SEC-20051025-1.txt

`SEC-CONSULT Security Advisory 20051025-1  
=====================================================================  
title: RSA ACE Web Agent XSS  
program: RSA ACE/Agent for Web  
vulnerable version: 5.1, 5.1.1  
newer versions may be vulnerable  
homepage: www.rsasecurity.com  
found: 2005-10  
by: SEC-CONSULT / www.sec-consult.com  
=====================================================================  
Vendor description:  
---------------  
  
RSA Authentication Agent software intercepts access requests—whether  
local or remote—from users or groups of users and directs them to the  
RSA Authentication Manager program for authentication. Once verified,  
permission to access protected resources is granted.  
  
  
Vulnerabilty overview:  
---------------  
  
RSA Authentication Agent for Web 5.1 is prone to a Cross site scripting  
vulnerability. Please note that this is issue is different from  
CAN-2003-0389.  
  
  
Vulnerability details:  
---------------  
  
Due to missing input validation it is possible to inject client side  
scripts into the "image" - parameter.  
  
example:  
  
---cut here---  
  
http://[SERVER]/webauthentication?GetPic?  
image=x%3Cimg%20src=%22A%22+onError=%22javascript:alert('Thanks%20for%20turning%20on%20the%20remotecontrol')%3b%22%3Exxx  
  
---cut here---  
  
  
Recommended fixes  
---------------  
  
Whitelist allowed characters in userinput.  
  
  
Vulnerable versions:  
---------------  
  
This flaw was discovered in version 5.1 of RSA Agent for Web. No other  
versions were available for testing. Web Agents >5.1 may also be vulnerable.  
  
  
Vendor status:  
---------------  
  
RSA Security was notified of this issue several times. However, this  
would not inspire them to do further investigation on the flaw.  
  
  
General remarks  
---------------  
We know that version 5.1 ist not supported any more and we would like to  
apologize in advance for potential nonconformities and/or known issues.  
  
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EOF SEC Consult / @2005  
research at sec-consult dot com  
`