[VulnWatch] iDEFENSE Security Advisory 09.01.05: 3Com Network Supervisor Directory Traversal Vulnerability

From: iDEFENSE Labs (labs-no-reply_at_idefense.com)
Date: 09/01/05

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    Date: Thu, 1 Sep 2005 11:31:45 -0400
    To: <bugtraq@securityfocus.com>, <vulnwatch@vulnwatch.org>, <full-disclosure@lists.grok.org.uk>
    
    

    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@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.


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