{"id":1056,"date":"2019-09-02T09:39:04","date_gmt":"2019-09-02T01:39:04","guid":{"rendered":"https:\/\/wyxxt.org.cn\/?p=1056"},"modified":"2023-12-04T16:29:56","modified_gmt":"2023-12-04T08:29:56","slug":"web%e5%b8%b8%e8%a7%81%e7%bd%91%e7%bb%9c%e6%94%bb%e5%87%bb%e5%8e%9f%e7%90%86%e5%8f%8a%e9%98%b2%e8%8c%83%ef%bc%88php%ef%bc%89","status":"publish","type":"post","link":"https:\/\/wyxxt.org.cn\/?p=1056","title":{"rendered":"web\u5e38\u89c1\u7f51\u7edc\u653b\u51fb\u539f\u7406\u53ca\u9632\u8303\uff08PHP\uff09"},"content":{"rendered":"<h3>XSS (Cross Site Scripting \u8de8\u7f51\u7ad9\u811a\u672c\u653b\u51fb)<\/h3>\n<p>\u653b\u51fb\u8005\u5c06\u6076\u610f\u4ee3\u7801\u6ce8\u5165\u5230\u7f51\u9875\u4e0a\uff0c\u5176\u4ed6\u7528\u6237\u5728\u52a0\u8f7d\u7f51\u9875\u65f6\u5c31\u4f1a\u6267\u884c\u4ee3\u7801\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u5f97\u5230\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u66f4\u9ad8\u7684\u6743\u9650\uff08\u5982\u6267\u884c\u4e00\u4e9b\u64cd\u4f5c\uff09\u3001\u79c1\u5bc6\u7f51\u9875\u5185\u5bb9\u3001\u4f1a\u8bdd\u548ccookie\u7b49\u5404\u79cd\u5185\u5bb9\u3002\u8fd9\u4e9b\u6076\u610f\u4ee3\u7801\u901a\u5e38\u662fJavaScript\u3001HTML\u4ee5\u53ca\u5176\u4ed6\u5ba2\u6237\u7aef\u811a\u672c\u8bed\u8a00\u3002<br \/>\n\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-php line-numbers\">&lt;?php\necho \"\u6b22\u8fce\u60a8\uff0c\".$_GET['name'];\n<\/code><\/pre>\n<p>\u5982\u679c\u4f20\u5165\u4e00\u6bb5\u811a\u672c<script>[code]<\/script> \uff0c\u90a3\u4e48\u811a\u672c\u4e5f\u4f1a\u6267\u884c\u3002\u7528\u8fd9\u6837\u7684URL\u5c06\u4f1a\u6267\u884cJavaScript\u7684alert\u51fd\u6570\u5f39\u51fa\u4e00\u4e2a\u5bf9\u8bdd\u6846\uff1ahttp:\/\/localhost\/test.php?name=<script>alert(123456)<\/script><\/p>\n<pre><code class=\"line-numbers\">http:\/\/localhost\/test.php?name=&lt;script&gt;alert(123456)&lt;\/script&gt;\n<\/code><\/pre>\n<p><strong>\u5e38\u7528\u7684\u653b\u51fb\u624b\u6bb5\u6709\uff1a<\/strong><\/p>\n<p>\u76d7\u7528cookie\uff0c\u83b7\u53d6\u654f\u611f\u4fe1\u606f\uff1b<\/p>\n<p>\u5229\u7528iframe\u3001frame\u3001XMLHttpRequest\u6216\u4e0a\u8ff0Flash\u7b49\u65b9\u5f0f\uff0c\u4ee5\uff08\u88ab\u653b\u51fb\uff09\u7528\u6237\u7684\u8eab\u4efd\u6267\u884c\u4e00\u4e9b\u7ba1\u7406\u52a8\u4f5c\uff0c\u6216\u6267\u884c\u4e00\u4e9b\u4e00\u822c\u7684\u5982\u53d1\u5fae\u535a\u3001\u52a0\u597d\u53cb\u3001\u53d1\u79c1\u4fe1\u7b49\u64cd\u4f5c\uff1b<\/p>\n<p>\u5229\u7528\u53ef\u88ab\u653b\u51fb\u7684\u57df\u53d7\u5230\u5176\u4ed6\u57df\u4fe1\u4efb\u7684\u7279\u70b9\uff0c\u4ee5