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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.4543
                       ICS Advisory (ICSA-19-337-01)
                              4 December 2019

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

Product:           Reliable Controls LicenseManager
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Administrator Compromise -- Remote with User Interaction
                   Denial of Service        -- Remote with User Interaction
                   Access Confidential Data -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-18245  

Original Bulletin: 
   https://www.us-cert.gov/ics/advisories/icsa-19-337-01
   https://applied-risk.com/assets/uploads/whitepapers/Reliable_Controls-LicenseManager-Advisory-2019.pdf

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ICS Advisory (ICSA-19-337-01)

Reliable Controls LicenseManager

Original release date: December 03, 2019

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/ .

1. EXECUTIVE SUMMARY

  o CVSS v3 7.8
  o ATTENTION: Low skill level to exploit
  o Vendor: Reliable Controls
  o Equipment: LicenseManager
  o Vulnerability: Unquoted Search Path or Element

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to crash
the system, view sensitive data, or execute arbitrary commands.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of LicenseManager are affected:

  o RC-LicenseManager: Versions 3.4 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 UNQUOTED SEARCH PATH OR ELEMENT CWE-428

An authenticated user may be able to insert malicious code into the system root
path, which may allow execution of code with elevated privileges of the
application.

CVE-2019-18245 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:L/UI:N/S:U/
C:H/I:H/A:H ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Critical
    Manufacturing, Government Facilities
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Canada

3.4 RESEARCHER

Gjoko Krstic of Applied Risk reported this vulnerability to CISA.

4. MITIGATIONS

Reliable Controls has released RC-LicenseManager Version 3.5, which is bundled
for use within the latest RC-Studio software. Reliable Controls recommends
users upgrade to RC Studio 3.6.3, which can be obtained at the following link:

https://www.reliablecontrols.com/support/software/releases.php (Login Required)

CISA recommends users take the following measures to protect themselves from
social engineering attacks:

  o Do not click web links or open unsolicited attachments in email messages.
  o Refer to Recognizing and Avoiding Email Scams for more information on
    avoiding email scams.
  o Refer to Avoiding Social Engineering and Phishing Attacks for more
    information on social engineering attacks.
  o Every program and every user of the system should operate using the least
    set of privileges necessary to complete the job.

CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices
on the ICS webpage on us-cert.gov . 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
on the ICS webpage on us-cert.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .

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

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

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