ESB-2017.2410 - [Appliance] Saia Burgess Controls PCD Controllers: Access confidential data - Remote/unauthenticated 2017-09-22

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2410
     Advisory (ICSA-17-234-05): Saia Burgess Controls PCD Controllers
                             22 September 2017

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

Product:           Saia Burgess Controls PCD Controllers
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-9628  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-234-05

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Advisory (ICSA-17-234-05)

Saia Burgess Controls PCD Controllers

Original release date: September 21, 2017

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/.

CVSS v3 5.3

ATTENTION: Remotely exploitable/low skill level to exploit.

Vendor: Saia Burgess Controls

Equipment: PCD Controllers

Vulnerability: Information Exposure

REPOSTED INFORMATION

This advisory was originally posted to the NCCIC Portal on August 22, 2017, 
and is being released to the NCCIC/ICS-CERT web site.

AFFECTED PRODUCTS

Saia Burgess Controls reports that the vulnerability affects the following PCD
Controllers:

PCD firmware versions prior to 1.28.16 or 1.24.69

IMPACT

Successful exploitation of this vulnerability could allow an attacker to 
obtain information in memory.

MITIGATION

Saia Burgess Controls strongly recommends that users update to the latest 
versions of firmware, Version 1.28.16 or 1.24.69.

The security upgrade section of the Saia Burgess Controls web page links to 
the latest versions and offers security tips and upgrade information:

https://www.sbc-support.com/en/product-category/communication-protocols/pcd-on-internet/upgrade-it-security/
(link is external)

Please see the latest update information for this product at the following web
site:

https://www.sbc-support.com/en/product-index/ (link is external)

ICS-CERT recommends that users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and 
ensure that they are not accessible from the Internet.

Locate control system networks and remote devices behind firewalls, and 
isolate them from the business network.

When remote access is required, use secure methods, such as Virtual Private 
Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize that VPN is only
as secure as the connected devices.

ICS-CERT reminds organizations to perform proper impact analysis and risk 
assessment prior to deploying defensive measures.

ICS-CERT 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 web site.

Organizations observing any suspected malicious activity should follow their 
established internal procedures and report their findings to ICS-CERT for 
tracking and correlation against other incidents.

No known public exploits specifically target this vulnerability.

VULNERABILITY OVERVIEW

INFORMATION EXPOSURE CWE-200

In certain circumstances, the device pads Ethernet frames with memory 
contents.

CVE-2017-9628 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been assigned; the CVSS vector string is 
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

RESEARCHER

Davide Fauri of Eindhoven University of Technology discovered and reported 
this vulnerability to ICS-CERT.

BACKGROUND

Critical Infrastructure Sector: Chemical and Energy

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Switzerland

Contact Information

For any questions related to this report, please contact ICS-CERT at:

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

Toll Free: 1-877-776-7585

International Callers: (208) 526-0900

For industrial control systems security information and incident reporting: 
http://ics-cert.us-cert.gov

ICS-CERT 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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