WFTPD Server APPE Command Buffer Overflow Vulnerability

Bugtraq ID:	20942
Class:	Boundary Condition Error
CVE:	CVE-2006-5826
Remote:	Yes
Local:	No
Published:	Nov 07 2006 12:00AM
Updated:	Mar 26 2007 06:53PM
Credit:	Joxean Koret <[email protected]> is credited with the discovery of this vulnerability.
Vulnerable:	Texas Imperial Software WFTPD 3.23
Not Vulnerable:

WFTPD Server APPE Command Buffer Overflow Vulnerability

WFTPD is prone to a buffer-overflow vulnerability because the application fails to do proper bounds checking on user-supplied data before storing it in a finite-sized buffer.

An attacker can exploit this issue to execute arbitrary machine code in the context of the affected server application.

Version 3.23 is reportedly affected by this issue; other versions may also be affected.

WFTPD Server APPE Command Buffer Overflow Vulnerability

The following exploit code is available for members of the Immunity Partner's Program:

https://www.immunityinc.com/downloads/immpartners/wtftpd.tar

WFTPD Server APPE Command Buffer Overflow Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: mailto:[email protected].

WFTPD Server APPE Command Buffer Overflow Vulnerability

References:

• Immunity Partners Page (Immunity, Inc)
  
• WFTPD Homepage (Texas Imperial Software)