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From: Nelson Brito (nelsonSECUNET.COM.BR)
Date: Thu Feb 15 2001 - 12:37:43 CST

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    "Jesper M. Johansson" wrote:

    [...]

    > That's not to say that this is not an issue. It is, and it has been known
    > and discussed for at least two years. MS does not seem to consider it a real
    > serious problem because "administrators should not be mapping shares that

    Like I said, C$ em ADMIN$, by default instalation, is "write access" by
    ordinary users.

    So, think about this scenario:
    1 - malicious user has placed both file(autorun2.exe and autorun.inf) on
    the Server's C$;
    2 - the dumb Admin will mount this share to do something *dumb*;
    3 - so, the malicious user can do the dumb Admin execute the arbritary
    code(?) as obscurity as possible.
    4 - BINGO, the dumb Admin have added a new user or add the malicious
    user to Administrators/Domain Admins's group.

    Well, I can put a lot of other scenarios, but, is it necessary? I don't
    think so.

    When a malicious user realy want, he can do a lot of things to get Admin
    access on Windows NT enviroment.

    > ordinary users have write privilege to anyway." If that, rather
    > unreasonable, assumption holds, then this is not a problem. In most cases,
    > this is simply expected behavior, and it is up to us, as responsible admins,
    > to work around it.

    [...]

    > Hive: HKLM if you want to apply it to all users on a system, HKCU if you
    > only want to apply it to some users
    > Key: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
    > Value: NoDriveTypeAutoRun
    > Data 0xFF
    >
    > Jesper M. Johansson

    Like we can see at BID 993.

    Sem mais,

    --
    Nelson Brito
    "Windows NT can also be protected from nmap OS detection scans thanks
    to *Nelson Brito* ..."
                  Trecho do livro "Hack Proofing your Network", página 93