Re: Remote crashes in Yahoo messenger

From: Chris Bisnett (wav_boy2at_private)
Date: Fri Feb 22 2002 - 18:06:51 PST

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    I would also like to point out that messenger sends
    the password in clear text.  I don't know if that has
    been said before and if it has i'm sorry
    
    
    --- Scott Woodward <scottat_private> wrote:
    >  All versions of Yahoo messenger version 5. Listens
    > on port 5101 on client
    > machine.  (obviously to
    >  offload server traffic for IMs)
    > 
    >  problems:
    >  (for all of the problems listed below, the traffic
    > is sent to the yahoo
    > messenger opened port, 5101)
    > 
    >  1.  One can crash yahoo messenger by overflowing
    > the message field in the
    >  yahoo protocol.
    >  2.  One can crash yahoo messenger by overflowing
    > the IMvironment field in
    >  the yahoo protocol.
    >  3.  One can send a message as a spoofed name.
    >  4.  One can send many many messages from different
    > names, flooding the
    >  person.
    >  5.  One can add a person to their buddy list
    > (without their consent even),
    >  then message them a few times and that persons IP
    > address will be sent in a
    >  message over yahoo's server.
    > 
    >  I would imagine there are many many more security
    > problems to be found.
    > 
    > 
    > 
    
    
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