Microsoft ASP.NET 1.0/1.1 - Unicode Character Conversion Multiple Cross-Site Scripting Vulnerabilities

Author: Andrey Rusyaev
type: webapps
platform: asp
port: 
date_added: 2005-02-16 
date_updated: 2013-05-01 
verified: 1 
codes: CVE-2005-0452;OSVDB-13927 
tags: 
aliases:  
screenshot_url:  
application_url: 

source: https://www.securityfocus.com/bid/12574/info

It is reported that ASP.NET is prone to various cross-site scripting attacks. These issues when ASP.NET converts Unicode characters ranging from U+ff00-U+ff60 to ASCII.

Apparently, the application fails to properly validate Unicode characters allowing an attacker to craft a malicious link containing arbitrary HTML or script code to be executed in a user's browser.

This can facilitate theft of cookie-based credentials and other attacks.

http://www.example.com/attack1.aspx?test=%uff1cscript%uff1ealert('vulnerability')%uff1c/script%uff1e