xss filter

embed malicious JavaScript, for example, you can obtain the javascript: document. cookie and so on. The other is that the area that supports rich text does not filter malicious JavaScript, such as the blogArticleAttackers can obtain malicious javascript such as cookies embedded in the content.CodeThese two types of phenomena are too many. On the contrary, the rich text area will be better, for example, UBB used in most forums. In addition, everyone w

is offering shit. View the source code function, resulting in the inability to unify the In this case, I can only filter part of the look-up is a harmful HTML tags, and it is well known that such blacklist verification is not safe. /* * Cross-site scripting (XSS) is a type of computer security vulnerability * Typically found in Web applications. XSS enables at

APIs for reading data may exist in the Web application code, such as Request. queryString (), $ _ GET, etc. If these APIS exist, it indicates that XSS injection may be introduced. Through static analysis tools, we can easily find all the APIs that read data, and check whether XSS injection is filtered for each data input point in detail. As you can see, static analysis only helps us locate XSSPossible loca

Stored on the server or database, many victims are victims. Scenario 2: A.com can post an article. After I log on to a.com, I published an article in a.com, which contains malicious code. to save the article. At this time, Tom and Jack saw my published article. When I checked my article, they all caught up. Their cookie information was sent to my server, and the attack was successful! In this process, there are multiple victims.The Stored XSS vulner

This article is from: Gao Shuang | coder. Original article address: http://blog.csdn.net/ghsau/article/details/17027893. Please note.XSS, also known as CSS, is short for cross sitescript. It is a common vulnerability in web programs. XSS is a passive and used for client attacks, so it is easy to ignore its dangers. The principle is that attackers input (pass in) malicious HTML code to a website with the XSS

executes the script on the victim's computer.So, what is the XSS vulnerability?As a web developer or tester, you know that the technical underpinnings of Web applications are made up of HTTP and HTML. The HTTP protocol is the transport mechanism for HTML, and you can use code to design Web page layouts and build pages.If the WEB application accepts input from a user through an HTTP request, such as GET or POST, and then uses the output HTML code to d

on JavaScript and HTML tags (sometimes with a CSS-style XSS vector).There are generally four ways to do this: Page label comes with script Dom property comes with script Request address comes with script Enter blank break filter limit Give two little plums:The means of XSS attack defenseBecause the root of

There are many ways to launch XSS attacks on a Web site, and just using some of the built-in filter functions of PHP is not going to work, even if you will Filter_var,mysql_real_escape_string,htmlentities,htmlspecialchars , strip_tags These functions are used and do not necessarily guarantee absolute security. So how to prevent XSS injection? The main still need

WEB security: Introduction and solutions to XSS and SQL Injection Vulnerabilities1. Cross-site scripting (XSS) How XSS attacks work XSS, also known as CSS (Cross Site Script), is a Cross-Site scripting attack. It indicates that a malicious attacker inserts malicious script code into a Web page, and the program does not

Read Catalogue Types and characteristics of XSS XSS Prevention Summarize XSS, also known as Cross site Scripting, is the focus of XSS not across sites, but in the execution of scripts. With the development of Web front-end applications, XSS vulnerabilit

text file (do not have any space or line breaks before) and use IE6 to open it (no malicious code, just a demo ):+/V8 + ADw-script + AD4-alert (document. location) + ADw-/script + AD4- The most common method is the application of JSONP. The solution is to filter out all non-letter and digit underline characters. there is also a way to output space or line feed at the beginning of the page, so that the UTF7-XSS