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AUSCERT External Security Bulletin Redistribution
Advisory (icsa-20-079-01) Systech NDS-5000 Terminal Server
23 March 2020
AusCERT Security Bulletin Summary
Product: NDS-5000 Terminal Server
Operating System: Network Appliance
Impact/Access: Cross-site Scripting -- Existing Account
Increased Privileges -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Execute Arbitrary Code/Commands -- Remote with User Interaction
CVE Names: CVE-2020-7006
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ICS Advisory (ICSA-20-079-01)
Systech NDS-5000 Terminal Server
Original release date: March 19, 2020
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 6.8
o ATTENTION: Exploitable remotely/low skill level to exploit
o Vendor: Systech Corporation
o Equipment: NDS-5000 Terminal Server
o Vulnerability: Cross-site Scripting
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow information
disclosure, limit system availability, and may allow remote code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of NDS-5000 Terminal Server, a network server, are
o NDS-5000 Terminal Server, NDS/5008 (8 Port, RJ45), firmware Version 02D.30
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE
The affected product is vulnerable to a stored cross-site scripting error,
which may allow an attacker to perform privileged operations on behalf of the
user, gain access to sensitive data belonging to the user, and remotely execute
CVE-2020-7006 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:R/S:U/
o CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
Murat Aydemir, Critical Infrastructure Penetration Test Specialist at Biznet
Bilisim A.S., reported this vulnerability to CISA.
Systech released firmware Version 02F.6 that eliminates this vulnerability. For
further information on installing this update, contact Systech Technical
Support at email@example.com .
CISA 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
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:
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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