Systech NDS-5000 Terminal Server

# ICS Advisory (ICSA-20-079-01) ## Systech NDS-5000 Terminal Server Original release date: March 19, 2020 [Print Document](javascript:window.print\(\);) [Tweet](https://twitter.com/share?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-20-079-01) [Like Me](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-20-079-01) [Share](http://www.addthis.com/bookmark.php?url=https%3A%2F%2Fus- cert.cisa.gov%2Fics%2Fadvisories%2Ficsa-20-079-01) ### Legal Notice All information products included in [https://us-cert.gov/ics](/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/](/tlp/). * * * ## 1\. EXECUTIVE SUMMARY * **CVSS v3 6.8** * **ATTENTION:** Exploitable remotely/low skill level to exploit * **Vendor:** Systech Corporation * **Equipment:** NDS-5000 Terminal Server * **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 affected: * 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 SCRIPTING') CWE-79](https://cwe.mitre.org/data/definitions/79.html) 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 arbitrary code. [CVE-2020-7006](http://web.nvd.nist.gov/view/vuln/detail?vulnId=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/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H)). ### 3.3 BACKGROUND * **CRITICAL INFRASTRUCTURE SECTORS:** Healthcare and Public Health * **COUNTRIES/AREAS DEPLOYED:** Worldwide * **COMPANY HEADQUARTERS LOCATION:** United States ### 3.4 RESEARCHER Murat Aydemir, Critical Infrastructure Penetration Test Specialist at Biznet Bilisim A.S., reported this vulnerability to CISA. ## 4\. MITIGATIONS Systech released firmware [Version 02F.6](https://ww2.systech.com/downloads) that eliminates this vulnerability. For further information on installing this update, contact Systech Technical Support at [support@systech.com](mailto:support@systech.com). CISA recommends users take the following measures to protect themselves from social engineering attacks: * Do not click web links or open unsolicited attachments in email messages. * Refer to [Recognizing and Avoiding Email Scams](https://www.us-cert.gov/sites/default/files/publications/emailscams_0905.pdf) for more information on avoiding email scams. * Refer to [Avoiding Social Engineering and Phishing Attacks](https://www.us-cert.gov/ncas/tips/ST04-014) 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](https://www.us-cert.gov/ics/recommended-practices) on the ICS webpage on [us-cert.gov](https://www.us-cert.gov/ics). Several recommended practices are available for reading and download, including [Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies](https://www.us- cert.gov/sites/default/files/recommended_practices/NCCIC_ICS- CERT_Defense_in_Depth_2016_S508C.pdf). Additional mitigation guidance and recommended practices are publicly available on the [ICS webpage on us-cert.gov](https://www.us-cert.gov/ics) in the Technical Information Paper, [ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies](https://www.us-cert.gov/ics/tips/ICS- TIP-12-146-01B). 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.