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CRITICAL · 9.1

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 plaintex...

Vulnerability Description

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.

CVSS Score

9.1

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
Auto-MaskinRp 210E Firmware-
ArmArm7< 3.7
Auto-MaskinRp 210E-
Auto-MaskinDcu 210E Firmware-
Auto-MaskinDcu 210E-

Related Weaknesses (CWE)

CWE-346

References

FAQ

What is CVE-2018-5400?

CVE-2018-5400 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 plaintex...

How severe is CVE-2018-5400?

CVE-2018-5400 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2018-5400?

Check the references section above for vendor advisories and patch information. Affected products include: Auto-Maskin Rp 210E Firmware, Arm Arm7, Auto-Maskin Rp 210E, Auto-Maskin Dcu 210E Firmware, Auto-Maskin Dcu 210E.