liscker has discovered a vulnerability in BBSXP, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input appended to the URL after e.g. AddPost.asp, AddTopic.asp, Admin_Default.asp, Bank.asp, Manage.asp, and ShowPost.asp is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in the context of an affected site.
The vulnerability is confirmed in version 2008 SP2. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly sanitised.
Provided and/or discovered by: liscker
Original Advisory: http://archives.neohapsis.com/archives/bugtraq/2010-03/0049.html
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Subject: BBSXP Cross-Site Scripting Vulnerability
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