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ICSA-20-056-01  ·  Published 2020-02-25  ·  View on CISA ICS-CERT ↗

Moxa MB3xxx Series Protocol Gateways

CVSS 9.8 CRITICAL

Risk Summary

Successful exploitation of these vulnerabilities could crash the device, cause a buffer overflow, allow remote execution of arbitrary code, or allow access to sensitive information.

Remediations

  • MB3170 Series: Download the new firmware.
  • MB3270 Series: Download the new firmware.
  • MB3180 Series: Download the new firmware. Moxa also recommends users follow below instructions to mitigate potential risks:',https://www.moxa.com/support/product-support/software-and-documentation/search?psid=56829icsa-20-056-01.json ,vendor_fix,Upgrade to the latest firmware and disable HTTP and Telnet communications.,emptyicsa-20-056-01.json,vendor_fix,Use Moxa utilities (MGate Manager NPort Administration Suite Utility) to change device configurations or monitor the device status remotely.'
  • Use a VPN tunnel for a secure and protected connection between the devices and host PC.
  • MB3280 Series: Download the new firmware.
  • MB3480 Series: Download the new firmware.
  • MB3660 Series: Download the new firmware.
  • Please see Moxa's security advisory for more information.
  • MB3180 Series: Download the new firmware. Moxa also recommends users follow below instructions to mitigate potential risks:',https://www.moxa.com/support/product-support/software-and-documentation/search?psid=56829icsa-20-056-01.json,vendor_fix,Upgrade to the latest firmware and disable HTTP and Telnet communications.,emptyicsa-20-056-01.json,vendor_fix,Use Moxa utilities (MGate Manager NPort Administration Suite Utility) to change device configurations or monitor the device status remotely.'

Affected Vendors

Moxa

Affected Products (6)

Moxa · MB3280 series <= 3.0
Moxa · MB3270 series <= 4.0
Moxa · MB3170 series <= 4.0
Moxa · MB3480 series <= 3.0
Moxa · MB3660 series <= 2.2
Moxa · MB3180 series <= 2.0

Affected Sectors

Critical Manufacturing, Energy, Water and Wastewater Systems

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