Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                       ESB-2008.0228 -- [Appliance]
                     Canon - vulnerable to FTP Bounce
                               3 March 2008


        AusCERT Security Bulletin Summary

Product:              imageRUNNER 2230/2830/3530
                      imageRUNNER 3025/3030/3035/3045
                      imageRUNNER 2270/2870/3570/4570
                      imageRUNNER 5070/5570/6570
                      imageRUNNER 5050/5055/5065/5075
                      imageRUNNER 8070/85+/9070/105+
                      imageRUNNER 7086/7095/7105
                      Color imageRUNNER C3220/2620
                      Color imageRUNNER C2880/3380
                      Color imageRUNNER C2550
                      Color imageRUNNER C4080/4580/5180/5185
                      Color imageRUNNER LBP5960
                      Color imageRUNNER LBP5360
                      imageRUNNER C3170
                      imageRUNNER C5800/6800
                      imageRUNNER C5870U/6870U
                      imageRUNNER C5058/5068
                      imageRUNNER LBP3460
                      imagePRESS C7000VP
                      imagePRESS C1
Publisher:            US-CERT
Operating System:     Network Appliance
Impact:               Inappropriate Access
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-0303

Original Bulletin:    http://www.kb.cert.org/vuls/id/568073

- --------------------------BEGIN INCLUDED TEXT--------------------

Vulnerability Note VU#568073

Canon digital multifunction copiers FTP bounce vulnerability


Some models of Canon digital multifunction copiers are vulnerable to the FTP 
bounce attack.

I. Description

- From the Problems With The FTP PORT Command document:

      The FTP Bounce Attack

      To conform with the FTP protocol, the PORT command has the originating 
      machine specify an arbitrary destination machine and port for the data 
      connection. However, this behavior also means that an attacker can open 
      a connection to a port of the attacker's choosing on a machine that 
      may not be the originating client.

Some Canon digital multifunction printers contain an FTP server that is 
vulnerable to the FTP bounce attack.

II. Impact

A remote, unauthenticated attacker may be able to conduct port scans or send 
arbitrary (TCP) traffic to other hosts.

III. Solution

We are currently unaware of a practical solution to this problem.

The following workarounds may mitigate this vulnerability.

Disable the affected FTP server

Administrators and users should either turn off the vulnerable FTP server or 
disable anonymous access. See the Steps to take to clear vulnerability section 
of the Canon Web Advisory: Digital multifunction printer vulnerability for more 

Use host based firewalls

Administrators and users can use host-based firewalls to prevent affected 
printers and other devices from creating connections to arbitrary TCP ports.

Systems Affected

Vendor   Status      Date Updated
Canon   Vulnerable    28-Feb-2008




Thanks to Canon for information that was used in this report. 
Canon credits Nate Johnson and the Indiana University for reporting 
this vulnerability.

This document was written by Ryan Giobbi.
Other Information
Date Public             02/28/2008
Date First Published    02/28/2008 02:46:21 PM
Date Last Updated       02/28/2008

CERT Advisory    
CVE Name        CVE-2008-0303
US-CERT Technical Alerts         
Metric  0.72
Document Revision       10

- --------------------------END INCLUDED TEXT--------------------

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