\u53d7\u4fe1\u4efb\u6765\u6e90\u7684\u8eab\u4efd\u8bf7\u6c42\u4e00\u4e9b\u5e73\u65f6\u4e0d\u5141\u8bb8\u7684\u64cd\u4f5c\uff0c\u5982\u8fdb\u884c\u4e0d\u5f53\u7684\u6295\u7968\u6d3b\u52a8\uff1b<\/p>\n<p>\u5728\u8bbf\u95ee\u91cf\u6781\u5927\u7684\u4e00\u4e9b\u9875\u9762\u4e0a\u7684XSS\u53ef\u4ee5\u653b\u51fb\u4e00\u4e9b\u5c0f\u578b\u7f51\u7ad9\uff0c\u5b9e\u73b0DDoS\u653b\u51fb\u7684\u6548\u679c\u3002<\/p>\n<p><strong>\u9632\u8303\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre><code>1.\u4f7f\u7528htmlspecialchars\u51fd\u6570\u5c06\u7279\u6b8a\u5b57\u7b26\u8f6c\u6362\u6210HTML\u7f16\u7801\uff0c\u8fc7\u6ee4\u8f93\u51fa\u7684\u53d8\u91cf\n<\/code><\/pre>\n<h3>CSRF (\u8de8\u7f51\u7ad9\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb Cross Site Request Forgeries)<\/h3>\n<p>\u653b\u51fb\u8005\u4f2a\u9020\u76ee\u6807\u7528\u6237\u7684HTTP\u8bf7\u6c42\uff0c\u7136\u540e\u6b64\u8bf7\u6c42\u53d1\u9001\u5230\u6709CSRF\u6f0f\u6d1e\u7684\u7f51\u7ad9\uff0c\u7f51\u7ad9\u6267\u884c\u6b64\u8bf7\u6c42\u540e\uff0c\u5f15\u53d1\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u3002\u653b\u51fb\u8005\u5229\u7528\u9690\u853d\u7684HTTP\u8fde\u63a5\uff0c\u8ba9\u76ee\u6807\u7528\u6237\u5728\u4e0d\u6ce8\u610f\u7684\u60c5\u51b5\u4e0b\u5355\u51fb\u8fd9\u4e2a\u94fe\u63a5\uff0c\u7531\u4e8e\u662f\u7528\u6237\u81ea\u5df1\u70b9\u51fb\u7684\uff0c\u800c\u4ed6\u53c8\u662f\u5408\u6cd5\u7528\u6237\u62e5\u6709\u5408\u6cd5\u6743\u9650\uff0c\u6240\u4ee5\u76ee\u6807\u7528\u6237\u80fd\u591f\u5728\u7f51\u7ad9\u5185\u6267\u884c\u7279\u5b9a\u7684HTTP\u94fe\u63a5\uff0c\u4ece\u800c\u8fbe\u5230\u653b\u51fb\u8005\u7684\u76ee\u7684\u3002<br \/>\n\u5b83\u4e0eXSS\u7684\u653b\u51fb\u65b9\u6cd5\u4e0d\u540c\uff0cXSS\u5229\u7528\u6f0f\u6d1e\u5f71\u54cd\u7ad9\u70b9\u5185\u7684\u7528\u6237\uff0c\u653b\u51fb\u76ee\u6807\u662f\u540c\u4e00\u7ad9\u70b9\u5185\u7684\u7528\u6237\u8005\uff0c\u800cCSRF \u901a\u8fc7\u4f2a\u88c5\u6210\u53d7\u5bb3\u7528\u6237\u53d1\u9001\u6076\u610f\u8bf7\u6c42\u6765\u5f71\u54cdWeb\u7cfb\u7edf\u4e2d\u53d7\u5bb3\u7528\u6237\u7684\u5229\u76ca\u3002<br \/>\n\u4f8b\u5982:<br \/>\n\u67d0\u4e2a\u8d2d\u7269\u7f51\u7ad9\u8d2d\u4e70\u5546\u54c1\u65f6\uff0c\u91c7\u7528http:\/\/www.shop.com\/buy.php?item=watch&amp;num=100\uff0citem\u53c2\u6570\u786e\u5b9a\u8981\u8d2d\u4e70\u4ec0\u4e48\u7269\u54c1\uff0cnum\u53c2\u6570\u786e\u5b9a\u8981\u8d2d\u4e70\u6570\u91cf\uff0c\u5982\u679c\u653b\u51fb\u8005\u4ee5\u9690\u85cf\u7684\u65b9\u5f0f\u53d1\u9001\u7ed9\u76ee\u6807\u7528\u6237\u94fe\u63a5<br \/>\n\uff0c\u90a3\u4e48\u5982\u679c\u76ee\u6807\u7528\u6237\u4e0d\u5c0f\u5fc3\u8bbf\u95ee\u4ee5\u540e\uff0c\u8d2d\u4e70\u7684\u6570\u91cf\u5c31\u6210\u4e86100\u4e2a<\/p>\n<p><strong>\u9632\u8303\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre><code>  1\u3001\u68c0\u67e5\u7f51\u9875\u7684\u6765\u6e90\n\n  2\u3001\u68c0\u67e5\u5185\u7f6e\u7684\u9690\u85cf\u53d8\u91cf\uff0c\u5982\u8868\u5355csrfToken PSOT\u8bf7\u6c42\n\n  3\u3001\u4f7f\u7528POST\uff0c\u4e0d\u8981\u4f7f\u7528GET\uff0c\u5904\u7406\u53d8\u91cf\u4e5f\u4e0d\u8981\u76f4\u63a5\u4f7f\u7528$_REQUEST\n<\/code><\/pre>\n<h3>SQL\u6ce8\u5165\u653b\u51fb\uff08SQL Injection\uff09<\/h3>\n<ol>\n<li>\u67d0\u4e2aWeb\u5e94\u7528\u6709\u4e00\u4e2a\u767b\u5f55\u9875\u9762\uff0c\u8fd9\u4e2a\u767b\u5f55\u9875\u9762\u63a7\u5236\u7740\u7528\u6237\u662f\u5426\u6709\u6743\u8bbf\u95ee\u5e94\u7528\uff0c\u5b83\u8981\u6c42\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u540d\u79f0\u548c\u5bc6\u7801\uff1b<\/p>\n<\/li>\n<li>\n<p>\u767b\u5f55\u9875\u9762\u4e2d\u8f93\u5165\u7684\u5185\u5bb9\u5c06\u76f4\u63a5\u7528\u6765\u6784\u9020\u52a8\u6001\u7684SQL\u547d\u4ee4\uff0c\u6216\u8005\u76f4\u63a5\u7528\u4f5c\u5b58\u50a8\u8fc7\u7a0b\u7684\u53c2\u6570\uff1b<br \/>\n\u4f8b\u5982\uff1a<br \/>\n$query = &#8216;SELECT * from Users WHERE login = &#8216; . $username . &#8216; AND password = &#8216; . $password;<\/p>\n<\/li>\n<li>\n<p>\u653b\u51fb\u8005\u5728\u7528\u6237\u540d\u5b57\u548c\u5bc6\u7801\u8f93\u5165\u6846\u4e2d\u8f93\u5165&#8217;\u6216&#8217;1&#8217;=&#8217;1\u4e4b\u7c7b\u7684\u5185\u5bb9\uff1b<\/p>\n<\/li>\n<li>\n<p>\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9\u63d0\u4ea4\u7ed9\u670d\u52a1\u5668\u4e4b\u540e\uff0c\u670d\u52a1\u5668\u8fd0\u884c\u4e0a\u9762\u7684\u4ee3\u7801\u6784\u9020\u51fa\u67e5\u8be2\u7528\u6237\u7684SQL\u547d\u4ee4\uff0c\u4f46\u7531\u4e8e\u653b\u51fb\u8005\u8f93\u5165\u7684\u5185\u5bb9\u975e\u5e38\u7279\u6b8a\uff0c\u6240\u4ee5\u6700\u540e\u5f97\u5230\u7684SQL\u547d\u4ee4\u53d8\u6210\uff1a<br \/>\nSELECT * from Users WHERE login = &#8221; or &#8216;1&#8217;=&#8217;1&#8242; AND password = &#8221; or &#8216;1&#8217;=&#8217;1&#8217;\uff1b<\/p>\n<\/li>\n<li>\n<p>\u670d\u52a1\u5668\u6267\u884c\u67e5\u8be2\u6216\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5c06\u7528\u6237\u8f93\u5165\u7684\u8eab\u4efd\u4fe1\u606f\u548c\u670d\u52a1\u5668\u4e2d\u4fdd\u5b58\u7684\u8eab\u4efd\u4fe1\u606f\u8fdb\u884c\u5bf9\u6bd4\uff1b<\/p>\n<\/li>\n<li>\n<p>\u7531\u4e8eSQL\u547d\u4ee4\u5b9e\u9645\u4e0a\u5df2\u88ab\u6ce8\u5165\u5f0f\u653b\u51fb\u4fee\u6539\uff0c\u5df2\u7ecf\u4e0d\u80fd\u771f\