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From: Dave Palumbo (dpalumboyahoo.com)
Date: Fri Jun 14 2002 - 15:39:44 CDT

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    sMax. Security Advisory

    Title: Cross-Site Scripting in CiscoSecure ACS v3.0
    Date: June 14, 2002


    CiscoSecure ACS v3.0 (Win32)


    CiscoSecure ACS is Cisco's implementation of RADIUS.
    v3.0 is the current release of the product. Taken
    from their website: "Cisco Secure ACS provides
    authentication, authorization, and accounting
    (AAA—pronounced "triple A") services to network
    devices that function as AAA clients, such as a
    network access server, PIX Firewall, or router."


    Testing CiscoSecure ACS v3.0(1), Build 40 reveals a
    cross-site scripting problem in the web server
    component. Specifically, the "action" argument that
    the setup.exe handler uses does not appear to do
    proper input validation. Other arguments were not
    tested, though they may be vulnerable as well.

    (URL may wrap)

    Obviously one needs to already be authenticated to the
    ACS web server for this to successfully be carried


    Follow best practices, don't make the web component of
    ACS server available over the Internet.

    Cisco was contacted on May 21st. They have committed
    to fixing this in the next release of the software,
    due out in "mid to late summer".

    - Dave Palumbo

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