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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.2177
        Advisory (icsa-20-175-02) Honeywell ControlEdge PLC and RTU
                               24 June 2020

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

Product:           Honeywell ControlEdge
Publisher:         US-CERT
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-10628 CVE-2020-10624 

Original Bulletin: 
   https://www.us-cert.gov/ics/advisories/icsa-20-175-02

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ICS Advisory (ICSA-20-175-02)

Honeywell ControlEdge PLC and RTU

Original release date: June 23, 2020

Legal Notice

All information products included in https://us-cert.gov/ics 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 https://www.us-cert.gov/tlp/ .



1. EXECUTIVE SUMMARY

  o CVSS v3 5.9
  o ATTENTION: Remotely exploitable/low skill level to exploit
  o Vendor: Honeywell
  o Equipment: ControlEdge PLC and RTU
  o Vulnerabilities: Cleartext Transmission of Sensitive Information

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to
obtain passwords and session tokens.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of ControlEdge PLC and RTU, are affected:

  o ControlEdge PLC R130.2, R140, R150, and R151
  o ControlEdge RTU R101, R110, R140, R150, and R151

3.2 VULNERABILITY OVERVIEW

3.2.1 CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319

The affected device exposes unencrypted passwords on the network.

CVE-2020-10628 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:U/
C:H/I:N/A:N ).

3.2.2 CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319

The affected product exposes a session token on the network.

CVE-2020-10624 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:U/
C:H/I:N/A:N ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Energy,
    Water and Wastewater Systems
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Nikolay Sklyarenko of Kaspersky reported these vulnerabilities to Honeywell.

4. MITIGATIONS

Honeywell provided detailed information for mitigation on the insecure
communication in Control Edge PLC\RTU. Please access the support document
SN2020-04-17-01-ConotrolEdge-PLC-and- and-RTU-Secure-Communication (login
required). Download this document and follow the step by step instructions. The
user must be logged in to access the security notification.

Users who have difficulty accessing the document can contact Honeywell support 
.

CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:

  o Minimize network exposure for all control system devices and/or systems,
    and ensure that they are not accessible from the Internet .
  o Locate control system networks and remote devices behind firewalls, and
    isolate them from the business network.
  o 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.

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 these vulnerabilities.

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

Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870

CISA 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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