SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-137452245] Moxa OnCell Vulnerabilities

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-08-23OTHERMoxa OnCellMaxim RuppN/A2016-5799, 2016-5812N/AN/AN/A

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# Moxa OnCell Vulnerabilities
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### OVERVIEW

Independent researcher Maxim Rupp has identified several vulnerabilities in Moxa's OnCell products. Moxa has produced new firmware to mitigate these vulnerabilities.
These vulnerabilities could be exploited remotely.




### AFFECTED PRODUCTS

Moxa reports that the vulnerability affects the following products:

OnCell G3100V2 Series, editions prior to Version 2.8, and
OnCell G3111/G3151/G3211/G3251 Series, editions prior to Version 1.7






### IMPACT

An attacker could exploit these vulnerabilities to bypass authentication to log in as a valid user.

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 products, OnCell 31XX and 32XX series devices, are cellular IP gateways that can connect serial or Ethernet devices to a cellular network. According to Moxa, OnCell IP gateways are deployed across several sectors including Commercial Facilities, Critical Manufacturing, Energy, and Transportation Systems. Moxa estimates that these products are used primarily in Asia and Europe.





### VULNERABILITY CHARACTERIZATION


# VULNERABILITY OVERVIEW

IMPROPER RESTRICTION OF EXCESSIVE AUTHENTICATION ATTEMPTS

An attacker can freely use brute force to determine parameters needed to bypass authentication.
CVE-2016-5799 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).




PLAINTEXT STORAGE OF A PASSWORD

A configuration file contains parameters that represent passwords in plaintext.
CVE-2016-5812 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).






### 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 has made firmware fixes available on their web site at the following locations:
http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=316&type_id=4
http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=416&type_id=4


Moxa offers the following advice for upgrading firmware:

The OnCell G3111/G3151-HSPA's firmware can be upgraded though the web console, serial console, or through OnCell Search Utility. However, Moxa recommends a local (LAN) connection to the OnCell to minimize the risk of a broken connection during the upgrade process. 

If you have made any changes to your configuration, remember to save the configuration first before upgrading the firmware. Any unsaved changes will be discarded when the firmware is upgraded. To upgrade the firmware, simply browse to the location of the firmware on your PC, and select Submit.