u6b63\u9a8c\u8bc1\u7528\u6237\u8eab\u4efd\uff0c\u6240\u4ee5\u7cfb\u7edf\u4f1a\u9519\u8bef\u5730\u6388\u6743\u7ed9\u653b\u51fb\u8005\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u5982\u679c\u653b\u51fb\u8005\u77e5\u9053\u5e94\u7528\u4f1a\u5c06\u8868\u5355\u4e2d\u8f93\u5165\u7684\u5185\u5bb9\u76f4\u63a5\u7528\u4e8e\u9a8c\u8bc1\u8eab\u4efd\u7684\u67e5\u8be2\uff0c\u4ed6\u5c31\u4f1a\u5c1d\u8bd5\u8f93\u5165\u67d0\u4e9b\u7279\u6b8a\u7684SQL\u5b57\u7b26\u4e32\u7be1\u6539\u67e5\u8be2\u6539\u53d8\u5176\u539f\u6765\u7684\u529f\u80fd\uff0c\u6b3a\u9a97\u7cfb\u7edf\u6388\u4e88\u8bbf\u95ee\u6743\u9650\u3002<\/p>\n<p>\u7cfb\u7edf\u73af\u5883\u4e0d\u540c\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u9020\u6210\u7684\u635f\u5bb3\u4e5f\u4e0d\u540c\uff0c\u8fd9\u4e3b\u8981\u7531\u5e94\u7528\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u5b89\u5168\u6743\u9650\u51b3\u5b9a\u3002\u5982\u679c\u7528\u6237\u7684\u5e10\u6237\u5177\u6709\u7ba1\u7406\u5458\u6216\u5176\u4ed6\u6bd4\u8f83\u9ad8\u7ea7\u7684\u6743\u9650\uff0c\u653b\u51fb\u8005\u5c31\u53ef\u80fd\u5bf9\u6570\u636e\u5e93\u7684\u8868\u6267\u884c\u5404\u79cd\u4ed6\u60f3\u8981\u505a\u7684\u64cd\u4f5c\uff0c\u5305\u62ec\u6dfb\u52a0\u3001\u5220\u9664\u6216\u66f4\u65b0\u6570\u636e\uff0c\u751a\u81f3\u53ef\u80fd\u76f4\u63a5\u5220\u9664\u8868<\/p>\n<p><strong>\u9632\u8303\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre><code>1.\u68c0\u67e5\u53d8\u91cf\u6570\u636e\u7c7b\u578b\u548c\u683c\u5f0f\n\n2.\u8fc7\u6ee4\u7279\u6b8a\u7b26\u53f7\n\n3.\u7ed1\u5b9a\u53d8\u91cf\uff0c\u4f7f\u7528\u9884\u7f16\u8bd1\u8bed\u53e5\n<\/code><\/pre>\n<h3>Session\u56fa\u5b9a\u653b\u51fb(Session Fixation)<\/h3>\n<p>\u8fd9\u79cd\u653b\u51fb\u65b9\u5f0f\u7684\u6838\u5fc3\u8981\u70b9\u5c31\u662f\u8ba9\u5408\u6cd5\u7528\u6237\u4f7f\u7528\u653b\u51fb\u8005\u9884\u5148\u8bbe\u5b9a\u7684session id\u6765\u8bbf\u95ee\u88ab\u653b\u51fb\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e00\u65e6\u7528\u6237\u7684\u4f1a\u8bddID\u88ab\u6210\u529f\u56fa\u5b9a\uff0c\u653b\u51fb\u8005\u5c31\u53ef\u4ee5\u901a\u8fc7\u6b64session id\u6765\u5192\u5145\u7528\u6237\u8bbf\u95ee\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p>\u4f8b\u5982:<\/p>\n<ol>\n<li>\u653b\u51fb\u8005\u8bbf\u95ee\u7f51\u7ad9http:\/\/\/www.bank.com\uff0c\u83b7\u53d6\u4ed6\u81ea\u5df1\u7684session id\uff0c\u5982\uff1aSID=123\uff1b<\/p>\n<\/li>\n<li>\n<p>\u653b\u51fb\u8005\u7ed9\u76ee\u6807\u7528\u6237\u53d1\u9001\u94fe\u63a5\uff0c\u5e76\u5e26\u4e0a\u81ea\u5df1\u7684session