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Message-ID: <FB24803D1DF2A34FA59FC157B77C9705048D63C9@IDSERV04.idef.com> Date: Thu Sep 1 16:31:44 2005 From: labs-no-reply at idefense.com (iDEFENSE Labs) Subject: iDEFENSE Security Advisory 09.01.05: 3Com Network Supervisor Directory Traversal Vulnerability 3Com Network Supervisor Directory Traversal Vulnerability iDEFENSE Security Advisory 09.01.05 www.idefense.com/application/poi/display?id=300&type=vulnerabilities September 9, 2005 I. BACKGROUND 3Com Network Supervisor is a network monitoring application which allows monitoring services on multiple hosts. More information is available at the following site: http://www.3com.com/products/en_US/detail.jsp?tab=prodspec&sku=3C15100E II. DESCRIPTION Remote exploitation of a directory traversal vulnerability in 3Com Corp.'s Network Supervisor version 5.0.2 may allow an attacker unauthorized access to files. 3Com Corp.'s Network Supervisor 5.0.2 contains an httpd running on port 21700. By constructing a URL containing '../' sequences it is possible to access files outside of the webroot for this service. III. ANALYSIS Successful exploitation of this vulnerability would allow a remote attacker unauthenticated access to any file on the same filesystem as the server is installed on. Typically this is the C: drive, which also typically contains the Windows operating system files. One potential target may be the [SYSTEMROOT]\repair\sam file, which contains user password information for the system. Tools are available, which will recover the password from this file. With this password, an attacker may gain access to the vulnerable system. As the vulnerable tool is designed for network administration, it is likely that the users of an affected system will have elevated permissions on other systems on the network. IV. DETECTION iDEFENSE Labs have confirmed that 3Com Corp.'s Network Supervisor 5.0.2 is affected by this vulnerability. It is suspected that all previous versions are affected. V. WORKAROUND Restrict remote access to port 21700 at the network boundary, unless remote parties require service. Access to the affected host should be filtered at the network boundary if global accessibility is not required. Restricting access to only trusted hosts and networks may reduce the likelihood of exploitation. VI. VENDOR RESPONSE Vendor patches to address this vulnerability are available for download at: 3Com(r) Network Director Version 1.0 Critical Update 1 for the Initial release and Service Pack 1 http://support.3com.com/software/3Com_network_director_v1_0_sp0_1_cu1.ex e 3Com(r) Network Director Version 1.0 Critical Update 1 for Service Pack 2 and Service Pack 3 http://support.3com.com/software/3Com_network_director_v1_0_sp2_3_cu1.ex e 3Com(r) Network Director Version 2.0 Critical Update 1 http://support.3com.com/software/3com_network_director_v2_0_cu1.exe 3Com(r) Network Supervisor Version 5.1 Critical Update 1 http://support.3com.com/software/3com_network_supervisor_v5_1_cu1.exe VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2005-2020 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 06/20/2005 Initial vendor notification 07/07/2005 Initial vendor response 09/01/2005 Coordinated public disclosure IX. CREDIT Discovery of this vulnerability is credited to iDEFENSE Labs. 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 (c) 2005 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@...fense.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.
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