Ipswitch WhatsUp Gold Remote Denial of Service Vulnerability iDEFENSE Security Advisory 09.16.04 www.idefense.com/application/poi/display?id=142&type=vulnerabilities September 16, 2004 I. BACKGROUND Ipswitch WhatsUp Gold is a Microsoft Windows based network monitoring application. More information is available at http://www.Ipswitch.com/products/whatsup/index.html II. DESCRIPTION Remote exploitation of a denial of service vulnerability in Ipswitch Inc.'s WhatsUp Gold allows attackers to cause the application to crash. The problem specifically exists in the handling of reserved DOS device names. By generating a GET request for 'prn.htm' to the HTTP daemon installed by WhatsUp Gold, the application crashes and the following Runtime Library error is displayed: Runtime Error! Program: C:\Program Files\WhatsUp\whatsupg.exe abnormal program termination III. ANALYSIS Successful exploitation allows unauthenticated remote attackers to crash the WhatsUp Gold application, thereby preventing legitimate usage. The WhatsUp Gold web server is not enabled by default. IV. DETECTION iDEFENSE has confirmed the existence of this vulnerability against WhatsUp Gold versions 8.03 and the latest version 8.03 Hotfix 1. It is suspected that earlier versions are also vulnerable. V. WORKAROUNDS Disable the WhatsUp Gold web server if it is not required. VI. VENDOR RESPONSE A patch to address this issue is available at: http://www.ipswitch.com/Support/WhatsUp/patch-upgrades.html VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2004-0799 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 08/12/2004 Initial vendor notification 08/12/2004 iDEFENSE clients notified 08/12/2004 Initial vendor response 09/16/2004 Coordinated public disclosure IX. CREDIT The discoverer wishes to remain anonymous. Get paid for vulnerability research http://www.idefense.com/poi/teams/vcp.jsp X. LEGAL NOTICES Copyright (c) 2004 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@idefense.com 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.