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Kaspersky Lab Advisory

(KL-MOXA-2018-104) Unauthorized Configuration and Firmware Upload

Affected Hardware/Software

Moxa OnCell G3100-HSPA Series Firmware version 1.6 Build 17100315 and prior

Severity level

  • Impact: Attacker can modify configuration and upload firmware
  • Access Vector: Remote
  • CVSS v3 Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Overall CVSS Score: 9.8
  • CVE ID: CVE-2018-11422
  • CWE ID: 284

Hardware/Software description

Moxa OnCell G3100-HSPA Series devices are industrial five-band HSPA high speed IP gateways with VPN functionality

Vulnerability description

Moxa OnCell G3100-HSPA Series version 1.6 Build 17100315 and prior use a proprietary configuration protocol that does not provide confidentiality, integrity and authenticity security controls. All information is sent in plain text, and can be intercepted and modified. Any commands (including device reboot, configuration download or upload, or firmware upgrade) are accepted and executed by the device without authentication.

Mitigation

Apply firmware patch from vendor.

Credits

Vulnerability was discovered by Eugenie Potseluevskaya (Kaspersky Lab).