CVE-2018-4838 Information

Description

A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions V4.30) EN100 Ethernet module DNP3 variant (All versions V1.04) EN100 Ethernet module PROFINET IO variant (All versions) EN100 Ethernet module Modbus TCP variant (All versions) EN100 Ethernet module IEC 104 variant (All versions V1.22). The web interface (TCP/80) of affected devices allows an unauthenticated user to upgrade or downgrade the firmware of the device including to older versions with known vulnerabilities.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-845879.pdf https://ics-cert.us-cert.gov/advisories/ICSA-18-067-01 https://www.securityfocus.com/bid/103379

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5