Hash: SHA256

             AUSCERT External Security Bulletin Redistribution

      GE Bently Nevada 3500/22M Improper Authorization Vulnerability
                              10 October 2016


        AusCERT Security Bulletin Summary

Product:           GE Bently Nevada 3500/22M
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-5788  

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Advisory (ICSA-16-252-01)

GE Bently Nevada 3500/22M Improper Authorization Vulnerability

Original release date: October 06, 2016

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/.


This advisory was originally posted to the US-CERT secure Portal library on 
September 8, 2016, and is being released to the NCCIC/ICS-CERT web site.

GE has identified an improper authorization vulnerability in the GE Bently 
Nevada 3500/22M monitoring system. GE has produced a new firmware version to 
mitigate this vulnerability in the USB version of the GE Bently Nevada 
3500/22M monitoring system.

This vulnerability could be exploited remotely.


The following GE Bently Nevada 3500/22M firmware versions are affected:

- - GE Bently Nevada 3500/22M (USB version), all versions prior to firmware 
Version 5.0, and

- - GE Bently Nevada 3500/22M (serial version), all versions.


Successful exploitation of the identified vulnerability may allow a remote 
attacker to gain unauthorized access to the affected device with elevated 

Impact to individual organizations depends on many factors that are unique to
each organization. ICS-CERT recommends that organizations evaluate the impact
of this vulnerability based on their operational environment, architecture, 
and product implementation.


GE Bently Nevada is a wholly owned subsidiary of GE, a US-based company that 
maintains offices in several countries around the world.

The affected product, GE Bently Nevada 3500/22M, is a vibration monitoring 
system. According to GE, the GE Bently Nevada 3500/22M is deployed across 
several sectors including Chemical and Energy. GE estimates that these 
products are used worldwide.




Several open ports have been identified on the affected device, which allow 
unauthorized access to the device with elevated privileges.

CVE-2016-5788 [b] has been assigned to this vulnerability. A CVSS v3 base score 
of 10.0 has been assigned; the CVSS vector string is 
(AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). [c]



This vulnerability could be exploited remotely.


No known public exploits specifically target this vulnerability.


An attacker with a low skill would be able to exploit this vulnerability.


GE has released a new firmware version for the GE Bently Nevada 3500/22M TDI 
USB monitoring system, Version 5.0. GEs new firmware can only be applied to 
the USB version of the GE Bently Nevada 3500/22M monitoring system. Users 
registered with a GE Bently Nevada Technical Support Agreement can download 
Version 5.0 and access GEs Technical Information Letter (TIL-149700250) 
detailing further mitigation strategies at the following URL with a valid 

http://www.bntechsupport.com (link is external)

GE recommends that users using the serial version of the GE Bently Nevada 
3500/22M upgrade the affected device.

Users who are concerned about the security of their GE Bently Nevada 3500 
System should:

- - Employ system hardening techniques for GE Bently Nevadas 3500 System as 
outlined in document 106M9733 - 3500 Hardening Guideline. This document is 
available through www.bntechsupport.com (link is external).

- - Contact GE Bently Nevada for information regarding installations compliant 
to IEC 62443-2-4 Level 1.

- - Implement a bump-in-the-wire solution to provide secure communication 
between endpoints, which may enhance security.

- - Effectively segment networks and implement demilitarized zones (DMZs) with 
properly configured firewalls to selectively control and monitor traffic 
passed between zones.

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 at: 
http://ics-cert.us-cert.gov/content/recommended-practices. 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 ICSCERT 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.

a. CWE-285: Improper Authorization, 
http://cwe.mitre.org/data/definitions/285.html, web site last accessed October
06, 2016.

b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-5788, NIST 
uses this advisory to create the CVE web site report. This web site will be 
active sometime after publication of this advisory.

c. CVSS Calculator, 
web site last accessed October 06, 2016.

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: 

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 

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
Comment: http://www.auscert.org.au/render.html?it=1967