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From: Dan Richardson (dan.richardsonparadise.net.nz)
Date: Fri Nov 30 2001 - 13:42:03 CST

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    Hi,

    I've got a meeting Monday with one of our clients regarding general
    security of their website. Most of their IIS config needs sorting out
    from what I saw last visit, but their ASP code I'm sure is potentially
    vulnerable.

    I've tested their logon (www.blah.com/logon.asp) script with the
    following. While I'll have access to the code Monday, I'd like to be
    able to go in with something revealing right off (usually makes people
    sit up and pay attention).

    Username: ' OR ''='
    Password: <blank>

    Yields an 'account is locked out message' rather than a password failure
    message regardless of what is put in the password field.

    If I use single quotes

    Username: sdf'
    Password: <blank> or asdf'

    I get:

    XYZQBusiness::boMember.CheckValidUser error '80040001'

    Invalid advise flags

    /_some_dir/verifpwd.asp, line xx

    The site allows for users to register as 'guests' for the logon process,
    the username format follows:

    Username: blahblah.com
    Password: somepassword

    Being from a networking background and not much of a SQL guru, would it
    be possible to enumerate further data from the database and potentially
    gain an account listing? Passwords of legitimate users? It is possible
    that they are accessing the DB with an 'sa' logon, could this code be
    exploited to start attacking the box?

    Thanks in advance,

    Dan

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