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AUSCERT External Security Bulletin Redistribution
Advisory (icsa-19-178-04) SICK MSC800
28 June 2019
AusCERT Security Bulletin Summary
Product: SICK MSC800
Publisher: ICS CERT
Operating System: Network Appliance
Impact/Access: Increased Privileges -- Remote/Unauthenticated
CVE Names: CVE-2019-10979
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ICS Advisory (ICSA-19-178-04)
Original release date: June 27, 2019
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1. EXECUTIVE SUMMARY
o CVSS v3 9.8
o ATTENTION: Exploitable remotely/low skill level to exploit
o Vendor: SICK
o Equipment: MSC800
o Vulnerability: Use of Hard-coded Credentials
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow a low-skilled remote
attacker to reconfigure settings and/or disrupt the functionality of the
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of MSC800, a programmable logic controller, are
o MSC800 all versions prior to Version 4.0
3.2 VULNERABILITY OVERVIEW
3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798
The affected firmware versions contain a hard-coded customer account password.
CVE-2019-10979 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Germany
Tri Quach of Amazon's Customer Fulfillment Technology Security (CFTS) group
reported this vulnerability to NCCIC.
SICK recommends affected users upgrade to the latest firmware version (v4.0).
The patch and installation procedure for the firmware update is available from
the responsible SICK representative. Until the firmware update is installed,
general security practices should be utilized.
In case the referenced patches cannot be applied, the following general
security practices could mitigate the associated risk.
For more information SICK has released a security notification that can be
found at: https://www.sick.com/de/en/service-and-support/
NCCIC 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 Blocking/Monitoring Ports TCP/2111 or TCP/2112
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.
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
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.
For any questions related to this report, please contact the NCCIC at:
Toll Free: 1-888-282-0870
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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