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TUCoPS :: Network Appliances :: va1074.htm

Kyocera Mita Scanner File Utility (Multiple)



White Wolf Labs #080826-1: Kyocera Mita Scanner File Utility (Multiple)
White Wolf Labs #080826-1: Kyocera Mita Scanner File Utility (Multiple)



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 =A9 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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