Advisory Name: Liferay Cross Site Scripting flaw Release Date: 05/22/2004 Application: Liferay (www.liferay.com) Author: Sandeep Giri Vendor Status: Notified ( 4 months ago) Overview: (Taken from http://www.liferay.com/products/index.jsp) Liferay Enterprise Portal was designed to: Provide organizations with a single sign-on web interface for email, document management, message board, and other useful communication tools. Multiple authentication schemes (LDAP or SQL) are pooled together so users don't have to remember a different login and password for every section of the portal. ... Details: Liferay is prone to cross site scripting flaw. Almost all the fields that takes input from one user and are displayed on another user's screen can be tricked to execute java script code. Test: Add a message with subject <script>history.go(-1)</script> Now, no user can see message board. Vendor Response: Vendor was notified on 14/01/2004. No fix have been released yet. Recommendation: While saving or displaying the data: replace &,<,> etc with &,< and > respectively. Regards, Sandeep Giri