ESB-2018.1079 - [Appliance] ATI Systems Emergency Mass Notification Systems: Provide misleading information - Remote/unauthenticated 2018-04-11

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1079
Advisory (ICSA-18-100-01): Multiple vulnerabilities have been identified in
              ATI Systems Emergency Mass Notification Systems
                               11 April 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ATI Systems Emergency Mass Notification Systems
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-8864 CVE-2018-8862 

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-100-01

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Advisory (ICSA-18-100-01)

ATI Systems Emergency Mass Notification Systems

Original release date: April 10, 2018

Legal Notice

All information products included in http://ics-cert.us-cert.gov 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 http://www.us-cert.gov/tlp/.

1. EXECUTIVE SUMMARY

CVSS v3 5.3

ATTENTION: Exploitable remotely.

Vendor: Acoustic Technology, Inc. (ATI Systems)

Equipment: ATI Emergency Mass Notification Systems

Vulnerabilities: Improper Authentication, Missing Encryption of Sensitive 
Data.

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could trigger false alarms.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following ATIs Emergency Mass Notification Systems devices are affected:

HPSS16

HPSS32

MHPSS, and

ALERT4000.

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER AUTHENTICATION CWE-287

Improper authentication vulnerability caused by specially crafted malicious 
radio transmissions may allow an attacker to remotely trigger false alarms.

CVE-2018-8862 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is 
(AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).

3.2.2 MISSING ENCRYPTION OF SENSITIVE DATA CWE-311

Missing encryption of sensitive data vulnerability caused by specially crafted
malicious radio transmissions may allow an attacker to remotely trigger false
alarms.

CVE-2018-8864 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is 
(AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).

3.3 BACKGROUND

Critical Infrastructure Sectors: Commercial Facilities, Defense Industrial 
Base, Emergency Services, Government Facilities, Nuclear Reactors, Materials,
and Waste

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Massachusetts

3.4 RESEARCHER

Balint Seeber of Bastille reported these vulnerabilities to NCCIC.

4. MITIGATIONS

ATI has created a patch which adds additional security features to the command
packets sent over the radio. ATI is testing this patch, and it will be 
available upon request. Many systems are engineered to meet specific user 
needs and users need to make sure any upgrades are appropriate for their 
systems.

ATI recommends that, where feasible, simple voice radios be replaced with 
digital P-25 (APCO) radios, which provide highly secure encrypted links.

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 in the ICS-CERT Technical Information Paper, 
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation 
Strategies, that is available for download from the ICS-CERT website.

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 these vulnerabilities. High skill
level is needed to exploit.

Contact Information

For any questions related to this report, please contact the NCCIC at:

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov (link sends e-mail)

Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information: 
http://ics-cert.us-cert.gov

or incident reporting: https://ics-cert.us-cert.gov/Report-Incident?

The NCCIC 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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