[VulnWatch] SRT2003-11-13-0218 - PCAnywhere local SYSTEM exploit

From: KF (dotslash_at_snosoft.com)
Date: 11/13/03

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    Date: Thu, 13 Nov 2003 15:55:11 -0500
    To: vulnwatch@vulnwatch.org
    
    
    

    
    

    Secure Network Operations, Inc. http://www.secnetops.com/research
    Strategic Reconnaissance Team research@secnetops.com
    Team Lead Contact kf@secnetops.com

    Our Mission:
    ************************************************************************
    Secure Network Operations offers expertise in Networking, Intrusion
    Detection Systems (IDS), Software Security Validation, and
    Corporate/Private Network Security. Our mission is to facilitate a
    secure and reliable Internet and inter-enterprise communications
    infrastructure through the products and services we offer.

    To learn more about our company, products and services or to request a
    demo of ANVIL FCS please visit our site at http://www.secnetops.com, or
    call us at: 978-263-3829

    Quick Summary:
    ************************************************************************
    Advisory Number : SRT2003-11-13-0218
    Product : Symantec PCAnywhere
    Version : 10.x and 11.x
    Vendor : http://www.symantec.com/pcanywhere/
    Class : Local
    Criticality : High (to PCAnywhere users)
    Operating System(s) : Win32

    Notice
    ************************************************************************
    The full technical details of this vulnerability can be found at:
    http://www.secnetops.com under the research section.

    Basic Explanation
    ************************************************************************
    High Level Description : PCAnywhere allows local users to become SYSTEM
    What to do : run LiveUpdate and apply latest patches.

    Basic Technical Details
    ************************************************************************
    Proof Of Concept Status : SNO has proof of concept.

    Low Level Description : PCAnywhere is an industry-leading remote control
    software that features remote management paired with file transfer capabilities.
    PCAnywhere has the ability to help quickly resolve helpdesk and server support
    issues.

    When PCAnywhere is started as a service or set to launch with windows an
    attacker may be able to take SYSTEM rights via the help interface. AWHOST32.exe
    runs as the user SYSTEM while interacting with the local desktop on the machine
    that PCAnywhere is listening. Users have the ability to interact with AWHOST32
    via an icon in the Windows systray.

    Brett Moore of security-assessment.com pointed out a flaw in the Win32 help
    API which can be found at http://www.securityfocus.com/bid/8884 . A variation
    of this attack is present in both PCAnywhere 10 and 11. It is unknown how this
    issue affects older versions of PCAnywhere since they are no longer supported
    products.

    full details at http://www.secnetops.biz/research/SRT2003-11-13-0218.txt

    Vendor Status : Symantec promptly attended to the issue and
    was very responsive during all phases of discovery / research and patching.
    Fixes are now available via LiveUpdate.

    Bugtraq URL : To be assigned. CVE candidate CAN-2003-0936.
    Disclaimer
    ----------------------------------------------------------------------
    This advisory was released by Secure Network Operations,Inc. as a matter
    of notification to help administrators protect their networks against
    the described vulnerability. Exploit source code is no longer released
    in our advisories but can be obtained under contract.. Contact our sales
    department at sales@secnetops.com for further information on how to
    obtain proof of concept code.

    ----------------------------------------------------------------------
    Secure Network Operations, Inc. || http://www.secnetops.com
    "Embracing the future of technology, protecting you."

     


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