Vulnerability CVE-2018-4840


Published: 2018-03-08

Description:
A vulnerability has been identified in Siemens DIGSI 4 (All versions < V4.92), EN100 Ethernet module IEC 61850 variant (All versions < V4.30), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module DNP3 variant (All versions), EN100 Ethernet module IEC 104 variant (All versions). The device engineering mechanism allows an unauthenticated remote user to upload a modified device configuration overwriting access authorization passwords.

Type:

CWE-306

(Missing Authentication for Critical Function)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Siemens -> En100 ethernet module dnp3 firmware 
Siemens -> En100 ethernet module iec 104 firmware 
Siemens -> En100 ethernet module modbus tcp firmware 
Siemens -> En100 ethernet module profinet io firmware 

 References:
https://cert-portal.siemens.com/productcert/pdf/ssa-203306.pdf
https://ics-cert.us-cert.gov/advisories/ICSA-18-067-01

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