anywhere-3.1.3.txt

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Hello,  
  
I've reported DoS probrems on Internet Anywhere Mail Server Ver.3.1.3  
to [email protected] on 3rd Dec,99. They started to develop the fix.  
But they said "we'll release the fix in couple of weeks" three times.  
I've discussed with Jeff Moll(President of True North Software, Inc.)  
and he allowed me to post these vulnerabilities.  
  
1. RETR DoS in POP service  
+OK POP3 Welcome to somewhere.domain using the Internet Anywhere  
Mail Server Version: 3.1.3. Build: 1065 by True North Software,  
Inc.  
USER yellow  
+OK valid  
PASS pikapika  
+OK Authorized  
RETR 111111111111111111111111  
  
That's all. The Server could be dead at a little bit after  
atoi(). They should check return value of atoi().  
  
2. multiple connections to port 25 DoS  
This is simple game, too.  
Too much connect()s about 3000, then you will see connection  
refused. After that, too much connect()s again about 800, then  
you can't connect anymore.  
It depends on memory size(I tested on 128MB RAM,total 256MB).  
They should check connection status.  
  
Moderator of BUGTRAQ-JP  
<Nobuo Miwa> [email protected] ( @ @ ) http://www.lac.co.jp/security/  
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