Re: CERT Advisory CA-97.27 - FTP_bounce

From: Alfred Huger (ahugerat_private)
Date: Fri Dec 12 1997 - 11:10:03 PST

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    > For those of you wanting to test this problem have a look at
    > http://www.rootshell.com/hacking/ftpBounceAttack
    >
    
    The FTP bounce attack as some people here have already noted, is quite
    old.
    
    A paper which has not been mentioned is one written by Hobbit which is
    available at ftp://ftp.avian.org/random/ftp-attack . Hobbit documented
    and wrote fixes for this problem quite some time ago. In fact, I believe
    this was the first paper really describing the problem and Hobbit may very
    well have been the one to discover it, although of this I am not sure.
    
    In any event, the paper is very succinct and goes a long way towards
    explaining the problem at length as well as showing how intruders etc. may
    use it.
    
    /****************************************************************************
    Alfred Huger                                    http://www.secnet.com/ballista
    Project Director                                ahugerat_private
    Secure Networks Inc. (SNI)
    *****************************************************************************/
    



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