National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-5400 Detail

Current 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.

Source:  MITRE
Description Last Modified:  10/08/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.1 CRITICAL
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N (V3 legend)
Impact Score: 5.2
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 6.4 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:N) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://www.kb.cert.org/vuls/id/176301 Third Party Advisory US Government Resource

Technical Details

Vulnerability Type (View All)

  • Origin Validation Error (CWE-346)

Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-5400
NVD Published Date:
10/08/2018
NVD Last Modified:
01/24/2019