Re: Advisory for Spynet Chat

From: Amaury Jacquot (sxpertat_private)
Date: Tue May 08 2001 - 12:01:21 PDT

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    Quoting neme-dhcat_private:
    
    >  [ Advisory for Spynet Chat                        ]
    >  [ Spynet Chat is made by Spytech                  ]
    >  [ Site: http://www.spytech-web.com                ]
    >  [ by nemesystm of the DHC                         ]
    >  [ (http://dhcorp.cjb.net - neme-dhcat_private) ]
    >  [ ADV-0120                                        ]
    >
    > /-|=[explanation]=|-\
    > Spynet Chat is a chat server. It suffers from a
    > denial of service.
    >
    > /-|=[who is vulnerable]=|-\
    > Spynet Chat 6.5
    > has been tested and was vulnerable. Prior versions
    > are assumed to be vulnerable as well.
    >
    > /-|=[testing it]=|-\
    > By opening up roughly 100 sockets in Perl and then
    > using the normal Spynet Client to connect the
    > server crashes with:
    > S65server has caused an error in <unknown>.
    > S65server will now close.
    
    if this is on windows 95/98/ME, this is a known limitation in
    windows that cannot accomodate more than 100 opened sockets at
    the same time (thus gives random errors in application programs)
    
    Amaury
    
    > I have made a perl script that exploits this. It is
    > in the advisory that is available on the DHC site.
    > http://www.emc2k.com/dhcorp/homebrew/scs.zip
    >
    > /-|=[fix]=|-\
    > None known at the moment.
    > Free, encrypted, secure Web-based email at www.hushmail.com
    
    
    
    Raph
    Ingenieur en position du lotus
    12 rue de la lumiere blanche
    92130 Issy les Bouddhas
    



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