All information products included in https://us-cert.cisa.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://us-cert.cisa.gov/tlp/.
1. EXECUTIVE SUMMARY
- CVSS v3 5.7
- ATTENTION: Exploitable remotely/low skill level
- Vendor: Tridium
- Equipment: Niagara Enterprise Security, Niagara AX, and Niagara 4
- Vulnerability: Cross-site Scripting
2. REPOSTED INFORMATION
This advisory was originally posted to the HSIN ICS-CERT library on November 29, 2018, and is being released to the NCCIC/ICS-CERT website.
3. RISK EVALUATION
Successful exploitation of this vulnerability could allow an authenticated user to inject client-side scripts into some web pages that could then be viewed by other users.
4. TECHNICAL DETAILS
4.1 AFFECTED PRODUCTS
The following Tridium products are affected:
- Niagara Enterprise Security 2.3u1, all versions prior to 22.214.171.124,
- Niagara AX 3.8u4, all versions prior to 3.8.401.1,
- Niagara 4.4u2, all versions prior to 126.96.36.199.2, and
- Niagara 4.6, all versions prior to 188.8.131.52.4
4.2 VULNERABILITY OVERVIEW
A cross-site scripting vulnerability has been identified that may allow a remote attacker to inject code to some web pages affecting confidentiality.
- CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Critical Manufacturing, Government Facilities, and Information Technology
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: United States
Daniel Santos and Elisa Costante of SecurityMatters reported the vulnerability to Tridium.
Niagara Enterprise security 2.3u1 Version 184.108.40.206:
Niagara AX 3.8u4 Version 3.8.401.1:
Niagara 4.4u2 Version 220.127.116.11.2:
Niagara 4.6 Version 18.104.22.168.4:
For more information please see Tridium’s security bulletin SB 2018-Tridium-2 at:
- Review and validate the list of users who are authorized and who can authenticate to Niagara.
- Allow only trained and trusted persons to have physical access to the system, including devices that have connection to the system though the Ethernet port.
- If remote connections to the network are required, consider using a VPN or other means to ensure secure remote connections into the network where the system is located.
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 Strategies.
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 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.
Please share your thoughts.
We recently updated our anonymous product survey; we'd welcome your feedback.