Vulnerability Monitor

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CVE-2018-5400

The Auto-Maskin products utilize an undocumented custom protocol to set up Modbus communications with other devices without validating those devices. The originating device sends a message in plaintext, 48:65:6c:6c:6f:20:57:6f:72:6c:64, "Hello World" over UDP ports 44444-44446 to the broadcast address for the LAN. Without verification devices respond to any of these broadcast messages on the LAN with a plaintext reply over UDP containing the device model and firmware version. Following this exchange the devices allow Modbus transmissions between the two devices on the standard Modbus port 502 TCP. Impact: An attacker can exploit this vulnerability to send arbitrary messages to any DCU or RP device through spoofing or replay attacks as long as they have access to the network. Affected releases are Auto-Maskin DCU-210E RP-210E: Versions prior to 3.7 on ARMv7.

Published

2018-10-08T15:29:02.727

Last Modified

2024-11-21T04:08:44.580

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.1 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

4.9

Weaknesses
  • Type: Secondary
    CWE-346
  • Type: Primary
    CWE-346
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System auto-maskin rp_210e_firmware - Yes
Hardware arm arm7 < 3.7 No
Hardware auto-maskin rp_210e - No
Operating System auto-maskin dcu_210e_firmware - Yes
Hardware arm arm7 < 3.7 No
Hardware auto-maskin dcu_210e - No
References