BugTraq
White Wolf Labs #080826-1: Kyocera Mita Scanner File Utility (Multiple) Aug 26 2008 06:05PM
Seth Fogie (seth whitewolfsecurity com)
White Wolf Labs #080826-1:
Kyocera Mita Scanner File Utility (Multiple)

Product: Kyocera Mita Scanner File Utility 3.3.0.1

Platform: NA

Requirements: NA

Credits:

Seth Fogie
White Wolf Security
http://www.whitewolfsecurity.com
August 26, 2008

Risk Level:

High - Unauthorized document upload / File redirection / Uploading
of binaries / Overwriting of existing files

Summary:

Kyocera Mita multifunction devices come with the ability to scan to
the user's desktop. Part of the solution requires a listener at the
PC/Mac, which handles authorization and document upload. This listener
has several logic bugs and, as a result, the authorization can be
bypassed, files can be uploaded, auditing can be spoofed, and the
storage location can be altered from the configured value.

Details:

Unauthorized document upload - The listener works in conjunction
with the multifunction device to authorize the user. If an attacker
connects direct to the listener with a custom program, all authorization
can be bypassed. This provides an attacker with the ability to directly
upload a file to the target's computer.

File Redirection - During the transfer process, the file name is
provided to the listener. This name can be altered to include "../",
which causes the listener to break out of the specified file storage
location and allows an attacker to upload a file anywhere on the target
system.

Upload any file type - There are no checks in the listener to
validate the content of the uploaded file. As a result, an attacker can
upload any file type with any file name. When combined with the other
bugs, this give the attacker the ability to overwrite existing files, or
write a binary into the Startup Folder.

More details are located at:
http://www.informit.com/guides/content.aspx?g=security&seqNum=320
http://www.informit.com/guides/content.aspx?g=security&seqNum=321

MetaSploit module is located at:
http://www.whitewolfsecurity.com/security/metasploit/fileutility.txt

Workaround: Uninstall the software from the PC/Mac.

Vendor Response: Vendor has released an update that fixes only the file
redirection issue.

Copyright © 2008 White Wolf Security

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of White Wolf Security. If you wish to reprint the
whole, or any part, of this alert in any other medium other than
electronically, please contact White Wolf Security for permission.

Disclaimer: The information in this advisory is believed to be accurate
at the time of publishing, based on currently available information. Use
of the information constitutes acceptance for use on an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on,
this information.

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