-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

=========================================

Brother MFC-9970CDW Firmware 0D

Date: Jan. 13, 2013

URL:
http://www.cloudscan.me/2013/05/xss-javascript-injection-brother-mfc.html

=========================================

Keywords

=========================================

XSS, Cross Site Scripting, CWE-79, CAPEC-86, Javascript Injection, Exploit,
Zero Day, Brother MFC-9970 CDW

CVE-2013-2507, CVE-2013-2670, CVE-2013-2671, CVE-2013-2672, CVE-2013-2673,
CVE-2013-2674, CVE-2013-2675, CVE-2013-2676

=========================================

Summary

=========================================

A Reflected XSS Bug in the Brother MFC-9970CDW Printer was discovered in
January 2013. This document will introduce and discuss the vulnerability
and provide Proof-of-Concept (PoC) Zero Day (0D) code examples for Firmware
L Version 1.10 Released on July 9, 2012, and prior versions.

=========================================

Overview

=========================================

Brother Industries, Ltd. is a multinational electronics and electrical
equipment company headquartered in Nagoya, Japan. Its products include
printers, multifunction printers, sewing machines, large machine tools,
label printers, typewriters, fax machines, and other computer-related
electronics. Brother distributes its products both under its own name and
under OEM agreements with other companies.



The MFC-9970cdw Color Laser All-in-One combines print, copy, scan and fax
in one powerful device. It produces high-impact color output at impressive
print and copy speeds of up to 30ppm and offers flexible connectivity with
wireless, Ethernet and USB interfaces. It features a 5" Color Touch Screen
display for easy navigation and menu selection. Also, this flagship model
offers automatic duplex print/copy/scan/fax and optional high yield toner
cartridges to help lower your operating costs – making this all-in-one a
smart choice for a business or workgroup.

=========================================

The Bug

=========================================

Reflected Cross Site Scripting, CWE-79

=========================================

Vulnerable Parameters = id , val, kind + Query String

Signature = "><script>alert(1)</script>

=========================================

Version Identification

=========================================

Brother MFC-9970CDW - Version Identification - Firmware “L” Version
1.10

Brother MFC-9970CDW - Version Identification - Firmware “G”

=========================================

PoC

=========================================

PoC URL

http://my.vulnerable.printer/admin/admin_main.html?id=websettings"><script>
alert(1)</script>

=========================================

CVE Information

=========================================

CVE-2013-2507 is specific to Firmware G.

XSS at:

  admin/log_to_net.html  id parameter

  fax/copy_settings.html kind parameter

CVE-2013-2670 is for the issue that is present in both the Firmware G
report and Firmware L.

XSS at:

  admin/admin_main.html  name of an arbitrarily assigned URL parameter

CVE-2013-2671 is for the XSS issues that are only present in Firmware L.

CVEs for Firmware L:

Cleartext submission of password CVE-2013-2672

Password field with autocomplete enabled CVE-2013-2673

Cross-domain Referer leakage CVE-2013-2674

Frameable response (Clickjacking) CVE-2013-2675

Private IP addresses disclosed CVE-2013-2676

CVSS 2 Score = 4.5

Timeline

Attempt contact via e-mail in January 2013.

Call the Toll Free Support Line in March 2013.

Callback from Vendor in April 2013.

E-mail sent to Vendor in April 2013.

VENDOR UNRESPONSIVE

Published May 3, 2013

Hoyt LLC Research                                        Public Domain
Report

http://xss.cx/

=========================================

END

=========================================



-----BEGIN PGP SIGNATURE-----
Version: 10.2.0.2526

wsBVAwUBUYkKz3z+WcLIygj0AQiVegf/VFskxkdQkqUcqzKXHbTvnHLkkTA8fSgx
1orNQQwxahmpX2f5Jce4zuUz2g+35McwWCKR4kMnOio/9FnWl/w+zqiwmzFqfuHv
AIQAD0XXP+vKY/vSF0Bjtg9bUVlkNC4ilmyYVwWS9ycM0HOff3nwXxaZmpkr1Ibb
4Bn4ZeILFYaZYYfj3kM4JSsIuI+gisGmTDg6jMYfZhFDIps5nXeq2vDm34E7Sgx8
nSEOiS9FIq7YSh+ZIWCJE3Olcsx0DUiZuZXVIR4pT8mubB0f6Fx6wOVNQyiT5qNG
VQNG1QARkNQFxxuSZD11NtO8mszE+sC8ZBP4VfRjkvJ3c8DecyB5Mg==
=Ua1o
-----END PGP SIGNATURE-----