bugtraq - Airscanner Mobile Security Advisory #06260602: Pocket Expense Pro 3.9.1 Authentication Bypass

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Message-ID: <20060907034825.30873.qmail@securityfocus.com>
Date: 7 Sep 2006 03:48:25 -0000
From: removethis_contact@...movethis_airscanner.com
To: bugtraq@...urityfocus.com
Subject: Airscanner Mobile Security Advisory #06260602:  Pocket Expense
 Pro 3.9.1 Authentication Bypass

Airscanner Mobile Security Advisory #06260602:
Pocket Expense Pro 3.9.1 

Product:
Pocket Expense Pro 3.9.1 

Platform:
Tested on Windows Mobile Pocket PC 2005

Requirements:
Mobile device running Windows Mobile Pocket PC with Pocket Expense Pro 3.9.1 installed

Credits:
Seth Fogie
Airscanner Mobile Security
http://www.airscanner.com
Mobile Antivirus Researchers Association
http://www.mobileav.org
04/11/2006

Risk Level:
High - Sensitive information disclosure

Summary:
PocketExpense Pro is a premier expense tracking application which can save you the time and hassle of recording your business expenses.

http://www.scarybearsoftware.com/ppc_pe_overview.html

PocketExpense Pro protects the data contained in its file via a user provided password. However, the key is not used to encrypt the actual data, but only to authenticate the user. It is possible to disable the authentication by changing a value in the file headers.

Details:
To turn off the authentication, change the hex value at 0x7d94 from F4 to D4

Workaround:
None provided.

Vendor Response:
Awaiting Response

Copyright (c) Airscanner Corp.
http://www.airscanner.com

Advisory Online
http://airscanner.com/security/06062602_pocketexpensepro.htm

Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of Airscanner Corp. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please contact Airscanner Corp. for permission.

Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use on an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.