ESB-2017.1992 - [Win] SIMPlight SCADA Software: Execute arbitrary code/commands - Existing account 2017-08-11

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1992
                         SIMPlight SCADA Software
                              11 August 2017

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

Product:           SIMPlight SCADA Software
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Mitigation
CVE Names:         CVE-2017-9661  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-222-01

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Advisory (ICSA-17-222-01)

SIMPlight SCADA Software

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 7.0

ATTENTION: Low skill level to exploit.

Vendor: SIMPlight

Equipment: SCADA Software

Vulnerability: Uncontrolled Search Path Element

AFFECTED PRODUCTS

The following versions of SIMPlight SCADA software, software for building
management systems and automated facilities, are affected:

    SCADA Software version 4.3.0.27 and prior.

IMPACT

Successful exploitation of this vulnerability could allow an attacker to
execute arbitrary code.

MITIGATION

SIMPlight has not responded to requests to work with NCCIC/ICS-CERT to
mitigate this vulnerability.

ICS-CERT recommends that users take defensive measures to minimize the
risk of exploitation of this 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.

In addition, ICS-CERT recommends that users take the following measures
to protect themselves from social engineering attacks:

    Do not click web links or open unsolicited attachments in email messages.
    Refer to Recognizing and Avoiding Email Scams for more information on
    avoiding email scams.
    Refer to Avoiding Social Engineering and Phishing Attacks for more
    information on social engineering attacks.

No known public exploits specifically target this vulnerability. This
vulnerability is not remotely exploitable.

VULNERABILITY OVERVIEW

UNCONTROLLED SEARCH PATH ELEMENT CWE-427

The uncontrolled search path element vulnerability has been identified,
which may allow an attacker to place a malicious DLL file within the search
path resulting in execution of arbitrary code.

CVE-2017-9661 has been assigned to this vulnerability. A CVSS v3
base score of 7.0 has been assigned; the CVSS vector string is
(AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

RESEARCHER

Karn Ganeshen reported this vulnerability to ICS-CERT.

BACKGROUND

Critical Infrastructure Sector(s): Chemical, Commercial Facilities, Critical
Manufacturing, Defense Industrial Base, Energy, Food and Agriculture,
Government Facilities, Healthcare and Public Health, Nuclear Reactors,
Materials, and Waste

Countries/Areas Deployed: Unknown

Company Headquarters Location: Russia

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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