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Simple Machines Forum (SMF) XSS issue
From: josecarlos.norte () gmail com
Date: 20 Oct 2006 14:30:11 -0000


title: Simple Machines Forum (SMF) XSS issue
author: Jose Carlos Norte
discovered by: Jose Carlos Norte

1. introduction

Simple machines forum is a popular scalable free bulletin board system written in php over mysql database, the url of 
the project:

http://www.simplemachines.org/

2. XSS problem

SMF is vulnerable to XSS attacks in search functions, in a string passed in base64 to search for re-fill the form 
search when we want to modify our search.

example:

index.php?action=search;params=bWF4YWdlfCd8Ij5YU1N8InxicmR8J3x8InxzaG93X2NvbXBsZXRlfCd8fCJ8c3ViamVjdF9vbmx5fCd8fCJ8c2VhcmNofCd8c3NzfCJ8c29ydF9kaXJ8J3xkZXNjfCJ8c29ydHwnfHJlbGV2YW5jZQ

there are diferent fields vulnerable and a XSS successfull attack is posible, tested.

Solution:

i was unable to contact smf developer team.


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