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    SubjectRe: Everything gone!
    On Wed, 19 Mar 2003, John Jasen wrote:

    > On Wed, 19 Mar 2003, Richard B. Johnson wrote:
    >
    > > Really? How did you do this?
    > > Clone my machine-name and domain, I mean? Without -bs in the
    > > header? I need to know. This could be exploited and needs
    > > to be fixed.
    >
    > Perhaps:
    >
    > telnet target.system 25
    > enter SMTP commands
    > quit

    Ah yes! And I just tried it! The target system was the one
    that the mail was pretended to come from and it has sendmail
    running and will forward from within the domain. So, that
    sendmail gets a mail message as though it came directly from
    itself so it will forward it.


    Cheers,
    Dick Johnson
    Penguin : Linux version 2.4.20 on an i686 machine (797.90 BogoMips).
    Why is the government concerned about the lunatic fringe? Think about it.

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