id\uff0c\u5982\uff1ahttp:\/\/\/www.bank.com\/?SID=123\uff1b<\/p>\n<\/li>\n<li>\n<p>\u76ee\u6807\u7528\u6237\u70b9\u51fb\u4e86http:\/\/\/www.bank.com\/?SID=123\uff0c\u50cf\u5f80\u5e38\u4e00\u6837\uff0c\u8f93\u5165\u81ea\u5df1\u7684\u7528\u6237\u540d\u3001\u5bc6\u7801\u767b\u5f55\u5230\u7f51\u7ad9\uff1b<\/p>\n<\/li>\n<li>\n<p>\u7531\u4e8e\u670d\u52a1\u5668\u7684session id\u4e0d\u6539\u53d8\uff0c\u73b0\u5728\u653b\u51fb\u8005\u70b9\u51fbhttp:\/\/\/www.bank.com\/?SID=123\uff0c\u4ed6\u5c31\u62e5\u6709\u4e86\u76ee\u6807\u7528\u6237\u7684\u8eab\u4efd\uff0c\u53ef\u4ee5\u4e3a\u6240\u6b32\u4e3a\u4e86\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u9632\u8303\u65b9\u6cd5\uff1a<\/p>\n<pre><code>1.\u5b9a\u671f\u66f4\u6539session id\nsession_regenerate_id(TRUE);\/\/\u5220\u9664\u65e7\u7684session\u6587\u4ef6\uff0c\u6bcf\u6b21\u90fd\u4f1a\u4ea7\u751f\u4e00\u4e2a\u65b0\u7684session id\u3002\u9ed8\u8ba4false\uff0c\u4fdd\u7559\u65e7\u7684session\n\n2.\u66f4\u6539session\u7684\u540d\u79f0\nsession\u7684\u9ed8\u8ba4\u540d\u79f0\u662fPHPSESSID\uff0c\u6b64\u53d8\u91cf\u4f1a\u4fdd\u5b58\u5728cookie\u4e2d\uff0c\u5982\u679c\u653b\u51fb\u8005\u4e0d\u6293\u5305\u5206\u6790\uff0c\u5c31\u4e0d\u80fd\u731c\u5230\u8fd9\u4e2a\u540d\u79f0\uff0c\u963b\u6321\u90e8\u5206\u653b\u51fb\nsession_name(\"mysessionid\");\n\n3.\u5173\u95ed\u900f\u660e\u5316session id\n\u900f\u660e\u5316session id\u6307\u5f53\u6d4f\u89c8\u5668\u4e2d\u7684http\u8bf7\u6c42\u6ca1\u6709\u4f7f\u7528cookie\u6765\u5236\u5b9asession id\u65f6\uff0csessioin id\u4f7f\u7528\u94fe\u63a5\u6765\u4f20\u9012\nint_set(\"session.use_trans_sid\", 0);\n\n4.\u53ea\u4ececookie\u68c0\u67e5session id\nint_set(\"session.use_cookies\", 1);\/\/\u8868\u793a\u4f7f\u7528cookies\u5b58\u653esession id\nint_set(\"session.use_only_cookies\", 1);\/\/\u8868\u793a\u53ea\u4f7f\u7528cookies\u5b58\u653esession id\n\n5.\u4f7f\u7528URL\u4f20\u9012\u9690\u85cf\u53c2\u6570\n$sid = md5(uniqid(rand()), TRUE));\n$_SESSION[\"sid\"] = $sid;\/\/\u653b\u51fb\u8005\u867d\u7136\u80fd\u83b7\u53d6session\u6570\u636e\uff0c\u4f46\u662f\u65e0\u6cd5\u5f97\u77e5$sid\u7684\u503c\uff0c\u53ea\u8981\u68c0\u67e5sid\u7684\u503c\uff0c\u5c31\u53ef\u4ee5\u786e\u8ba4\u5f53\u524d\u9875\u9762\u662f\u5426\u662fweb\u7a0b\u5e8f\u81ea\u5df1\u8c03\u7528\u7684\n<\/code><\/pre>\n<h3>Session\u52ab\u6301\u653b\u51fb(Session Hijacking)<\/h3>\n<p>\u4f1a\u8bdd\u52ab\u6301\u662f\u6307\u653b\u51fb\u8005\u5229\u7528\u5404\u79cd\u624b\u6bb5\u6765\u83b7\u53d6\u76ee\u6807\u7528\u6237\u7684session id\u3002\u4e00\u65e6\u83b7\u53d6\u5230session