e2a\u56fe\u7247\u4e0a\u7684\u968f\u673a\u5b57\u7b26\u4e32\uff0c\u5384….\u8fd9\u4e2a\u65b9\u6848\u53ef\u4ee5\u5b8c\u5168\u89e3\u51b3CSRF\uff0c\u4f46\u4e2a\u4eba\u89c9\u5f97\u5728\u6613\u7528\u6027\u65b9\u9762\u4f3c\u4e4e\u4e0d\u662f\u592a\u597d\uff0c\u8fd8\u6709\u542c\u95fb\u662f\u9a8c\u8bc1\u7801\u56fe\u7247\u7684\u4f7f\u7528\u6d89\u53ca\u4e86\u4e00\u4e2a\u88ab\u79f0\u4e3aMHTML\u7684Bug\uff0c\u53ef\u80fd\u5728\u67d0\u4e9b\u7248\u672c\u7684\u5fae\u8f6fIE\u4e2d\u53d7\u5f71\u54cd\u3002
\n(3).One-Time Tokens(\u4e0d\u540c\u7684\u8868\u5355\u5305\u542b\u4e00\u4e2a\u4e0d\u540c\u7684\u4f2a\u968f\u673a\u503c)
\n\u5728\u5b9e\u73b0One-Time Tokens\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4e00\u70b9\uff1a\u5c31\u662f\u201c\u5e76\u884c\u4f1a\u8bdd\u7684\u517c\u5bb9\u201d\u3002\u5982\u679c\u7528\u6237\u5728\u4e00\u4e2a\u7ad9\u70b9\u4e0a\u540c\u65f6\u6253\u5f00\u4e86\u4e24\u4e2a\u4e0d\u540c\u7684\u8868\u5355\uff0cCSRF\u4fdd\u62a4\u63aa\u65bd\u4e0d\u5e94\u8be5\u5f71\u54cd\u5230\u4ed6\u5bf9\u4efb\u4f55\u8868\u5355\u7684\u63d0\u4ea4\u3002\u8003\u8651\u4e00\u4e0b\u5982\u679c\u6bcf\u6b21\u8868\u5355\u88ab\u88c5\u5165\u65f6\u7ad9\u70b9\u751f\u6210\u4e00\u4e2a\u4f2a\u968f\u673a\u503c\u6765\u8986\u76d6\u4ee5\u524d\u7684\u4f2a\u968f\u673a\u503c\u5c06\u4f1a\u53d1\u751f\u4ec0\u4e48\u60c5\u51b5\uff1a\u7528\u6237\u53ea\u80fd\u6210\u529f\u5730\u63d0\u4ea4\u4ed6\u6700\u540e\u6253\u5f00\u7684\u8868\u5355\uff0c\u56e0\u4e3a\u6240\u6709\u5176\u4ed6\u7684\u8868\u5355\u90fd\u542b\u6709\u975e\u6cd5\u7684\u4f2a\u968f\u673a\u503c\u3002\u5fc5\u987b\u5c0f\u5fc3\u64cd\u4f5c\u4ee5\u786e\u4fddCSRF\u4fdd\u62a4\u63aa\u65bd\u4e0d\u4f1a\u5f71\u54cd\u9009\u9879\u5361\u5f0f\u7684\u6d4f\u89c8\u6216\u8005\u5229\u7528\u591a\u4e2a\u6d4f\u89c8\u5668\u7a97\u53e3\u6d4f\u89c8\u4e00\u4e2a\u7ad9\u70b9\u3002
\n\u4ee5\u4e0b\u6211\u7684\u5b9e\u73b0:
\n1).\u5148\u662f\u4ee4\u724c\u751f\u6210\u51fd\u6570(gen_token())\uff1a<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

<?php
\nfunction gen_token() {
\n\/\/\u8fd9\u91cc\u6211\u662f\u8d2a\u65b9\u4fbf\uff0c\u5b9e\u9645\u4e0a\u5355\u4f7f\u7528Rand()\u5f97\u51fa\u7684\u968f\u673a\u6570\u4f5c\u4e3a\u4ee4\u724c\uff0c\u4e5f\u662f\u4e0d\u5b89\u5168\u7684\u3002
\n\/\/\u8fd9\u4e2a\u53ef\u4ee5\u53c2\u8003\u6211\u5199\u7684Findbugs\u7b14\u8bb0\u4e2d\u7684\u300aRandom object created and used only once\u300b<\/span><\/a>
\n$token = md5(uniqid(rand(), true));
\nreturn $token;
\n}<\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

