bugtraq - Mambo 4.5.2.2 SQL Injection in UPDATE statement

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Date: Wed, 15 Jun 2005 17:54:39 +0800
From: pokley <pokleyzz@...n-associates.net>
To: "bugtraq@...urityfocus.com" <bugtraq@...urityfocus.com>,
	"full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>
Subject: Mambo 4.5.2.2 SQL Injection in UPDATE statement

Product : Mambo 4.5.2.2 (http://www.mamboserver.com)
Summary: Mambo 4.5.2.2 and below SQL Injection in UPDATE statement
Severity: Low

Description
===========
Mambo is a full-featured management system that can be used for everything  
 from simple websites to complex corporate applications.

Details
=======
We have found uncritical sql injection vulnerability in com_contents  
component when user vote for the content.

  -- content.php --

  100             case 'vote':
  101                     recordVote ( $url , $user_rating , $cid ,  
$database);
  102                     break;
  ...
  1478                                    $query = "UPDATE  
#__content_rating"
  1479                                    . "\n SET rating_count =  
rating_count + 1,"
  1450                                    . "\n rating_sum = rating_sum  
+ $user_rating,"
  1451                                    . "\n lastip = '$currip'"
  1452                                    . "\n WHERE content_id = ". $cid
  1453                                    ;

  ----------------

On line 1450 $user_rating using user supplied value without any validation.
This kind of vulnerability is exploitable to gain sensitif information if  
Mambo configured to using mySQL 4.1 and above.

Fix
===
Fix available from Mambo website (http://mamboforge.net/frs/?group_id=5)

Proof of concept
================
See Attachment

Vendor Response
===============
15th June 2005 - Vendor Contacted
15th June 2005 - Fix Available
Download attachment "mambo4521-mysql41.php" of type "application/octet-stream" (5962 bytes)

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