Libero Cross Site Scripting

`Libero Cross-Site Scripting Vulnerability - Security Advisory - SOS-09-001  
  
Release Date. 23-Feb-2009  
Vendor Notification Date. 20-Oct-2008  
Product. Libero  
Platform. Windows (verified), possibly others  
Affected versions. Libero v5.3 SP5 (verified), possibly others  
Severity Rating. Medium  
Impact. Cookie/credential theft, impersonation, loss of confidentiality  
Attack Vector. Remote  
Solution Status. Vendor patch not yet available  
CVE reference. CVE-2009-0540  
  
Details.  
Libero is a library management system. During an application penetration test Sense of Security identified a cross-site scripting vulnerability in the search feature of the Libero web application. This occurred as a result of the application not properly filtering HTML tags which allowed malicious Javascript to be embedded. When input is incorrectly validated and not properly sanitised and then displayed in a web page, attackers can trick users into viewing the web page and causing malicious code to be executed.   
  
Proof of Concept.  
You can test the susceptibility of your system to this issue by entering the following string into the search term form field and clicking 'search'.  
<script>alert(document.cookie)</script>  
A vulnerable site will return the users' session ID.  
  
Solution.  
The vendor has advised that the fix will be made available in Libero v5.5 SP1.   
A fix will not be made available for previous versions.  
  
Discovered by.  
Oliver Greiter from SOS Labs.  
  
About us.  
Sense of Security is a leading provider of IT security and risk management solutions. Our team has expert skills in assessment and assurance, strategy and architecture, and deployment through to ongoing management. We are Australia's premier application security consultancy and trusted IT security advisor to many of the countries largest organisations.  
  
Sense of Security Pty Ltd   
Level 3, 66 King St  
Sydney NSW 2000  
AUSTRALIA  
  
T: +61 (0)2 9290 4444  
F: +61 (0)2 9290 4455  
W: http://www.senseofsecurity.com  
E: [email protected]  
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