Strumpf Noir Society Advisories
! Public release !
<--#

-= QPC FTPd Directory Traversal and BoF Vulnerabilities =-

Release date: Saturday, April 14, 2001

Introduction:

QPC's ftpd is the ftp server component of the company's QVT/NET
and QVT/Term software suites for MS Windows.

The ftpd and the rest of the QVT/Net and QVT/Term product lines
is available from vendor QPC's website: http://www.qpc.com

Problem(s):

Directory Traversal Vulnerability

The ftpd daemon that ships with above mentioned packages is
vulnerable to a directory traversal problem. Adding '../'
(''s excluded) to a listing request ('ls') any user can gain
read access to other directories than his/her own.

Remote Buffer Overflow Vulnerability

The ftpd daemon that ships with mentioned packages contains an
unchecked buffer in the logon function. When a username or
password of 655 bytes or more gets fed to the server the buffer
will overflow and will trigger an access violation, after which
the server dies.

(..)

Solution:

Vendor QPC was notified but has yet to respond.

This was tested against QVT/Net Ftpd 4.3, coming with the
QVT/Net 5.0 and QVT/Term 5.0 suites, running on MS Win2k.

yadayadayada

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compliant, all information is provided on AS IS basis.

EOF, but Strumpf Noir Society will return!

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