xss example

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

Xss(cross-site scripting)An attack refers to an attacker inserting a malicious tag or code into a Web page html javascript . For example, an attacker would put a user in a forumSeemingly secure links that steal users ' private information from a user's clicks, or an attacker who adds a malicious form to the forum,When the user submits the form, it transmits the information to the attacker's server, rather t

page is executed normally, in addition, the generated HTML code contains some parts that can be entered by the user. This is where the terror lies. Don't underestimate the "A = 1". If you replace it with a piece of js code, it is more dangerous, such as calling this method: Http ://... /Test. php/% 22% 3E % 3 cscript % 3 ealert ('xss') % 3C/script % 3E % 3 cfooHave you seen the effect of alert function execution in JS? Check the generated HTML source

1. in this example (which has already been supplemented), we hope you will also understand that the XSS context is important and how to properly construct it based on the context, using unfiltered characters, it is the key to success (there must be enough cumbersome ideas) Http://www.discuz.net/connect.php? Receive = yes mod = login op = callback referer = aaaaaaaaa oauth_token = 17993859178940955951 o

a use example, from the use of the example slowly dissect John this artwork.Console.log (Tmpl ("// You must add a semicolon after print to separateThe specific syntax is not much explained, and underscore template Library basically consistent, we can refer to: http://underscorejs.org/#templateChrome runs and will get:There are 2 features used here, one is So, let's take a closer look at the template Tmpl f

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

This article describes the following issues:1. Repeat Encoding2. Multiple encoding formats3. Several FAQs about Encoding[Description]The encoding described in this article refers to encode, which can be understood as escape, rather than programming code.The encoding or escape mechanism solves two problems for us:A. Avoid reserved word conflicts. For web applications, XSS is also one of the problems.B. The problem of expressing non-input characters. Fo

Significance of six: 1. permission restrictions are always reassuring, such as backend and Intranet ..... In addition, some programs officially deny the danger of background vulnerabilities. For example, * vbbs's attitude towards the previous data backup to get shell. Indeed, such a vulnerability is hard to be exploited directly due to permission restrictions. Like the above situation, XSS is often ignored

The prevention of cross-site PHP and XSS attacks has long been discussed, and many PHP sites in China have discovered XSS vulnerabilities. I accidentally saw an XSS vulnerability in PHP5 today. here is a summary. By the way, it is recommended that you use PHP5 to install a patch or upgrade it. If you don't know what XSS