Tried, Tested and Proven

Security Advisory 08-010 – Microsoft Windows Active Directory LDAP Server

Vulnerability Title:

User Interface Is Vulnerable To Directory Traversal.

Vulnerable System:

Accellion Secure File Transfer Appliance

Vulnerability discovery and development:

Portcullis Security Testing Services

Credit for Discovery:

Tim Brown – Portcullis Computer Security Ltd.

Affected Systems:

wn versions of Secure File Transfer Appliance; the vulnerability discovered was for version FTA_7_0_259.


Accellion Secure File Transfer Appliance is an appliance based solution used for receiving and delivering large files. It does this by allowing users to upload and download files via https. It is generally deployed in a DMZ to allow users access from the local network as well as the Internet. It is based on a customised Redhat OS running a web application which provides the user interface.

It is possible to pass a value in the template parameter of requests to the user interface web application which causes arbitrary files to be returned from outside of the web root as follows:


An attacker could gain access to arbitrary files.


The proof of concept exploit code is available

Vendor Status:

15/06/2009 – Vendor informed via email

03/07/2009 – Vendor advised thay they released a software update with version 8_0_105

04/11/2009 – Publication


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