Accellion Secure File Transfer Web Application Is Vulnerable To Directory Traversal

2010-02-19 / 2010-02-20
Credit: Tim Brown
Risk: Medium
Local: No
Remote: Yes

CVSS Base Score: 7.8/10
Impact Subscore: 6.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Complete
Integrity impact: None
Availability impact: None

Accellion Secure File Transfer Web Application Is Vulnerable To Directory Traversal. Portcullis Security Advisory - 09-010 Vulnerable System: Accellion Secure File Transfer Appliance Vulnerability Title: Accellion Secure File Transfer Web Application Is Vulnerable To Directory Traversal. Vulnerability Discovery And Development: Portcullis Security Testing Services. Credit For Discovery: Tim Brown - Portcullis Computer Security Ltd. Affected systems: All known versions of Secure File Transfer Appliance; the vulnerability discovered was for version FTA_7_0_259. Details: 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: Impact: An attacker could gain access to arbitrary files. Exploit: Exploit code is not required. 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 Copyright: Copyright Portcullis Computer Security Limited 2009, All rights reserved worldwide. Permission is hereby granted for the electronic redistribution of this information. It is not to be edited or altered in any way without the express written consent of Portcullis Computer Security Limited. Disclaimer: The information herein contained may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Portcullis Computer Security Limited) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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