bugtraq - Re: Multiple Buffer Overflow Vulnerabilities Found in CMailServer 4.0

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Message-ID: <20030512230257.18171.qmail@www.securityfocus.com>
Date: 12 May 2003 23:02:57 -0000
From: <millhouse@...s.net>
To: bugtraq@...urityfocus.com
Subject: Re: Multiple Buffer Overflow Vulnerabilities Found in CMailServer 4.0

In-Reply-To: <000a01c316d1$a7b15ae0$1601a8c0@...441>

Hi, i found a buffer overflow in CMailServer 4.0 a few weeks ago that 
already had been discovered in CMailServer 3.3 in May 2002. It seems that 
this bug has not been fixed in the current version. The buffer overflow is 
in the USER command makes it possible to overwrite the EIP. The problem is 
that every capital letter in the buffer that could given with the overflow 
is converted to small letters, so its impossible for me to write a working 
exploit that executes code.

E:\>telnet localhost 110
+OK CMailServer 4.0 POP3 Service Ready
USER "A"x524

millhouse, www.dsns.net