bugtraq - Portcullis Security Advisory 05-003

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Date: Mon, 10 Jan 2005 20:46:33 -0000
From: "Paul J Docherty" <PJD@...tcullis-security.com>
To: <bugtraq@...urityfocus.com>
Subject: Portcullis Security Advisory 05-003

Portcullis Security Advisory

Vulnerable System: 

MediaPartner 5.0

Vulnerability Title:  

In Place Password Update Process Flawed

Vulnerability discovery and development: 

Portcullis Security Testing Service

Affected systems: 

Emotion MediaPartner Web Server Version 5.0  (5.1 not confirmed)

Details:

The logic behind the "In Place Password Update" process (which
appears to be used to force a user to change their password when it
has expired) can be exploited to change the password of any user,
without having to authenticate to the system or have knowledge of the 
current password. This is caused by the fact that no checking is done 
to ensure that a session has been authenticated before the change 
password code is executed.

Impact:

This vulnerability allows the authentication mechanism to be
bypassed, by entering a valid username and resetting their password
to a known value.  Once access was gained to the application
Portcullis were able to identify users with full admin privileges,
after resting their password, full control of the application was
gained.

Exploit:

No exploit required. Example: http://target_ip/login.bhtml?userNameForPasswordChange=admin

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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