ESB-2017.1996 - [Win] Fuji Electric Monitouch V-SFT: Multiple vulnerabilities 2017-08-11

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1996
                       Fuji Electric Monitouch V-SFT
                              11 August 2017

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

Product:           Fuji Electric Monitouch V-SFT
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
                   Increased Privileges            -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-9662 CVE-2017-9660 CVE-2017-9659

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-222-04

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Advisory (ICSA-17-222-04)

Fuji Electric Monitouch V-SFT

Original release date: August 10, 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 7.3

ATTENTION: Remotely exploitable/low skill level to exploit.

Vendor: Fuji Electric

Equipment: Monitouch V-SFT

Vulnerabilities: Stack-Based Buffer Overflow, Heap-Based Buffer Overflow,
Improper Privilege Management

AFFECTED PRODUCTS

The following versions of Monitouch V-SFT, a screen configuration software,
are affected:

    Monitouch V-SFT, versions prior to Version 5.4.43.0

IMPACT

Successful exploitation of these vulnerabilities could allow remote code
execution or cause the software that the attacker is accessing to crash. The
improper privilege management vulnerability could allow an attacker with
local access to escalate privileges.

MITIGATION

Fuji Electric has released a new version of Monitouch V-SFT, Version
5.4.43.0, to fix these vulnerabilities. Users can download the update at
the following location:

http://proself.hakko-elec.co.jp/public/qAW0wAxKdQoAj_0BP8ddt6DJIYPCHSIrxFA09Q5YfPMd
(link is external)

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

STACK-BASED BUFFER OVERFLOW CWE-121

The stack-based buffer overflow vulnerability has been identified, which
may cause a crash or allow remote code execution.

CVE-2017-9659 has been assigned to this vulnerability. A CVSS v3
base score of 7.3 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

HEAP-BASED BUFFER OVERFLOW CWE-122

A heap-based buffer overflow vulnerability has been identified, which may
cause a crash or allow remote code execution.

CVE-2017-9660 has been assigned to this vulnerability. A CVSS v3
base score of 7.3 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

IMPROPER PRIVILEGE MANAGEMENT CWE-269

Monitouch V-SFT is installed in a directory with weak access controls by
default, which could allow an authenticated attacker with local access to
escalate privileges.

CVE-2017-9662 has been assigned to this vulnerability. A CVSS v3
base score of 4.5 has been assigned; the CVSS vector string is
(AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L).

RESEARCHER

Independent researchers Fritz Sands and kimiya working with Trend Micro's
Zero Day Initiative identified these vulnerabilities.

BACKGROUND

Critical Infrastructure Sector: Critical Manufacturing, Energy

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Japan

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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