Portcullis Security Advisory 05-007

["Paul J Docherty" <PJD () portcullis-security com>]

Portcullis Security Advisory
 
Vulnerable System: 
      
Webseries Payment Application
 
Vulnerability Title:  
 
Password Policy Implemented At Client rather than Server
 
Vulnerability discovery and development: 
 
Portcullis Security Testing Services
 
Affected systems: 
 
Bottomline Webseries Payment Application 
 
Details:
 
The password policy, enforcing the minimum length of passwords, is implemented in the client browser using JavaScript 
which can be bypassed using any local proxy system, allowing for single character passwords.
 
Impact:
 
Whilst client side data validation can be of assistance in aiding a user to
correctly enter the required information, client side scripts can be easily
by-passed in a number of ways.  This allows a user to set their password to
a value not acceptable to the implemented security policy.
 
Exploit:
 
Exploit code not required.
 
Copyright: 
 
Copyright © Portcullis Computer Security Limited 2005, All rights reserved worldwide.
Permission is hereby granted for the electronic redistribution of this information. It is not to be edited or altered 
in any way without the express written consent of Portcullis Computer Security Limited.
 
Disclaimer: 
 
The information herein contained may change without notice. Use of this information constitutes acceptance for use in 
an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use 
of this information is at the user's risk. In no event shall the author/distributor (Portcullis Computer Security 
Limited) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this 
information.
 
 
 
 
 


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