mambo45.txt

2004-03-17T00:00:00
ID PACKETSTORM:32883
Type packetstorm
Reporter James Bercegay
Modified 2004-03-17T00:00:00

Description

                                        
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Vendor : Mambo Open Source  
URL : http://www.mamboserver.com  
Version : Mambo Open Source 4.5 Stable 1.0.3 && Earlier  
Risk : Multiple Vulnerabilities  
  
  
  
Description:  
Mambo Open Source is the finest open source Web Content Management System   
available today. Mambo Open Source makes communicating via the Web easy.   
Have you always wanted to have your own site but never understood how? Well   
Mambo Open Source is just the ticket! With Mambo Open Source there is no   
need for HTML, XML or DHTML skills, just enter your content, add a picture   
and then through the easy to use administrator web-interface ...click   
Publish! Simple ... Quick ... And easy! With the in-built editor Mambo Open   
Source allows you to design and create your content without the need for HTML   
code. Maintaining a website has never been easier.   
  
  
  
Cross Site Scripting:  
There are a few variables that will allow for XSS (cross site scripting) on   
most pages of a Mambo Open Source Installation. The variables in question are   
"return", and the "mos_change_template" variable. Below are some examples of   
these mentioned XSS problems in action.  
  
index.php?return=[XSS]  
index.php?mos_change_template=[XSS]  
  
The "return" variable is just the contents of the url, so it allows you to   
pass pretty much any junk to the url and have it printed straight to the page   
without being validated. This takes place on almost EVERY page within MOS  
  
  
  
SQL Injection && Query Tampering:  
It is possible for an attacker or malicious user to influence SQL queries by   
altering the "id" variable. The below examples is not malicious so they will   
just trigger an error. The query gets passed near   
  
"SELECT title FROM mos_categories WHERE id=[SQL]" in "pathway.php"  
  
Please note that this vuln is also likely to exist in other places as well.  
  
[VID] = A vaild id relating to the resource  
[SQL] = An SQL query that's to be executed   
  
index.php?option=content&task=view&id=[SQL]&Itemid=[VID]  
index.php?option=content&task=category&sectionid=[VID]&id=[SQL]&Itemid=[VID]  
index.php?option=content&task=category&sectionid=[VID]&id=[SQL]&Itemid=[VID]  
  
  
------[ Start Example Of Vuln Code ]------------------------------------------  
  
if ($id) {  
$database->setQuery( "SELECT title FROM #__categories WHERE id=$id" );  
$title = $database->loadResult();  
echo $database->getErrorMsg();  
  
$id = max( array_keys( $mitems ) ) + 1;  
$mitem = pathwayMakeLink(  
$id,  
$title,  
"index.php?option=$option&task=$task&id=$id&Itemid=$Itemid",  
$Itemid  
);  
$mitems[$id] = $mitem;  
$Itemid = $id;  
}  
  
------[ Ends Example Of Vuln Code ]-------------------------------------------  
  
As you can see in this code snip from pathway.php, the variable $id is passed   
directly into the query without any sort of real validation. This is however   
resolved in the newly updated version of Mambo Open Source by requiring $id to be   
validated via the intval() function. That way it only returns a valid integer and   
thus prevents SQL injection from happening.  
  
  
  
Solution:  
Special thanks goes to Robert Castley for his very prompt, and professional response,   
and for the genuine concern regarding the security of Mambo Open Source server. A new   
version of the Mambo Open Source package is now available from their official website  
and should be applied soon as possible. Advisory @ http://www.gulftech.org/03162004.php  
  
  
  
Credits:  
Credits go to JeiAr of the GulfTech Security Research Team.   
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