SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-500539505] Emerson DeltaV Wireless I/O Card Open SSH Port Vulnerability

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-11-29OtherEmersonEmersonN/ACVE-2016-9347 N/AN/AN/A

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# Emerson DeltaV Wireless I/O Card Open SSH Port Vulnerability
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### OVERVIEW

Emerson has identified an open SSH port vulnerability in the DeltaV Wireless I/O Card. Emerson has produced a firmware patch that disables the SSH port.
This vulnerability could be exploited remotely.



### AFFECTED PRODUCTS

Emerson reports that the vulnerability affects the following products:
SE4801T0X Redundant Wireless I/O Card V13.3, and
SE4801T1X Simplex Wireless I/O Card V13.3
Note: The DeltaV system is not susceptible to this vulnerability except for the products and versions listed above.



### IMPACT

An attacker may be able to use this open port to access the file system of devices using the affected product.
Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.



### BACKGROUND

Emerson is a US-based company that maintains offices in several countries around the world, including the US, UK, Netherlands, Italy, India, Germany, France, Czech Republic, China, and Australia.
The affected products, DeltaV Wireless I/O Cards, are used to connect workstations and servers in the DeltaV network. According to Emerson, DeltaV Wireless I/O Cards are deployed across several sectors including Chemical and Energy. Emerson estimates that these products are used worldwide.



### VULNERABILITY CHARACTERIZATION

# VULNERABILITY OVERVIEW

MISSING AUTHENTICATION FOR CRITICAL FUNCTIONa
DeltaV Wireless I/O Cards (WIOC) running the firmware available in the DeltaV system, release v13.3, have the SSH (Secure Shell) functionality enabled unnecessarily.
CVE-2016-9347b has been assigned to this vulnerability. A CVSS v3 base score of 5.0 has been assigned; the CVSS vector string is (AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L)




### VULNERABILITY DETAILS

# EXPLOITABILITY

This vulnerability could be exploited remotely.



# EXISTENCE OF EXPLOIT

No known public exploits specifically target this vulnerability.



# DIFFICULTY

Crafting a working exploit for this vulnerability would be difficult.



### MITIGATION

Emerson released the solution for this vulnerability in their Guardian Support Knowledge Base Article NK-1500-0152 dated September 30, 2016 (hotfix bundle 'DeltaV_133_WIOC_02_CSS')
The provided fix disables the SSH port that is always available in the WIOC running v13.3 original firmware.
In order to limit exposure to these and other vulnerabilities, Emerson recommends that users deploy and configure DeltaV systems and related components as described in the following documents:
DeltaV Security Manual
http://www2.emersonprocess.com/siteadmincenter/PM%20DeltaV%20Documents/Manuals/CS_DeltaV_Security_Manual-TOC%20only.pdf


Emerson's Wireless Security Whitepaper
http://www2.emersonprocess.com/siteadmincenter/PM%20Central%20Web%20Documents/Emerson%20Wireless%20Security.pdf