interface in 4, it is important to remember to perform HTML escape, after the execution of JS escape.6, about Eval () and non-trusted data.7, limit the non-trusted data only as the right value operation. As the left value can be executed, for example location ,eval()
var x = "
8. URL escaping in the DOM requires attention to character set issues.9, Limit access to the properties objects when
beginners to learn more.
The reasons for DOM based XSS are as follows:
A) Dirty data input B) Dirty data output
Location document. write (ln)
Document. referrer innerHTML =
Window. name outterHTML =
Ajax response write window. location operation
Jsonp write javascript: (custom content after pseudo-Protocol)
Directly execute the inputs box eval, setTimeout, and
Original: http://www.anying.org/thread-36-1-1.html reprint must indicate the original addressLately I've seen a lot of people on the internet talking about XSS. I'm going to publish my own understanding of this piece by using the shadow platform.In fact, many people are aware of the use of XSS, but many people have overlooked the reason for the existence of loopholes, in fact, the truth is that
see, there are things which are false positives, for example the first two linesPaymentAttemptList. js:The variable assignments are static values.
Other things instead look interesting and deserve additional manual analysis, like whereEval,SetTimeout, OrReplaceAre used. the next step is opening all the JavaScript code in a proper IDE (if it's really complex ), go to the matched line and start manual analysis tracking back all the function cballs and
How to Use Dominator to discover DOM-based XSS vulnerabilities on Nokia Official Website
Background
DOM-based XSS (Cross-Site Scripting) vulnerabilities are generally difficult to find. In this article, the author uses Dominator
Baidu consortium code defects cause dom xss to exist for websites promoted by Baidu (in Tianya, 58 cities, and Ganji as an example)
The http://cpro.baidustatic.com/cpro/ui/c.js file is called with the following code:
Y Y("union/common/logic", [], function() { return {ze: function(e) { (e = e || "") (e = e.replace(/%u[\d|\w]{4}/g, function(
This article mainly introduces the method of javascript permission Selection Based on DOM. The example analyzes the related skills of javascript in page element selection and deletion operations, which is very useful, for more information about how to select permissions based on DO
This article mainly introduces how to create an xml document based on DOM in PHP, and analyzes the related operation skills of using DOM to create an xml file in php in the form of examples, for more information about how to create an xml document in PHP based on DOM, see th
Example of how PHP creates an xml document based on DOM and domxml document
This example describes how to create an xml document based on DOM in PHP. We will share this with you for your reference. The details are as follows:
Php dom-based library xml format data example, domxml
This document describes the xml format of books implemented by php Based on dom. We will share this with you for your reference. The details are as follows:
The running result is as follows:
PS: Here are some online too
, I just wanted to say hello to the machine man like irc. Then I thought about irc's time. I can still use the plug-in directly on the plug-in, as long as I have logged on to the plug-in, I use IE (
Throughout the entire process, I always thought of the concept of "DOM-based sandboxing. XSS (cross-site scripting, cross-site scripting vulnerability) should not be
=" alert (document.cookie), then it becomes
The embedded JavaScript code will be executed when the event is triggered
The power of the attack depends on what kind of script the user has entered
Of course, the data submitted by the user can also be sent to the server via QueryString (placed in the URL) and cookies. For example, the following figure
HTML Encode
XSS occurs because the data entered by
Comments: The harm caused by Xss. we all realized that csrf, Trojan, cookies, ajax, xssshell, and various exploitation methods starting with Xss .... the harm caused by Xss has been noticed by mavericks that csrf, Trojan, cookies, ajax, and xssshell are also exploited ....Most of the information we usually find stays on direct input and output, which is usually e
This article illustrates the YII2 's XSS attack prevention strategy. Share to everyone for your reference, specific as follows:
XSS Vulnerability Fixes
Principle: Do not trust the data entered by the customerNote: The attack code is not necessarily in
① marks an important cookie as HTTP only, so that the Document.cookie statement in JavaScript will not get a cookie.② only allows the user to enter the da
1, installation
Htmlpurifier is a rich text HTML filter based on PHP that we can use to prevent XSS cross-site attacks, and for more information on Htmlpurifier, please refer to its official website: http://htmlpurifier.org/. Purifier is an expansion pack that integrates htmlpurifier in Laravel 5, and we can install this expansion pack through Composer:
Composer require Mews/purifier
After the installati
Xss is very popular now. in addition, xss tools are everywhere. As a result, just like sqlinj, many websites are hard to find obvious xss bugs. In the past, we used to search for xss in black boxes, and the results were very obvious, for white boxes, it is generally based on
When we access a webpage, we add parameters after the URL. The server constructs different HTML responses based on the request parameter values. For example, http: // localhost: 8080/prjWebSec/xss/reflectedXSS. jsp? Param = value... in the preceding example, the value may appear in the returned HTML (which may be the c
browser converts the HTML and CSS provided to it into a tree structure that represents a single webpage. All the DOM principles I 've been discussing so far will be used in this tutorial to create a dom-based dynamic web page that can work (although a little simple. If you don't know anything, you can stop and review the previous two articles at any time before
Jquery-based DOM operations
Dom is short for Document Object Model, which means Document Object Model. DOM is an interface unrelated to browsers, platforms, and languages. You can use this interface to easily access all the standard components on the page. DOM operations can
DOM (DocumentObjectModel) is a Document Object Model. APIs for HTML and XML documents (application interfaces) are provided ). This article introduces the common APIs for javascript operations on dom. If you are interested in javascriptdomapi, join us.
Preface
DOM (Document Object Model) is a Document Object Model. It is an API (application interface) for HTML a
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