ESB-2017.2381 - [Win] Phoenix Contact mGuard Device Manager: Multiple vulnerabilities 2017-09-20

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2381
      Advisory (ICSA-17-262-01) PHOENIX CONTACT mGuard Device Manager
                             20 September 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Phoenix Contact mGuard Device Manager
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated      
                   Access Privileged Data          -- Remote with User Interaction
                   Denial of Service               -- Remote/Unauthenticated      
                   Reduced Security                -- Remote/Unauthenticated      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-10198 CVE-2017-10176 CVE-2017-10135
                   CVE-2017-10118 CVE-2017-10116 CVE-2017-10115
                   CVE-2017-10108 CVE-2017-10102 CVE-2017-10078
                   CVE-2017-10053  

Reference:         CVE-2017-10053

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-262-01

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Advisory (ICSA-17-262-01)

PHOENIX CONTACT mGuard Device Manager

Original release date: September 19, 2017


Legal Notice

All information products included in http://ics-cert.us-cert.gov are provided
"as is" for informational purposes only. The Department of Homeland Security 
(DHS) does not provide any warranties of any kind regarding any information 
contained within. DHS does not endorse any commercial product or service, 
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For 
more information about TLP, see http://www.us-cert.gov/tlp/.

CVSS v3 9.0

ATTENTION: Remotely exploitable/low skill level to exploit.

Vendor: PHOENIX CONTACT

Equipment: mGuard Device Manager

Vulnerabilities: Improper Access Control vulnerabilities for Oracle Java SE

AFFECTED PRODUCTS

The following versions of mGuard Device Manager, a device management software
for mGuard devices, are affected:

mGuard Device Manager 1.8.0 and older.

IMPACT

Successful exploitation of these vulnerabilities could allow unauthorized 
remote access, modification of data, and may allow remote and local users to 
gain elevated privileges.

MITIGATION

PHOENIX CONTACT recommends that all users of the affected product on Windows 
should update to at least Version 1.8.0.1. The update can be performed by 
simply executing the installer for Version 1.8.0.1 on a Windows system where 
the product is installed in Version 1.8.0. The installer is available for 
download on the product page, in section "Software" on the Downloads tab at 
the following location:

https://www.phoenixcontact.com/online/portal/us?uri=pxc-oc-itemdetail:pid=2981974
(link is external)

For more information please refer to the document "How to upgrade mGuard 
device manager" downloaded with the installer.

PHOENIX CONTACT recommends that all users of the affected product on Linux 
should update Java to the latest version. When using the packet source 
delivered by PHOENIX CONTACT on Ubuntu, this is simply done by using the 
software updater of the operating system.

NCCIC/ICS-CERT recommends that users take defensive measures to minimize the 
risk of exploitation of these vulnerabilities. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and 
ensure that they are not accessible from the Internet.

Locate control system networks and remote devices behind firewalls, and 
isolate them from the business network.

When remote access is required, use secure methods, such as Virtual Private 
Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize that VPN is only
as secure as the connected devices.

ICS-CERT reminds organizations to perform proper impact analysis and risk 
assessment prior to deploying defensive measures.

ICS-CERT also provides a section for control systems security recommended 
practices on the ICS-CERT web page. Several recommended practices are 
available for reading and download, including Improving Industrial Control 
Systems Cybersecurity with Defense-in-Depth Strategies.

Additional mitigation guidance and recommended practices are publicly 
available in the ICS-CERT Technical Information Paper, 
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation 
Strategies, that is available for download from the ICS-CERT web site.

Organizations observing any suspected malicious activity should follow their 
established internal procedures and report their findings to ICS-CERT for 
tracking and correlation against other incidents.

No known public exploits specifically target these vulnerabilities.

VULNERABILITY OVERVIEW

IMPROPER ACCESS CONTROL CWE-284

Improper Access Control vulnerabilities have been reported for Oracle Java SE,
which is provided with PHOENIX CONTACT FL MGUARD DM. According to Oracle, the
supported Java versions affected by these vulnerabilities are Java SE: 8u131,
7u141 and 6u151, Java SE Embedded: 8u131, and JRockit: R28.3.14. PHOENIX 
CONTACT provided FL MGUARD DM 1.8.0 for Windows with Java SE 8u131.

CVE-2017-10102, CVE-2017-10116, CVE-2017-10078, CVE-2017-10115, 
CVE-2017-10118, CVE-2017-10176, CVE-2017-10198, CVE-2017-10135, 
CVE-2017-10053, CVE-2017-10108 have been assigned to these vulnerabilities. A
CVSS v3 base score of 9.0 has been assigned; the CVSS vector string is 
(AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H).

For more information on these vulnerabilities, please refer to sources cited 
at these locations:

Published advisory of CERT@VDE:

https://cert.vde.com/de-de/advisories/vde-2017-002 (link is external)

Oracle Critical Patch Update Advisory report:

http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html 
(link is external)

RESEARCHER

PHOENIX CONTACT reported these vulnerabilities to CERT@VDE. CERT@VDE 
coordinated these vulnerabilities with ICS-CERT.

BACKGROUND

Critical Infrastructure Sectors: Communications, Critical Manufacturing, 
Information Technology

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Germany

Contact Information

For any questions related to this report, please contact ICS-CERT at:

Email: ics-cert@hq.dhs.gov (link sends e-mail)

Toll Free: 1-877-776-7585

International Callers: (208) 526-0900

For industrial control systems security information and incident reporting: 
http://ics-cert.us-cert.gov

ICS-CERT continuously strives to improve its products and services. You can 
help by choosing one of the links below to provide feedback about this 
product.

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