Cross-Site Scripting: An attack method that involves injection of code or markup into a webpage. There are three major types of XSS: Reflected XSS, Stored XSS (aka persistent XSS), DOM-based XSS (aka client side XSS).

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182 views

Is there a need to have XSS filters when I'm saving data as XML?

My web-app takes some configs from the user and saves into an XML file (it was not done to stop XSS). The input is XML encoded so that the ",& ... and such characters don't break the XML ...
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2answers
92 views

How can I bypass double quotes in a attribute based xss attack

The code that I have is: <input type="text" name="some_name" value="<?php echo CHtml::encode($str); ?>" /> $str is the input data. 'CHtml::encode()' is Yii's way of encoding special ...
4
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1answer
86 views

How can document.referrer be used for XSS?

A very simple example... <div id="cat"></div> <script> document.getElementById("cat").innerHTML = document.referrer; </script> or <script src="' + document.referrer + ...
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1answer
42 views

Understanding cross origing requests from a web page

Reading up the XSS attacks on wiki I see that it says an injected script could send data/cookies to the attackers site. How is this achieved? Are there no checks/restrictions on cross origin requests ...
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1answer
52 views

Basic Website Protection (XSS,SQL-inject,hashing)

I have a very simple app that does allow unauthenticated users to leave comments (maybe later I will incorporate a capatcha). The app then stores the comments in a mysql db. I do my best to filter out ...
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1answer
100 views

Can running a script while logged in compromise my facebook password?

In websites related to facebook malware analysis and information, we often see messages to the effect of if you have run this facebook app then your account has been compromised, or if you went to ...
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1answer
49 views

<,>,/ etc symbols are getting escaped while trying for xss,anyother alternatives for these symbols to carry out the attack successfully?

Symbols like >, <, / etc are getting escaped any alternative to carry out the xss attack ? most of the websites are having xss filters
2
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0answers
212 views

Content-Security-Policy & Facebook login

This question seems to be related to http://stackoverflow.com/questions/15913200/facebook-js-sdk-not-executed-in-my-chrome-extension , but I am not developing a chrome extension. I am developing a ...
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0answers
78 views

How did the Tweetdeck XSS Vulnerability work

How exactly did the recent TweetDeck vulnerability work? It says here that it had something to do with the HTML heart character but I don't fully understand what the explanation means. From the link : ...
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0answers
79 views

XSS Vectors for new Image()

What are possible XSS vectors to this JavaScript code new Image().src = encodeURI('[user url here]'); Let's assume two cases: [user url here] is some string provided by user (with no validation) ...
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0answers
138 views

XSS in HTML title tag without forward slash

I am trying to find out whether this is vulnerable against XSS: I can control the content of the title tag through the URL. This would make the site vulnerable if it wasn't for the fact that the site ...
1
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0answers
93 views

Hacking attempts:in.js

A client of mine keeps getting hacked by seemingly SQL injection where a script tag containing a link to an "in.js" file is added. Sometimes from a domain called sportserve.co.uk, other times from ...
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0answers
137 views

Can a Java servlet filter be used to pull out scripts that aren't whitelisted?

I might be asking a similar question to this: Whitelisting DOM elements to defeat XSS But I think my proposed solution is different and I was wondering if I could get the community to comment on ...
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0answers
34 views

Possible cross site scripting vulnerability caused by url_with_protocol

I used pullreview to review my project. It came back with a security concern ( Possible cross site scripting vulnerability) on this line: link_to portfolio.website, ...
0
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0answers
32 views

securing my API: concept of accesstokens

first of all I want to excuse for the bad spelling and grammar. English is not my mothertongue. I have built a JSON communication between frontend(website) and my NodeJS webserver. I want to keep in ...
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0answers
201 views

How safe is Apache's Commons StringEscapeUtils.escapeXml function to prevent XSS

I am using escapeXML StringEscapeUtils.escapeXml to prevent XSS in my Java application. But I am wondering if it resolves XSS to the fullest. I have tried some XSS attack vectors, and escapeXml seems ...
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0answers
45 views

DOM based XSS manual testing

How can firebug be used to inspect DOM of web application and find the vulerable location for DOM xss?