2).\u7136\u540e\u662fSession\u4ee4\u724c\u751f\u6210\u51fd\u6570(gen_stoken())\uff1a<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

<?php
\nfunction gen_stoken() {
\n$pToken = “”;
\nif($_SESSION[STOKEN_NAME] == $pToken){
\n\/\/\u6ca1\u6709\u503c\uff0c\u8d4b\u65b0\u503c
\n$_SESSION[STOKEN_NAME] = gen_token();
\n}
\nelse{
\n\/\/\u7ee7\u7eed\u4f7f\u7528\u65e7\u7684\u503c
\n}
\n}
\n?><\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

3).WEB\u8868\u5355\u751f\u6210\u9690\u85cf\u8f93\u5165\u57df\u7684\u51fd\u6570\uff1a<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

<?php
\nfunction gen_input() {
\ngen_stoken();
\necho \u201c<input type=\\\u201dhidden\\\u201d name=\\\u201d” . FTOKEN_NAME . \u201c\\\u201d
\nvalue=\\\u201d” . $_SESSION[STOKEN_NAME] . \u201c\\\u201d> \u201c;
\n}
\n?><\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

4).WEB\u8868\u5355\u7ed3\u6784\uff1a<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n

<?php
\nsession_start();
\ninclude(\u201dfunctions.php\u201d);
\n?>
\n<form method=\u201dPOST\u201d action=\u201dtransfer.php\u201d>
\n<input type=\u201dtext\u201d name=\u201dtoBankId\u201d>
\n<input type=\u201dtext\u201d name=\u201dmoney\u201d>
\n<? gen_input(); ?>
\n<input type=\u201dsubmit\u201d name=\u201dsubmit\u201d value=\u201dSubmit\u201d>
\n<\/FORM><\/p>\n

\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n

5).\u670d\u52a1\u7aef\u6838\u5bf9\u4ee4\u724c\uff1a
\n\u8fd9\u4e2a\u5f88\u7b80\u5355\uff0c\u8fd9\u91cc\u5c31\u4e0d\u518d\u5570\u55e6\u4e86\u3002
\n\u4e0a\u9762\u8fd9\u4e2a\u5176\u5b9e\u4e0d\u5b8c\u5168\u7b26\u5408\u201c\u5e76\u884c\u4f1a\u8bdd\u7684\u517c\u5bb9\u201d\u7684\u89c4\u5219\uff0c\u5927\u5bb6\u53ef\u4ee5\u5728\u6b64\u57fa\u7840\u4e0a\u4fee\u6539\u3002
\n 
\n\u516d.\u53c2\u8003\u6587\u732e<\/b>
\n[1].Preventing CSRF<\/span><\/a>
\n[2].Security Corner: Cross-Site Request Forgeries<\/span><\/a>
\n[3].\u300a\u6df1\u5165\u89e3\u6790\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020\u6f0f\u6d1e\uff1a\u539f\u7406\u5256\u6790\u300b<\/span><\/a>
\n[4].\u300aWeb\u5b89\u5168\u6d4b\u8bd5\u4e4b\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020\uff08CSRF\uff09\u300b<\/span><\/a>
\n[5].\u300a\u6df1\u5165\u89e3\u6790\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020\u6f0f\u6d1e\uff1a\u5b9e\u4f8b\u8bb2\u89e3\u300b<\/span><\/a>
\n[6].http:\/\/baike.baidu.com\/view\/1609487.htm<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00.CSRF\u662f\u4ec0\u4e48\uff1f CSRF\uff08Cross-site request forgery\uff09\uff0c\u4e2d\u6587\u540d\u79f0\uff1a\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020 […]<\/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\/401"}],"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=401"}],"version-history":[{"count":1,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=\/wp\/v2\/posts\/401\/revisions"}],"predecessor-version":[{"id":402,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=\/wp\/v2\/posts\/401\/revisions\/402"}],"wp:attachment":[{"href":"http:\/\/www.huike007.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=401"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.huike007.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}