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AUSCERT External Security Bulletin Redistribution
ESB-2020.2973
Advisory (icsa-20-240-01) Red Lion N-Tron 702-W, 702M12-W
31 August 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Red Lion N-Tron 702-W
Red Lion N-Tron 702M12-W
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Cross-site Request Forgery -- Remote with User Interaction
Cross-site Scripting -- Existing Account
Access Confidential Data -- Existing Account
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-16210 CVE-2020-16208 CVE-2020-16206
CVE-2020-16204 CVE-2017-16544
Reference: ESB-2019.3524
ESB-2019.1136
ESB-2018.2183.3
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-20-240-01
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ICS Advisory (ICSA-20-240-01)
Red Lion N-Tron 702-W, 702M12-W
Original release date: August 27, 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 9.8
o ATTENTION: Exploitable remotely/low skill level to exploit
o Vendor: Red Lion
o Equipment: N-Tron 702-W / 702M12-W
o Vulnerabilities: Reflected Cross-site Scripting, Stored Cross-site
Scripting, Cross-site Request Forgery, Hidden Functionality, Use of
Unmaintained Third-Party Components
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to
gain unauthorized access to sensitive information, execute system commands, and
perform actions in the context of an attacked user.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following Red Lion products are affected:
o N-Tron 702-W: All versions
o N-Tron 702M12-W: All versions
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE
SCRIPTING') CWE-79
The affected product is vulnerable to reflected cross-site scripting, which may
allow an attacker to remotely execute arbitrary code and perform actions in the
context of an attacked user.
CVE-2020-16210 has been assigned to this vulnerability. A CVSS v3 base score of
9.0 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:R/S:C/
C:H/I:H/A:H ).
3.2.2 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE
SCRIPTING') CWE-79
The affected product is vulnerable to stored cross-site scripting, which may
allow an attacker to remotely execute arbitrary code to gain access to
sensitive data.
CVE-2020-16206 has been assigned to this vulnerability. A CVSS v3 base score of
9.0 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:R/S:C/
C:H/I:H/A:H ).
3.2.3 CROSS-SITE REQUEST FORGERY (CSRF) CWE-352
The affected product is vulnerable to cross-site request forgery, which may
allow an attacker to modify different configurations of a device by luring an
authenticated user to click on a crafted link.
CVE-2020-16208 has been assigned to this vulnerability. A CVSS v3 base score of
8.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:R/S:U/
C:H/I:H/A:H ).
3.2.4 HIDDEN FUNCTIONALITY (BACKDOOR) CWE-912
The affected product is vulnerable due to an undocumented interface found on
the device, which may allow an attacker to execute commands as root on the
device.
CVE-2020-16204 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/
C:H/I:H/A:H ).
3.2.5 USE OF UNMAINTAINED THIRD-PARTY COMPONENTS CWE-1104
The affected product is vulnerable due to outdated software components, which
may allow an attacker to gain access to sensitive information and take control
of the device.
CVE-2017-16544 has been assigned to this vulnerability. A CVSS v3 base score of
8.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/
C:H/I:H/A:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Energy,
Transportation Systems, Water and Wastewater Systems
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Thomas Weber from SEC Consult Vulnerability Lab reported these vulnerabilities
to CISA.
4. MITIGATIONS
Red Lion's 702-W Series was discontinued in 2018 and cannot be updated. Red
Lion recommends these products be used locally within a secure network.
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 also 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.
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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