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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0777
                       ICS Advisory (ICSA-20-063-02)
                               4 March 2020

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

Product:           Emalytics Controller ILC
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Unauthorised Access -- Remote/Unauthenticated
                   Reduced Security    -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-8768  

Original Bulletin: 
   https://www.us-cert.gov/ics/advisories/icsa-20-063-02

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ICS Advisory (ICSA-20-063-02)

PHOENIX CONTACT Emalytics Controller ILC

Original release date: March 03, 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 9.4
  o ATTENTION: Exploitable remotely/low skill level to exploit
  o Vendor: Phoenix Contact
  o Equipment: Emalytics Controller ILC 2050 BI(L)
  o Vulnerability: Incorrect Permission Assignment for Critical Resource

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to change
the device configuration and start or stop services.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Emalytics Controller are affected:

  o ILC 2050 BI (Article number 2403160): all versions prior to 1.2.3
  o ILC 2050 BI-L (Article number 2404671): all versions prior to 1.2.3

3.2 VULNERABILITY OVERVIEW

3.2.1 INCORRECT PERMISSION ASSIGNMENT FOR CRITICAL RESOURCE CWE-732

This device lacks proper permissions for read and write access to the
configuration and start/stop services.

CVE-2020-8768 has been assigned to this vulnerability. A CVSS v3 base score of
9.4 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:L/I:H/A:H ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Energy
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

4. MITIGATIONS

Phoenix Contact strongly recommends affected users update to engineering
software Emalytics v1.2.3 or higher and recommission the controllers. The
updated version is available on the vendor's product page .

Please see advisory number VDE-2020-001 from CERT@VDE for more information.

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 this vulnerability.

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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