SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-390566146] Moxa OnCell Security Vulnerabilities

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-11-03NETWORKMoxa OnCellMaxim RuppN/ACVE-2016-8362, CVE-2016-8363N/AN/AN/A

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# Moxa OnCell Security Vulnerabilities
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### OVERVIEW

Independent researcher Maxim Rupp has identified authorization bypass and disclosed OS commanding vulnerabilities in Moxa's OnCell Security Software. Moxa has produced a new version to mitigate these vulnerabilities.

These vulnerabilities could be exploited remotely.





### AFFECTED PRODUCTS

The following Moxa OnCell versions are affected:

oOnCellG3470A-LTE,
oAWK-1131A/3131A/4131A Series,
oAWK-3191 Series,
oAWK-5232/6232 Series,
oAWK-1121/1127 Series,
oWAC-1001 V2 Series,
oWAC-2004 Series,
oAWK-3121-M12-RTG Series,
oAWK-3131-M12-RCC Series,
oAWK-5232-M12-RCC Series,
oTAP-6226 Series,
oAWK-3121/4121 Series,
oAWK-3131/4131 Series, and
oAWK-5222/6222 Series.





### IMPACT

An unauthorized user could download files by accessing a specific URL. An unauthenticated user is able to execute arbitrary command by web console.

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





### BACKGROUND

Moxa is a Taiwan-based company that maintains offices in several countries around the world, including the US, UK, India, Germany, France, China, Russia, and Brazil.

The affected product, OnCell Security Software, is cellular IP gateways that can connect serial or Ethernet devices to a cellular network. According to Moxa, OnCell Security Software is deployed across several sectors including Commercial Facilities, Critical Manufacturing, Energy, and Transportation Systems. Moxa estimates that this product is used primarily in Asia and Europe.





### VULNERABILITY CHARACTERIZATION


# VULNERABILITY OVERVIEW


IMPROPER AUTHENTICATION

Any user is able to download log files by accessing a specific URL.
CVE-2016-8362 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).


PERMISSIONS, PRIVILEGES, AND ACCESS CONTROLS

User is able to execute arbitrary OS commands on the server.
CVE-2016-8363 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).





### VULNERABILITY DETAILS


# EXPLOITABILITY

These vulnerabilities could be exploited remotely.


# EXISTENCE OF EXPLOIT

No known public exploits specifically target these vulnerabilities.


# DIFFICULTY

An attacker with a low skill would be able to exploit these vulnerabilities.




### MITIGATION

Moxa recommends that users disable HTTP/HTTPS after completing required configuration through web browser interface. Users can access via SNMP to enable HTTP/HTTPS if needed. If remote control or monitoring is required, users should enable "IP Protocol Filter" feature of OnCell/AWK products to prevent any unauthorized access to the administrative web management interface.

Moxa has developed the following patch plan.


OnCellG3470A-LTE November 1, 2016:

AWK-1131A/3131A/4131A Series November 1, 2016 
AWK-3191 Series May 31, 2017 
AWK-5232/6232 Series May 31, 2017 
AWK-1121/1127 Series June 30, 2017 
WAC-1001 V2 Series June 30, 2017 
WAC-2004 Series June 30, 2017 
AWK-3121-M12-RTG Series June 30, 2017 
AWK-3131-M12-RCC Series June 30, 2017 
AWK-5232-M12-RCC Series June 30, 2017 


No future updates are planned for the following models:

TAP-6226 Series,
AWK-3121/4121 Series,
AWK-3131/4131 Series, and
AWK-5222/6222 Series.


Users should contact Moxa if further assistance is needed for these models at:
http://www.moxa.com/support/request_support.aspx