[NEWS] CiscoWorks 2000 Privilege Escalation Vulnerabilities (CiscoWorks Application Vulnerabilities)

From: SecuriTeam (support_at_securiteam.com)
Date: 08/14/03

  • Next message: SecuriTeam: "[TOOL] ShellForge, Python Based Shellcode Generator" 
    To: list@securiteam.com
Date: 14 Aug 2003 12:40:00 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
    - - promotion

    Get Thawte's New Step-by-Step SSL Guide for MSIIS

    In this guide you will find out how to test, purchase, install
    and use a Thawte Digital Certificate on your MSIIS web server.
    Throughout, best practices for set-up are highlighted to help you
    ensure efficient ongoing management of your encryption keys and digital
    certificates. Get your copy of this new guide now:
    http://ad.doubleclick.net/clk;5903126;8265119;j

    - - - - - - - - -

      CiscoWorks 2000 Privilege Escalation Vulnerabilities (CiscoWorks
    Application Vulnerabilities)
    ------------------------------------------------------------------------

    SUMMARY

    CiscoWorks Common Management Foundation (CMF), also packaged as part of
    CiscoWorks CD One, provides an application infrastructure foundation,
    allowing all CiscoWorks applications to share a common model for data
    storage, login, user role definitions, access privileges, and security
    protocols, as well as for navigation and launch management.

    Two vulnerabilities exist in CiscoWorks CMF versions prior to and
    including 2.1. The first vulnerability is a privilege escalation
    vulnerability where a guest user may obtain administrative privileges
    within the application via a specially crafted URL. The second
    vulnerability is an ability to run arbitrary commands on the CiscoWorks
    server due to an error in processing user input.

    Cisco is making patches available for CMF versions 2.0 and 2.1, free of
    charge, to correct the problem.

    DETAILS

    Affected Products:
    The following products are affected:
     * All versions of CiscoWorks CD One (1st through 5th editions)
     * Resource Manager Essentials (RME) versions 2.0, 2.1, and 2.2
     * Cisco Resource Manager (CRM) versions 1.0 and 1.1

    CiscoWorks CD One is included as the base for all CiscoWorks management
    solutions, such as the LAN Management Solution, Routed WAN Management
    Solution, Small Network Management Solution, and VPN/Security Management
    Solution.

    To determine the version of the Common Management Foundation which is
    installed, navigate through the menus within CiscoWorks starting with the
    tab on the left titled "Server Configuration" and locate the screen titled
    "Applications and Versions" under the folder named "About the Server".
    Look for the entry in the table labeled "Common Management Foundation" and
    the corresponding version.

    Details:
    The first vulnerability allows a non-privileged user of the CiscoWorks
    application, including the guest account if enabled, to send a specially
    crafted URL to the CiscoWorks server to acquire administrative privileges
    without authentication. Cisco Bug ID CSCdy33916 describes this
    vulnerability.

    The second vulnerability permits an authenticated user of the CiscoWorks
    application to run arbitrary commands on the CiscoWorks server as
    "casuser", the username under which the application runs. Cisco Bug ID
    CSCea15281 describes this vulnerability.

    Impact:
     * CSCdy33916 - The guest user or a normal user is capable, with a
    specifically crafted URL, of obtaining administrative privileges within
    the application allowing the user to perform tasks which it might
    otherwise not be allowed to do. Examples of such tasks might be approval
    of scheduled changes, such as software upgrades, adding and removing
    devices, adding, removing, and modifying accounts with the server, and
    viewing device configurations stored in the local archive.

     * CSCea15281 - A normal user is capable, with a specifically crafted URL,
    of running commands remotely on the CiscoWorks server to perform tasks
    which they may otherwise not have access to do. Examples of such tasks
    might be viewing device configurations stored in the local archive.

    Software Versions and Fixes:
    Both vulnerabilities have been resolved in CiscoWorks Common Services 2.2.

    Patches for CMF versions 2.0 and 2.1 should be available by the end of
    August 2003 (date subject to change). Should the availability date change,
    Cisco will update this advisory to reflect the new availability date.

    Obtaining Fixed Software:
    Customers with contracts should obtain upgraded software through their
    regular update channels. For most customers, this means that upgrades
    should be obtained through the Product Upgrade Tool at
    <http://tools.cisco.com/gct/Upgrade/jsp/index.jsp>
    http://tools.cisco.com/gct/Upgrade/jsp/index.jsp (registered customers
    only).

    Customers whose Cisco products are provided or maintained through prior or
    existing agreement with third-party support organizations such as Cisco
    Partners, authorized resellers, or service providers should contact that
    support organization for assistance with the upgrade, which should be free
    of charge.

    Customers who purchase/license the product directly from Cisco, but who do
    not hold a Cisco service contract and customers who purchase through
    third-party vendors, but are unsuccessful at obtaining fixed software
    through their point of sale should obtain an applicable software patch by
    contacting the Cisco Technical Assistance Center (TAC). TAC contacts are
    as follows.

     * +1 800 553 2447 (toll free from within North America)
     * +1 408 526 7209 (toll call from anywhere in the world)
     * e-mail: tac@cisco.com

    Please have your product serial number available and give the URL of this
    notice as evidence of your entitlement to a free patch. Free patches for
    non-contract customers must be requested through the TAC.

    Please do not contact either "psirt@cisco.com" or
    "security-alert@cisco.com" for software upgrades.

    If you need assistance with the implementation of the workarounds, or have
    questions on the workarounds, please contact the Cisco Technical
    Assistance Center (TAC).

    See <http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml>
    http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml for additional
    TAC contact information, including special localized telephone numbers and
    instructions and e-mail addresses for use in various languages.

    Workarounds:
     * CSCdy33916 - The guest user account may be disabled, limiting the
    exposure to only the trusted users of the CiscoWorks server. However, a
    software upgrade or patch is required to completely resolve the
    vulnerability.

     * CSCea15281 - There is no workaround. A software upgrade or patch is
    required.

    Technical details:
    Whilst requesting certain pages the raw HTTP shows a statement of who the
    logged on user is:

    HTTP/1.1 200 OK
    Date: Tue, 01 Jul 2003 13:01:12 GMT
    Server: Apache/1.3.24 (Unix) mod_perl/1.26
    Content-Length: 5
    Connection: close
    Content-Type: text/html

    guest

    By replacing guest with admin and using a HTTP POST request to send the
    information, (for the modify\delete users page) the system responds with
    information on all the users on the site, i.e.:
    user1::::7 user2::::2 portcullis:portcullis@anywhere.com:::3F admin::::F
    guest::admin::0

    This allows Guest to then view information restricted to the Admin account
    on all users on the system.

    ADDITIONAL INFORMATION

    The original advisory can be downloaded from:
    <http://www.portcullis-security.com/News/archives/advisory/cisco-sa-20030813.htm> http://www.portcullis-security.com/News/archives/advisory/cisco-sa-20030813.htm

    The information has been provided by
    <mailto:Omicron@portcullis-security.com> Omicron.

    ========================================

    This bulletin is sent to members of the SecuriTeam mailing list.
    To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
    In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com

    ====================
    ====================

    DISCLAIMER:
    The information in this bulletin is provided "AS IS" without warranty of any kind.
    In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

  • Next message: SecuriTeam: "[TOOL] ShellForge, Python Based Shellcode Generator"

    Relevant Pages