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  DoS против Exchange

  Security Bulletin (MS00-082)

  RE: Re[3]: Possible Exchange 5.5 Server DoS [msrc 421]

  Possible Exchange 5.5 Server DoS

From:3APA3A <3APA3A_(at)_security.nnov.ru>
Date:14 сентября 2000 г.
Subject:Re: Possible Exchange 5.5 Server DoS

Hello Christer Enberg,

12.09.2000 10:30, you wrote: Possible Exchange 5.5 Server DoS;
C> queues and then restart exchange.

C> It seems that the attachment line is the problem, by removing the attachment
C> and sending the mail nothing happens.

The problem is probably in Content-Type: field

Content-Type: multipart/mixed;
       boundary = ""

As  you  can  see  boundary (delimeter between MIME parts) is declared
empty.

It  seems  Exchange  crashes  then  it tries to locate end of the part
(every part must begin with "--" + boundary and end with boundary.


/3APA3A

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