3.5 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:S/C:N/I:P/A:N
5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.3 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
23.5%
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
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.
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.
The following Tridium products are affected:
A cross-site scripting vulnerability has been identified that may allow a remote attacker to inject code to some web pages affecting confidentiality.
CVE-2018-18985 has been assigned to this vulnerability. A CVSS v3 base score of 5.7 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N).
Daniel Santos and Elisa Costante of SecurityMatters reported the vulnerability to Tridium.
Tridium recommends that affected users upgrade to the latest versions of the software (login required).
Niagara Enterprise security 2.3u1 Version 2.3.118.6:
<https://software.niagara-central.com/ord?portal:/download/6284>
Niagara AX 3.8u4 Version 3.8.401.1:
<https://software.niagara-central.com/ord?portal:/download/6276>
Niagara 4.4u2 Version 4.4.93.40.2:
<https://software.niagara-central.com/ord?portal:/download/6268>
Niagara 4.6 Version 4.6.96.28.4:
<https://software.niagara-central.com/ord?portal:/download/6281>
For more information please see Tridiumβs security bulletin SB 2018-Tridium-2 at:
NCCIC and Tridium recommend users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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-12-146-01BβTargeted 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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-18985
cwe.mitre.org/data/definitions/79.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
software.niagara-central.com/ord?portal:/download/6268
software.niagara-central.com/ord?portal:/download/6276
software.niagara-central.com/ord?portal:/download/6281
software.niagara-central.com/ord?portal:/download/6284
twitter.com/CISAgov
twitter.com/intent/tweet?text=Tridium%20Niagara%20Enterprise%20Security%2C%20Niagara%20AX%2C%20and%20Niagara%204+https://www.cisa.gov/news-events/ics-advisories/icsa-18-333-02
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-18-333-02&title=Tridium%20Niagara%20Enterprise%20Security%2C%20Niagara%20AX%2C%20and%20Niagara%204
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-18-333-02
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-18-333-02
www.tridium.com/~/media/tridium/library/documents/collateral/technical%20bulletins/update%20your%20niagara%20software%20-%20fixes%20cross-site%20scripting%20vulnerability_2018-11.ashx?la=en
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Tridium%20Niagara%20Enterprise%20Security%2C%20Niagara%20AX%2C%20and%20Niagara%204&body=www.cisa.gov/news-events/ics-advisories/icsa-18-333-02
3.5 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:S/C:N/I:P/A:N
5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.3 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
23.5%