id\uff0c\u90a3\u4e48\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u76ee\u6807\u7528\u6237\u7684\u8eab\u4efd\u6765\u767b\u5f55\u7f51\u7ad9\uff0c\u83b7\u53d6\u76ee\u6807\u7528\u6237\u7684\u64cd\u4f5c\u6743\u9650\u3002<\/p>\n<p>\u653b\u51fb\u8005\u83b7\u53d6\u76ee\u6807\u7528\u6237session id\u7684\u65b9\u6cd5:<\/p>\n<ol>\n<li>\u66b4\u529b\u7834\u89e3:\u5c1d\u8bd5\u5404\u79cdsession id\uff0c\u76f4\u5230\u7834\u89e3\u4e3a\u6b62;<\/p>\n<\/li>\n<li>\n<p>\u8ba1\u7b97:\u5982\u679csession id\u4f7f\u7528\u975e\u968f\u673a\u7684\u65b9\u5f0f\u4ea7\u751f\uff0c\u90a3\u4e48\u5c31\u6709\u53ef\u80fd\u8ba1\u7b97\u51fa\u6765;<\/p>\n<\/li>\n<li>\n<p>\u7a83\u53d6:\u4f7f\u7528\u7f51\u7edc\u622a\u83b7\uff0cxss\u653b\u51fb\u7b49\u65b9\u6cd5\u83b7\u5f97<\/p>\n<\/li>\n<\/ol>\n<p>\u9632\u8303\u65b9\u6cd5\uff1a<\/p>\n<pre><code>  1.\u5b9a\u671f\u66f4\u6539session id\n\n  2.\u66f4\u6539session\u7684\u540d\u79f0\n\n  3.\u5173\u95ed\u900f\u660e\u5316session id\n\n  4.\u8bbe\u7f6eHttpOnly\u3002\u901a\u8fc7\u8bbe\u7f6eCookie\u7684HttpOnly\u4e3atrue\uff0c\u53ef\u4ee5\u9632\u6b62\u5ba2\u6237\u7aef\u811a\u672c\u8bbf\u95ee\u8fd9\u4e2aCookie\uff0c\u4ece\u800c\u6709\u6548\u7684\u9632\u6b62XSS\u653b\u51fb\u3002\n<\/code><\/pre>\n<h3>\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u653b\u51fb(File Upload Attack)<\/h3>\n<p>\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u6307\u653b\u51fb\u8005\u5229\u7528\u7a0b\u5e8f\u7f3a\u9677\u7ed5\u8fc7\u7cfb\u7edf\u5bf9\u6587\u4ef6\u7684\u9a8c\u8bc1\u4e0e\u5904\u7406\u7b56\u7565\u5c06\u6076\u610f\u4ee3\u7801\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u5e76\u83b7\u5f97\u6267\u884c\u670d\u52a1\u5668\u7aef\u547d\u4ee4\u7684\u80fd\u529b\u3002<\/p>\n<p><strong>\u5e38\u7528\u7684\u653b\u51fb\u624b\u6bb5\u6709\uff1a<\/strong><\/p>\n<p>\u4e0a\u4f20Web\u811a\u672c\u4ee3\u7801\uff0cWeb\u5bb9\u5668\u89e3\u91ca\u6267\u884c\u4e0a\u4f20\u7684\u6076\u610f\u811a\u672c\uff1b<\/p>\n<p>\u4e0a\u4f20Flash\u8de8\u57df\u7b56\u7565\u6587\u4ef6crossdomain.xml\uff0c\u4fee\u6539\u8bbf\u95ee\u6743\u9650(\u5176\u4ed6\u7b56\u7565\u6587\u4ef6\u5229\u7528\u65b9\u5f0f\u7c7b\u4f3c)\uff1b<\/p>\n<p>\u4e0a\u4f20\u75c5\u6bd2\u3001\u6728\u9a6c\u6587\u4ef6\uff0c\u8bf1\u9a97\u7528\u6237\u548c\u7ba1\u7406\u5458\u4e0b\u8f7d\u6267\u884c\uff1b<\/p>\n<p>\u4e0a\u4f20\u5305\u542b\u811a\u672c\u7684\u56fe\u7247\uff0c\u67d0\u4e9b\u6d4f\u89c8\u5668\u7684\u4f4e\u7ea7\u7248\u672c\u4f1a\u6267\u884c\u8be5\u811a\u672c\uff0c\u7528\u4e8e\u9493\u9c7c\u548c\u6b3a\u8bc8\u3002<\/p>\n<p>\u603b\u7684\u6765\u8bf4\uff0c\u5229\u7528\u7684\u4e0a\u4f20\u6587\u4ef6\u8981\u4e48\u5177\u5907\u53ef\u6267\u884c\u80fd\u529b(\u6076\u610f\u4ee3\u7801)\uff0c\u8981\u4e48\u5177\u5907\u5f71\u54cd\u670d\u52a1\u5668\u884c\u4e3a\u7684\u80fd\u529b(\u914d\u7f6e\u6587\u4ef6)\u3002<\/p>\n<p><strong>\u9632\u8303\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre><code>  1.