ISS Multiple Products Local Privilege Escalation Vulnerability iDefense Security Advisory 03.23.05 http://www.idefense.com/intelligence/vulnerabilities/display.php?id=403 March 23, 2006 I. BACKGROUND Internet Security Systems (ISS) has developed a suite of tools aimed at securing server and desktop systems. A flaw exists within a central module to these components that can allow unprivileged users to obtain complete control of the machine. http://www.iss.net/products_services/products.php II. DESCRIPTION Local exploitation of a design error in the multiple Internet Security Systems (ISS) products may allow a user to gain System level privileges. Exploitation of this issue is trival and can be done manually. This exploit has been confirmed in ISS BlackIce 3.6 product and is reportedly also found in the following products: - BlackICE PC Protection (Consumer) - BlackICE Server Protection (Consumer) - BlackICE Agent for Server (Corporate) - RealSecure Desktop 3.6 and 7.0 (Corporate) To exploit this condition you must first trigger an action that would initiate the Application Protection Module to display a warning. For the BlackIce product, this can be initiated by launching any executable moved or installed after the product itselft was first installed. From the "Application Protection" dialog press the "More Info" button with will bring up a secondary form. With this form active, pressing the F1 key will bring up the standard Windows Open File dialog prompting the user to manually locate the help file for the application. The problem arises when the BlackIce process fails to drop permissions before launching the help dialog. If a user resets the dialog file mask by entering *.exe [enter] they can then launch any executable on the system from the dialog by right clicking on it and choosing "open". Applications run in this manner will be executed with System level rights. III. ANALYSIS Successful exploitation allows a local attacker to execute arbitrary commands as the System Administrator user. This allows complete system compromise including the installation and removal of applications, and ability to read and write any file on the system. IV. DETECTION iDefense has confirmed this vulnerability exists in version 3.6 of ISS BlackIce PC Desktop for Windows with all current updates applied. V. WORKAROUND There is currently no known work around for this issue. VI. VENDOR RESPONSE "This issue does not affect Proventia Desktop, which is a replacement product for and a free upgrade from RealSecure Desktop 3.6 and 7.0. Nor does this issue affect Proventia Server, which is a replacement product for and a free upgrade from BlackICE Agent for Server. There are no other ISS products that use the components described." VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2005-2711 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 08/23/2005 Initial vendor notification 08/24/2005 Initial vendor response 03/23/2005 Public disclosure IX. CREDIT The discoverer of this vulnerability wishes to remain anonymous. Get paid for vulnerability research http://www.idefense.com/poi/teams/vcp.jsp Free tools, research and upcoming events http://labs.idefense.com X. LEGAL NOTICES Copyright © 2006 iDefense, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please email customerservice@private 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 in 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.
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