ESB-2018.2223 - [Win] Johnson Controls Metasys and BCPro: Access confidential data - Remote/unauthenticated 2018-08-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2223
 A vulnerability has been identified in Johnson Controls Metasys and BCPro
                               1 August 2018

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

Product:           Johnson Controls Metasys System
                   Johnson Controls BCPro (BCM)
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-10624  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-212-02

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More Advisories

Advisory (ICSA-18-212-02)

Johnson Controls Metasys and BCPro

Original release date: July 31, 2018

Legal Notice

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"as is" for informational purposes only. The Department of Homeland Security 
(DHS) does not provide any warranties of any kind regarding any information 
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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

CVSS v3 4.3

ATTENTION: Exploitable on an adjacent network/low skill level to exploit

Vendor: Johnson Controls

Equipment: Metasys and BCPro

Vulnerability: Information Exposure Through an Error Message

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to 
obtain technical information about the Metasys or BCPro server, allowing an 
attacker to target a system for attack.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Johnson Controls reports that the vulnerability affects the following 
products:

Metasys System, Versions 8.0 and prior, and

BCPro (BCM), all versions prior to 3.0.2

3.2 VULNERABILITY OVERVIEW

3.2.1 INFORMATION EXPOSURE THROUGH AN ERROR MESSAGE CWE-209

This vulnerability results from improper error handling in HTTP-based 
communications with the server, which could allow an attacker to obtain 
technical information.

CVE-2018-10624 has been assigned to this vulnerability. A CVSS v3 base score 
of 4.3 has been calculated; the CVSS vector string is 
(AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing

COUNTRIES/AREAS DEPLOYED: Worldwide

COMPANY HEADQUARTERS LOCATION: Milwaukee, Wisconsin

3.4 RESEARCHER

Dan Regalado of Zingbox reported this vulnerability to NCCIC.

4. MITIGATIONS

Johnson Controls recommends the following mitigations:

This issue was remediated in Metasys v8.1 (April, 2016). Users should upgrade
to the latest product version (9.0). For Metasys information, contact your 
Metasys field service/sales representative.

This issue was remediated in the BCPro Workstation in BCPro v3.0 (October, 
2017) and mitigated for the BACnet Router and Gateway in BCPro v3.0.2 (June, 
2018). Users should upgrade to the latest product versions. For more BCPro 
information, contact your BCPro sales and support representative.

Additional information for Johnson Controls:

Product security contact information, Building Automation System hardening, 
and security resources are located at our product security website 
http://www.johnsoncontrols.com/buildings/specialty-pages/product-security

Contact information: Johnson Controls Global Product Security at 
productsecurity@jci.com

NCCIC recommends users take defensive measures to minimize the risk of 
exploitation of this vulnerability. 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.

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

NCCIC 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 on the ICS-CERT website 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 NCCIC for 
tracking and correlation against other incidents.

No known public exploits specifically target this vulnerability.

Contact Information

For any questions related to this report, please contact the NCCIC at:

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov

Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information: 
http://ics-cert.us-cert.gov

or incident reporting: https://ics-cert.us-cert.gov/Report-Incident?

The NCCIC 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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