\u6587\u4ef6\u4e0a\u4f20\u7684\u76ee\u5f55\u8bbe\u7f6e\u4e3a\u4e0d\u53ef\u6267\u884c\uff1b\n\n  2.\u5224\u65ad\u6587\u4ef6\u7c7b\u578b\uff0c\u8bbe\u7f6e\u767d\u540d\u5355\u3002\u5bf9\u4e8e\u56fe\u7247\u7684\u5904\u7406\uff0c\u53ef\u4ee5\u4f7f\u7528\u538b\u7f29\u51fd\u6570\u6216\u8005resize\u51fd\u6570\uff0c\u5728\u5904\u7406\u56fe\u7247\u7684\u540c\u65f6\u7834\u574f\u56fe\u7247\u4e2d\u53ef\u80fd\u5305\u542b\u7684HTML\u4ee3\u7801\uff1b\n\n  3.\u4f7f\u7528\u968f\u673a\u6570\u6539\u5199\u6587\u4ef6\u540d\u548c\u6587\u4ef6\u8def\u5f84\uff1a\u4e00\u4e2a\u662f\u4e0a\u4f20\u540e\u65e0\u6cd5\u8bbf\u95ee\uff1b\u518d\u6765\u5c31\u662f\u50cfshell.php.rar.rar\u548ccrossdomain.xml\u8fd9\u79cd\u6587\u4ef6\uff0c\u90fd\u5c06\u56e0\u4e3a\u91cd\u547d\u540d\u800c\u65e0\u6cd5\u653b\u51fb\uff1b\n\n  4.\u5355\u72ec\u8bbe\u7f6e\u6587\u4ef6\u670d\u52a1\u5668\u7684\u57df\u540d\uff1a\u7531\u4e8e\u6d4f\u89c8\u5668\u540c\u6e90\u7b56\u7565\u7684\u5173\u7cfb\uff0c\u4e00\u7cfb\u5217\u5ba2\u6237\u7aef\u653b\u51fb\u5c06\u5931\u6548\uff0c\u6bd4\u5982\u4e0a\u4f20crossdomain.xml\u3001\u4e0a\u4f20\u5305\u542bJavascript\u7684XSS\u5229\u7528\u7b49\u95ee\u9898\u5c06\u5f97\u5230\u89e3\u51b3\u3002\n<\/code><\/pre>\n<h3>CC\u653b\u51fb\uff08Challenge Collapsar\uff09<\/h3>\n<p>\u662fDDOS\uff08\u5206\u5e03\u5f0f\u62d2\u7edd\u670d\u52a1\uff09\u7684\u4e00\u79cd\uff0c\u4e5f\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u7f51\u7ad9\u653b\u51fb\u65b9\u6cd5\uff0c\u653b\u51fb\u8005\u901a\u8fc7\u4ee3\u7406\u670d\u52a1\u5668\u6216\u8005\u8089\u9e21\u5411\u5411\u53d7\u5bb3\u4e3b\u673a\u4e0d\u505c\u5730\u53d1\u5927\u91cf\u6570\u636e\u5305\uff0c\u9020\u6210\u5bf9\u65b9\u670d\u52a1\u5668\u8d44\u6e90\u8017\u5c3d\uff0c\u4e00\u76f4\u5230\u5b95\u673a\u5d29\u6e83\u3002<\/p>\n<p><strong>\u9632\u8303\u63aa\u65bd\uff1a<\/strong><br \/>\n\u786e\u5b9aWeb\u670d\u52a1\u5668\u6b63\u5728\u6216\u8005\u66fe\u7ecf\u906d\u53d7CC\u653b\u51fb\uff0c\u90a3\u5982\u4f55\u8fdb\u884c\u6709\u6548\u7684\u9632\u8303\u5462?<\/p>\n<pre><code>1.