--[ ICQ Portal multiple Cross Site Scripting vulnerability ]--
Problem discovered: 19/09/2001 by Cabezon Aurélien |
aurelien.cabezon@iSecureLabs.com | http://www.iSecureLabs.com

--[ Overview ]--

The icq portal suffer from multiple Cross Site Scripting Vulnerability. http://www.icq.com

-- [ Description ]--

ICQ web portal may inadvertently include malicious HTML tags or script in a dynamically generated page based on unvalidated input from untrustworthy sources.

This can be a problem when a web server does not adequately ensure that generated pages are properly encoded to prevent unintended execution of scripts, and when input from a form is not validated to prevent malicious HTML from being presented to the user.

This search script http://search.icq.com/dirsearch.adp does not check anymore for malicious HTML or Java Script code.

Exemple 1
http://search.icq.com/dirsearch.adp?query=<h1>Hello</h1><script>alert('hello ');</script>est&wh=is&users=1

Screen Shots:
http://www.isecurelabs.com/advisory/icq1.jpg
http://www.isecurelabs.com/advisory/icq2.jpg

Exemple 2
http://web.icq.com/foo/<script>alert('hello');</script>;

Scree Shots:
http://www.isecurelabs.com/advisory/icq3.jpg
http://www.isecurelabs.com/advisory/icq4.jpg

--[ Fix ]-- ICQ Team has been alerted

--[ Informations about CSS ]--


http://httpd.apache.org/info/css-security/apache_specific.html
http://www.cert.org/advisories/CA-2000-02.html

---
Cabezon Aurélien | aurelien.cabezon@iSecureLabs.com
http://www.iSecureLabs.com | French Security Portal
http://www.isecurelabs.com/advisory/icq-css.html