\u53d6\u6d88\u57df\u540d\u7ed1\u5b9a\n\u4e00\u822ccc\u653b\u51fb\u90fd\u662f\u9488\u5bf9\u7f51\u7ad9\u7684\u57df\u540d\u8fdb\u884c\u653b\u51fb\uff0c\u6bd4\u5982\u6211\u4eec\u7684\u7f51\u7ad9\u57df\u540d\u662f\u201cwww.abc.com\u201d\uff0c\u90a3\u4e48\u653b\u51fb\u8005\u5c31\u5728\u653b\u51fb\u5de5\u5177\u4e2d\u8bbe\u5b9a\u653b\u51fb\u5bf9\u8c61\u4e3a\u8be5\u57df\u540d\u7136\u540e\u5b9e\u65bd\u653b\u51fb\u3002 \u5bf9\u4e8e\u8fd9\u6837\u7684\u653b\u51fb\u6211\u4eec\u7684\u63aa\u65bd\u662f\u53d6\u6d88\u8fd9\u4e2a\u57df\u540d\u7684\u7ed1\u5b9a\uff0c\u8ba9CC\u653b\u51fb\u5931\u53bb\u76ee\u6807\u3002\n\n2.\u57df\u540d\u6b3a\u9a97\u89e3\u6790\n\u5982\u679c\u53d1\u73b0\u9488\u5bf9\u57df\u540d\u7684CC\u653b\u51fb\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u88ab\u653b\u51fb\u7684\u57df\u540d\u89e3\u6790\u5230127.0.0.1\u8fd9\u4e2a\u5730\u5740\u4e0a\u3002\u6211\u4eec\u77e5\u9053127.0.0.1\u662f\u672c\u5730\u56de\u73afIP\u662f\u7528\u6765\u8fdb\u884c\u7f51\u7edc\u6d4b\u8bd5\u7684\uff0c\u5982\u679c\u628a\u88ab\u653b\u51fb\u7684\u57df\u540d\u89e3\u6790\u5230\u8fd9\u4e2aIP\u4e0a\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u653b\u51fb\u8005\u81ea\u5df1\u653b\u51fb\u81ea\u5df1\u7684\u76ee\u7684\uff0c\u8fd9\u6837\u4ed6\u518d\u591a\u7684\u8089\u9e21\u6216\u8005\u4ee3\u7406\u4e5f\u4f1a\u5b95\u673a\uff0c\u8ba9\u5176\u81ea\u4f5c\u81ea\u53d7\u3002\n\n3.\u66f4\u6539Web\u7aef\u53e3\n\u4e00\u822c\u60c5\u51b5\u4e0bWeb\u670d\u52a1\u5668\u901a\u8fc780\u7aef\u53e3\u5bf9\u5916\u63d0\u4f9b\u670d\u52a1\uff0c\u56e0\u6b64\u653b\u51fb\u8005\u5b9e\u65bd\u653b\u51fb\u5c31\u4ee5\u9ed8\u8ba4\u768480\u7aef\u53e3\u8fdb\u884c\u653b\u51fb\uff0c\u6240\u4ee5\uff0c\u6211\u4eec\u53ef\u4ee5\u4fee\u6539Web\u7aef\u53e3\u8fbe\u5230\u9632CC\u653b\u51fb\u7684\u76ee\u7684\u3002\u8fd0\u884cIIS\u7ba1\u7406\u5668\uff0c\u5b9a\u4f4d\u5230\u76f8\u5e94\u7ad9\u70b9\uff0c\u6253\u5f00\u7ad9\u70b9\u201c\u5c5e\u6027\u201d\u9762\u677f\uff0c\u5728\u201c\u7f51\u7ad9\u6807\u8bc6\u201d\u4e0b\u6709\u4e2aTCP\u7aef\u53e3\u9ed8\u8ba4\u4e3a80\uff0c\u6211\u4eec\u4fee\u6539\u4e3a\u5176\u4ed6\u7684\u7aef\u53e3\u5c31\u53ef\u4ee5\u4e86\u3002\n\n4.\u5c4f\u853dIP\n\u6211\u4eec\u901a\u8fc7\u547d\u4ee4\u6216\u5728\u67e5\u770b\u65e5\u5fd7\u53d1\u73b0\u4e86CC\u653b\u51fb\u7684\u6e90IP\uff0c\u5c31\u53ef\u4ee5\u5728\u9632\u706b\u5899\u4e2d\u8bbe\u7f6e\u5c4f\u853d\u8be5IP\u5bf9Web\u7ad9\u70b9\u7684\u8bbf\u95ee\uff0c\u4ece\u800c\u8fbe\u5230\u9632\u8303\u653b\u51fb\u7684\u76ee\u7684\u3002\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>XSS (Cross Site Scripting \u8de8\u7f51\u7ad9\u811a\u672c\u653b\u51fb) \u653b\u51fb\u8005\u5c06\u6076\u610f\u4ee3\u7801\u6ce8\u5165\u5230\u7f51\u9875\u4e0a\uff0c\u5176\u4ed6\u7528\u6237\u5728 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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